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Influence of diuretic-induced dehydration on competitive sprint and power performance

Citation

Watson, G and Judelson, DA and Armstrong, LE and Yeargin, SW and Casa, DJ and Maresh, CM, Influence of diuretic-induced dehydration on competitive sprint and power performance, Medicine and Science in Sports and Exercise, 37, (7) pp. 1168-1174. ISSN 0195-9131 (2005) [Refereed Article]


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Copyright Statement

Copyright 2005 American College of Sports Medicine

DOI: doi:10.1249/01.mss.0000170100.93279.be

Abstract

Purpose: To examine sprint and power performance after diuretic-induced dehydration.

Methods: After six sprint practice sessions, nine male former sprinters (mean SD; age, 21 2 yr; body mass (BM), 80.0 5.2 kg; height, 1.78 0.08 m; body fat, 14 4%) participated in a 50-m race, a 200-m race, a 400-m race, and a vertical jump on an indoor synthetic track, once when dehydrated (40-mg furosemide; DD) and once with no diuretic (CON) using a counter-balanced crossover design. Plasma volume change (%ΔPV), heart rate (HR), blood pressure, rectal temperature, serum electrolytes, plasma lactate, plasma glucose, rating of perceived exertion, thirst, and thermal sensations were measured before and after each race.

Results: Sprint times (DD vs CON) for the 50 m (6.72 0.28 vs 6.73 0.29 s), 200 m (25.95 1.20 vs 26.21 1.42 s), and 400 m (59.01 4.26 vs 58.68 3.68 s) were similar for both conditions, as was vertical jump height (0.67 0.10 vs 0.66 0.11 m). This occurred despite losing 2.2 0.4% BM and 7.3 6.7%ΔPV (50/200 m) or 2.5 0.4% BM and 7.1 2.7% %ΔPV (VJ/400 m) in response to DD.

Conclusions: Diuretic-induced dehydration was not detrimental to sprint and power performance. Metabolic, thermoregulatory, and cardiovascular variables were not significantly altered by DD. Furthermore, the theoretical benefit of dehydration on performance (i.e., BM reduction) was not supported in this subject cohort.

Item Details

Item Type:Refereed Article
Keywords:running, metabolism, cardiovascular, thermoregulation, vertical, jump
Research Division:Medical and Health Sciences
Research Group:Human Movement and Sports Science
Research Field:Exercise Physiology
Objective Division:Health
Objective Group:Health and Support Services
Objective Field:Health and Support Services not elsewhere classified
Author:Watson, G (Dr Greig Watson)
ID Code:78858
Year Published:2005
Web of Science® Times Cited:35
Deposited By:Health Sciences A
Deposited On:2012-07-30
Last Modified:2013-03-14
Downloads:14 View Download Statistics

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