| Massage impairs postexercise muscle blood flow and "lactic acid" removal. | |
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MedLine Citation:
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PMID: 19997015 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: This study tested the hypothesis that one of the ways sports massage aids muscle recovery from exercise is by increasing muscle blood flow to improve "lactic acid" removal. METHODS: Twelve subjects performed 2 min of strenuous isometric handgrip (IHG) exercise at 40% maximum voluntary contraction to elevate forearm muscle lactic acid. Forearm blood flow (FBF; Doppler and Echo ultrasound of the brachial artery) and deep venous forearm blood lactate and H+ concentration ([La-], [H+]) were measured every minute for 10 min post-IHG under three conditions: passive (passive rest), active (rhythmic exercise at 10% maximum voluntary contraction), and massage (effleurage and pétrissage). Arterialized [La-] and [H+] from a superficial heated hand vein was measured at baseline. RESULTS: Data are presented as mean +/- SE. Venoarterial [La-] difference ([La-]v-a) at 30 s of post-IHG was the same across conditions (passive = 6.1 +/- 0.6 mmol x L(-1), active = 5.7 +/- 0.6 mmol x L(-1), massage = 5.5 +/- 0.6 mmol x L(-1), NS), whereas FBF was greater in passive (766 +/- 101 mL x min(-1)) versus active (614 +/- 62 mL x min(-1), P = 0.003) versus massage (540 +/- 60 mL x min(-1), P < 0.0001). Total FBF area under the curve (AUC) for 10 min after handgrip was significantly higher in passive versus massage (4203 +/- 531 vs 3178 +/- 304 mL, P = 0.024) but not versus active (3584 +/- 284 mL, P = 0.217). La(-)- efflux (FBF x [La-]v-a) AUC mirrored FBF AUC (passive = 20.5 +/- 2.8 mmol vs massage = 14.7 +/- 1.6 mmol, P = 0.03, vs active = 15.4 +/- 1.9 mmol, P = 0.064). H+ efflux (FBF x [H+]v-a) was greater in passive versus massage at 30 s (2.2 +/- 0.4e(-5) vs 1.3 +/- 0.2e(-5) mmol, P < 0.001) and 1.5 min (1.0 +/- 0.2e(-5) vs 0.6 +/- 0.09e(-5) mmol, P = 0.003) after IHG. CONCLUSIONS: Massage impairs La(-) and H+ removal from muscle after strenuous exercise by mechanically impeding blood flow. |
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Authors:
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E Victoria Wiltshire; Veronica Poitras; Melissa Pak; Terence Hong; Jay Rayner; Michael E Tschakovsky |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
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 Jun |
Date Detail:
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Created Date: 2010-05-20 Completed Date: 2010-09-10 Revised Date: 2011-04-28 |
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: 1062-71 Citation Subset: IM; S |
Affiliation:
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School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Blood Flow Velocity / physiology Brachial Artery / physiology Exercise / physiology* Forearm / blood supply* Humans Hydrogen-Ion Concentration Lactic Acid / blood*, metabolism Male Massage / adverse effects* Muscle, Skeletal / blood supply*, metabolism Regional Blood Flow Young Adult |
| Chemical | |
Reg. No./Substance:
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50-21-5/Lactic Acid |
| Comments/Corrections | |
Comment In:
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Med Sci Sports Exerc. 2011 Apr;43(4):738; author reply 739
[PMID:
21412113
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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