| Metabolic alkalosis, recovery and sprint performance. | |
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MedLine Citation:
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PMID: 20703975 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Pre-exercise alkalosis and an active recovery improve the physiological state of recovery through slightly different mechanisms (e. g. directly increasing extracellular bicarbonate (HCO3 (-)) vs. increasing blood flow), and combining the two conditions may provide even greater influence on blood acid-base recovery from high-intensity exercise. Nine subjects completed four trials (Placebo Active ( PLAC A), sodium bicarbonate (NaHCO3) Active ( BICARB A), Placebo Passive ( PLAC P) and NaHCO3 Passive ( BICARB P)), each consisting of three, 30-s maximal efforts with a three min recovery between each effort. Pre-exercisealkalosis was evident in both NaHCO3 conditions, as pH and HCO3 (-) were significantly higher than both Placebo conditions (pH: 7.46 ± 0.04 vs. 7.39 ± 0.02; HCO3 (-): 28.8 ± 1.9 vs. 23.2 ± 1.4 mmol·L (-1); p<0.001). In terms of performance, significant interactions were observed for average speed (p<0.05), with higher speeds evident in the BICARB A condition (3.9 ± 0.3 vs. 3.7 ± 0.4 m·s (-1)). Total distance covered was different (p=0.05), with post hoc differences evident between the BICARB A and PLAC P conditions (368 ± 33 vs. 364 ± 35 m). These data suggest that successive 30-s high intensity performance may be improved when coupled with NaHCO3 supplementation. |
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Authors:
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J C Siegler; L R McNaughton; A W Midgley; S Keatley; A Hillman |
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Publication Detail:
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Type: Journal Article Date: 2010-08-11 |
Journal Detail:
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Title: International journal of sports medicine Volume: 31 ISSN: 1439-3964 ISO Abbreviation: Int J Sports Med Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-11-08 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8008349 Medline TA: Int J Sports Med Country: Germany |
Other Details:
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Languages: eng Pagination: 797-802 Citation Subset: IM |
Affiliation:
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Sport, Health and Exercise Science, University of Hull, Department of Sport,Health and Exercise Science, United Kingdom. J.Siegler@hull.ac.uk |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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