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1.
Diagn. tratamento ; 28(3): 121-5, jul-set de 2023. ilus 1
Article in Portuguese | LILACS, SMS-SP | ID: biblio-1517920

ABSTRACT

As recomendações de atividade física para a população foram avançando desde os tempos em que somente a atividade intensa e contínua de pelo menos uma hora de duração eram as indicadas, passando para moderadas de pelo menos 30 minutos, diminuição do tempo sentado, até as evidências de que "Todo Passo ou Movimento Conta". Chegamos agora às propostas de atividade intensa, mas de curta ou curtíssima duração; que facilitariam a incorporação ao estilo de vida. As primeiras evidências são cercadas de grande entusiasmo, podendo se tornar em uma nova tendência de prescrição, mas requerem novos estudos para passarem a fazer parte do rol oficial das recomendações.


Subject(s)
Humans , Male , Female , Exercise , Evidence-Based Medicine , Sedentary Behavior , Accelerometry
2.
Poblac. salud mesoam ; 19(2)jun. 2022.
Article in Spanish | LILACS, SaludCR | ID: biblio-1386960

ABSTRACT

Resumen Objetivo: determinar el gasto energético y el tiempo dedicado a actividad física en condición de vida libre de escolares costarricenses con sobrepeso u obesidad. Metodología: participaron 31 niños y 13 niñas entre 6 y 9 años (7.6 ± 1.03 años) con sobrepeso u obesidad, estado nutricional que se estableció según el IMC. Las variables del estudio fueron la antropometría, el porcentaje de grasa corporal (%GC), el gasto energético total producto de la actividad física a lo largo del día (GEAF total diario), el gasto energético por actividad física (GEAF) y el tiempo dedicado a la actividad física (TAF), las dos últimas se estimaron según condición sedentaria, ligera, moderada o vigorosa, por medio del acelerómetro Actiheart. Resultados: la talla y el %GC fueron significativamente mayores en las niñas (126.8 ± 5.9 cm, 34.0 ± 6.4 %GC) que en los niños (123.0 ± 5.4 cm, 25.2 ± 6.9 %GC). Los niños registraron un GEAF total diario de 824 ± 228.1 kcal/day, GEAF moderada + vigorosa de 285.6 ± 131.7 kcal/day y un TAF moderada + vigorosa de 147.0 ± 66.6 min, valores superiores (p<0.05) a los de las niñas 395 ± 144.4 kcal/day, 139.6 ± 90.1 kcal/day y 75.6 ± 43.2 min, respectivamente. Conclusiones: los escolares cumplen más de los 60 min/día recomendados de TAF de moderada a vigorosa intensidad, sin embargo, el GEAF de moderada a vigorosa intensidad no alcanza el mínimo de 300 kcal/día para la reducción de peso, lo cual podría ser una de las causas del sobrepeso.


Abstract Objective: To determine the energy expenditure and time spent on physical activities in Costa Rican overweight or obese schoolchildren in free-living conditions. Methodology: Participants were 31 boys and 13 girls aged 6 to 9 years old (7.6 ± 1.03 years) with overweight or obesity; nutritional status was established by BMI. The variables of the study were: anthropometric, body fat percentage (%BF), total energy expenditure product of physical activity performed during the day (EEPA daily total), plus the energy expenditure by physical activity (EEPA), and time spent on physical activity (TPA), both variables in sedentary condition, light, moderate and vigorous intensity estimated by the Actiheart accelerometer. Results: Size and %BF were significantly higher in girls (126.8 ± 5.9 cm, 34.0 ± 6.4% BF) than in boys (123.0 ± 5.4 cm, 25.2 ± 6.9% BF). Boys recorded a daily total EEPA of 824 ± 228.1 kcal / day, moderate + vigorous EEPA 285.6 ± 131.7 kcal / day and a moderate + vigorous TPA 147.0 ± 66.6 min; significantly higher (P <0.05) than girls 395 ± 144.4 kcal / day, 139.6 ± 90.1 kcal / day and 75.6 ± 43.2 min respectively . Conclusions: Schoolchildren perform over 60 min/day moderate to vigorous intensity PA recommended, however; the EEPA moderate to vigorous intensity does not meet the minimum recommendation of 300 kcal / day for weight reduction. This could be one of the causes for overweight schoolchildren.


Subject(s)
Humans , Male , Female , Child , Exercise , Energy Metabolism , Obesity Management , Costa Rica , Accelerometry
3.
Rev. bras. ativ. fís. saúde ; 27: 1-14, fev. 2022.
Article in English | LILACS | ID: biblio-1382104

ABSTRACT

Smartphone apps have been developed and investigated in validation studies for tracking human be-havior such as physical activity (PA) and sedentary behavior (SB). However, as it is unclear whether these apps are valid for tracking PA and SB when compared to research-grade accelerometers, thus, this systematic review aimed to investigate the validity of smartphone apps for tracking PA and SB using the accelerometer as a criterion measure. A systematic search was conducted in PubMed, Web of Science, SportDiscus, and Scopus databases. The mean percentage difference (MPD) was used to evaluate criterion validity. Ten studies (n = 662) validating different apps using ActiGraph accelerometers as criteria measure (six were conducted in free-living conditions, two in laboratory conditions, and two in both conditions) were included for analyses. While four apps were considered valid for tracking PA, six were not valid or fully valid. The MPD analysis revealed that apps provide no valid scores for tracking PA measures (MPD = -12.6 ­ 37.7). The scarcity of studies investigat-ing SB limits the tracking of the results on this behavior. Study designs, smartphone location, and exercise intensity tend to affect the accuracy of apps tracking PA; thus, the current review showed conflicting results among studies. This review shows that it is not possible to generalize the valid scores for all apps


Aplicativos para smartphones têm sido desenvolvidos e investigados em estudos de validação para rastrea-mento de comportamento humano, como atividade física (AF) e comportamento sedentário (CS). No entan-to, como não está claro se esses aplicativos são válidos para rastrear AF e CS quando comparados a acelerôme-tros de grau de pesquisa, portanto, essa revisão sistemática teve o objetivo investigar a validade de aplicativos de smartphone para rastreamento de AF e CS usando o acelerômetro como medida de critério. Uma busca sistemática foi realizada em quatro bases de dados. A diferença percentual média (MPD) foi utilizada para avaliar a validade de critério. Dez estudos (n = 662) validando diferentes aplicativos usando acelerômetros ActiGraph como medida de critério (seis foram realizados em condições de vida diária, dois em condições de laboratório e dois em ambas as condições) foram incluídos para análise. Enquanto quatro aplicativos foram considerados válidos para rastreamento de AF, seis não eram válidos ou totalmente válidos. A análise do MPD revelou que os aplicativos não fornecem pontuações válidas para rastrear medidas de AF (MPD = -12,6 ­ 37,7). A escassez de estudos investigando o CS limita o rastreamento dos resultados sobre esse comportamento. Desenhos de estudo, localização do smartphone e intensidade do exercício tendem a afetar a precisão dos aplicativos que rastreiam AF; assim, a presente revisão mostrou resultados conflitantes entre os estudos. Esta revisão mostra que não é possível generalizar as pontuações válidas para todos os aplicativos.


