The impact of quarantine on body image and lifestyle habits in resistance training practitioners / Impacto da quarentena sobre a percepção da imagem corporal e hábitos dos praticantes de musculação / Impacto de la cuarentena sobre la percepción de la imagen corporaly hábitos de los practicantes de musculación

ABSTRACT Introduction In order to curb the abrupt advance of "Coronavirus Disease 2019" (COVID-19) and prevent the collapse of the health system, authorities around the world have opted for social distancing strategies that include closing gyms, among other measures. Objectives This study analyzed the effect of social distancing on resistance training practitioners' quality of life and perception of body image in silhouette. Methods The volunteers were contacted through social media; data were collected between April 13 and 19, 2020, through a structured questionnaire, comprised of an Informed Consent Form, four questions about COVID-19 and restrictive measures; and twenty-nine questions designed to characterize the individuals' habits; as well as the Short Form Health Survey 36 questionnaire. All the questionnaires were applied over the Internet, using Google Forms®. After collection, the data were tabulated and interpreted using the software program AppleNumbers®, and subsequently presented as mean, standard deviation and percentiles. Results The results revealed changes in perception of body image and decreased frequency and satisfaction with training. There was also an increase in sedentary behavior, food intake, and amount of sleep; and a reduction in parameters related to health and quality of life. Conclusions The strategy of social distancing, adopted to curb the progress of COVID-19, has harmful consequences for resistance training practitioners, such as increased calorie intake, stress and anxiety, as well as possible psychological effects. These consequences, in turn, lead to changes in self-perception of body image and in the quality of training. Level of Evidence III; Cross-sectional study of non-consecutive patients; without uniformly applied reference standard.

RESUMO Introdução Com o intuito de conter o avanço abrupto da "Coronavirus Disease 2019" (COVID-19) e evitar o colapso do sistema de saúde, autoridades mundiais optaram por estratégias de distanciamento social que compreendem o fechamento de academias, entre outras providências. Objetivos Este estudo analisou o efeito do distanciamento social sobre a qualidade de vida e a percepção da imagem corporal em silhueta de praticantes de treinamento de força. Métodos O contato com os voluntários foi realizado pelas mídias sociais e os dados foram coletados entre 13 e 19 de abril de 2020, por meio de um questionário estruturado, composto pelo Termo de consentimento livre e esclarecido, quatro questões sobre COVID-19 e medidas restritivas, vinte e nove questões destinadas à caracterização dos hábitos dos indivíduos, além do questionário Short Form Health Survey 36. Todos os questionários foram realizados no Google Forms®, com o auxílio da Internet. Depois da coleta, os dados foram tabulados e interpretados com o software AppleNumbers® e apresentados como média, desvio padrão e percentis. Resultados Os resultados revelaram alterações na percepção da imagem corporal, diminuição do volume e da satisfação com o treino. Ademais, foi observado um aumento do comportamento sedentário, da ingestão de alimentos e da quantidade de sono, além da redução dos parâmetros relacionados com a saúde e a qualidade de vida. Conclusões A estratégia de distanciamento social adotada para conter o avanço da COVID-19 revela consequências deletérias para os praticantes de treinamento de força, a saber, aumento da ingestão calórica, do estresse, da ansiedade, além de possíveis acometimentos de ordem psicológica. Essas consequências, por sua vez, promoveram alterações na percepção da autoimagem e na qualidade do treinamento. Nível de Evidência III; Estudo transversal de pacientes não consecutivos; sem padrão de referência aplicado uniformemente .

RESUMEN Introducción Con la intención de contener el avance abrupto de la "Coronavirus Disease 2019" (COVID-19) y evitar el colapso del sistema de salud, autoridades mundiales optaron por estrategias de distanciamiento social que comprenden el cierre de gimnasios, entre otras medidas. Objetivos Este estudio analizó el efecto del distanciamiento social sobre la calidad de vida y la percepción de la imagen corporal en silueta de practicantes de entrenamiento de fuerza. Métodos El contacto con los voluntarios fue realizado a través de las redes sociales y los datos fueron colectados entre el 13 y el 19 de abril de 2020, por medio de un cuestionario estructurado, compuesto por el Término de consentimiento libre y esclarecido, cuatro cuestiones sobre COVID-19 y medidas restrictivas, veintinueve cuestiones destinadas a la caracterización de los hábitos de los individuos, además del cuestionario Short Form Health Survey 36. Todos los cuestionarios fueron realizados en Google Forms®, con la ayuda de Internet. Después de la colecta, los datos fueron tabulados e interpretados con el software AppleNumbers® y presentados como promedio, desviación estándar y percentiles. Resultados Los resultados revelaron alteraciones en la percepción de la imagen corporal, disminución del volumen y de la satisfacción con el entrenamiento. Además, fue observado un aumento del comportamiento sedentario, de la ingestión de alimentos y de la cantidad de sueño; además de la reducción de los parámetros relacionados con la salud y la calidad de vida. Conclusiones La estrategia de distanciamiento social adoptada para contener el avance de la COVID-19 revela consecuencias deletéreas para los practicantes de entrenamiento de fuerza, tales como aumento de la ingestión calórica, estrés, ansiedad, además de posibles acometimientos de orden psicológico. Esas consecuencias, a su vez, promovieron alteraciones en la percepción de la autoimagen y en la calidad del entrenamiento. Nivel de evidencia III; Estudio transversal de pacientes no consecutivos; sin patrón de referencia aplicado uniformemente.

