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1.
J Back Musculoskelet Rehabil ; 33(2): 269-275, 2020.
Article in English | MEDLINE | ID: mdl-31403935

ABSTRACT

BACKGROUND: The literature on physical activity practice through sports as a protective factor for back pain in adolescents is conflicting. However, few studies have aimed to verify if continuity of the practice of physical activity from childhood to adolescence may be related to lower chances of back pain in adolescents. OBJECTIVES: The objective of this study was to analyze the association between physical activity practice from childhood to adolescence and back pain in adolescents. METHODS: The random sample was composed of 870 adolescents with a mean age of 13.7 ± 2.0 years. The continuity of physical activity practice was assessed through the continuity of sports practice from childhood to adolescence. Pain in the neck and low back were evaluated through a questionnaire. RESULTS: The prevalence of neck pain and low back pain in boys was 17.5% and in girls was 20.9% for neck pain and 21.9% for low back pain. Physical activity practice during childhood to adolescence was a protective factor for neck pain (OR = 0.57 [CI = 0.35-0.94]) and low back pain (OR = 0.53 [CI = 0.33-0.86]) in girls and neck pain in boys (OR = 0.52 [CI = 0.30-0.90]), even after adjusting for confounding factors. CONCLUSION: Girls with physical activity practice during childhood to adolescence were less likely to develop neck pain and back pain when compared to girls who did not maintain practice of physical activity. Similar results were observed in boys considering neck pain.


Subject(s)
Exercise/physiology , Low Back Pain/epidemiology , Neck Pain/epidemiology , Adolescent , Child , Female , Humans , Low Back Pain/physiopathology , Male , Neck Pain/physiopathology , Prevalence , Sports , Surveys and Questionnaires
2.
Hypertens Res ; 41(2): 135-140, 2018 Feb.
Article in English | MEDLINE | ID: mdl-29070828

ABSTRACT

High blood pressure (HBP) is a major concern in pediatric populations. Adiposity is highly related to HBP in youths; however, whether body mass index (BMI) or waist circumference (WC) is more strongly associated with HBP in this population is unclear. This cross-sectional study, involving schoolchildren between 10 and 17 years of age from public and private schools, assessed direct measurements of BMI, WC and blood pressure. The socioeconomic level, sedentary behavior, physical activity, alcohol consumption and smoking history were obtained through a questionnaire. A Pearson's correlation and linear regression were used. In total, 1011 adolescents with a mean age of 13.1 (+2.3) years were evaluated. The prevalence of overweight/obesity was 27.7%, and the percentage of abdominal obesity was 19.3%. Adolescent boys and girls who had overweight/obesity or abdominal obesity had higher systolic and diastolic blood pressure (BP) values compared with eutrophic adolescents or those without abdominal obesity. In general, both BMI and WC were related to BP, but WC was more strongly correlated with BP than BMI. In conclusion, although both BMI and WC were related to HBP, WC was more strongly associated with blood pressure in young people.


Subject(s)
Adiposity , Body Mass Index , Hypertension/physiopathology , Waist Circumference , Adolescent , Alcohol Drinking/epidemiology , Blood Pressure , Brazil/epidemiology , Child , Cross-Sectional Studies , Exercise , Female , Humans , Hypertension/epidemiology , Male , Obesity, Abdominal , Prevalence , Sedentary Behavior , Smoking/epidemiology , Socioeconomic Factors , Surveys and Questionnaires
3.
J. pediatr. (Rio J.) ; 93(1): 58-63, Jan.-Feb. 2017. tab, graf
Article in English | LILACS | ID: biblio-841320

ABSTRACT

Abstract: Objective: To evaluate the sensitivity and specificity of different cutoff points of body mass index for predicting overweight/obesity according to body fat values estimated by DEXA among Brazilian adolescents. Methods: Cross-sectional study including 229 male adolescents aged 10-15 years, in which body adiposity and anthropometric measures were assessed. Nutritional status was classified by BMI according to cutoff points described in scientific literature. Results: Moderate agreements were observed between body fat estimated by DEXA and cutoffs proposed by Cole et al. (K = 0.61), Conde and Monteiro (K = 0.65), Must et al. (K = 0.61) and WHO (K = 0.63). The BMI in continuous form showed good agreement with the Dexa (ICC = 0.72). The highest sensitivity was observed for cutoff by Conde and Monteiro (0.74 [0.62, 0.84]) and the highest specificity by Cole et al. (0.98 [0.94, 0.99]). For the areas under the ROC curve of cutoff points analyzed, significant difference comparing the cutoff points by Cole et al. and Conde and Monteiro (0.0449 [0.00294, 0.0927]) was observed. Conclusions: The cutoff proposed by Conde and Monteiro was more sensitive in identifying overweight and obesity when compared to the reference method, and the cutoff proposed by Cole et al. presented the highest specificity for such outcomes.


