The role of motivation and life satisfaction on chilean university students' physical activity and sedentary behavior / O papel da motivação e satisfação com a vida na atividade física e comportamento sedentário de estudantes universitários chilenos

ABSTRACT Motivation is a fundamental element for the practice of physical activity and the feeling of satisfaction with life. However, little is known about the role of such psychological variables in the lifestyle of Chilean university students. This study aimed to analyse the relationship between life satisfaction and the regulations of motivation and to compare such variables by physical activity level and sedentary behaviour of university students. The sample comprised 95 Chilean university students (63.2% female), with a mean age of 20.92 ± 1.98 years. The instruments were the IPAQ, the Satisfaction with Life Scale, and the Behavioural Regulation in Exercise Questionnaire. Descriptive measures, Pearson's correlation coefficient, and Student's t-tests were used to analyse the data. The results revealed positive and significant correlations between life satisfaction and intrinsic (r = 0,44), integrated (r = 0,38), and identified (r = 0,41) regulation. Students with high levels of physical activity scored higher for intrinsic, integrated, and identified regulation. Those who reported low sedentary behaviour showed higher identified regulation. Therefore, it is suggested that students' motivational regulation may differ on some dimensions as those with higher levels of physical activity show more adaptive motivational regulation. Identified regulation also seems to play an important role in decreasing sedentary behaviour.

RESUMO A motivação é elemento fundamental para a prática de atividade física e o sentimento de satisfação com a vida. Contudo, pouco se sabe sobre o papel de tais variáveis psicológicas no estilo de vida de estudantes universitários chilenos. Este estudo teve como objetivos analisar as relações entre a satisfação com a vida e as regulações da motivação, e comparar tais variáveis em função do nível de atividade física e do comportamento sedentário de estudantes universitários. A amostra foi composta por 95 estudantes universitários chilenos (63,2% do gênero feminino), com idade média de 20,92 ± 1,98 anos. Os instrumentos avaliados foram o IPAQ, a Escala de Satisfação com a Vida e o Questionário de Regulação do Comportamento do Exercício. Medidas descritivas, coeficientes de correlação de Pearson e testes t de Student foram utilizados para analisar os dados. Os resultados revelaram correlações positivas e significativas entre satisfação com a vida e regulação intrínseca (r = 0,44), integrada (r = 0,38) e identificada (r = 0,41). Os estudantes com alto nível de atividade física obtiveram maiores pontuações para regulação intrínseca, integrada e identificada. Os indivíduos que reportaram menor comportamento sedentário possuíam maior regulação identificada. Desse modo, sugere-se que a regulação motivacional dos estudantes pode ser diferente em algumas dimensões, sendo que os indivíduos com maior nível de atividade física semanal demonstram regulações motivacionais mais adaptativas. A regulação identificada também parece desempenhar um papel importante para a redução do comportamento sedentário.

Exploring the relationship between physical literacy levels, engagement and emotionality in physical education classes / Explorando a relação entre os níveis de alfabetização física, engajamento e emotividade nas aulas de educação física

ABSTRACT For the researchers, physical literacy (AFi) is the objective to be achieved in Physical Education, for seeking competent subjects, capable of adhering to physical activity throughout their lives, with continuous personal, social, affective, and physical development. Quantitative, descriptive-correlational research was carried out, with a non-experimental design and a non-probabilistic sample of 322 subjects, students from 12 to 18 years old from private, public, and subsidized schools in Talca, Chile. The aim was to relate the level of AFi, engagement and perceived emotionality. Data were collected by the Perceived Physical Literacy Instrument (PPLI), Behavioral Engagement Questionnaire (BEQ) and Scale for Mood Assessment (EVEA). A positive relationship was identified with a higher level of physical literacy, higher levels of happiness (r=0.37) and emotional engagement (r=0.54), decreasing the indexes of hostility (r=-0.25) and the private establishments reach the highest levels of anxiety (X̅=3.2). It is concluded that the higher the level of AFi, the greater the commitment and the greater the regulation of emotional factors.

RESUMO A alfabetização física (AFi) é o objetivo para os pesquisadores na Educação Física, buscando sujeitos competentes e capazes de aderir à atividade física ao longo de suas vidas, com desenvolvimento contínuo pessoal, social, afetivo e físico. Esta pesquisa é de natureza quantitativa, descritiva-correlacional, com um desenho não experimental e uma amostra não probabilística de 322 sujeitos, estudantes de 12 a 18 anos de escolas particulares, municipais e subsidiadas na cidade de Talca, Chile. O objetivo foi relacionar o nível de AFi, comprometimento e emocionalidade percebida. Os dados foram coletados por meio do Perceived Physical Literacy Instrument (PPLI), Behavioral Engagement Questionnaire (BEQ) e Escala de Avaliação do Estado de Ânimo (EVEA). Identificou-se uma relação positiva com um maior nível de alfabetização física, maior nível de alegria (r=0,37) e comprometimento emocional (r=0,54), diminuindo os índices de hostilidade (r=-0,25). As escolas particulares atingem os níveis mais altos de ansiedade (X̅=3,2). Conclui-se que um maior nível de AFi está associado a um maior comprometimento e maior regulação dos fatores emocionais.

