Hassan Hashemi, Mohammad Saatchi, Mehdi Khabazkhoob, Mohammad Hassan Emamian, Abbasali Yekta, Akbar Fotouhi
Distribution of keratometry and its determinants in a general population of 6- to 12-year-old children
European journal of ophthalmology
increase physical activity levels children knowledge school playgrounds optimally designed important contribution playground variety greening childrens physical activity level recess remains unclear study examined associations school playground variety greening energy expenditure ee elementary school children ecuador belgium additionally moderating effects study site gender studied observational data collected using soplay ten schools east flanders belgium cuenca ecuador data analysed linear mixedeffects model analyses results showed independent study site ee higher playground areas less green elements higher level total variety primary surface associated ee boys active artificial surface present implementation loose equipment somewhat strongly positively associated ee ecuadorian belgian children wellknown restorative effects green elements wish suggest less greening implemented schools however ideally green spaces designed way active play stimulated combining green elements improvements