Document Detail


Effects of a new evaporative cooling solution during rowing in a warm environment.
MedLine Citation:
PMID:  20861530     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To evaluate the effect of Energicer on performance during indoor rowing in a warm environment.
METHODS: Eighteen highly trained rowers (age 23.3 ± 6.7 y, height 181.3 ± 6.0 cm, mass 76.7 ± 5.0 kg, peak aerobic power (PAP) 322.1 ± 24.3 W; mean ± SD) performed two indoor rowing trials at 25.0 degrees Celsius and 65.0% relative humidity. Each trial consisted of 10 min at 55% PAP, 5 min of rest, 10 min at 70% PAP, 10 min of rest, and 2000 m time trial. Subjects were randomly assigned to an experimental (COOL) or a placebo (PLA) condition, using a double-blind, crossover design. During COOL, subjects wore sweatbands soaked in Energicer on both forearms; during PLA, they wore identical sweatbands soaked in cool water. Physiological measures and rowing performance were analyzed in a post-test-only crossover design. Magnitude of the difference between treatments was interpreted using the Cohen's effect statistic.
RESULTS: No substantial differences were observed in heart rate, blood lactate and RPE between treatments during the submaximal row (COOL 163 ± 10 bpm, 4.3 ± 1.0 mM, 14.5 ± 1.8; PLA 165 ± 11 bpm, 4.8 ± 1.4 mM, 14.6 ± 1.6) and the time trial (COOL 179 ± 9 bpm, 10.7 ± 2.3 mM, 20 ± 0; PLA 179 ± 10 bpm, 11.1 ± 2.2 mM, 20 ± 0). Time (419 ± 11 vs 420 ± 12 s), mean power (305 ± 24 vs 304 ± 26 W), sweat loss (1013 ± 186 vs 981 ± 161 mL) and pacing strategy during the time trial were similar in COOL and PLA. The magnitude of differences between treatments was trivial for all measured variables.
CONCLUSION: Energicer failed to provide a substantial benefit during indoor rowing in a warm environment. Whether Energicer is beneficial during more prolonged exercise and/or under more stressful environmental conditions remains to be elucidated.
Authors:
Inigo Mujika; Rafa González De Txabarri; David Pyne
Publication Detail:
Type:  Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  International journal of sports physiology and performance     Volume:  5     ISSN:  1555-0265     ISO Abbreviation:  Int J Sports Physiol Perform     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-23     Completed Date:  2010-12-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101276430     Medline TA:  Int J Sports Physiol Perform     Country:  United States    
Other Details:
Languages:  eng     Pagination:  412-6     Citation Subset:  IM    
Affiliation:
USP Araba Sport Clinic, Vitoria-Gasteiz, Basque Country.
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MeSH Terms
Descriptor/Qualifier:
Alcohols
Body Temperature / physiology*
Body Temperature Regulation / physiology*
Cross-Over Studies
Double-Blind Method
Exercise / physiology*
Exercise Test
Heat Stress Disorders / etiology,  physiopathology*,  prevention & control*
Humans
Humidity
Male
Methanol
Solutions
Sweating / physiology
Young Adult
Chemical
Reg. No./Substance:
0/Alcohols; 0/Solutions; 67-56-1/Methanol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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