Recent Trends in Sedentary Behaviors among Chinese Children According to Demographic and Social Characteristics / 生物医学与环境科学（英文）

Objective@#This study aims to explore trends in sedentary behavior among Chinese children aged 6-17 years per demographic and social characteristics.@*Methods@#A total of 4,341 children aged 6-17 years who participated in the @*Results@#From 2004 to 2015, sedentary time among children aged 6-17 years increased from 23.9 ± 0.6 h/week to 25.7 ± 0.6 h/week ( @*Conclusions@#Sedentary time among Chinese children aged 6-17 years showed an upward trend from 2004 to 2015, especially among children residing in rural areas and regions with low urbanization levels.

Physical Activity and Sedentary Behaviors among Chinese Children: Recent Trends and Correlates / 生物医学与环境科学（英文）

Objective@#This study was aimed at examining the trends and correlates of physical activity (PA) and sedentary behaviors among Chinese children.@*Methods@#A total of 4,341 subjects (6,936 observations) aged 6-17 years who participated in the China Health and Nutrition Survey (2004-2015) were included. Of the subjects, 41% participated in the survey twice or more. Random-effects ordinal regression models and repeated-measures mixed-effects models were used to examine the PA trends. Quantile regression models were applied to examine the factors influencing PA and sedentary behaviors.@*Results@#From 2004 to 2015, the prevalence of physical inactivity among Chinese children aged 6-17 years increased by 5.5% [odds ratio ( @*Conclusions@#A declining PA trend among Chinese children aged 6-17 years was observed from 2004 to 2015, and certain subgroups and geographical areas are at higher risk of physical inactivity.

Obesidad central, sarcopenia y conductas sedentarias en el riesgo cardiovascular por score Framingham y área total de placa carotídea / Central Obesity, Sarcopenia, and Sedentary Behaviors Related to Cardiovascular Risk by Framingham Score and Total Carotid Plaque Area

Resumen Antecedentes: las enfermedades cardiovasculares son la principal causa de morbimortalidad mundial. La obesidad, sarcopenia, actividad física insuficiente y las conductas sedentarias impactan de manera sinérgica en el riesgo cardiovascular. Objetivo: evaluar el riesgo cardiovascular en relación con la actividad física, las conductas sedentarias y la composición corporal. Materiales y métodos: estudio observacional transversal de 95 personas adultas de ambos sexos. Se determinó el riesgo cardiovascular mediante el score de Framingham y el score de Framingham corregido por área total de placa aterosclerótica; la composición corporal, por antropometría, bioimpedancia y dinamometría como indicador indirecto; y la actividad física y las conductas sedentarias, por cuestionario validado. Se condujeron análisis descriptivos, de correlación y asociación con un 95 % de confianza. Resultados: el 95 % de las mujeres y el 98 % de los varones presentaron riesgo cardiovascular elevado; el 51,5 %, obesidad; el 95,5%, obesidad central; y el 47,3 %, fuerza muscular disminuida. Se observaron asociaciones positivas significativas entre riesgo cardiovascular y circunferencia de cintura (rho=0,26; p=0,024). No hubo asociación significativa entre la fuerza muscular y el riesgo cardiovascular (rho=-0,21; p=0,065). La conducta sedentaria tuvo un efecto promotor del riesgo cardiovascular (OR=3,9; p=0,033). Conclusiones: la obesidad central y permanecer más de 6/h día en posición sedente son factores asociados al riesgo cardiovascular.

