Purpose To examine the association between bullying victimization and meeting recommendations for the 24-h movement behaviors of physical activity,screen use,and sleep in adolescents.Methods Participants were a sample...Purpose To examine the association between bullying victimization and meeting recommendations for the 24-h movement behaviors of physical activity,screen use,and sleep in adolescents.Methods Participants were a sample of US adolescents from the 2015–2019 national Youth Risk Behavior Survey(N=43,847;Mean age=16.0±1.2 years;50.7%female).The bullying victimization variables included the bullying expe-riences at school and online.Weighted multivariable logistic regressions analyzed associations between bullying victimiza-tion and meeting recommendations for 24-h movement behaviors controlling for age,sex,race/ethnicity,and weight status.Results Adolescents meeting non-academic screen and sleep recommendations had 25%(OR=0.75,95%CI 0.69–0.82)and 19%(OR=0.81,95%CI 0.74–0.89)lower odds to be bullied at school.Adolescents meeting non-academic screen recommen-dation had 27%lower odds(OR=0.73,95%CI 0.58–0.91)of experience online bullying.Male adolescents who met physical activity,non-academic screen use,and sleep recommendations had lower odds of experience the bullying at school of 29%(OR=0.71,95%CI 0.59–0.85),26%(OR=0.74,95%CI 0.61–0.90),and 31%(OR=0.69,95%CI 0.55–0.86),respectively.Among the females,non-academic screen use was the only movement behavior yielded statistical significance,in that those who met the recommendation had 15%(OR=0.85,95%CI 0.73–0.98)lower odds of experience the bullying at school.Conclusion The presence of meeting 24-h movement behavior recommendations associates with a lower probability of bullying at school and online in adolescents.Interestingly,these associations tended to be stronger and more consistent in males compared to females.展开更多
Background Physical activity programs using components of resistance have the potential to improve health in school chil-dren.The purpose of this study was to examine the effect of a school-based resistance exercise p...Background Physical activity programs using components of resistance have the potential to improve health in school chil-dren.The purpose of this study was to examine the effect of a school-based resistance exercise program on physical fitness in elementary school students.Methods The sample was 256 children(mean age=8.3±2.5 years;119 girls)from kindergarten to 5th grade.Participants performed a 10-min resistance exercise 2-3 times in each school day.Physical fitness outcomes were assessed using President’s Physical Fitness Challenge test.Measures were collected at baseline and at a 6-month post-test time point.A 2×2 doubly MANOVA was employed to examine the effect of sex and time.Results The multivariate model was statistically significant with a main time effect(Wilks’λ=0.19,F=290.9,P<0.001).Follow-univariate tests found significant differences between time-points on flex arm hang(P=0.033),shuttle run(P<0.001),and 1-mile run/walk times(P<0.001).Conclusions A 6-month resistance exercise program improved upper body strength and cardiorespiratory endurance in elementary school aged children.The use of resistance exercise intervention during school day can be effectively used to promote physical fitness and ultimately improve the health of children.展开更多
文摘Purpose To examine the association between bullying victimization and meeting recommendations for the 24-h movement behaviors of physical activity,screen use,and sleep in adolescents.Methods Participants were a sample of US adolescents from the 2015–2019 national Youth Risk Behavior Survey(N=43,847;Mean age=16.0±1.2 years;50.7%female).The bullying victimization variables included the bullying expe-riences at school and online.Weighted multivariable logistic regressions analyzed associations between bullying victimiza-tion and meeting recommendations for 24-h movement behaviors controlling for age,sex,race/ethnicity,and weight status.Results Adolescents meeting non-academic screen and sleep recommendations had 25%(OR=0.75,95%CI 0.69–0.82)and 19%(OR=0.81,95%CI 0.74–0.89)lower odds to be bullied at school.Adolescents meeting non-academic screen recommen-dation had 27%lower odds(OR=0.73,95%CI 0.58–0.91)of experience online bullying.Male adolescents who met physical activity,non-academic screen use,and sleep recommendations had lower odds of experience the bullying at school of 29%(OR=0.71,95%CI 0.59–0.85),26%(OR=0.74,95%CI 0.61–0.90),and 31%(OR=0.69,95%CI 0.55–0.86),respectively.Among the females,non-academic screen use was the only movement behavior yielded statistical significance,in that those who met the recommendation had 15%(OR=0.85,95%CI 0.73–0.98)lower odds of experience the bullying at school.Conclusion The presence of meeting 24-h movement behavior recommendations associates with a lower probability of bullying at school and online in adolescents.Interestingly,these associations tended to be stronger and more consistent in males compared to females.
文摘Background Physical activity programs using components of resistance have the potential to improve health in school chil-dren.The purpose of this study was to examine the effect of a school-based resistance exercise program on physical fitness in elementary school students.Methods The sample was 256 children(mean age=8.3±2.5 years;119 girls)from kindergarten to 5th grade.Participants performed a 10-min resistance exercise 2-3 times in each school day.Physical fitness outcomes were assessed using President’s Physical Fitness Challenge test.Measures were collected at baseline and at a 6-month post-test time point.A 2×2 doubly MANOVA was employed to examine the effect of sex and time.Results The multivariate model was statistically significant with a main time effect(Wilks’λ=0.19,F=290.9,P<0.001).Follow-univariate tests found significant differences between time-points on flex arm hang(P=0.033),shuttle run(P<0.001),and 1-mile run/walk times(P<0.001).Conclusions A 6-month resistance exercise program improved upper body strength and cardiorespiratory endurance in elementary school aged children.The use of resistance exercise intervention during school day can be effectively used to promote physical fitness and ultimately improve the health of children.