Subject(s)
Epidemiology , Risk Measurement Equipment , Accelerometry , Sitting Position
4.
Rev. bras. ativ. fís. saúde ; 27: 1-9, fev. 2022. tab, fig
Article in English | LILACS | ID: biblio-1418208

ABSTRACT

Physical activity (PA) and inflammation influence bone density through multiple physiological mechanisms, but current evidence is not robust on the structure mediating these relationships. There-fore, the aim of this study was to investigate the associations of PA, and serum interleukin-6 (IL-6) on bone density. Cross-sectional analysis in the Pelotas (Brazil) 1982 Birth Cohort with participants aged 30-years old. PA was objectively measured by accelerometry. Bone mineral density (g/cm2) was evaluated for the lumbar spine and femoral neck using dual-energy X-ray absorptiometry. Crude and adjusted linear regressions and mediation analyses were performed. In both sexes, the overall PA was positively associated with femoral neck bone density, but not lumbar spine. For men, the mean of femoral neck were 0.027, 0.042, and 0.032 higher in the second, third, and fourth quartiles, respectively, compared to the first quartile (reference). Among women, higher bone density values were found in the third (0.021) and fourth (0.027) quartiles of overall PA compared to the lowest quartile. Among females, moderate-to-vigorous intensity physical activity presented a positive rela-tionship with all sites of bone density. The indirect effect through IL-6 was not significant. Physical activity was associated with gains in bone density. The findings reinforce recommendations for PA in adulthood to promote bone health


A atividade física (AF) e a inflamação influenciam a densidade óssea através de múltiplos mecanismos fisiológicos, mas a atual evidência não é robusta sobre a estrutura de mediação dessas relações. Portanto, o objetivo deste estudo foi investigar as associações de AF e interleucina-6 sérica (IL-6) na densidade óssea. Análise transversal na Coorte de Nascimentos de 1982 Pelotas (Brasil) em participantes com 30 anos de idade. AF foi medida objetivamente por acelerometria. Densidade mineral óssea (g/cm2) foi avaliada para a coluna lombar e colo do fêmur usando absorciometria de raios-X de dupla energia. Foram realizadas regressões lineares brutas e ajustadas e análises de mediação. Em ambos os sexos, a AF total foi positivamente associada à densidade óssea do colo do fêmur, mas não à coluna lombar. Para os homens, as médias do colo do fêmur foram 0,027, 0,042 e 0,032 maiores no segundo, terceiro e quarto quartis, respectivamente, em relação ao primeiro quartil (referência). Entre as mulheres, os maiores valores de densidade óssea foram encontrados no terceiro (0,021) e quarto (0,027) quartis de AF total em comparação ao quartil mais baixo. No sexo feminino, a atividade física de intensidade moderada a vigorosa apresentou relação positiva com todos os locais de densidade óssea. O efeito indireto através da IL-6 não foi significativo. A atividade física foi associada a ganhos de densidade óssea. Os achados reforçam recomendações de AF na idade adulta para promover a saúde óssea


Subject(s)
Body Composition , Epidemiology , Accelerometry
5.
J. Phys. Educ. (Maringá) ; 33: e3344, 2022. tab, graf
Article in Portuguese | LILACS | ID: biblio-1421867

ABSTRACT

RESUMO O uso do acelerômetro para mensurar a atividade física em pesquisas epidemiológicas, apresenta desafios para aumentar a comparabilidade entre os estudos que utilizam esse equipamento. Nesse sentido o objetivo deste trabalho é comparar estimativas de tempo em AFMV para adultos provenientes de diferentes métodos de processamentos de dados, através do acelerômetro Actigraph GT3X+. Trata-se de um estudo transversal, da linha de base do estudo piloto do Estudo Longitudinal dos Determinantes da Atividade Física. Amostra contou com 31 funcionários terceirizados de ambos os sexos, com idade média de 47.05anos (DP=9.35). Os participantes utilizaram acelerômetros do modelo GT3X+ durante sete dias consecutivos. A estimativa de tempo de AFMV foi gerada através de software Actilife e R-package GGIR. Análises estatísticas descritivas, ANOVA e pos-hoc de Bonferroni para comparabilidade foram realizadas no software R. Análise de Bland-Altman foi realizado no SigmaPlot para avaliação de viés e concordância. Houve diferença significativa no tempo médio de AFMV entre os dados baseados em counts e dados brutos (p<0,001). O tempo médio em AFMV foi menor a partir do processamento por dados brutos do que o em counts (-264,81min/dia; p<0,001). Concluindo que os achados sugerem não haver, estatisticamente, equivalência entre os métodos comparados para estimar tempo de AFMV.


ABSTRACT The use of accelerometers to measure physical activity in epidemiological research presents challenges to increase comparability between studies that use this equipment. In this sense, the objective of this work is to compare time estimates in MVPA for adults from different data processing methods, using the Actigraph GT3X+ accelerometer. This is a cross-sectional study, from the baseline of the pilot study of the Longitudinal Study of the Determinants of Physical Activity. Sample had 31 outsourced employees of both genders, with an average age of 47.05 years (SD=9.35). Participants used GT3X+ model accelerometers for seven consecutive days. The MVPA time estimate was generated using Actilife and R-package GGIR software. Descriptive statistical analyses, ANOVA and Bonferroni post-hoc for comparability were performed in the R software. Bland-Altman analysis was performed in SigmaPlot to assess bias and agreement. There was a significant difference in the mean time of MVPA between count-based data and raw data (p<0.001). The average time in MVPA was shorter from processing by raw data than in counts (-264.81 min/day; p<0.001). Concluding that the findings suggest that there is no statistically equivalence between the methods compared to estimate MVPA time.


Subject(s)
Humans , Male , Female , Middle Aged , Software , Electronic Data Processing/instrumentation , Exercise , Accelerometry , Wrist , Pilot Projects , Cross-Sectional Studies/methods , Adult
6.
Motriz (Online) ; 28: e10220012021, 2022. tab, graf
Article in English | LILACS | ID: biblio-1360606

ABSTRACT

Abstract Aims: This study aimed to compare the sedentary time measured using the ActiGraph GT3X accelerometer with the measurement of sitting and standing time obtained by ActivPAL inclinometers. Methods: This was a cross-sectional study conducted with a sample of 60 schoolchildren (34 males) of one elementary public school in Brazil. The students used both an ActiGraph GT3X accelerometer and an ActivPAL inclinometer, concurrently, positioned at the beginning and removed at the end of the school shift, for four days. For analysis, paired Student's t-tests, Pearson's correlation coefficients, intraclass correlation coefficients, and Bland-Altman plots were used. Results: When comparing sedentary time with sitting time, although correlated (r = 0.53; p < 0.001), the mean minutes were different (134.2 min/day in ActiGraph GT3X vs 120.3 min/day in ActivPAL; p < 0.001), with a bias of 13.9 min/day. When comparing the measurement of sedentary time with the sum of the sitting time plus standing time, different mean minutes were also observed (134.2 min/day in ActiGraph GT3X vs 177.0 min/day in ActivPAL; p < 0.001), and although the correlation was stronger (r = 0.75; p < 0.001), the bias was higher (−42.8 min/day). Conclusion: Sedentary time derived from the ActiGraph GT3X device should be used with caution to evaluate sedentary behavior in a school setting and may be interpreted only as non-moving activities (stationary behavior).


