Timothy J Walker, Harold W Kohl, John B Bartholomew, Charles Green, Maria E Fernández
Using Implementation Mapping to develop and test an implementation strategy for active learning to promote physical activity in children: a feasibility study using a hybrid type 2 design
Implementation science communications
research finds significant sleep deprivation among adolescents early school start times study surveyed sleep patterns elementary school students districtwide change earlier start times students grades 35 completed selfadministered sleep survey spring 2009 third grade n 216 fourth grade n 214 fifth grade n 259 total n 689 2010 third grade n 168 fourth grade n 194 fifth grade n 263 total n 625 school start time switched 820 745 fall 2009 students entering grade 3 experienced larger shift 910 745 due moving kindergartensecondgrade building thirdtofifthgrade building descriptive statistics quantified responses grade prechange wake time across grades similar postchange fourth fifth graders woke average 3040 minutes earlier children grades year third graders woke average 8 minutes later compared prechange third graders reported longer average total sleep times 24 minutes fourth fifth graders reported average sleep times 4 9 minutes shorter respectively students grades previous year percentage students grade reporting later weekend wake bed times decreased postchange reports sleepiness somewhat increased fifth graders postchange school start time change decrease total amount sleep first study kind report effects start time change elementary school students