Tendencia de consejerías en actividad física y enfermedades cardiometabólicas en el Maule, Chile: estudio previo a pandemia por COVID-19 entre 2012 y 2019 / Trend in Physical Activity Counseling and Cardiometabolic Diseases in Maule, Chile: COVID-19 Pre-Pandemic Study between 2012 and 2019

BACKGROUND: Physical activity (PA) practice reduces the adverse effects of COVID-19. PA counseling promotes healthy lifestyles and prevents cardiometabolic diseases. AIM: To assess the trend in cases of PA counseling and the cardiometabolic disease between 2012 and 2019 (before COVID-19) in a southern Chilean region. MATERIAL AND METHODS: Records of Maule Region Health Service for 731.163 men, and 829.097 women aged < 10 to ≥ 65 years were analyzed. The average annual percentage change (AAPC) during the study period and the annual percentage change (APC) during intermediate periods, were calculated. RESULTS: There was a significant decrease in PA counseling in women in the study period (AAPC: −13.6%). In the 2012-2017 period a significant decrease in counseling for total, men and women were observed (APC: −18.1, −16.5 and −19.1%, respectively). Obesity increased significantly in total, men and women in the 2012-2019 period (AAPC: 10.1, 8.5 and 10.7%, respectively). The same trend was observed for hypertension (AAPC: 8.1, 8.5 and 7.6% respectively) and elevated blood glucose (AAPC: 10, 11.5 and 9.6%, respectively). CONCLUSIONS: In the study period PA counseling decreased along with an increase in obesity, hypertension and high blood glucose. Increasing PA counseling is a mainstay in the prevention of cardiometabolic diseases and probably to prevent contagion and complement the treatment of COVID-19.

A Six-Minute Walk Test: Oxygen Uptake and Distance Predicted / Prueba de Caminata de Seis Minutos: Consumo de Oxígeno y Distancia Predicha

Abstract Background: Maximum oxygen consumption is an indicator of cardiorespiratory fitness. Aim: The purpose was, first, to relate and compare the V̇O2max as the dependent variable with the estimated distance in the six-minute walk test (SMWT) as the independent variable in university students and, secondly, to relate the distance (dependent) with demographic and anthropometric variables (independents). Methodology: A correlational, descriptive, and quantitative study with a non-experimental design was conducted on 110 university students. In the study, basic anthropometry and vital signs were measured. A direct method of V̇O2max (Bruce test) on a treadmill was applied. Then, the distance covered in the SMWT was evaluated with two equations available in the scientific literature. Differences between men and women were measured in the tests, the correlation between the distances estimated with V̇O2max and anthropometric variables, and repeated ANOVA measurement tests between V̇O2max and estimated distance were analyzed with the SPSS v.22 program (p<0.05). Results: Significant correlations were found between V̇O2max and estimated distances (p<0.05) in the total sample, men and women, and in some cases, the distance correlated with gender, age, weight, height, and BMI (p<0.05). However, there were differences between V̇O2max and distances estimated in the SMWT (p<0.001). Conclusions: The V̇O2max measurement method is different from the distance prediction equations, although they have a significant relationship.

Resumen Antecedentes: El consumo máximo de oxígeno es un indicador de la aptitud cardiorrespiratoria. Objetivo: El objetivo fue relacionar y comparar el V̇O2máx. como variable dependiente con la distancia estimada en la prueba de caminata de seis minutos (PC6M) como variable independiente en estudiantes universitarios, a la vez relacionar la distancia (dependiente) con variables demográficas y antropométricas (independientes). Metodología: Estudio cuantitativo, no experimental, transversal, y descriptivo-correlacional en el que participaron 110 estudiantes universitarios. Se midió antropometría básica y signos vitales, y se aplicó un método directo de V̇O2máx. (Test de Bruce) en cinta rodante, luego se estimó la distancia recorrida en PC6M con dos ecuaciones disponibles en la literatura. Diferencias entre hombres y mujeres en las pruebas aplicadas, correlación entre las distancias estimadas con el V̇O2máx. y variables antropométricas, y la prueba de ANOVA de medidas repetidas entre el V̇O2máx. y las distancias estimadas fueron utilizadas con el programa SPSS v.22 (p<0,05). Resultados: Se encontró correlaciones significativas entre el V̇O2máx. y distancias estimadas (p<0,05) en la muestra, en hombres y mujeres, y en algunos casos la distancia se correlacionó con el sexo, la edad, el peso, la estatura y el IMC (p<0,05). Sin embargo, hubo diferencias entre el V̇O2máx. y las distancias estimadas en la PC6M (p<0,001). Conclusiones: El método directo de V̇O2máx. es distinto de las ecuaciones de predicción de distancia, aunque tienen relación significativa.