Subject(s)
Humans , Child, Preschool , Sedentary Behavior , Standing Position , Cross-Sectional Studies/instrumentation , Actigraphy/instrumentation , Accelerometry/instrumentation
7.
Rev. bras. ciênc. mov ; 29(4): [1-16], out.-dez. 2021. tab, ilus
Article in Portuguese | LILACS | ID: biblio-1372101

ABSTRACT

Medidas autorreportadas de atividade física (AF) são comumente usadas em pesquisas populacionais, contudo ainda é incerto o viés destas quando comparadas com acelerometria. Assim, o objetivo deste estudo foi comparar medidas de AF obtidas por questionário e acelerometria em adultos e idosos. Realizouse uma análise transversal do estudo de base populacional denominado Study of Health in Pomerode - SHIP-Brazil, com 2488 participantes entre 20 e 79 anos, conduzido nos anos de 2014/18. Uma subamostra de indivíduos que teve medidas válidas de uso do acelerômetro (ActiGraph GT3X+) e dados do questionário (International Physical Activity Questionnaire-Short Form - IPAQ-SF) foi incluída na análise. As medidas autorreportadas de caminhada e AF de intensidades moderada e vigorosa (AFMV) foram obtidas pelo IPAQ-SF e as medidas mensuradas pelo acelerômetro. Para comparação utilizou-se o teste de Wilcoxon e análise de dispersão de Bland-Altman, com nível de significância p < 0,05. A amostra final foi de 451 pessoas (312 adultos e 103 idosos; 55,2% mulheres; idade média = 49,4 anos ± 13,83). Entre homens adultos houve diferença estatística nas medidas de AFMV entre acelerômetro e IPAQ-SF (p < 0,05). Para os idosos e entre as mulheres adultas e idosas não foi observada diferença estatística na medida de AFMV autorreportada (IPAQ-SF) e acelerômetro (p > 0,05). Em todos os grupos houve maior concordância até valores de 300 minutos/semana de AFMV. Por fim, pode-se concluir que as medidas de AFMV oriundas do IPAQ-SF podem ser utilizadas em estudos populacionais com mulheres e com idosos. Sugere-se cautela na utilização entre homens que tendem a subestimar a AFMV em relação a medida de acelerometria. (AU)


Self-reported measures of physical activity (PA) are commonly used in population surveys, however their bias is still uncertain when compared with accelerometry. The goal is to compare PA measurements obtained by questionnaire and accelerometry in adults and the elderly. The Study of Health in Pomerode - SHIP-Brazil database was used, with 2488 participants between 20 and 79 years old, conducted in 2014/18. A subsample of individuals who had valid accelerometer measurements (ActiGraph GT3X+) and questionnaire data (International Physical Activity Questionnaire-Short Form - IPAQ-SF) was included in the analysis. The self-reported measures of walking and moderate and vigorous PA (MVPA) were obtained by the IPAQ-SF and the measured by the accelerometer. For comparison, the Wilcoxon test and Bland-Altman dispersion analysis were used, with significance level p < 0.05. The final sample was 451 people (312 adults and 103 elderly; 55.2% women; mean age = 49.4 years ± 13.83). Among adult men, there was a statistical difference in MVPA measurements between accelerometer and IPAQ-SF (p < 0.05). For the elderly and between adult and elderly women, no statistical difference was observed in the measure of self-reported MVPA (IPAQ-SF) and accelerometer (p > 0.05). In all groups there was greater agreement up to values of 300 minutes / week for MVPA. Finally, it can be concluded that MVPA measures from the IPAQ-SF can be used in population studies with women and the elderly. Caution is suggested in the use among men who tend to underestimate MVPA in relation to the accelerometer measurement. (AU)


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Epidemiology , Surveys and Questionnaires , Validation Study , Accelerometry , Motor Activity , Social Conditions , Women , Aged , Exercise , Health , Surveys and Questionnaires , Walking , Adult , Clinical Laboratory Techniques , Hip , Men
8.
São Paulo med. j ; 139(4): 372-379, Jul.-Aug. 2021. tab, graf
Article in English | LILACS | ID: biblio-1290249

ABSTRACT

ABSTRACT BACKGROUND: Associations between behaviors and individual chronic diseases have been demonstrated. However, the relationship between time spent on sedentary behavior and multimorbidity remains less clear. OBJECTIVE: To identify the predictive power of various intensities of physical activity versus sedentary behavior, as discriminatory factors for cardiometabolic multimorbidity (cardiovascular diseases and diabetes) in the elderly. DESIGN AND SETTING: Cross-sectional study in different residential census tracts and residential households in Florianópolis (SC). METHODS: The participants were 425 elderly people (65% women) from the EpiFloripa Aging study in 2014. Sociodemographic variables and self-reported incidence of cardiovascular diseases and diabetes were obtained via a questionnaire. Light physical activity (LPA), moderate-to-vigorous physical activity (MVPA) and sedentary behavior (SB) were measured using accelerometers. The analyses were stratified according to sex and included a diagnosis for interpretation. Behaviors were taken into consideration if their predictive power in terms of area under the receiver operating characteristic (ROC) curve was greater than 0.50. The time cutoff point was defined from sensitivity and specificity. RESULTS: For older adult men with diabetes, the predictive value of MVPA for absence of multi-morbidity was an area of 0.75 (95% confidence interval, CI: 0.538-0.962), and a cutoff of 17 minutes per day. Older adult women with diabetes had an area of 0.71 (95% CI: 0.524-0.866) and a cutoff of 10 minutes per day. LPA and SB did not present predictive values. CONCLUSION: The time spent on MVPA is a predictor of absence of multimorbidity in elderly people with diabetes, for both sexes.


Subject(s)
Humans , Male , Female , Aged , Sedentary Behavior , Multimorbidity , Exercise , Cross-Sectional Studies , Accelerometry
9.
Rev. bras. ciênc. mov ; 29(1): [1-16], jan.-mar. 2021. tab
Article in English | LILACS | ID: biblio-1343706

ABSTRACT

Background: Population studies using accelerometers to estimate physical inactivity in older people have been carried out in developed countries. In Brazil, these studies are limited to subjective measures. Objective: to identify through an accelerometer the prevalence and factors associated with physical inactivity in older people residents in São Paulo, Brazil. Methods: This is a cross-sectional population-base study conducted with 543 older people individuals (mean 73.8 years) using data from the SABE study (Health, Welfare and Ageing). The level of physical activity was measured using accelerometers, and the participants categorized into inactive with <30 minutes of moderate and/or vigorous activity daily; and active with > 30 minutes moderate and/or vigorous activity daily. The independent variables were sociodemographic, anthropometric, clinical, and lifestyle. The association of the dependent variable with the independent variables was conducted using multiple regression analysis. Results: Of the older people evaluated, 85.4% were physically inactive (men = 74.3% and women = 91.9%). Older people aged >75 years (OR=4.67 [1.87 to 11.66]), women (OR=2.26 [1.15 to 4.44]), with high waist circumference (OR=2.93 [1.41 to 6.12]), high number of comorbidities (OR=2.27 [1.22 to 4.23]), and chronic pain (OR=2.54 [1.32 to 4.88]) were associated independently with physical inactivity. Conclusion: The prevalence of physical inactivity in older people individuals aged 65 or over is appalling and associated with sociodemographic, anthropometric, and clinical variables.(AU)


