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Abstract: Peak Oxygen Uptake and Ventilatory Anaerobic Threshold in Fibromyalgia

  [ 29 votes ]   [ Discuss This Article ]
www.ProHealth.com • January 31, 2002





J Rheumatol 2002;29:353-7

VALÉRIA VALIM, LEDA M. OLIVEIRA, ALINA L. SUDA, LUCIANA E. SILVA, MÁRIO FARO, TURÍBIO L. BARROS NETO, DANIEL FELDMAN, and JAMIL NATOUR

ABSTRACT.

Objective. To compare maximum oxygen uptake and anaerobic threshold in patients with fibromyalgia (FM) and healthy sedentary controls matched by sex, age, weight, and body mass index.

Methods. Fifty women with FM aged 18-60 years and 50 healthy sedentary controls were studied. All were submitted to a maximum treadmill incremental test. Expired gas, ventilatory anaerobic threshold, and maximum oxygen uptake (VO2max) were evaluated. The influence of FM on quality of life was evaluated by questionnaires: the Fibromyalgia Impact Questionnaire and the Medical Outcomes Study Short-Form (SF-36).

Results. In patients with FM, the anaerobic threshold and peak oxygen uptake were significantly reduced. Maximum heartbeat rate was significantly lower in FM, indicating submaximum effort. Linear regression data showed a correlation between peak VO2 and the "Role-physical" domain of the SF-36. No such correlations were noted with anaerobic threshold.

Conclusion. These results confirm the hypothesis of lower physical fitness in patients with FM. Considering that patients with FM do not achieve a maximum effort, ventilatory anaerobic threshold should be considered as a better fitness index than VO2max.

Key Indexing Terms:

FIBROMYALGIA
FITNESS
MAXIMUM OXYGEN UPTAKE
ANAEROBIC THRESHOLD



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