Resumo Antecedentes: O consumo máximo de oxigênio é um indicador de aptidão cardiorrespiratória. Objetivo: O objetivo é relacionar e comparar a V̇O2 máx. como variável dependente com a distância estimada no teste de caminhada de seis minutos (TC6M) como uma variável independente em estudantes universitários, ao mesmo tempo, relacionar a distância (dependente) com variáveis demográficas e antropométricas (independente). Metodologia: Estudo quantitativo, não-experimental, transversal, descritivo-correlativo, no qual participaram 110 estudantes universitários. Antropometria básica e sinais vitais foram medidos, e um método direto de V̇O2 máx. (teste Bruce) foi aplicado na esteira, então a distância coberta em TC6M foi estimada com duas equações disponíveis na literatura. Diferenças entre homens e mulheres nos testes aplicados, correlação entre distâncias estimadas com V̇O2 máx. e variáveis antropométricas, e medidas repetidas teste ANOVA entre V̇O2 máx. e distâncias estimadas foram usadas com SPSS v.22 (p<0,05). Resultados: Foram encontradas correlações significativas entre V̇O2 máx. e distâncias estimadas (p<0,05) na amostra, em homens e mulheres, e em alguns casos a distância correlacionada com sexo, idade, peso, altura e IMC (p<0,05). Entretanto, houve diferenças entre V̇O2 máx. e distâncias estimadas em TC6M (p<0,001). Conclusões: O método direto de V̇O2 máx. é diferente das equações de previsão de distância, embora elas tenham relações significativas.

Impacto de un contexto de pandemia sobre la calidad de vida de adultos jóvenes / Impact of a pandemic context on the quality of life of young adults

Introducción: La cuarentena y el aislamiento social son las medidas más recomendadas por las autoridades de salud con el objetivo de reducir la interacción social entre las personas y disminuir el riesgo de contagio por la COVID-19 en la comunidad. Sin embargo, estas restricciones y limitaciones pueden traer consecuencias en la calidad de vida relacionada con la salud de adultos jóvenes. Objetivo: Comparar la calidad de vida autorreportada entre un entorno sin pandemia vs. un contexto bajo alerta sanitaria por la COVID-19, en adultos jóvenes. Métodos: Estudio retrospectivo; 157 adultos jóvenes (63 mujeres y 94 hombres), de entre 18 y 28 años, respondieron el cuestionario de salud SF-36 en 2 situaciones: contexto sin pandemia (septiembre de 2019) y contexto de pandemia (abril de 2020). El SF-36 incluye 36 preguntas agrupadas en 8 ítems: función física, rol físico, dolor corporal, salud general, vitalidad, función social, rol emocional y salud mental. Resultados: Al comparar las evaluaciones entre los contextos con y sin pandemia, se observó una disminución de la calidad de vida en las dimensiones vitalidad (p = 0,004), función social (p = 0,001), rol emocional (p = 0,001), salud mental (p = 0,003) y salud general (p = 0,001). Las dimensiones más alteradas fueron el rol emocional y la salud general, las cuales disminuyeron un 39,5 por ciento y 21,0 por ciento, respectivamente. Conclusión: La calidad de vida relacionada con la salud de adultos jóvenes se ve disminuida en un contexto de cuarentena por la COVID-19, principalmente, en las dimensiones psicológicas y sociales(AU)

Introduction: Quarantine and social isolation are the actions most recommended by health authorities with the aim of reducing social interaction between people and reducing the risk of COVID-19 infection in the community. However, these restrictions and limitations can have consequences on the health-related quality of life of young adults. Objective: To compare the self-reported quality of life between a pandemic-free environment versus a context of COVID-19 pandemic in young adults. Methods: Retrospective study; 157 young adults (63 women and 94 men) between 18 and 28 years old answered the SF-36 health questionnaire in 2 situations: context without pandemic (September 2019) and context of pandemic (April 2020). The SF-36 includes 36 questions grouped into 8 items: physical function, physical role, body pain, general health, vitality, social function, emotional role, and mental health. Results: When comparing the evaluations between the contexts with and without a pandemic, a decrease in the quality of life was observed in the vitality dimensions (p = 0,004), social function (p = 0,001), emotional role (p = 0,001), health mental (p = 0,003) and general health (p = 0,001). The most altered dimensions were emotional role and general health, which decreased by 39,5 percent and 21,0 percent, respectively. Conclusions: This study determined that the health-related quality of life of young adults is diminished in context of quarantine by COVID-19, mainly in the psychological and social dimensions(AU)

¿Cuál es la asociación entre actividad física, sedentarismo y riesgo de desarrollar cáncer en población adulta? Una revisión de la literatura

