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Influence of Postexercise Cooling on Muscle Oxygenation and Blood Volume Changes.
MedLine Citation:
PMID:  23247707     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
PURPOSE: To investigate the effects of post exercise cold water immersion (CWI) on tissue oxygenation and blood volume changes following intense exercise. METHODS: Nine physically active males performed 30 min of continuous running (CR) at 70% of their maximal treadmill velocity (Vmax), followed by 10 bouts of intermittent running (INT) at Vmax. Following exercise, one of the participants' leg was immersed in a cold water bath (10°C; CWI) to the level of their gluteal fold for 15 min. The contra-lateral leg remained outside the water bath and served as a control (CON). Vastus lateralis (VL) skin temperature (TskVL), VL oxygenation (tissue oxygenation index, TOI) and blood volume changes (total hemoglobin volume, tHb) were monitored continuously throughout exercise and CWI using near infrared spectroscopy. RESULTS: TskVL, TOI and tHb were not significantly different between CON and CWI during CR and INT respectively (p>0.05). In contrast, TskVL was significantly lower in CWI compared to CON throughout immersion with peak differences occurring at the end of immersion (CON: 35.1 ± 0.6 vs CWI: 16.9 ± 1.7°C, p<0.001). tHb was significantly lower during CWI compared with CON at most time points, with peak differences of 20 ± 4% evident at the end of the 15 min immersion (p<0.01). Likewise, TOI was significantly higher in CWI, compared with CON, with peak differences of 2.5 ± 1% evident at the 12 min of immersion (p<0.05). CONCLUSIONS: Post exercise cooling decreased microvascular perfusion and muscle metabolic activity. These findings are consistent with the suggested mechanisms by which CWI is hypothesized to improve local muscle recovery.
Authors:
Mohammed Ihsan; Greig Watson; Marcin Lipski; Chris R Abbiss
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-14
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  -     ISSN:  1530-0315     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1School of Exercise and Health Sciences, Edith Cowan University, Joondalup, WA, Australia 2Institute for Exercise Science and Sports Informatics, German Sports University, Cologne, Germany 3School of Human Life Sciences, University Of Tasmania, Launceston, Australia.
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