The sweating response of elite professional soccer players to training in the heat

摘要: Sweat rate and sweat composition vary extensively between individuals, quantification of these losses has a role to play in the individualisation hydration strategy optimise training competitive performance. Data were collected from 26 male professional football (soccer) players during one 90 min pre-season session. This was 2nd session day, carried out 19.30 21.00 h when mean +/- SD environment 32 3 degrees C, 20 5 %rh WBGT 22 2 C. Training consisted interval running 6-a-side games which average heart 136 7 bpm with maximum 178 (n = 19). Before after all weighed nude. During had free access sports drinks (Gatorade) mineral water (Solan de Cabras). All drink bottles before training. Players instructed only their own not spit any drink. No player urinated by patches chest, arm, back, thigh subgroup players. These remained place for first 15 - 30 session, analysed sodium (Na (+)) potassium (K concentration. Body mass loss 1.23 0.50 kg (ranging 2.55 kg), equivalent dehydration 1.59 0.61 % pre-training body mass. The volume lost 2193 365 ml (1672 3138 ml), but 972 335 (239 1724 ml) fluid consumed. 45 16 replaced, this ranged 9 73 %. Na (+) concentration subgroup's 30.2 18.8 mmol/l (15.5 66.3 mmol/l) averaged 67 37 mmol (26 129 mmol). K 3.58 0.56 (2.96 4.50 8 (5 12 drinking employed meant that 23 21 replaced: replacing virtually none (when drink) 62 elite soccer did sufficient replace loss. This, however, is accord data literature other levels athletes events. measurements allow an club's strategy.