RESUMEN La práctica regular de actividad física (AF) ha sido asociada a importantes beneficios metabólicos, como también a la disminución del riesgo de desarrollar algunos tipos de cáncer. El objetivo de esta revisión especial es sintetizar la evidencia científica existente sobre la asociación de los niveles de AF y el riesgo de desarrollar cáncer. Esto permitirá una mejor orientación a futuras políticas públicas destinada a aumentar los niveles de AF en la población chilena. Se buscaron los últimos reportes mundiales y nacionales sobre AF y cáncer en conjunto con una búsqueda de artículos científicos en las bases de datos de Pubmed, Web of Sciences, Scopus, Medline, Scielo y Google Scholar utilizando las siguientes palabras claves: "Exercise», «Neoplasms», "Cancer", "Colorectal", "Breast", "Endometrium", "Physical activity", "Exercise", "Sedentary" and "Sports". Esta revisión entrega evidencia sobre la asociación de la AF con un menor riesgo de múltiples tipos de cáncer, incluyendo cáncer colorrectal, mama y endometrio, pero aún se necesita más investigación con relación a la asociación entre AF y otros tipos de cáncer.

ABSTRACT Regular physical activity (PA) has been associated with important metabolic benefits, as well as a decreased risk of developing some types of cancer. The objective of this scoping review is to synthesize the existing scientific evidence on the association of PA levels and the risk of developing cancer. This will allow a better orientation to future public policies aimed at increasing PA levels in the Chilean population. We searched for the latest global and national reports on PA and cancer as well as scientific databases (Pubmed, Web of Sciences, Scopus, Medline, Scielo and Google Scholar) using the following keywords: "exercise", "neoplasms", "cancer", "colorectal", "breast", "endometrium", "physical activity", "exercise", "sedentary lifestyle" and "sports". Our review supports the protective association between PA and a lower risk of several cancers including colorectal, breast and endometrial cancer. However, more research is still needed to elucidate the role of PA on the risk for other common cancers.

Factores asociados a una baja calidad de vida en adultos chilenos durante la cuarentena por COVID-19

Background: The quarantine and social distancing implemented during COVID 19 pandemic may hamper the quality of life of the population. Aim: To determine the factors associated with a low quality of life during COVID 19 quarantine in Chilean adults. Material and Methods: The SF-36 survey about quality of life was answered by 1,082 Chilean adults aged between 18 and 60 years, who were quarantined by the COVID-19 health alert. Other variables studied were sociodemographic background, nutritional status, lifestyles, level of physical activity, sedentary behavior and sleep hours. Risk factors associated with low quality of life were identified by logistic regression analysis for each of the 8 dimensions evaluated in the SF-36 questionnaire. Results: The factors that increased the probability of having a lower general health perception were being female (Odds ratio (OR) = 1.29; p = 0.05), being physically inactive (OR = 2.76 p < 0.01), unhealthy hours of sleep (OR = 1.58, p < 0.01), smoking (OR = 1.59, p < 0.01) and eating junk food (OR = 2.26; p < 0.01). For the other dimensions of quality of life, the most frequently repeated factors were being female, junk food consumption, and being physically inactive and sedentary. Conclusions: There are factors associated with a low quality of life during the quarantine of the COVID-19 pandemic in the Chilean population. Their identification could reinforce remedial actions at the government level to benefit the health of the population during this health emergency.

Control postural en niños con sobrepeso y obesidad: una revisión de la literatura / Postural control in children with overweight and obesity: A review of literature

RESUMEN El sobrepeso y obesidad infantil se han convertido en un problema de salud a nivel mundial. A medida que la incidencia y la gravedad del sobrepeso y la obesidad siguen aumentando en niños y niñas, la determinación de los efectos fisiológicos y consecuencias funcionales se hacen cada vez más importantes. Estas últimas han sido las menos estudiadas, subestimándose su impacto sobre el desempeño motor. El control postural juega un papel importante en el desarrollo motor del niño, ya que es necesario para lograr nuevas posturas en etapas tempranas de la vida y para la adquisición de habilidades motoras más complejas. Esta revisión revela que los niños y niñas con sobrepeso y obesidad presentan un déficit del control postural evidenciado principalmente a partir de evaluaciones estáticas en una plataforma de fuerza y el análisis de la excursión del centro de presión. Entre las causas de la alteración del equilibrio en los niños y niñas con exceso de peso destaca la interacción de factores mecánicos, sensoriales y neuromusculares. Un pobre control postural provocaría un aumento del riesgo de caídas y lesiones, retraso en el desarrollo motor, limitaciones de la movilidad, alteración de la marcha y dificultad para la adquisición de otras habilidades motoras.

