| Knee laxity does not vary with the menstrual cycle, before or after exercise. | |
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MedLine Citation:
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PMID: 15262636 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: An intriguing explanation for the disproportionately high rate of anterior cruciate ligament injury in female athletes is that the structural properties of the anterior cruciate ligament are affected by the menstrual hormones. Whether this actually occurs, however, is the subject of ongoing debate. HYPOTHESES: (1) Anterior cruciate ligament laxity is different in the follicular, ovulatory, and luteal phases of the menstrual cycle, and (2) exercise exacerbates the difference in anterior cruciate ligament laxity in the 3 phases. METHODS: Over the course of 10 weeks, repeated knee laxity measurements were taken on 27 high-level female athletes, before and after exercise. Point in the menstrual cycle was determined with charts of waking temperature and menstruation. The independent effects of menstrual phase and exercise were evaluated using generalized estimating equations. RESULTS: Data from 18 participants were included in the final analysis. There were no significant differences in anterior cruciate ligament laxity in any of the 3 menstrual phases, before or after exercise. CONCLUSIONS: Anterior cruciate ligament laxity is not significantly different during the follicular, ovulatory, and luteal phases of the menstrual cycle, and bicycling exercise does not exacerbate or create any differences in anterior cruciate ligament laxity. |
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Authors:
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Michael J Belanger; Douglas C Moore; Joseph J Crisco; Paul D Fadale; Michael J Hulstyn; Michael G Ehrlich |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2004-05-18 |
Journal Detail:
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Title: The American journal of sports medicine Volume: 32 ISSN: 0363-5465 ISO Abbreviation: Am J Sports Med Publication Date: 2004 Jul-Aug |
Date Detail:
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Created Date: 2004-07-20 Completed Date: 2005-01-18 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7609541 Medline TA: Am J Sports Med Country: United States |
Other Details:
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Languages: eng Pagination: 1150-7 Citation Subset: IM |
Copyright Information:
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Copyright 2004 American Orthopaedic Society for Sports Medicine |
Affiliation:
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Department of Orthopaedics, Harvard Medical School/Memorial Hospital of Rhode Island, Pawtucket, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Anterior Cruciate Ligament / physiology Exercise / physiology* Exercise Test Female Humans Joint Instability / physiopathology* Knee Joint / physiology* Menstrual Cycle / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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