| Subclassifying chronic fatigue syndrome through exercise testing. | |
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MedLine Citation:
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PMID: 12783037 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: The purpose of this study was to examine physiological responses of persons with chronic fatigue syndrome (CFS) to a graded exercise test. METHODS: Cardiopulmonary exercise tests were performed on 189 patients diagnosed with CFS. Based on values for peak oxygen consumption, patients were assigned to one of four impairment categories (none, mild, moderate, and severe), using American Medical Association (AMA) guidelines. A one-way MANOVA was used to determine differences between impairment categories for the dependent variables of age, body mass index, percentage of predicted [OV0312]O(2), resting and peak heart rates, resting and peak systolic blood pressure, respiratory quotient (RQ), and rating of perceived exertion. RESULTS: Significant differences were found between each impairment level for percentage of predicted [OV0312]O(2) and peak heart rate. Peak systolic blood pressure values for the "moderate," and "severe" groups differed significantly from each other and both other groups. The more impaired groups had lower values. The no impairment group had a significantly higher peak RQ than each of the other impairment levels (all P < 0.001). Peak [OV0312]O(2) values were less than predicted for all groups. Compared with the males, the women achieved actual values for peak [OV0312]O(2) that were closer to their predicted values. CONCLUSION: Despite a common diagnosis, the functional capacity of CFS patients varies greatly. Stratifying patients by function allows for a more meaningful interpretation of the responses to exercise and may enable differential diagnosis between subsets of CFS patients. |
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Authors:
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J Mark Vanness; Christopher R Snell; David R Strayer; Line Dempsey; Staci R Stevens |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 35 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2003 Jun |
Date Detail:
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Created Date: 2003-06-03 Completed Date: 2003-09-04 Revised Date: 2006-11-15 |
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: 908-13 Citation Subset: IM; S |
Affiliation:
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University of the Pacific, Department of Sport Sciences, Stockton, CA 95211, USA. mvanness@uop.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Exercise Test* Fatigue Syndrome, Chronic / classification*, diagnosis, pathology* Female Humans Male Middle Aged Oxygen Consumption* Physical Fitness Reference Values Severity of Illness Index |
| Comments/Corrections | |
Comment In:
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Med Sci Sports Exerc. 2004 Jun;36(6):1087
[PMID:
15179183
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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