ABSTRACT Overweight and childhood obesity have become a global health problem. As the incidence and severity of overweight and obesity in children continue to rise, determining the physiological effects and functional consequences are becoming increasingly important. The latter have been the least studied, underestimating its impact on motor performance. Postural control plays an important role in the motor development of the child, as it is necessary to achieve new postures in the early stages of life and to acquire more complex motor skills. This review reveals that children with overweight and obesity have a deficit of postural control evidenced mainly from static assessments in a force platform and the analysis of the excursion of the center of pressure. Among the causes of impaired balance in overweight children is the interaction of mechanical, sensory and neuromuscular factors. Poor postural control would lead to an increased risk of falls and injuries, delayed motor development, limited mobility, impaired gait, and difficulty in acquiring other motor skills.

Capacidad cardiopulmonar en sujetos sanos medida por método directo y prueba de campo / Cardiopulmonary capacity in healthy subjects measured by direct method and field test

Resumen La prueba de caminata de seis minutos se ha aplicado generalmente en enfermos, y algunos estudios han propuesto modelos para predecir el consumo máximo de oxígeno. Nuestro objetivo fue elaborar una ecuación para predecir el consumo máximo de oxígeno en la prueba de caminata de seis minutos para estudiantes universitarios. Participaron 140 estudiantes. Se aplicó el test de marcha y después se realizó una prueba de ejercicio gradual para determinar el consumo máximo de oxígeno. Se elaboró una ecuación multivariada y el análisis se hizo con el programa SPSS v.22 (p < 0.05). El modelo predictivo incluyó el sexo, edad, índice de masa corporal, distancia recorrida y la frecuencia cardíaca de recuperación (r = 0.83; p < 0.001). La ecuación cumplió con los supuestos de independencia (p = 0.13), de normalidad (p = 0.49) y de homocedasticidad (p = 0.64). El diagrama de Bland-Altman indicó que no hubo diferencias significativas entre la ecuación y la medición del consumo máximo de oxígeno (p = 0.89), con un intervalo de confianza de 0.054 ml·kg·min-1 (95% IC [-0.72; 0.83]). La ecuación predice el consumo máximo de oxígeno. Se sugiere evaluar estudiantes universitarios considerando diferencias biológicas y ambientales entre países.

Abstract The six-minute walk test has been generally applied in people with pathologies and some studies have proposed models to predict maximum oxygen consumption. Our objective was to elaborate on an equation to predict the maximum oxygen consumption in the six-minute walking test for university students. A hundred and forty people participated in this study. The six-minute walking test was applied and after on a gradual exercise test was performed to determine the maximum oxygen consumption. A multivariate equation was developed and the analysis was done using the SPSS v.22 program (p < 0.05). The predictive model include gender, age, body mass index, distance performed and heart rate recovery (r = 0.83; p < 0.001). The equation fulfilled the assumptions of independence (p = 0.13), normality (p = 0.49) and homoscedasticity (p = 0.64). The Bland-Altman diagram indicated that there were no significant differences between the equation and the measurement of the maximum oxygen consumption (p = 0.89), with a confidence interval of 0.054 ml·kg·min-1 (95% CI [-0.72; 0.83]). The equation predicts the maximum oxygen consumption. It is suggested to evaluate university students considering biological and environmental differences between countries.

Comparación de la calidad de vida en estudiantes universitarios según nivel de actividad física / Comparison of quality of life in university students with different levels of physical activity

Introducción: Los universitarios son susceptibles a estilos de vida poco saludables, los que podrían deterior su calidad de vida (CV). Objetivo: Comparar la CV en estudiantes universitarios según su nivel de actividad física (AF). Materiales y métodos: Estudio descriptivo, transversal. Participaron 126 estudiantes universitarios de ambos sexos de las facultades de salud, educación e ingeniería de tres universidades de Talca (Chile). La CV fue evaluada mediante el cuestionario WHOQOL-BREF. Se aplicó la t de student para muestras independientes para comparar los dominios de la CV y las características basales entre los grupos. El tamaño del efecto se calculó con la d de Cohen. Resultados: Los universitarios inactivos presentaron mayor índice de masa corporal (IMC) (p=0,041), en contraste, los universitarios activos mostraron una puntuación significativamente mayor que los inactivos en CV global (p=0,002; d=0,67), CV en salud (p=0,013; d=0,50), dominio físico (p=0,038; d=0,43), psicológico (p=0,003; d=0,63) y medio ambiente (p=0,001; d=0,80). Conclusiones: Los estudiantes universitarios activos (moderado/alto nivel de AF) presentan mejor CV global y en salud, además presentan mejor puntuación en CV en los dominios físico, psicológico medio ambiente al compararlos con estudiantes inactivos.

Introduction: University students are susceptible to unhealthy lifestyles, which could deteriorate their quality of life (QL). Objective: To compare the QL in university students who have different levels of physical activity (PA). Materials and methods: A descriptive, cross-sectional study that included 126 university students of both sexes from Health, Education and Engineering programs of three universities in Talca (Chile). The QL was assessed through the WHOQOL-BREF questionnaire. A student's t-test of independent samples was used to compare both the domains of the QL and the baseline characteristics between the groups. The effect size was calculated with Cohen's d. Results: Inactive university students had a higher body mass index (BMI) (p=0.041). In contrast, active students showed significantly higher scores than inactive ones in overall QL (p=0.002; d=0.67), health QL (p=0.013; d=0.50), physical domain (0.038; d=0.43), psychological domain (p=0.003; d=0.63) and environment domain (p=0.001; d=0.80). Conclusions: Active university students (with moderate and high PA levels) have better overall and health QL. They also have better QL scores in the physical, psychological and environmental domains when compared to inactive students.

