Gui Zhi Cheng, An Chen, Youdi Xin, Qian Qian Ni
Using the teach-back method to improve postpartum maternal-infant health among women with limited maternal health literacy: a randomized controlled study
BMC pregnancy and childbirth
aims study investigate injuries b increased physical education pe influenced development physical fitness schoolchildren simultaneously investigate possible pe effect modified sport participation outside school hours longitudinal controlled schoolbased study six schools 270 min pe extra pe four schools 90 min pe followed 25 years total 1054 children included analysis normal pe 443 extra pe 611 development fitness analyzed using composite zscores six fitness tests measured four times information injury sport derived weekly automated mobile phone text messages surveying presence musculoskeletal pain organized sport participation injury extra pe influenced development physical fitness injury decreased development physical fitness 101 composite zscore units 95 ci 157 045 extra pe increased physical fitness development 080 95 ci 049 110 composite zscore units influence injury dependent extra pe modifying effect found mean weekly sport participation outside school hours conclusion extra pe positive effect whereas injuries negative effect physical fitness development schoolchildren