Estudos populacionais utilizando acelerômetros para estimar a inatividade física em idosos têm sido realizados em países desenvolvidos. No Brasil, esses estudos se limitam a medidas subjetivas. Objetivo: identificar por meio de um acelerômetro a prevalência e os fatores associados à inatividade física em idosos residentes em São Paulo, Brasil. Métodos: Trata-se de um estudo transversal de base populacional realizado com 543 idosos (média de 73,8 anos) a partir dos dados do estudo SABE (Saúde, Bem-Estar e Envelhecimento). O nível de atividade física foi medido por meio de acelerômetros, e os participantes categorizados em inativos com <30 minutos de atividade moderada e / ou vigorosa diariamente; e ativo com> 30 minutos de atividade moderada e / ou vigorosa diariamente. As variáveis independentes foram sociodemográficas, antropométricas, clínicas e estilo de vida. A associação da variável dependente com as variáveis independentes foi realizada por meio de análise de regressão múltipla. Resultados: Dos idosos avaliados, 85,4% eram inativos fisicamente (homens = 74,3% e mulheres = 91,9%). Idosos com idade> 75 anos (OR = 4,67 [1,87 a 11,66]), mulheres (OR = 2,26 [1,15 a 4,44]), com circunferência da cintura elevada (OR = 2,93 [1,41 a 6,12]), elevado número de comorbidades (OR = 2,27 [1,22 a 4,23]) e dor crônica (OR = 2,54 [1,32 a 4,88]) foram associados de forma independente à inatividade física. Conclusão: A prevalência de inatividade física em idosos com 65 anos ou mais é preocupante e está associada a variáveis sociodemográficas, antropométricas e clínicas.(AU)


Subject(s)
Humans , Male , Female , Aged , Aging , Public Health , Epidemiology , Sedentary Behavior , Aged , Developed Countries , Health , Prevalence , Accelerometry
10.
Rev. bras. ativ. fís. saúde ; 26: 1-8, mar. 2021. tab, il
Article in English | LILACS | ID: biblio-1282612

ABSTRACT

The objective of this article was to describe patterns of losses of information regarding accelerometer data and to assess the use of multiple imputation to generate physical activity estimates for individu-als without accelerometry data. Two birth cohort studies from Pelotas (Brazil) with participants aged 22 and 11-years old assessed objectively measured physical activity differences between complete and imputed cases. Mean values of overall physical activity for complete cases (n1993 = 2,985 and n2004 = 3,348) and for complete cases plus imputed cases (n1993 = 760 and n2004 = 79) were described accord-ing to predictors. Male individuals, participants with black skin color, and less schooled individuals presented higher averages of overall physical activity than their counterparts. Almost all imputed estimates were comparable to the complete cases, and the highest difference found was 0.7 mg for the first quintile of socioeconomic status of the 1993 birth cohort. Multiple imputation is a positive technique to deal with missing data from objectively measured physical activity. It provides a set of relevant variables to be used in order to efficiently predict accelerometer data


O objetivo desse artigo foi descrever os padrões de perda de informação em dados de acelerometria, além de avaliar o processo de imputação múltipla para estimar o nível de atividade física para indivíduos sem dados de acelerometria. Participantes de duas coortes de nascimentos de Pelotas (Brasil) com 22 e 11 anos participaram do estudo e diferenças entre casos completos e imputados foram avaliadas. A média geral de atividade física para os casos completos (n1993 = 2.985 e n2004 = 3.348) e para casos completos mais imputados (n1993 = 760 e n2004 = 79) foi descrita de acordo com os preditores. Indivíduos do sexo masculino, de cor da pele preta e com menor escolaridade apresentaram maiores médias de atividade física geral. Quase todas as estimativas imputadas foram comparáveis com os valores de casos completos, e a maior diferença encontrada foi 0,7 mg para o primeiro quintil de renda na coorte de 1993. Imputação múltipla é uma boa técnica para lidar com dados faltantes de atividade física medida por acelerometria. Essa técnica fornece um gama relevante de variáveis para serem usadas a fim de predizer valores de acelerometria eficientemente


Subject(s)
Exercise , Statistics , Accelerometry
11.
Motriz (Online) ; 27: e1021020172, 2021. tab, graf
Article in English | LILACS | ID: biblio-1287354

ABSTRACT

Abstract Aims: This study aimed to measure light-intensity physical activity (LPA) patterns in adolescents according to weekdays and school period and investigated associations between LPA patterns and associated factors. Methods: This is a cross-sectional study with 388 students of both genders, selected from public schools from Londrina city, Parana state. LPA was measured using accelerometry for seven consecutive days and was analyzed by the time spent in very short (15 to 30 s), short (30 to 60 s), intermediate (1 to 3 min), and long bouts (≥ 3 min). Results: Approximately 22% of the total daily time was spent in LPA. The time in LPA accumulated in short or intermediate bouts was higher than the time accumulated in very short or long bouts (P < 0.05). Gender was associated with short (β= 2.180; 95% confidence interval [CI], 0.357 to 4.003) and intermediate bouts (β = 2.822; 95% CI, 0.681 to 4.964), girls presented higher daily time. Age was inversely associated with very short (β = −0.925; 95% CI, −1.676 to −0.175) and intermediate bouts (β = −1.985; 95% CI, −3.579 to −0.390). The total time in LPA and time accumulated in very short, short, and intermediate bouts was higher in the school period when compared to the non-school period (P < 0.05). Conclusion: It could be concluded that the LPA patterns are predominantly composed of time spent in bouts between 30 seconds and three minutes. Gender, age, and school period appear to influence the LPA pattern in adolescents.


