Document Detail


Magnetic resonance imaging evaluation of cooling on blood flow and oedema in skeletal muscles after exercise.
MedLine Citation:
PMID:  15024665     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study assessed the effects of cooling on blood flow and intramuscular water content in human skeletal muscles after exercise using magnetic resonance imaging. In six male subjects, their legs were randomly assigned to be control or to be cooled. All subjects performed ankle dorsiflexion exercise inside an imaging magnet and after exercise, an ice bag was placed on the ankle dorsiflexors of the cooled leg. Flow-sensitive images, which reflect both perfusion and intramuscular water, were obtained before and up to 270 s post-exercise at 30-s intervals. The flow-sensitive alternating inversion recovery (FAIR) images, which extract only the perfusion change, were also obtained. Signal intensity (SI) in the ankle dorsiflexors was estimated before and after exercise in both flow-sensitive and FAIR images. On the flow-sensitive images, the control leg increased SI 30-270 s after exercise (P<0.05), but the cooled leg showed no significant change. On the FAIR images, the control leg increased SI 30-270 s post-exercise (P<0.05), while the cooled leg increased SI 30-150 s and 210 s after exercise (P<0.05). The findings suggest that cooling attenuates the perfusion elevation and prevents the oedema formation in skeletal muscle immediately after exercise.
Authors:
Osamu Yanagisawa; Hiroki Kudo; Nobuyuki Takahashi; Hiroshi Yoshioka
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial     Date:  2004-03-13
Journal Detail:
Title:  European journal of applied physiology     Volume:  91     ISSN:  1439-6319     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2004 May 
Date Detail:
Created Date:  2004-04-16     Completed Date:  2004-11-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  737-40     Citation Subset:  IM    
Affiliation:
Japan Institute of Sports Sciences, 3-15-1 Nishigaoka, Kita-ku, Tokyo, Japan. yanagisawa.osamu@jiss.naash.go.jp
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MeSH Terms
Descriptor/Qualifier:
Adult
Ankle Joint / physiopathology
Blood Flow Velocity
Cryotherapy / methods*
Edema / diagnosis,  physiopathology*,  prevention & control*
Exercise*
Humans
Hypothermia, Induced / methods
Magnetic Resonance Imaging / methods*
Male
Muscle Contraction
Muscle, Skeletal / blood supply,  physiopathology
Myositis / diagnosis*,  physiopathology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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