Abstract Background: Cardiovascular diseases are the principal cause of morbidity and mortality worldwide. Obesity, sarco-penia, insufficient physical activity, and sedentary behaviors synergistically impact cardiovascular risk. Objective: Evaluate cardiovascular risk in relation to physical activity, sedentary behaviors, and body composition. Materials and Methods: Cross-sectional observational study in 95 total males and females. Cardiovascular risk was determined using the Framingham score, which corrects for total area of atherosclerotic plaque. Risk was also determined using body composition, anthropometry, bioimpedance and dynamometry as indirect indicators, physical activity, sedentary behaviors, and a validated questionnaire. Descriptive, correlation and association analyses were conducted with 95% confidence. Results: 95% of women and 98% of men presented with an elevated cardiovascular risk; 51.5% with obesity, 95.5% central obesity, and 47.3% with diminished muscular strength. Significant positive associations were observed between cardiovascular risk and waist circumference (rho=0.26; p=0.024). There was no significant association between muscle strength and cardiovascular risk (rho=-0.21, p=0.065). Sedentary behavior increased cardiovascular risk (OR=3.9; p=0.033). Conclusions: Central obesity and staying more than six hours per day in a sitting position are factors associated with cardiovascular risk.

Recomendaciones prácticas para evitar el desacondicionamiento físico durante el confinamiento por pandemia asociada a COVID-19 / Practical recommendations to avoid physical deconditioning during confinement due to pandemic associated with COVID-19

Introducción: El aislamiento social durante la pandemia por COVID-19 incluye el confinamiento en casa, que redunda en incremento de la inactividad física y de comportamientos sedentarios, favoreciendo el desacondicionamiento físico. Las personas desacondicionadas físicamente tienen alteraciones metabólicas y sistémicas por la falta de movimiento. Objetivo: Presentar recomendaciones prácticas, y de bajo costo sobre actividades basadas en la evidencia para evitar el desacondicionamiento físico durante el confinamiento en casa, que se pueden mantener a largo plazo, incluso después de la pandemia. Materiales y métodos: Revisión documental sobre estrategias para conducir estilos de vida saludable en casa que disminuyan los efectos negativos a nivel fisiológico producidos por el confinamiento derivado de la pandemia. Resultados: La evidencia señala que el confinamiento en casa incrementa los niveles de inactividad física y el comportamiento sedentario; la realización de actividad física bajo condiciones particulares puede entre otros, fortalecer el sistema respiratorio e inmunológico, mantener la condición física y generar efectos positivos sobre la salud mental. Conclusiones: Los hábitos relacionados con la práctica de actividad física en casa se deben mantener en el tiempo, se recomienda realizarla de manera programada, establecer horarios de descanso entre las actividades y durante la noche, y elegir aquellas que generen disfrute.

Introduction: Social isolation during the COVID-19 pandemic includes home confinement, which results in increased physical inactivity and sedentary behaviors, favoring physical deconditioning. Deconditioned people have metabolic and systemic disorders due to the lack of movement. Objective: To present practical, low-cost recommendations on evidence-based activities to avoid physical deconditioning during home confinement, which can be maintained over the long term, even after the pandemic. Materials and methods: Documentary review on strategies to support healthy lifestyles at home that decrease the negative effects at a physiological level produced by the confinement derived from the pandemic. Results: Evidence indicates that home confinement increases the levels of physical inactivity and sedentary behavior; executing physical activity under particular conditions, among other effects, can strengthen the respiratory and immune systems, maintain physical condition and generate positive effects on mental health. Conclusions: The habits related to the practice of physical activity at home should be maintained over time, it is recommended to do it on a scheduled basis, define rest times between activities and during the night, and choosing those that generate enjoyment.

Screen Time in Under-five Children

Context:Screen-viewing in childhood is primarily a mean of entertainment, during the unstructured time. We aimed to review the burdenof the problem, delineate the associated factors and correlates, evaluate the impact of screen-time on the overall health of under-fivechildren, and the interventions to reduce screen-time. Evidence acquisition:Published articles from January 2009 to June 2018 weresearched through PubMed, Clinical Key, Scopus, Embase, and Google Scholar using key Medical Subject Heading words. Results: Theburden of screen-time varied from 21% to 98% in the middle-income, and 10% to 93.7% in the high-income countries. The socialecological model was used to illustrate associated factors and correlates including child, caregiver, micro and macro digital-mediaenvironment related factors. The interventions included increase in the physical activity, reduction in the body mass index, improvingsleep and dietary behaviors etc. The effectiveness of these interventions ranged from 0.3 minutes (standard error 13.3) to -47.16minutes (standard error 2.01). Conclusion: Clinicians should obtain history of screen-time in children, and advise limiting the screenexposure according to the child’s age. There is a need to generate evidence on burden and effectiveness of interventions amongchildren in the Indian settings, owing to the limited data.