Subject(s)
Humans , Adolescent , Students , Exercise/physiology , Motor Activity/physiology , Cross-Sectional Studies/instrumentation , Accelerometry/instrumentation
12.
Rev. chil. endocrinol. diabetes ; 14(2): 65-73, 2021. tab, ilus
Article in Spanish | LILACS | ID: biblio-1283551

ABSTRACT

INTRODUCCIÓN: Las dislipidemias favorecen la formación precoz de placas ateroscleróticas, aumentando el riesgo de enfermedades cardiovasculares (ECVs). La Actividad Física (AF) es un factor protector de ECVs, por lo que el objetivo de este trabajo fue evaluar la asociación entre AF medida objetivamente y dislipidemias en población pediátrica. METODOLOGÍA: La AF fue evaluada en 159 niños (9-13 años) de la Región de La Araucanía a través de acelerometría (ActiGraph GT3X+). Por este medio se estimó el porcentaje de AF moderada a vigorosa (AFMV) y el de conducta sedentaria (CS). Sujetos con ≥60 min de AFMV se consideraron físicamente activos según recomendación de la Organización Mundial de la Salud (OMS). Individuos con %CS>75° percentil fueron considerados sedentarios. El perfil lipídico fue determinado usando métodos convencionales. Fueron calculados índices de aterogenicidad TG/cHDL e índice de aterogenicidad del plasma (IAP). RESULTADOS: 37,1% presentó dislipidemia, 8% hipercolesterolemia, 19,5% hipertrigliceridemia, 6,3% cLDL elevado y 25,2% cHDL disminuido. Solo un 9,4% fueron considerados físicamente activos de acuerdo a la recomendación de la OMS. En los sujetos físicamente activos no hubo caso de dislipidemias (p= 0,032) y tampoco bajos niveles de cHDL (p= 0,013). El %AFMV estaba reducido en sujetos con cHDL bajo y se correlacionó positivamente con HDL-c (r= 0,157, p=0,048). Además, el %AFMV se correlacionó con menores valores de TG/cHDL (r= -0,193, p=0,015) e IAP (r= -0,214, p=0,006). Si bien el comportamiento sedentario no estuvo asociado con riesgo de dislipidemias, el %CS se correlacionó positivamente con niveles de glucosa (r= 0,159, p=0,044) y HOMA-IR (r= 0,178, p=0,037) y negativamente con Quicki (r= -0,160, p=0,044). CONCLUSIONES: Los hallazgos sugieren que la AF se correlaciona a menor frecuencia de dislipidemias y la práctica de AFMV aumentaría los valores de HDL-c y reduciría los índices aterogénicos, por lo que promoverla puede significar disminuir el riesgo de ECVs en nuestra población. Además, la CS se relaciona con un aumento en valores de glucosa e índices de resistencia insulínica en escolares de la Región de La Araucanía.


Dyslipidemias cause early formation of atherosclerotic plaque, increasing the risk of cardiovascular diseases (CVD). Physical Activity (PA) is a protective factor against CVDs. The aim of this study is to evaluate the association between objectively measured PA with dyslipidemias in a pediatric population. METHOD: The PA was evaluated in 159 children (9-13 years old) from Región de La Araucanía using accelerometry (ActiGraph GT3X +). The percentage of moderate to vigorous PA (MVPA) and sedentary behavior (SB) were estimated. Subjects with ≥60 min of MVPA were considered physically active according to the recommendation of the World Health Organization (WHO). Individuals with %SB >75th percentile were sedentary. The lipid profile was determined using conventional methods. TG/HDL-C ratio and atherogenic index of plasma (AIP) were calculated. RESULTS: 37.1% presented dyslipidemia, 8% hypercholesterolemia, 19.5% hypertriglyceridemia, 6.3% elevated LDL-C and 25.2% decreased HDL-C. Only 9.4% were physically active according to the WHO recommendation. In physically active subjects where no cases of dyslipidemias (p =0.032) and no low HDL-C (p = 0.013). The %MVPA was reduced in subjects with low HDL-C and positively correlated with HDL-c (r = 0.157, p = 0.048). In addition, %MVPA was correlated with lower TG / HDL-C values (r = -0.193, p = 0.015) and AIP (r = -0.214, p = 0.006). SB was not associated with risk of dyslipidemia, % SB was positively correlated with glucose levels (r = 0.159, p = 0.044) and HOMA-IR (r = 0.178, p = 0.037) and negatively with Quicki (r = -0.160, p = 0.044). CONCLUSIONS: Our results suggested that PA is it correlates to a lower frequency of dyslipidemia and the practice of MVPA would increase HDL-c values and reduce atherogenic index, promoting it may been reducing the risk of CVDs in our population. In addition, the SB is related to an increase in glucose values and insulin resistance index in schoolchildren in Región de La Araucanía.


Subject(s)
Humans , Male , Female , Child , Adolescent , Cardiovascular Diseases/prevention & control , Exercise , Dyslipidemias/blood , Students , Triglycerides/blood , Body Weight , Insulin Resistance , Chile , Anthropometry , Nutritional Status , Cross-Sectional Studies , Education, Primary and Secondary , Atherosclerosis/blood , Sedentary Behavior , Accelerometry , Heart Disease Risk Factors , Homeostasis , Cholesterol, HDL/blood , Cholesterol, LDL/blood
13.
Cad. Saúde Pública (Online) ; 37(2): e00240620, 2021. tab
Article in English | LILACS | ID: biblio-1153706

ABSTRACT

The aim of this study was to compare self-reported with two accelerometer-derived methods to classify Chilean children and adolescents as physically active. In total, 247 students wore an accelerometer on their hips during 7 consecutive days to classify them as physically active based on (1) daily accumulation of ≥ 60 minutes of moderate-to-vigorous physical activity (MVPA) on each of the seven days, and (2) average MVPA ≥ 60 minutes/day. Also, participants were classified as physically active if they reported being active for at least 60 minutes in all seven days. When using the accelerometer data, 0.8% were active in all seven days, while 10.5% recorded ≥ 60 minutes MVPA per day on average. Based on self-report, 7.2% were physically active. The agreement between self-reported and accelerometer estimations were poor. Important differences were observed between the self-reported and device-derived methods for classifying children and adolescents as physically active. When comparing them, some considerations should be taken. The findings suggest that these methods are not interchangeable. Therefore, if possible, they should be used as complementary measurements.


El objetivo fue comparar el autoreporte con dos métodos provenientes de acelerómetría para clasificar a niños, niñas y adolescentes chilenos como físicamente activos. Doscientos cuarenta y siete estudiantes llevaron un acelerómetro en la cintura durante siete días consecutivos y fueron clasificados como físicamente activos, basados en: (1) acumulación diaria de ≥ 60 minutos de actividad física de moderada a vigorosa (AFMV) en cada uno de los siete días, y (2) promedio de AFMV ≥ 60 minutos/día. Asimismo, los participantes fueron clasificados como físicamente activos si reportaron ser activos por al menos 60 minutos en cada uno de los siete días. Al usar los datos del acelerómetro, 0,8% fueron activos los siete días, mientras que un 10,5% registró ≥ 60 minutos AFMV por día promedio. Un 7,2% fue físicamente activos según el autoreporte. El acuerdo entre las estimaciones autoreportadas y el acelerómetro fue pobre. Se observaron importantes diferencias entre los autoreportes y los métodos derivados del dispositivo para clasificar niños, niñas y adolescentes como físicamente activos. Cuando se comparen datos derivados de los acelerómetros y autoreportes esto se debería considerar. Los resultados sugieren que estos métodos no son intercambiables. Por ello, en la medida de lo posible, se deberían usar como medidas complementarias.