Un modelo para predecir el consumo de oxígeno según signos vitales y hábitos de vida en estudiantes universitarios / A model to predict maximal oxygen uptake using vital signs and lifestyles in university students

Background Maximal oxygen uptake (V̇O 2 max) is measured using maximal and submaximal exercise tests or can be predicted using demographic variables, body adiposity, vital signs and lifestyles. Aim To elaborate an equation to predict the V̇O 2 max in the absence of cardiopulmonary test in university students. Material and Methods V̇O 2 max was measured directly using a cardiopulmonary test on a treadmill in 121 students aged 22 ± 2 years (59 males). Data about drug and medication use, physical activity [PA], vital signs at rest, and basic anthropometry were collected. The independent variables were included in a multivariate equation and the validity of the model was checked through distribution assumptions and according to the concordance limits of the Bland-Altman diagram. Results The best predictive equation for V̇O 2 max incorporated sex, age, body mass index, blood pressure, heart rate, smoking habits and PA as independent variables. The distributional assumptions were fulfilled (p > 0.05), there were no differences between the equation and the measurement of V̇O 2 max (p = 0.854) with a bias of -0.08 ml·kg·min -1 (95% confidence intervals [-0.95; 0.78]). Conclusions The resulting equation predicts V̇O 2 max based on body adiposity, physiological parameters and life habits.

Prueba de caminata de seis minutos ¿es posible predecir el consumo de oxígeno en personas con patologías? Una revisión bibliográfica / Six-Minute Walk Test. Is It Possible to Predict Oxygen Consumption in People with Pathologies? A Bibliographic Review / Teste de caminhada seis minutos. É possível prever o consumo de oxigênio em pessoas com patologia? Uma revisão bibliográfica

Resumen La prueba de caminata de seis minutos (PC6M) consiste en recorrer la mayor distancia posible y se caracteriza por ser una prueba de fácil realización. El objetivo de esta revisión fue examinar la relación entre las variables de distancia recorrida, patologías cardíacas, pulmonares y el consumo de oxígeno de una prueba de criterio en cinta rodante y/o cicloergómetro, y las ecuaciones de predicción del VO2 en la PC6M de Maldonado e Ingle (2006), Vanhelst (2013) y Costa (2017) para personas con patologías. El manuscrito es una revisión bibliográfica que utilizó las bases de datos Scopus y WOS, con artículos en inglés, español y portugués entre 2000 y 2017. La distancia es la variable que más se midió y que más se asoció con el VO2, encontrándose correlaciones significativas con valores de 0.01 hasta 0.8, las patologías más relacionadas con el VO2 máx. fueron la hipertensión pulmonar, enfermedad pulmonar obstructiva, insuficiencia cardíaca, disfunción sistólica ventricular y accidente cerebro-vascular y el cicloergómetro fue el más utilizado en las pruebas de criterio de VO2 máx. Solo una ecuación fue elaborada para niños que eran obesos la que incluyó distancia e IMC (Vanhelst), otra ecuación fue para adultos con enfermedad cardíaca que además incluía el sexo (Costa), una en pacientes con disfunción sistólica ventricular que aparte incorporó la edad, volumen espiratorio y hemoglobina (Ingle) y otra fórmula fue para adultos con insuficiencia cardíaca que consideró la distancia (Maldonado). Se sugiere utilizar la ecuación más apropiada y elaborar modelos predictivos para personas con diversas características.

Abstract The six-minute walk test (SMWT) consists of walking as far as possible and is characterized by being an easy test to perform. This paper examines the relationship between the variables of distance traveled, cardiac and pulmonary pathologies, and the oxygen consumption of a criterion test on treadmill and/or cycle ergometer, and the prediction equations of VO2 in the SMWT of Maldonado and Ingle (2006), Vanhelst (2013) and Costa (2017) for people with pathologies. The paper is a bibliographic review that used the Scopus and WOS databases containing articles in English, Spanish and Portuguese, published between 2000 and 2017. Distance is the variable that was most measured, and it was most associated with VO2; correlations with values from 0.01 to 0.8 were found. The pathologies most related to VO2 max were pulmonary hypertension, obstructive pulmonary disease, and ventricular heart failure and stroke; and the cycle ergometer was the most commonly used in the VO2 max criterion tests. Only one equation was created for children who were obese; it included distance and BMI (Vanhelst). Another equation was generated for adults with heart disease that also included sex (Costa). Besides, one equation was for patients with ventricular systolic dysfunction that also incorporated age, volume expiratory and hemoglobin (Ingle); another one was created for adults with heart failure, and this formula considered the distance (Maldonado). It is suggested to use the most appropriate equation and create predictive models for people with different characteristics.

