Impairment of Thermoregulation and Performance via Mild Dehydration in Ice Hockey Goaltenders
| Autor: | Kate A. Wickham, Shane Ferth, Devin G. McCarthy, Jamie M. Pereira, Dennis J. Larson, Lawrence L. Spriet, Jamie F. Burr, Tyler F. Vermeulen, Danielle L. E. Nyman |
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| Rok vydání: | 2020 |
| Předmět: |
Male
Post hoc Physical Exertion Sweating 030209 endocrinology & metabolism Physical Therapy Sports Therapy and Rehabilitation Athletic Performance Core temperature Body Mass Index 03 medical and health sciences Ice hockey 0302 clinical medicine Heart Rate Mild dehydration Heart rate Humans Medicine Orthopedics and Sports Medicine Rating of perceived exertion Cross-Over Studies Dehydration business.industry 030229 sport sciences Thermoregulation Crossover study Hockey Motor Skills Anesthesia Muscle Fatigue Perception business Body Temperature Regulation |
| Zdroj: | International Journal of Sports Physiology and Performance. 15:833-840 |
| ISSN: | 1555-0273 1555-0265 |
| Popis: | During play, ice hockey goaltenders routinely dehydrate through sweating and lose ≥2% body mass, which may impair thermoregulation and performance. Purpose: This randomized, crossover study examined the effects of mild dehydration on goaltender on-ice thermoregulation, heart rate, fatigue, and performance. Methods: Eleven goaltenders played a 70-minute scrimmage followed by a shootout and drills to analyze reaction time and movements. On ice, they either consumed no fluid (NF) and lost 2.4% (0.3%) body mass or maintained body mass with water (WAT) or a carbohydrate–electrolyte solution (CES). Save percentage, rating of perceived exertion, heart rate, and core temperature were recorded throughout, and a postskate questionnaire assessed perceived fatigue. Results: Relative to NF, intake of both fluids decreased heart rate (interaction: P = .03), core temperature (peak NF = 39.0°C [0.1°C], WAT = 38.6°C [0.1°C], and CES = 38.5°C [0.1°C]; P = .005), and rating of perceived exertion in the scrimmage (post hoc: P P P P P P P = .02). Shootout save percentage was similar between conditions (P = .37). Conclusions: Mild dehydration increased physiological strain and fatigue and decreased ice hockey goaltender performance versus maintaining hydration. Also, maintaining hydration with a CES versus WAT may further reduce perceived fatigue and positively affect movements. |
| Databáze: | OpenAIRE |
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