O objetivo foi comparar o autorrelato com dois métodos derivados de acelerômetro para classificar crianças e adolescentes chilenos como fisicamente ativas ou inativas. Um total de 247 alunos usaram um acelerômetro no quadril durante sete dias consecutivos e foram classificados como fisicamente ativos com base em: (1) acúmulo diário de ≥ 60 minutos de atividade física de moderada a vigorosa intensidade (AFMV) em cada um dos sete dias e (2) AFMV média por dia de ≥ 60 minutos. Além disso, os participantes foram classificados como fisicamente ativos com base no autorrelato de ser ativo por pelo menos 60 minutos em todos os sete dias. Com o uso dos dados de acelerômetro, 0,8% foram classificados como ativos em todos os sete dias, enquanto 10,5% registravam ≥ 60 minutos de AFMV por dia em média e 7,2% eram fisicamente ativos com base no autorrelato. A concordância foi baixa entre o autorrelato e as estimativas por acelerômetro. Foram observadas diferenças importantes entre o autorrelato e os métodos baseados em dispositivos para classificar as crianças e adolescentes como fisicamente ativos. Algumas considerações são relevantes ao comparar estimativas baseadas em acelerômetro e o autorrelato de atividade física. Os achados sugerem que esses métodos não são intercambiáveis. Portanto, quando possível, devem ser usados como medidas complementares.


Subject(s)
Humans , Child , Adolescent , Exercise , Accelerometry , Brazil , Chile , Surveys and Questionnaires , Self Report
14.
Environmental Health and Preventive Medicine ; : 16-16, 2021.
Article in English | WPRIM | ID: wpr-880335

ABSTRACT

BACKGROUND@#Little is known on how context-specific sedentary behaviors (SB) affect adiposity. This study aimed to investigate compositional associations between context-specific SB and adiposity and estimate the differences in adiposity associated with replacing school and out-of-school SB with physical activity (PA).@*METHODS@#This study included 336 children and adolescents. Time spent in SB and PA was estimated using multi-day 24-hour raw accelerometer data. SB and PA were specified for school and out-of-school times. Fat mass percentage (FM%) and fat mass index (FMI) were used as adiposity indicators. A compositional isotemporal substitution model was used to estimate differences in adiposity associated with one-to-one reallocations of time from context-specific SB to PA.@*RESULTS@#Participants spent approximately two thirds of their school and out-of-school time being sedentary. Relative to the remaining 24-h movement behaviors, significant associations between out-of-school SB and adiposity were found in both boys (β@*CONCLUSIONS@#A reduction of out-of-school SB in favor of light PA should be advocated as an appropriate target for interventions and strategies to prevent childhood obesity.


Subject(s)
Adolescent , Child , Female , Humans , Male , Accelerometry , Adiposity , Czech Republic , Exercise , Schools , Sedentary Behavior
15.
Article in English, Portuguese | LILACS, SES-SP | ID: biblio-1143853

ABSTRACT

ABSTRACT Objective: To verify the association of lifestyle, anthropometric, sociodemographic, family and school environment indicators with the number of steps/day in children. Methods: The sample consisted of 334 children (171 boys) from nine to 11 years old. Participants used the Actigraph GT3X accelerometer to monitor the number of steps/day, moderate to vigorous physical activity (MVPA) and sedentary time (ST) for seven consecutive days. Height, body weight, body mass index (BMI), waist circumference (WC), and body fat were also measured. Lifestyle indicators such as diet, environment, neighborhood, and parental schooling level were obtained with questionnaires. For the identification of variables associated to the number of steps/day, multiple linear regression models were used. Results: The mean steps/day of boys and girls were statistically different (10,471 versus 8,573; p<001). Among boys, the variables associated to the number of steps/day were: MVPA (β=0.777), ST (β=-0.131), BMI (β=-0.135), WC (β=-0.117), and BF (β=-0.127). Among girls, the variables associated to the number of steps/day were: MVPA (β=0.837), ST (β=-0.112), and parents' educational level (β=0.129). Conclusions: Lifestyle indicators, body composition variables and parental educational level influence the number of steps/day of children, and MVPA and ST are common for both sexes.


RESUMO Objetivo: Verificar a associação dos indicadores de estilo de vida, antropométricos, sociodemográficos, ambiente familiar e escolar com a quantidade de passos/dia em crianças. Métodos: A amostra constituiu-se de 334 crianças (171 meninos) de 9 a 11 anos. Os participantes utilizaram o acelerômetro Actigraph GT3X para monitorar a quantidade de passos/dia, a atividade física moderada a vigorosa (AFMV) e o tempo sedentário (TS) durante sete dias consecutivos. Estatura, massa corporal, índice de massa corpórea (IMC), circunferência de cintura (CC) e gordura corporal também foram mensurados. Indicadores de estilo de vida, como dieta, ambiente, vizinhança e nível de escolaridade dos pais, foram obtidos por questionários. Para identificar as variáveis associadas à quantidade de passos/dia, utilizaram-se modelos de regressão linear múltipla. Resultados: As médias de passos/dia dos meninos e das meninas foram estatisticamente diferentes (10.471 versus 8.573; p<0,001). Nos meninos, as variáveis associadas à quantidade de passos/dia foram: AFMV (β=0,777), TS (β=-0,131), IMC (β=-0,135), CC (β=-0,117) e gordura corporal (β=-0,127). Já entre as meninas, as variáveis associadas à quantidade de passos/dia foram: AFMV (β=0,837), TS (β=-0,112) e nível educacional dos pais (β=0,129). Conclusões: Indicadores de estilo de vida, variáveis de composição corporal e nível educacional dos pais influenciaram a quantidade de passos/dia das crianças. A AFMV e o TS foram comuns para ambos os sexos.


Subject(s)
Walking/statistics & numerical data , Life Style , Body Composition , Brazil , Cross-Sectional Studies , Surveys and Questionnaires , Sex Distribution , Accelerometry/methods
16.
Journal of Peking University(Health Sciences) ; (6): 728-733, 2021.
Article in Chinese | WPRIM | ID: wpr-942244

ABSTRACT

OBJECTIVE@#To explore the differences of alignment and operative time between portable accelerometer-based navigation device (PAD) and computer assisted surgery (CAS) in total knee arthroplasty (TKA).@*METHODS@#Data of patients using iASSIST (a kind of PAD) and OrthoPilot (a kind of CAS) for TKA in Peking University Third Hospital from December 2017 to December 2019 were retrospectively collected. The differences of preoperative general data, preoperative alignment, operative time and postoperative alignment were studied between the two groups.@*RESULTS@#A total of 82 patients were enrolled in our study, including 40 patients in the PAD group and 42 patients in the CAS group. Gender, age, body mass index (BMI), surgical side, preoperative hip-knee-ankle (HKA) angle and preoperative HKA angle deviation didn't show statistically significant difference between the PAD group and the CAS group (P>0.05). Postoperative HKA angle (180.8°±2.2° vs.181.8±1.6°, t=-2.458, P=0.016) and postoperative coronal femoral-component angle (CFA, 90.6°±1.8° vs. 91.6°±1.6°, t =-2.749, P=0.007) of the PAD group were smaller than those of the CAS group, but there was no significant difference in coronal tibia-component angle (CTA, 90.0°±1.3° vs.89.6°±1.4°, t=1.335, P=0.186) between the two groups. There was no significant difference in the rate of outliers (varus or valgus > 3°) for postoperative HKA angle (10.0% vs.11.9%, χ2 =0.076, P=0.783), CFA (12.5% vs. 14.3%, χ2=0.056, P=0.813) and CTA (2.5% vs. 0%, χ2=1.063, P=0.303). There was no significant difference in the accuracy of postoperative HKA angle (2.1° vs. 2.0°, t=0.055, P=0.956), CFA (1.4° vs. 1.8°, t=-1.365, P=0.176) and CTA (1.0° vs. 1.1°, t=-0.828, P=0.410) between the two groups. The precision of postoperative HKA angle (1.1° vs. 1.3°, F=1.251, P=0.267), CFA (1.3° vs. 1.4°, F=0.817, P=0.369) and CTA (0.8° vs. 0.9°, F=0.937, P=0.336) were also not significantly different. We also didn't find statistically significant difference in operative time between the two groups [(83.4±25.6) min vs. (86.5±17.7) min, t=-0.641, P=0.524].@*CONCLUSION@#PAD and CAS had similar accuracy and precision in alignment in TKA, and there was no significant difference in operative time, which indicates that PAD has a broad application prospect in TKA.