Review of current research on sedentary behavior in older people / 中华健康管理学杂志

With population aging and socio?economic development, the sedentary time and behavior of the elderly are increasing, resulting in an increase in health risks as well. This review aimed to investigate the effects of sedentary behavior on the health of the elderly, factors contributing to sedentary behavior in the elderly, and sedentary behavior interventions for the elderly, as well as provide reference for sedentary behavior investigation and intervention study, to eventually achieve health promotion for the sedentary elderly.

Association between the time of sedentary behaviors and risk of type 2 diabetes / 中华预防医学杂志

Objective@#To explore the relationship between the time of sedentary behaviors and the risk of type 2 diabetes mellitus (T2DM) among rural adults in Henan Province.@*Methods@#A total of 1 227 adults from Houzhai village in Zhengzhou City and Qiaomiao village in Jiaozuo City in Henan Province were randomly selected to participate in the survey; each of them finished a questionnaire and accepted physical examination and test of biochemical indicators. The participants were divided into case and control groups according to whether suffering from T2DM. A Pearson linear correlation and linear regression model analysis were used to investigate the relevance between the time of sedentary behaviors and fasting plasma glucose (FPG); meanwhile, a multi factor logistic regression model was used to analyze the relationship between the time of sedentary behaviors and T2DM.@*Results@#The average FPG level among the participants was (5.4±2.5) mmol/L, and the average time of sedentary behaviors was (234.5±156.5) min per day. The prevalence rate of T2DM in subgroups whose time of sedentary behaviors were separately 0-<2.5, 2.5-<4.5, 4.5-<6.5 and ≥6.5 h/day were 15.8% (72/457), 19.3% (73/379), 16.7% (35/210) and 20.4% (37/181), respectively. There was a linear regression relationship between the time of sedentary behaviors(x) and FPG(y), the regression equation was: y=5.081+0.001x (t=3.01, P=0.003). Logistic regression model analysis showed that participants whose time of sedentary behaviors ≥6.5 h/day had significantly higher risk of T2DM than those whose time of sedentary behaviors between 0-2.4 h/day (OR=1.77, 95%CI: 1.11-2.81) after age and gender adjusted. However, the associations only exist in males and adults ≥50 years old according to sex and age stratification. It showed that participants with sedentary time ≥6.5 h/day had significantly higher risk of T2DM than those with sedentary time between 0-<2.5 h/d, with the corresponding OR (95%CI) at 2.34 (1.21-4.52) and 2.22 (1.19-4.16), respectively.@*Conclusion@#The prolonged sedentary time is a risk factor of type 2 diabetes. After stratification by gender and age, the correlation only found in males and adults aged ≥50 years old.

Association between sedentary life style and risks of metabolic syndrome and diabetes mellitus type 2 / 中华流行病学杂志

Objective To explore the association of sedentary life style with risk of metabolic syndrome (MS) and diabetes mellitus type 2 (T2DM).Methods A total of 6 016 local residents aged 18 years or older in Fujian province were recruited by multi-stage stratified cluster sampling method in 2010-2011.Data,including demographic information,physical activity and sedentary time were collected.Indices related to height,weight,waist circumference,blood pressure and blood lipid were determined while MS and T2DM were diagnosed by IDF (2005) and WHO (1999) criteria.Logistic regression was used to estimate the correlations between sedentary behavior and MS or T2DM.Results The prevalence rates of MS and T2DM were 19.0％ and 8.0％ respectively,in local residents aged 18 years or older,in Fujian province.The overall rate of sedentary behavior was 18.1％,with the mean sedentary time as 4.3 hours.Both data showed significantly differences (P＜0.001) among control group,MS without T2DM group,MS with T2DM group and T2DM without MS group.Compared with the group of sedentary time ＜2.0 h/d,1) the group with 2.0-3.5 h/d was significantly correlated with MT group (OR=1.44,95％ CI:1.03-2.03,P＜0.05),2) groups of 3.5-6.0 h/d and ≥6.0 h/d were significantly correlated with M,T,MT group,respectively (OR:1.49-1.76 and 1.28-1.58 respectively,95％ CI:1.19-2.45 and 1.02-2.23 respectively,P＜ 0.05),and 3) sedentary behavior was independently associated with an increased risk of MT group (OR=1.82,95％ CI:1.33-2.48,P＜0.01) and M group (OR=1.43,95％CI:1.14-1.78,P＜0.01),after the adjustment for factors as age,sex,cigarette smoking,alcohol drinking,BMI,education,occupation,sedentary behavior/sedentary time.Conclusion MS and T2DM were associated with sedentary lifestyle,but these findings should be confirmed through further longitudinal studies.