Resumo: Objetivo: Avaliar a sensibilidade e a especificidade de diferentes pontos de corte do índice de massa corporal para o prognóstico de sobrepeso/obesidade de acordo com os valores de gordura corporal estimados por absorciometria de raios X de dupla energia (DEXA) entre adolescentes brasileiros. Métodos: Estudo transversal que inclui 229 adolescentes do sexo masculino entre 10-15 anos, no qual foram avaliadas a adiposidade corporal e as medidas antropométricas. A situação nutricional foi classificada pelo IMC de acordo com os pontos de corte descritos na literatura científica. Resultados: Foram observadas concordâncias moderadas entre a gordura corporal estimada por DEXA e os cortes propostos por Cole et al. [K = 0,61], Conde e Monteiro [K = 0,65], Must et al. [K = 0,61] e a Organização Mundial de Saúde (OMS) [K = 0,63]. O IMC de forma contínua mostrou uma boa concordância com a DEXA [CCI = 0,72]. A maior sensibilidade foi observada em cortes por Conde e Monteiro [0,74 (0,62, 0,84)] e a maior especificidade por Cole et al. [0,98 (0,94, 0,99)]. Nas áreas abaixo da curva de ROC de pontos de corte analisados, foi observada uma diferença significativa ao se compararem os pontos de corte de Cole et al. e Conde e Monteiro [0,0449 (0,00294, 0,0927)]. Conclusões: O corte proposto por Conde e Monteiro foi mais sensível na identificação de sobrepeso e obesidade em comparação com o método de referência e o corte proposto por Cole et al. apresentou a maior especificidade para esses resultados.


Subject(s)
Humans , Male , Child , Adolescent , Body Mass Index , Overweight/diagnosis , Pediatric Obesity/diagnosis , Prognosis , Body Composition , Brazil , Anthropometry/methods , Cross-Sectional Studies , ROC Curve , Sensitivity and Specificity , Overweight/classification
4.
J Pediatr (Rio J) ; 93(1): 58-63, 2017.
Article in English | MEDLINE | ID: mdl-27543808

ABSTRACT

OBJECTIVE: To evaluate the sensitivity and specificity of different cutoff points of body mass index for predicting overweight/obesity according to body fat values estimated by DEXA among Brazilian adolescents. METHODS: Cross-sectional study including 229 male adolescents aged 10-15 years, in which body adiposity and anthropometric measures were assessed. Nutritional status was classified by BMI according to cutoff points described in scientific literature. RESULTS: Moderate agreements were observed between body fat estimated by DEXA and cutoffs proposed by Cole et al. (K=0.61), Conde and Monteiro (K=0.65), Must et al. (K=0.61) and WHO (K=0.63). The BMI in continuous form showed good agreement with the Dexa (ICC=0.72). The highest sensitivity was observed for cutoff by Conde and Monteiro (0.74 [0.62, 0.84]) and the highest specificity by Cole et al. (0.98 [0.94, 0.99]). For the areas under the ROC curve of cutoff points analyzed, significant difference comparing the cutoff points by Cole et al. and Conde and Monteiro (0.0449 [0.00294, 0.0927]) was observed. CONCLUSIONS: The cutoff proposed by Conde and Monteiro was more sensitive in identifying overweight and obesity when compared to the reference method, and the cutoff proposed by Cole et al. presented the highest specificity for such outcomes.


Subject(s)
Body Mass Index , Overweight/diagnosis , Pediatric Obesity/diagnosis , Adolescent , Anthropometry/methods , Body Composition , Brazil , Child , Cross-Sectional Studies , Humans , Male , Overweight/classification , Prognosis , ROC Curve , Sensitivity and Specificity
5.
Rev. paul. pediatr ; 34(2): 210-215, Apr.-June 2016. tab
Article in English | LILACS | ID: lil-784334

