“…Three studies each were conducted in Canada [ 103 – 105 ] and the USA [ 106 – 108 ], and one study in each of Finland [ 109 ], Iceland [ 110 ], Netherlands [ 33 ], Spain [ 111 ], Sweden [ 112 ], and Tanzania [ 113 ]. A total of 15 studies focused on children’s physical activity during recess as the phenomena of interest [ 32 , 33 , 85 , 87 , 90 , 93 , 94 , 97 – 100 , 103 , 104 , 109 , 111 ], while 10 studies were interested in children’s development and play more broadly [ 86 , 88 , 89 , 91 , 92 , 95 , 96 , 101 , 102 , 105 , 107 , 113 ]. The remaining studies covered a range of other disciplines, including, environmental education and health ( n = 2) [ 89 , 110 ], education ( n = 1) [ 108 ], injury prevention ( n = 1) [ 112 ], psychology ( n = 1) [ 106 ], and human geography ( n = 1) [ 88 ].…”