Fluid and electrolyte intake and loss in elite soccer players during training.

摘要: This study measured fluid balance during a 90-min preseason training session in the first team squad (24 players) of an English Premier League football team. Sweat loss was assessed from changes body mass after correction for ingested fluids and urine passed. composition by collection patches attached to skin at 4 sites. The weather warm (24-29 °C), with moderate humidity (46–64%). mean ± SD over 1.10 0.43 kg, equivalent level dehydration 1.37 0.54% pre-training mass. Mean intake 971 303 ml. Estimated total sweat 2033 ±413 electrolyte concentrations (mmol/L) were: sodium,49± 12; potassium,6.0± 1.3;chloride, 43 10. Total sodium 99 24 mmol corresponds salt (sodium chloride) 5.8 1.4 g. osmolality on samples provided players 666 ±311 mosmol/kg (n=21). These data indicate that losses ...