| Intra-abdominal pressure and activation of abdominal muscles in highly trained participants during sudden heavy trunk loadings. | |
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MedLine Citation:
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PMID: 15507809 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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STUDY DESIGN: Ten participants were exposed to heavy sudden trunk loads as they might occur during patient handling. OBJECTIVES: The aim was to observe if well-trained men and women use their full rate of intra-abdominal pressure (IAP) development when exposed to heavy sudden trunk loads. Further, to elucidate to what degree the rectus abdominus muscle is activated when the IAP is developed. SUMMARY OF BACKGROUND DATA: Well-trained judo fighters are used to heavy sudden trunk loads and can produce a high IAP. It is unknown whether they use their full potential. IAP can increase the spinal stability and has been suggested to unload the spine. The unloading effect will, however, disappear if the development of the IAP demands substantial activity in the vertical fibers of the abdominal muscles. METHODS: Five male and five female well-trained judo and jujitsu fighters were exposed to heavy sudden trunk loadings through imitated patient handling situations where the patient fell and the fighters should hold the patient and prevent the fall. IAP was measured with a catheter in the stomach. Along with the IAP measurement, EMG was measured on the abdominal muscles, and the load on the low back was quantified by a three-dimensional dynamic biomechanical calculation of the torques at the L4-L5 joint. RESULTS: The well-trained judo fighters did not use their full potential of the IAP development when exposed to the heavy sudden trunk loads, but the women had to use a higher level of their IAP and extension torque capacity to comply with the heavy loads. The rectus abdominus muscle does not contribute to the IAP development when the trunk is exposed to a sudden heavy load. |
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Authors:
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Morten Essendrop; Bente Schibye |
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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: Spine Volume: 29 ISSN: 1528-1159 ISO Abbreviation: Spine Publication Date: 2004 Nov |
Date Detail:
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Created Date: 2004-10-27 Completed Date: 2005-11-23 Revised Date: 2009-07-09 |
Medline Journal Info:
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Nlm Unique ID: 7610646 Medline TA: Spine (Phila Pa 1976) Country: United States |
Other Details:
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Languages: eng Pagination: 2445-51 Citation Subset: IM |
Affiliation:
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National Institute of Occupational Health, Copenhagen, Denmark. me@ami.dk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Abdominal Muscles
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physiology* Accidental Falls Accidents, Occupational / prevention & control Adult Back Injuries / prevention & control Electromyography Female Health Occupations Humans Isometric Contraction Male Manometry Martial Arts Pressure* Rectus Abdominis / physiology Sex Characteristics Time Factors Torque Valsalva Maneuver / physiology Weight-Bearing / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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