“…Twenty-four studies examined changes in heart rate (bpm) throughout the operational task or duty being performed [ 15 , 24 , 26 , 28 , 29 , 30 , 33 , 34 , 36 , 37 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 54 , 55 , 56 , 57 , 62 , 63 ], with 19 reporting significant findings [ 20 , 22 , 24 , 26 , 29 , 31 , 34 , 36 , 37 , 42 , 43 , 46 , 47 , 49 , 55 , 57 , 60 , 62 , 63 ]. In all studies with significant findings, mean HR increased from pre- to post-task (from 73.5 bpm to 110.8 bpm) ( p ≤ 0.000).…”