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Estimated Sweat Loss, Fluid and Carbohydrate Intake, and Sodium Balance of Male Major Junior, AHL, and NHL Players During On-Ice Practices
Abstract
Several previous studies have reported performance decrements in team sport athletes who 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-exercise BM 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 the majority 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.
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“extremely high sweat rates and sodium losses have been reported for some sports such as ice hockey (~1.8 L·h−1) even though the training session was conducted in a cool environment (Palmer and Spriet, 2008, Gamble et al., 2019)”
From Key Nutritional Considerations for Youth Winter Sports Athletes to Optimize Growth, Maturation and Sporting Development (2021) · cites this paper as Gamble et al., 2019
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Cited by
Hannon, M. P., Flueck, J. L., Gremeaux, V., Place, N., Kayser, B., & Donnelly, C. (2021) · Frontiers in Sports and Active Living · doi:10.3389/fspor.2021.599118 · Cited by 23
Mild dehydration impaired intermittent sprint performance and thermoregulation in females
Driscoll, R. L., McCarthy, D. G., Palmer, M. S., & Spriet, L. L. (2020) · Applied Physiology, Nutrition, and Metabolism · doi:10.1139/apnm-2020-0040 · Cited by 14
Self-citation
Metadata
- Authors
- Gamble, A. S. D., Bigg, J. L., Vermeulen, T. F., Boville, S. M., Eskedjian, G. S., Jannas-Vela, S., Whitfield, J., Palmer, M. S., & Spriet, L. L.
- Affiliations
- University of Guelph
- Universidad Finis Terrae
- Australian Catholic University
- St. Francis Xavier University
- Venue
- International Journal of Sport Nutrition and Exercise Metabolism
- Publisher
- Human Kinetics
- Published
- 2019-11-01
- Volume
- 29
- Issue
- 6
- Pages
- 612-619
- ISSN
- 1526-484X
- 1543-2742
- Cited by
- 9
- References
- 4
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