| Effects of β-hydroxy-β-methylbutyrate free acid and cold water immersion on post-exercise markers of muscle damage. | |
MedLine Citation:
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PMID: 24639242 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The aim of the current study was to examine the effects of cold water immersion (CWI) with and without the free acid form of β-hydroxy-β-methylbutyrate (HMB-FA) on markers of muscle damage following acute lower body resistance exercise. Forty recreationally resistance-trained men (22.3 ± 2.4 years) were randomly divided into one of the four groups: (1) Placebo (PL); (2) HMB-FA; (3) HMB-FA-CWI; (4) PL-CWI. HMB-FA groups ingested 3 g day(-1) and CWI groups submersed their lower body into 10-12 °C water for 10-min post-exercise. No differences between groups were observed for CK; however, PL-CWI had significantly greater elevations in myoglobin 30-min post-exercise compared to HMB-FA (p = 0.009) and PL (p = 0.005), and HMB-FA-CWI was significantly greater than HMB-FA (p = 0.046) and PL (p = 0.028). No differences between groups were observed for IL-6 and IL-10, although CRP was significantly greater 24-h post-exercise for PL-CWI compared to HMB-FA-CWI (p = 0.02) and HMB-FA (p = 0.046). Only HMB-FA-CWI showed significantly (p = 0.02) greater improvements in average power per repetition. CWI appeared to elevate myoglobin compared to other groups, while HMB-FA may have attenuated the increase in CRP when combined with CWI. Nevertheless, HMB-FA or CWI treatments did not appear to provide benefit over PL for recovery. Instead, the combination of CWI and HMB-FA improved performance recovery compared to other groups. |
Authors:
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Adam M Gonzalez; Jeffrey R Stout; Adam R Jajtner; Jeremy R Townsend; Adam J Wells; Kyle S Beyer; Carleigh H Boone; Gabriel J Pruna; Gerald T Mangine; Tyler M Scanlon; Jonathan D Bohner; Leonardo P Oliveira; Maren S Fragala; Jay R Hoffman |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2014-3-18 |
Journal Detail:
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Title: Amino acids Volume: - ISSN: 1438-2199 ISO Abbreviation: Amino Acids Publication Date: 2014 Mar |
Date Detail:
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Created Date: 2014-3-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9200312 Medline TA: Amino Acids Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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