“…In these articles, the indicators of PA included daily step counts, time spent and/or distance travelled in various activities (i.e., walking, biking, running/jogging, and skating), time spent in sedentary, light, moderate-to-vigorous, vigorous PA, energy expenditure, and exercise frequency. In 14 studies [ 25 , 26 , 29 , 32 , 34 , 36 , 38 , 40 , 43 , 45 , 47 , 50 , 52 , 53 ], PA was assessed solely with subjective measures such as the International Physical Activity Questionnaire. Eight studies [ 21 , 24 , 28 , 30 , 33 , 35 , 39 , 41 ], incorporated only objective measures to assess participants’ PA such as pedometers, accelerometers, wrist or arm-worn activity sensors, heart rate monitors, and mobile applications, such as the iPhone Health app, step-counting app, and ecological momentary assessment app.…”