Qing-Bo Meng, Yi-Xin Yin, De-Zheng Zhang, Guo-Ping Yang
[Study on syndrome quantification, differentiation and classification of traditional Chinese medicine with data envelopment analysis]
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
vital reduce proportion sedentary behavior children understanding duration behavioral context needed present study examined schoolgrade sex differences domainspecific sedentary times concurrence screentime guidelines among japanese elementary school children total 625 children 330 boys surveyed 2010 2014 using questionnaire data regarding participants grade first third grades lower grades fourth six grades higher grades sex weight height collected addition time spent per day engaging specific sedentary behavior separately 1 reading listening music 2 tv video viewing 3 tv game use 4 internet use excluding class 5 homework 6 car travel twoway analysis covariance logistic regression analyses adjusted bmi moderate vigorous physical activity used examine schoolgrade sex differences sedentary behaviors independent risk exceeding recommended total daily screen time 2 h 625 children mean minutes sd sedentary behavior per week 1 6 903 1234 5350 3566 1673 2221 239 709 2649 1853 334 612 weekdays 421 700 3239 2320 1230 964 158 499 744 964 713 849 weekends respectively differences minutes sedentary behavior participants 2010 2014 eg tv game use homework weekdays weekdays car travel weekends boys spent time tv game use girls spent time reading listening music homework car travel highergrade students spent time reading listening music using computer homework highergrade students 209 times 95 ci 132 330 whole week 208 times 95 ci 145 300 weekday 188 times 95 ci 129 274 weekend likely spend 2 h per day domains 2 4 screentime lowergrade students time spent engaging domainspecific sedentary behavior differed according sex school grade highergrade students less likely meet screentime guidelines findings highlight need domainfocused strategies decrease sedentary behavior japanese schoolage children