Subject(s)
Humans , Accelerometry , Arthroplasty, Replacement, Knee , Knee Joint/surgery , Operative Time , Osteoarthritis, Knee , Retrospective Studies , Surgery, Computer-Assisted , Tibia/surgery
17.
Rio de Janeiro; s.n; 2021. 55 f p. tab.
Thesis in Portuguese | LILACS | ID: biblio-1411288

ABSTRACT

O estímulo para a realização de atividade física (AF) é considerado parte importante das políticas de promoção à saúde e prevenção da obesidade, contudo a associação entre as diferentes categorias de intensidade da atividade física e ganho de peso não está completamente estabelecida. Essa abordagem requer aferições precisas da atividade física, inexistente na grande maioria dos estudos. O presente estudo tem como objetivo avaliar a associação entre os diferentes níveis de intensidade da AF e o índice de massa corporal (IMC) de adolescentes. O estudo foi realizado em 61 adolescentes do sexo masculino com idade média de 11,6 anos (± 1,4), que possuíam dados de acelerometria ao longo de uma semana, permitindo avaliar o tempo médio diário envolvido em cada nível de intensidade da AF, bem como a ausência de AF. Foram também coletados dados antropométricos. Foi avaliada a associação entre cada intensidade da AF, sendo estas o comportamento sedentário (CS), atividade física leve (AFL), atividade física moderada (AFM) e atividade física vigorosa (AFV) com o IMC e o quanto cada categoria explica a variância, de acordo com o coeficiente de determinação (R ­ quadrado) por meio de regressão linear. Como resultados, no modelo bruto somente a AFV apresentou associação estatisticamente significativa com o IMC (p ≤0.05), onde a cada unidade de tempo dispendido nessa categoria, o IMC diminui em média -0,28 unidades. O coeficiente de determinação da AFV explicou 15% da variância do IMC. Quando o modelo foi ajustado pela idade, tanto a AFM quanto a AFV apresentaram alta significância estatística (p=0.006 e p=0.003, respectivamente). Embora ambas as categorias de intensidade tenham sido associadas negativamente com o IMC, a AFV apresenta maior efeito. O tempo dispendido em AFM e AFV ajustados pela variável idade apresentaram associação negativa com o IMC dos adolescentes, mas a AFL ou CS não se associaram ao IMC. Embora a amostra pequena, a premissa de que qualquer atividade física possa repercutir na perda de peso não se confirma e os dados sugerem que somente a realização de AFV tenha impacto importante no IMC.


The stimulus for physical activity (PA) is considered an important part of policies to promote health and prevent obesity, however the association between the different categories of physical activity intensity and weight gain is not completely established. This approach requires precise measurements of physical activity, which does not exist in the vast majority of studies. This study aims to assess the association between different levels of PA intensity and the body mass index (BMI) of adolescents. The study was carried out on 61 male adolescents with a mean age of 11.6 years (± 1.4), who had data on acceleration over a week, allowing to evaluate the average daily time involved in each level of PA intensity, as well as the absence of PA. Anthropometric data were also collected. The association between each intensity of PA was assessed, these being sedentary behavior (SB), light physical activity (LPA), moderate physical activity (MPA) and vigorous physical activity (VPA) with the BMI and how much each category explains the variance, according to the coefficient of determination (R - square) by means of linear regression. As a result, in the crude model only VPA showed a statistically significant association with BMI (p ≤0.05), where for each unit of time spent in this category, the BMI decreased by an average of -0.28 units. The VPA determination coefficient explained 15% of the BMI variance. When the model was adjusted for age, both MPA and VPA showed high statistical significance (p = 0.006 and p = 0.003, respectively). Although both categories of intensity have been negatively associated with BMI, VPA has a greater effect. The time spent in MPA and VPA adjusted for the age variable showed a negative association with the adolescents' BMI, but LPA or SB were not associated with BMI. Although the sample is small, the premise that any physical activity may have an impact on weight loss is not confirmed and the data suggest that only the performance of VPA has an important impact on BMI.


Subject(s)
Humans , Male , Adolescent , Exercise , Body Mass Index , Accelerometry
18.
Audiol., Commun. res ; 26: e2498, 2021. tab, graf
Article in Portuguese | LILACS | ID: biblio-1350151

ABSTRACT

RESUMO Objetivo Descrever os instrumentos utilizados para captação e análise acústica dos sinais de ausculta cervical e identificar aqueles com maior potencial para aplicação na clínica fonoaudiológica. Estratégia de pesquisa Trata-se de uma revisão integrativa de literatura. As buscas foram realizadas nas bases de dados MEDLINE/PubMed, Scopus e Web of Science, a partir da combinação de termos de relevância e operadores booleanos, durante o mês de novembro de 2020. Critérios de seleção Artigos científicos publicados nos idiomas português, espanhol ou inglês, nos últimos cinco anos (2016-2020) e que apresentassem estudo da ausculta cervical. Resultados Foram encontrados 98 artigos. Após a aplicação dos critérios de seleção, 26 artigos foram selecionados para esta revisão. Para captação dos sinais de ausculta cervical, o microfone foi o instrumento mais utilizado, seguido pela técnica de ausculta cervical de alta resolução, que combina sinais acústicos e vibratórios registrados por um microfone e um acelerômetro, respectivamente. Softwares e/ou algoritmos foram selecionados para análise acústica dos sinais, de acordo com o objetivo de cada estudo. Conclusão O método de ausculta cervical de alta resolução e a análise acústica por meio de algoritmos de aprendizado de máquina apresentaram grande potencial para utilização na prática clínica fonoaudiológica para avaliação e monitoramento da deglutição.


ABSTRACT Purpose Describe the instruments used to capture and analyze the acoustic signals obtained from cervical auscultation, and identify those with the greatest potential for application in the speech pathology clinic. Research strategy This is an integrative literature review. Searches were performed in the MEDLINE/PubMed, Scopus and Web of Science databases in November 2020, using relevant keywords combined with Boolean operators. Selection criteria Scientific articles published in Portuguese, Spanish or English in the last five years (2016-2020) and that presented a study of cervical auscultation. Results Ninety-eight articles were found. After the application of selection criteria, 26 articles were selected for this review. Microphones were the most common instruments used to perform cervical auscultation, followed by high-resolution cervical auscultation techniques, which combine acoustic and vibrational signals recorded by a microphone and an accelerometer, respectively. Acoustic analysis was performed using different software packages and/or algorithms depending on the goals of each study. Conclusion The combination of high-resolution cervical auscultation and machine learning for acoustic analysis has great potential for utilization in the clinical assessment and monitoring of swallowing in speech pathology.


