“…Of these, 28 assessed PA using accelerometers, 30-52,91,92,95,99,102 9 using pedometers, 53-61 and 14 using questionnaires or diaries 51,92,93 (2 studies used both accelerometers and questionnaires). 51,92 Children using AST accumulated more daily PA than passive travelers in 40 studies 30,32,37-45,48-57,59-66, [69][70][71][72][91][92][93]94,95,99,102 (81.6% of the studies), while the 9 remaining studies found no difference between modes of transportation. 31,[33][34][35][36]46,58,67,68 AST was associated with higher PA levels in 22 of the 28 studies that used accelerometers (78.6%).…”