ABSTRACT

Objective: The purpose of this study was to analyze the relationship between martial arts practice (judo, karate and kung-fu) and bone mineral density in adolescents. Methods: The study was composed of 138 (48 martial arts practitioners and 90 non-practitioners) adolescents of both sexes, with an average age of 12.6 years. Bone mineral density was measured using Dual-Energy X-ray Absorptiometry in arms, legs, spine, trunk, pelvis and total. Weekly training load and previous time of engagement in the sport modality were reported by the coach. Partial correlation tested the association between weekly training load and bone mineral density, controlled by sex, chronological age, previous practice and somatic maturation. Analysis of covariance was used to compare bone mineral density values according to control and martial arts groups, controlled by sex, chronological age, previous practice and somatic maturation. Significant relationships between bone mineral density and muscle mass were inserted into a multivariate model and the slopes of the models were compared using the Student t test (control versus martial art). Results: Adolescents engaged in judo practice presented higher values of bone mineral density than the control individuals (p-value=0.042; Medium Effect size [Eta-squared=0.063]), while the relationship between quantity of weekly training and bone mineral density was significant among adolescents engaged in judo (arms [r=0.308] and legs [r=0.223]) and kung-fu (arms [r=0.248] and spine [r=0.228]). Conclusions: Different modalities of martial arts are related to higher bone mineral density in different body regions among adolescents.


Objetivo: Analisar a relação entre a prática de artes marciais (judô, karatê e kung-fu) e a densidade mineral óssea em adolescentes. Métodos: O estudo foi composto por 138 adolescentes (48 praticantes de artes marciais e 90 não praticantes) de ambos os sexos, com média de 12,6 anos. A densidade mineral óssea foi medida com absortometria radiológica de dupla energia em braços, pernas, coluna, tronco, pelve e total. A carga de treinamento semanal e o tempo anterior de envolvimento na modalidade esportiva foram relatados pelo treinador. A correlação parcial testou a associação entre a carga semanal de treinamento e a densidade mineral óssea, controlada para sexo, idade cronológica, prática anterior e maturação somática. A análise de covariância foi usada para comparar os valores de densidade mineral óssea de acordo com os grupos controle e de artes marciais, controlados para sexo, idade cronológica, prática anterior e maturação somática. Associações significativas entre a densidade mineral óssea e a massa muscular foram inseridas em um modelo multivariado e as inclinações dos modelos foram comparadas com o teste t de Student (controle versus arte marcial). Resultados: Os adolescentes envolvidos na prática de judô apresentaram valores maiores de densidade mineral óssea do que os do grupo controle (p=0,042; tamanho de efeito médio [eta-quadrado=0,063]), enquanto a relação entre a quantidade de treinos semanais e a densidade mineral óssea foi significativa entre os adolescentes praticantes de judô (braços [r=0,308] e pernas [r=0,223]) e kung-fu (braços [r=0,248] e coluna [r=0,228]). Conclusões: Diferentes modalidades de artes marciais estão relacionadas com maior densidade mineral óssea em diferentes regiões do corpo em adolescentes.


Subject(s)
Humans , Male , Female , Adolescent , Martial Arts/physiology , Bone Density , Adolescent Development/physiology
6.
Rev Paul Pediatr ; 34(2): 210-5, 2016 Jun.
Article in Portuguese | MEDLINE | ID: mdl-27017002

ABSTRACT

OBJECTIVE: The purpose of this study was to analyze the relationship between martial arts practice (judo, karate and kung-fu) and bone mineral density in adolescents. METHODS: The study was composed of 138 (48 martial arts practitioners and 90 non-practitioners) adolescents of both sexes, with an average age of 12.6 years. Bone mineral density was measured using Dual-Energy X-ray Absorptiometry in arms, legs, spine, trunk, pelvis and total. Weekly training load and previous time of engagement in the sport modality were reported by the coach. Partial correlation tested the association between weekly training load and bone mineral density, controlled by sex, chronological age, previous practice and somatic maturation. Analysis of covariance was used to compare bone mineral density values according to control and martial arts groups, controlled by sex, chronological age, previous practice and somatic maturation. Significant relationships between bone mineral density and muscle mass were inserted into a multivariate model and the slopes of the models were compared using the Student t test (control versus martial art). RESULTS: Adolescents engaged in judo practice presented higher values of bone mineral density than the control individuals (p-value=0.042; Medium Effect size [Eta-squared=0.063]), while the relationship between quantity of weekly training and bone mineral density was significant among adolescents engaged in judo (arms [r=0.308] and legs [r=0.223]) and kung-fu (arms [r=0.248] and spine [r=0.228]). CONCLUSIONS: Different modalities of martial arts are related to higher bone mineral density in different body regions among adolescents.


Subject(s)
Bone Density , Martial Arts/physiology , Adolescent , Child , Cross-Sectional Studies , Female , Humans , Male
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