Subject(s)
Humans , Auscultation , Stethoscopes , Deglutition/physiology , Speech, Language and Hearing Sciences , Accelerometry
19.
Rev. bras. ativ. fís. saúde ; 25: 1-10, set. 2020. tab, fig
Article in English | LILACS | ID: biblio-1141478

ABSTRACT

This study aims to describe objectively measured physical activity (PA) in different periods of the day in young adults according to sex, socioeconomic position and during weekdays and weekends. This is a cross-sectional analysis carried out with the participants of the 1993 Pelotas Birth Cohort at 22 years. PA was assessed by triaxial accelerometer. Descriptive analyses were performed presenting the time spent on light PA (LPA) and bouted moderate to vigorous PA (MVPA) in different periods of the day (morning - 6am to 11:59 am, afternoon ­ 12pm to 7:59 pm and night ­ 8pm to 11:59pm). The present study included 2,766 individuals (48.2% male and 51.8% female). LPA was higher among women, while bouted MVPA levels were higher among men. The median of PA was higher on weekdays compared to weekends for all intensities. The bouted MVPA medians in the morning and at night were zero minutes for all days and both sexes. The richest group presented a higher percentage of individuals with zero minutes. PA may vary according to different periods of the day and intensity. The absence of PA practice was markedly influenced by sex and socioeconomic position


Este estudo teve o objetivo de mensurar atividade física (AF) objetivamente em diferentes períodos do dia em adultos jovens de acordo com sexo, posição socioeconômica e dia de semana e final de semana. Esta é uma análise transversal conduzida com participantes da Coorte de Nascimentos de 1993 de Pelotas aos 22 anos. AF foi avaliada por um acelerômetro triaxial. Foram realizadas análises descritivas apresentando o tempo em AF leve (AFL) e moderada a vigorosa (AFMV ) em diferentes períodos do dia (manhã ­ 6h às 11:59h, tarde ­ 12h às 19:59h e noite ­ 20h às 0h). O presente estudo incluiu 2.766 individuos (48.2% homens e 51.8% mulheres). AFL foi maior entre as mulheres enquanto AFMV foi maior entre os homens. A mediana de AF foi maior nos dias de semana comparado aos dias de final de semana para qualquer intensidade. As medianas de AFMV pela manhã e noite foram zero minutos para todos os dias nos dois sexos. O grupo econômico mais alto apresentou maior percentual de individuos com zero minutos de AFMV. AF pode variar de acordo com diferentes períodos do dia e intensidades. A ausência de prática de AF foi marcadamente influenciada por sexo e posição socioeconômica


Subject(s)
Periodicity , Accelerometry , Motor Activity
20.
Fisioter. Bras ; 21(4): 363-371, Ago 08, 2020.
Article in English | LILACS | ID: biblio-1283289

ABSTRACT

Physical activity level and fitness condition seem to be related with pulmonary surgical risk in thoracic and cardiac surgeries; however, in abdominal surgery this relation is not clear. Objective: To compare the physical activity level in daily life and during hospitalization before surgery between patients who developed and did not develop postoperative pulmonary complications (PPC) after abdominal surgery and to relate to this outcome. Methods: This prospective cohort enrolled 191 hospitalized candidates (52 ± 14yrs; BMI = 29 ± 11 kg/m2) for upper abdominal surgery. Two different tools related to two distinct moments were used to assess preoperatively the physical activity level. First, to assess life physical activity level, the questionnaire Human Activity Profile (HAP) was administered for all patients. During hospitalization, the accelerometry was performed during 4 consecutive days to assess the time in activity. In addition, lung function, muscle strength and resting energy expenditure were assessed. PPC (pneumonia, atelectasis or severe hypoxemia) were checked until discharge. Multivariate analyses were used. Results: 92% of patients were classified as moderately to physically active in daily life. During hospitalization, patients were inactive during 90% ± 5% of time. There was no association with HAP score and acelerometry. 10.5% of patients developed PPC. Being physically active in daily life and during hospitalization have a protective effect against PPC. Our results show that the physical activity behavior in hospital do not reflect the daily life even in patients not restricted to bed and on preoperative period, patients physically actives on daily life and during hospitalization present less chance to develop PPC after abdominal surgery. (AU)


O nível de atividade física e o condicionamento físico parecem estar relacionados ao risco cirúrgico pulmonar em cirurgias torácicas e cardíacas; no entanto, na cirurgia abdominal, essa relação não é clara. Objetivo: Comparar o nível de atividade física na vida diária e durante a hospitalização antes da cirurgia entre pacientes que desenvolveram e que não desenvolveram complicações pulmonares pós-operatórias (CPP) após cirurgia abdominal e relacionar esses desfechos. Métodos: Esta coorte prospectiva recrutou 191 pacientes hospitalizados não restritos ao leito e candidatos a cirurgia abdominal (52 ± 14 anos; IMC = 29 ± 11 kg/m2 ; VEF1 = 98 ± 19% do predito; CVF = 96 ± 16% do predito). Duas ferramentas diferentes relacionadas a dois momentos distintos foram utilizadas para avaliar o nível no pré-operatório de atividade física. Primeiro, para avaliar o nível de atividade física da vida diária, o questionário Perfil de Atividade Humana (PAH) foi aplicado a todos os pacientes. O PAH possui 94 perguntas sobre a execução de atividades gradualmente mais intensas. O PAH classifica o paciente como inativo (<54 pontos), moderadamente ativo (54 a 73 pontos) e ativo (>73 pontos). Segundo, a acelerometria foi realizada durante 4 dias consecutivos para avaliar o tempo de atividade durante a hospitalização. As CPP (pneumonia, atelectasia ou hipoxemia grave) foram verificadas até a alta. Análises multivariadas foram utilizadas. Resultados: 92% dos pacientes foram classificados como moderados a fisicamente ativos na vida diária. Durante a hospitalização, os pacientes ficaram inativos em 90% ± 5% do tempo. Não houve associação com escore do PAH e acelerometria. Cerca de 10,5% dos pacientes desenvolveram CPP. Ser fisicamente ativo na vida diária e durante a hospitalização tem um efeito protetor contra CPP (Odds ratio [OR] = 0,69, IC 95% 0,01- 0,93; OR=0,61, IC 95% 0,12-0,87, respectivamente). Nossos resultados mostram que o comportamento da atividade física no hospital não reflete o da vida diária, mesmo em pacientes não restritos ao leito e no período pré-operatório, e os pacientes ativos fisicamente na vida diária e durante a internação apresentam menor chance de desenvolver CPP após cirurgia abdominal. (AU)


Subject(s)
Humans , Pneumonia , Postoperative Complications , Exercise , General Surgery , Accelerometry , Hospitalization
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