Association of sedentary behavior and time with risk of metabolic syndrome / 中华内分泌代谢杂志

Objective To explore the association of sedentary behavior and time with risk of metabolic syndrome (MS).Methods A total of 10 149 subjects were recruited from local residents aged ≥40 years old in Jiashan County by cluster-random sampling method.The data including physical activity,job,sedentary time,and sleep,etc.were collected.Height and body weight,waist circumference,blood pressure,blood glucose,blood lipid,etc.were determined.Logistic regression was used for correlation analysis.Results The prevalence of MS was 28.64％ in local residents over 40 years old in Jiashan.The rate of sedentary behavior in all subjects was 67.57％,with 3 h sedentary time on average.Compared with non-MS group,the rates of sedentary behavior and sedentary time were significantly higher in MS group (P＜0.01).Multivariate logistic regression analysis showed that sedentary behavior was independently associated with an increased risk of MS after adjustment for age,sex,body mass index (BMI),smoking,drinking,and sedentary time(OR=1.16,95％ CI 1.03-1.30,P=0.017).Increased sedentary time was associated with higher risks of hypertension,type 2 diabetes mellitus,and dyslipidemia (P ＜ 0.05 or P ＜ 0.01).Sedentary time ≥ 5 h/d independently increased the risk of MS (OR =1.15,95％ CI 1.01-1.31,P =0.034).Conclusions There is a high prevalence of MS in adults over 40 years old living in the eastern coastal rural area.MS and its related diseases are closely associated with sedentary behavior and its duration.

Actividad física y conducta sedentaria en estudiantes terciarios y niversitarios de la Región Metropolitana de Buenos Aires (Argentina) / Physical activity and sedentary behavior in tertiary and university students of Metropolitan Area of Buenos Aires (Argentina)

Os comportamentos de saúde dos estudantes universitários são de particular interesse não só para o bem-estar dos próprios alunos, mas também porque uma vez graduados poderia atuar como modelos em seus ambientes profissionais e pessoais. Na Argentina, o registro é escassa e dispersa. Os objetivos deste estudo são analisar os níveis de atividade física e comportamentos sedentários em estudantes universitários da nossa região, e também ver se existem diferenças entre estudantes de carreiras relacionadas à atividade física e estudantes de outras carreiras. Nós examinamos o nível de atividade física e comportamentos sedentários em uma amostra de estudantes universitários de ambos os sexos de 17 a 35 anos na Região Metropolitana de Buenos Aires (n=2131) através de um questionário validado internacionalmente chamado Global Physical Activity Questionnaire. Alunos de cursos de graduação relacionados com a actividade física tiveram um nível significativamente mais elevado de atividade e comportamentos sedentários significativamente mais baixos do que os estudantes de outros cursos de graduação. 19% dos homens e 30% das alunas de outros cursos de graduação tiveram um baixo nível de atividade física, considerados insuficientes para promover a saúde. Em ambos os grupos de homens alunos eram mais ativos que as mulheres, não houve diferenças significativas entre os sexos em comportamentos sedentários. O subgrupo de mulheres estudantes em cursos de graduação não relacionados à atividade física foi o único que tinha o perfil menos favorável da actividade física e comportamentos sedentários. O domínio dos transportes parece ser o mais sensível e apropriada para o desenvolvimento de estratégias de intervenção em atividade física e comportamento sedentário nesta população.

Health behaviors of college students are of particular interest not only for the wellbeing of students themselves but also because once graduates could act as role models in their professional andpersonal environments. In Argentina, antecedents are sparse and scattered. The aims of this work are to survey physical activity and sedentary behavior levels in university and tertiary students in our region, and also see if there are differences among students of courses related to physical activity and students of other courses. It was surveyed the level of physical activity and sedentary behaviors in a sample of tertiary and university students of both sexes from 17 to 35 years of age in the Metropolitan Region of Buenos Aires (n = 2131) through the Global Physical Activity Questionnaire which is an internationally validated recall questionnaire. Students of courses related to physical activity had a significantly higher level of activity and a significantly lower level of sedentary behaviors than students in other courses. 19% of male and30% of female students from other courses had a low physical activity level, considered insufficient to promote health. In both groups, male students were more active than female, and there were no significant differences between sexes in sedentary behaviors. The subgroup of female students in courses not related to physical activity was the one who had the less favourable profile of physical activity and sedentary behaviors. The transport domain seems to be the most susceptible and suitable for developing intervention strategies in physical activity and sedentary behavior in this population.