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- Title
Estimated Sweat Loss, Fluid and Carbohydrate Intake, and Sodium Balance of Male Major Junior, AHL, and NHL Players During On-Ice Practices.
- Authors
Gamble, Alexander S. D.; Bigg, Jessica L.; Vermeulen, Tyler F.; Boville, Stephanie M.; Eskedjian, Greg S.; Jannas-Vela, Sebastian; Whitfield, Jamie; Palmer, Matthew S.; Spriet, Lawrence L.
- Abstract
Several previous studies have reported performance decrements in teamsport athleteswho dehydrated approximately 1.5-2%of their body mass (BM) through sweating. This study measured on-ice sweat loss, fluid intake, sodium balance, and carbohydrate (CHO) intake of 77 major junior (JR; 19 ± 1 years), 60 American Hockey League (AHL; 24 ± 4 years), and 77 National Hockey League (NHL; 27 ± 5 years) players. Sweat loss was calculated from pre- to post-exerciseBM plus fluid intake minus urine loss. AHL (2.03 ± 0.62 L/hr) and NHL (2.02 ± 0.74 L/hr) players had higher sweat rates (p < .05) than JR players (1.63 ± 0.58 L/hr). AHL (1.23 ± 0.69%; p = .006) and NHL (1.29% ± 0.63%; p < .001) players had 30% greater BM losses than JR players (0.89% ± 0.57%). There was no difference in fluid intake between groups (p > .05). Sodium deficits (sodium loss -- intake) were greater (p < .05) in AHL (1.68 ± 0.74 g/hr) and NHL (1.56 ± 0.84 g/hr) players compared with JR players (1.01 ± 0.50 g/hr). CHO intake was similar between groups (14--20 g CHO/hr), with 29%, 32%, and 40% of JR, AHL, and NHL players consuming no CHO, respectively. In summary, sweat rates were high in all players, but themajority of players (74/77, 54/60, and 68/77 of JR, AHL, and NHL, respectively) avoided mild dehydration (>2% BM) during 60 min of practice. However, 15%, 41%, and 48% of the JR, AHL, and NHL players, respectively, may have reached mild dehydration and increased risk of performance decrements in a 90-min practice.
- Subjects
ATHLETIC ability; DEHYDRATION; DRINKING (Physiology); EXERCISE; CARBOHYDRATE content of food; HOCKEY; ICE; INGESTION; PERSPIRATION; RISK assessment; SODIUM; URINALYSIS; SPORTS events; BODY mass index; TEAM sports
- Publication
International Journal of Sport Nutrition & Exercise Metabolism, 2019, Vol 29, Issue 6, p612
- ISSN
1526-484X
- Publication type
Article
- DOI
10.1123/ijsnem.2019-0029