“…The mean age of athletes ranged from 16 to 28 years; however, one case study recruited a 31-year-old athlete 53. Athletes were recruited from 21 sports including soccer (n=14),25 36–38 42 46 47 5052 53 60 64 72 73 Australian rules football (n=11),23 33 39 45 50 52 57–59 63 70 cycling (n=6),42 48–50 54 63 rugby league (n=6),29–31 39 68 69 swimming (n=5),32 50 62 63 71 rugby union (n=5),24 34 50 52 66 netball (n=6),741 55 56 61 74 basketball (n=3),50 63 67 rowing (n=3),43 44 51 mountain biking (n=3),42 50 63 triathlon (n=3),42 50 63 American football,75 76 race walking (n=2),50 63 ice hockey,77 diving (n=1),51 running (n=1),40 volleyball (n=1),42 judo (n=1),13 handball (n=1),42 canoeing (n=1),51 speed skating (n=1),51 synchronised swimming (n=1)65 and ballet (n=1) 35. ‘Competitive-elite’ athletes were recruited by 65% (n=35) of studies,23–25 29–34 36 38 39 42 45 48–53 55–59 63 65–70 74 75 77 and 37% (n=20) recruited ‘semi-elite’ athletes (online supplementary file 2).…”