| Palm cooling delays fatigue during high-intensity bench press exercise. | |
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MedLine Citation:
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PMID: 20139781 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Local cooling can induce an ergogenic effect during a short-term intense exercise. One proposed method of personal cooling involves heat extraction from the palm. PURPOSE: In this study, we hypothesized that local palm cooling (PC) during rest intervals between progressive weight training sets will increase total repetitions and exercise volume in resistance-trained subjects exercising in a thermoneutral (TN) environment. METHODS: Sixteen male subjects (mean +/- SD; age = 26 +/- 6 yr, height = 178 +/- 7 cm, body mass = 81.5 +/- 11.3 kg, one-repetition maximum (1RM) bench press = 123.5 +/- 12.6 kg, weight training experience = 10 +/- 6 yr) performed four sets of 85% 1RM bench press exercise to fatigue, with 3-min rest intervals. Exercise trials were performed in a counterbalanced order for 3 d, separated by at least 3 d: TN, palm heating (PH), and PC. Heating and cooling were applied by placing the hand in a device called the rapid thermal exchanger, set to 45 degrees C for heating or 10 degrees C for cooling. This device heats or cools the palm while negative pressure (-35 to -45 mm Hg) is applied around the hand. RESULTS: Total exercise volume during the four PC sets (2480 +/- 636 kg) was significantly higher than that during TN (1972 +/- 632 kg) and PH sets (2156 +/- 668 kg, P < 0.01). The RMS of the surface EMG with PC exercise was higher (P < 0.01), whereas esophageal temperature (P < 0.05) and RPE (P < 0.05) were lower during PC compared with TN and PH. CONCLUSIONS: PC from 35 degrees C to 20 degrees C temporarily overrides fatigue mechanism(s) during intense intermittent resistance exercise. The mechanisms for this ergogenic function remain unknown. |
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Authors:
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Young Sub Kwon; Robert A Robergs; Len R Kravitz; Burke A Gurney; Christine M Mermier; Suzanne M Schneider |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 42 ISSN: 1530-0315 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-07-20 Completed Date: 2010-11-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: United States |
Other Details:
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Languages: eng Pagination: 1557-65 Citation Subset: IM; S |
Affiliation:
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Department of Health, Exercise & Sports Sciences, University of New Mexico, Albuquerque, 87131-0001, USA. youngsubkwon@hotmail.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Body Temperature / physiology* Cold Temperature Esophagus / physiology Hand / physiology* Humans Immersion Male Muscle Fatigue / physiology* Muscle Strength / physiology Muscle, Skeletal / physiology Physical Endurance / physiology Resistance Training Weight Lifting Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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