Resumo O teste de caminhada de seis minutos (TC6M) consiste em andar o mais longe possível e é caracterizado como um teste fácil. O objetivo desta revisão foi examinar a relação entre as variáveis distância percorrida, patologias cardíacas, pulmonares e o consumo de oxigênio de um teste de critério em esteira e/ou ciclo ergômetro, e as equações de predição do VO 2 no TC6M de Maldonado e Ingle (2006), Vanhelst (2013) e Costa (2017) para pessoas com patologias. O manuscrito é uma revisão bibliográfica que utilizou as bases de dados Scopus e WOS, com artigos em inglês, espanhol e português entre 2000 e 2017. A distância é a variável mais medida e mais associada ao VO 2, encontrando correlações significativas com valores de 0,01 a 0,8, as patologias mais relacionadas ao VO 2 max. foram a hipertensão pulmonar, doença pulmonar obstrutiva, insuficiência cardíaca, disfunção sistólica ventricular e acidente vascular encefálico e o ciclo ergômetro foi o mais utilizado nos testes do critério VO 2 max. Apenas uma equação foi desenvolvida para crianças obesas, que incluíram distância e IMC (Vanhelst), outra equação foi para adultos com doença cardíaca que também incluiu sexo (Coast), uma em pacientes com disfunção sistólica ventricular que incorporaram a idade, volume expiratório e hemoglobina (Ingle) e outra fórmula foi para adultos com insuficiência cardíaca que considerou a distância (Maldonado). Sugere-se utilizar a equação mais adequada e desenvolver modelos preditivos para pessoas com características diversas.

Competency based physical education teacher training: the case of a chilean university / Formação por competências de profesores de educação física: o caso de uma universidade chilena

ABSTRACT In Chile, the training of physical education teachers has traditionally been based on hygienist models, within the bio-metric paradigm. Due to the social changes and the needs of the country, the implementation of reflective models of professional practice in the teacher training programs in Physical Education is encouraged. At the Universidad Católica del Maule (UCM), the model of professional competences in the Physical Education program is developed, in which the possible domains of development are determined by identifying the minimum knowledge articulated transversally by performing vertical adjustments through the different semester modules throughout the formative itinerary. This proposal has been placed as a success, but the work by competencies still lacks more didactic coordination and curricular adjustments, and a continuous review, a, situation that is normal in any vocational training proposal.

RESUMO No Chile, a formação de professores de educação física tem sido tradicionalmente baseada em modelos higienistas, dentro do paradigma biométrico. Devido às mudanças sociais e às necessidades do país, é incentivada a implantação de modelos reflexivos de prática profissional na capacitação de professores em Educação Física. Na Universidade Católica de Maule (UCM), é desenvolvido o modelo baseado em competências profissionais na formação de professores de Educação Física, no qual os possíveis domínios de desenvolvimento são determinados identificando o conhecimento mínimo articulado de forma transversal realizando ajustes verticais por meio dos diferentes módulos semianuais e horizontais ao longo do itinerário formativo. Esta proposta tem se colocado como de sucesso, mas o trabalho por competências ainda carece de maior entrosamento didático e ajustes curriculares, fato este normal dentro de qualquer proposta de formação profissional, ou seja, a revisão continuada.

Ecuación para predecir el consumo máximo de oxígeno a partir de la prueba de caminata de seis minutos en jóvenes sanos / An equation to predict maximum oxygen consumption from the six-minute walk test in healthy young adults

Background: The six-minute walk test (SMWT) is an easy-to-use test that measures walking distance. Aim: To elaborate an equation to estimate the maximum oxygen consumption (VO2 max) using the results of the SMWT. Material and Methods: Forty men and 40 women aged 22.5 ± 2 years, underwent a SMWT to measure the total walked distance and the recovery heart rate (RhR) Also, VO2 max was estimated from the maximal workload achieved in a cyclo-ergometer using the Storer test. A multivariate regression analysis resulted in a prediction equation that was validated with distributional assumptions of normality, independence and homoscedasticity. The limits of concordance of the predictive model were checked with the Bland-Altman diagram. Results: Body mass index (BMI), sex, RhR and total walked distance explained VO2 max variance by 3.4, 73.1, 17.9 and 32.8%, respectively. The prediction equation achieved was VO2 max (ml.min−1) = −3672.585 + (966.472 × Sex [1: female, 2: male]) + (-18.492 X RhR [beats.minute−1]) + (9.191 X Distance [m]) + (87.707 × BMI). The R2 of the equation was 0.91 (p < 0.01). Conclusions: This equation predicts VO2 max in Chilean university students according to sex, BMI, cardiovascular response and performance in the SMWT.

