“…To measure PA as an outcome, accelerometers were the primary device used in 46% of the original studies. Of the remaining studies, 4% used pedometers and 41% used a combination of self-monitoring devices to assess changes in PA, including Fitbit [ 45 , 46 , 52 , 53 , 54 , 55 , 56 , 57 , 59 , 63 , 65 , 66 , 68 , 71 ], Neofit [ 58 ], Garmin Vivofit [ 60 , 61 ], Xiaomi wristband [ 70 ], treadmill and heart rate monitors [ 44 , 47 , 49 , 50 , 58 , 69 ].…”