Impairment of thermoregulation and performance via mild dehydration in ice hockey goaltenders
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Impairment of thermoregulation and performance via mild dehydration in ice hockey goaltenders. / McCarthy, Devin G; Wickham, Kate Aiko; Vermeulen, Tyler F; Nyman, Danielle L; Ferth, Shane; Pereira, Jamie M; Larson, Dennis J; Burr, Jamie F; Spriet, Lawrence L.
In: International Journal of Sports Physiology and Performance, Vol. 15, No. 6, 2020, p. 833-840.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Impairment of thermoregulation and performance via mild dehydration in ice hockey goaltenders
AU - McCarthy, Devin G
AU - Wickham, Kate Aiko
AU - Vermeulen, Tyler F
AU - Nyman, Danielle L
AU - Ferth, Shane
AU - Pereira, Jamie M
AU - Larson, Dennis J
AU - Burr, Jamie F
AU - Spriet, Lawrence L
N1 - (Ekstern)
PY - 2020
Y1 - 2020
N2 - 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 <.04), as well as increasing save percentage in the final 10 minutes of scrimmage (NF = 75.8% [1.9%], WAT = 81.7% [2.3%], and CES = 81.3% [2.3%], post hoc: P <.04). In drills, movement speed (post hoc: P <.05) and reaction time (post hoc: P <.04) were slower in the NF versus both fluid conditions. Intake of either fluid similarly reduced postskate questionnaire scores (condition: P <.0001). Only CES significantly reduced rating of perceived exertion in drills (post hoc: P <.05) and increased peak movement power versus NF (post hoc: 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.
AB - 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 <.04), as well as increasing save percentage in the final 10 minutes of scrimmage (NF = 75.8% [1.9%], WAT = 81.7% [2.3%], and CES = 81.3% [2.3%], post hoc: P <.04). In drills, movement speed (post hoc: P <.05) and reaction time (post hoc: P <.04) were slower in the NF versus both fluid conditions. Intake of either fluid similarly reduced postskate questionnaire scores (condition: P <.0001). Only CES significantly reduced rating of perceived exertion in drills (post hoc: P <.05) and increased peak movement power versus NF (post hoc: 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.
KW - Carbohydrate
KW - Fatigue
KW - Hydration
KW - Physiology
KW - Sport
U2 - 10.1123/ijspp.2019-0464
DO - 10.1123/ijspp.2019-0464
M3 - Journal article
C2 - 32101792
AN - SCOPUS:85090056002
VL - 15
SP - 833
EP - 840
JO - International Journal of Sports Physiology and Performance
JF - International Journal of Sports Physiology and Performance
SN - 1555-0265
IS - 6
ER -
ID: 254661094