A six-minute walking test: maximum oxygen consumption in physical education students / Teste de caminhada de seis minutos: o consumo máximo de oxigênio em estudantes de educação física

ABSTRACT The Six-Minute Walking Test (SMWT) was completed just in few times in apparently healthy young individuals and university students, while the maximal volume of oxygen consumption (VO2max) prediction has not been taken into consideration. The aim of this study was to elaborate a prediction equation for VO2max from the heart rate recovery (HRR) after completion the SMWT. 127 young in the first stage completed the SMWT and Course Navette Test (CNT), 17 in the second stage (test-retest) completed the SMWT and CNT, and 20 subjects in the third stage completed the SMWT and Bruce test. All physical education students (PES) completions an informed consent. A significant correlation was observed between VO2max estimated trough the CNT and HRR after the SMWT (rho= -0.3; p= 0.001). The correlation between the same variables was r= -0.72 (p= 0.001) in the second stage, and a significant correlation (r= -0.65; p= 0.002) was observed between VO2max directly measured in Bruce test and HRR after the SMWT. From the correlation a prediction equation was elaborated is y= 92.468-(0.278*20-second-HRR) and the standard error of estimation (SEE) was 7.17 ml·kg-1·min-1. The HRR achieved after the SMWT may predict VO2max in PES.

RESUMO O teste de caminhada de seis minutos (SMWT) foi concluído em poucas ocasiões em indivíduos jovens aparentemente saudáveis e estudantes universitarios, enquanto que a predição máxima do consumo de oxigênio (VO2max) não foi tomada em consideração. O objetivo deste estudo foi elaborar uma equação de predição para VO2max a partir da recuperação da freqüência cardíaca (HRR) após a realização do SMWT. 127 jovens na primeira etapa completaram o SMWT eo Course Navette Test (CNT), 17 na segunda etapa (teste-reteste) completaram o SMWT e CNT, e 20 sujeitos na terceira etapa completaram o teste SMWT e Bruce test. Todos os estudantes de educação física (PES) completam o consentimento informado. Observou-se uma correlação significativa entre o VO2máx estimado pela CNT e a HRR após o SMWT (rho= -0,3; p= 0,001). A correlação entre as mesmas variáveis foi r= -0,72 (p= 0,001) na segunda etapa e observou-se uma correlação significativa (r= -0,65; p= 0,002) entre VO2max medido diretamente no teste de Bruce e HRR após o SMWT. A partir da correlação foi elaborada uma equação de predição de y= 92,468-0,278*20-segundo-HRR) eo erro padrão de estimação (SEE) foi de 7,17 ml·kg-1·min-1. O HRR conseguido após o SMWT pode predizer VO2max no PES.

Pausa activa como factor de cambio en actividad física en funcionarios públicos / Active break as a changing factor in the physical activity of public officials

Introducción El aumento de la actividad física es uno de los componentes más importantes de un estilo de vida saludable vinculándose a beneficios físicos y mentales. La inactividad física aumenta la frecuencia y la duración de las incapacidades laborales lo cual presupone implicaciones desfavorables para el trabajador, para la empresa y para la sociedad. Objetivo Configurar el desempeño diferenciado del nivel de actividad física por unidad de trabajo pre y posintervención con pausas activas en funcionarios públicos en Chillán, Chile. Métodos Investigación descriptiva, exploratoria. Se aplicó el Cuestionario Internacional de Actividad Física formato corto, antes y después de la intervención con pausas activas en los mismos individuos, para medir el nivel de actividad física. Las pausas activas fueron de 15 minutos dos veces por semana, en el lugar de trabajo y se apoyaron en estrategias comunicacionales para fomentar la actividad física. Resultados Los datos revelaron que hubo una diferencia significativa después de la intervención, ya que aumenta el nivel de actividad física (t=-1,391) con el 95 % de nivel de confianza. Conclusiones Las pausas activas aumentan el nivel de actividad física de los usuarios, se establece un desempeño diferenciado pre y posintervención, y no se establece relación de dicho desempeño por unidad de trabajo.

Introduction The increased physical activity is one of the most important elements of a healthy lifestyle that renders physical and mental benefits. Lack of physical activity increases frequency and duration of working disabilities leading to unfavourable implications for the worker, the company and the society as a whole. Objective To shape the differentiated performance of the level of physical activity per working unit in the public officials from Chillán, Chile before and after the intervention with active breaks. Methods Exploratory descriptive intervention. The short version of the International Questionnaire of Physical Activity was applied before and after the intervention with active pauses to the same individuals, in order to measure the level of physical activity. The active pauses took 15 minutes twice a week at the workplace, and they were based on communication strategies to promote physical activity. Results Data yielded that there is significant difference after the intervention, since the level of physical activity increases (t=-1,391), with 95% CI. Conclusions The active breaks increase the level of physical activity of the users; differentiated performance before and after intervention is established and the association of such performance per working unit is not stated.