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The objective of the study was to quantify the voluntary dynamic muscular endurance (DME) in patients with primary fibromyalgia (PF) since easy fatigability of muscles is one of the major symptoms in this syndrome. Consecutive outpatients referred to a rheumatology clinic specializing in PF were investigated. Thirty-six patients with PF were compared with 18 patients with chronic myofascial pain (CMP) syndrome. Subjects were matched according to gender, age, height, weight, peak torque, and contractional work. The DME was defined as the number of repeated knee extensions necessary for the contractional work in two successive knee extensions to be equal to or below 70% of the initial value measured with an isokinetic dynamometer. A significantly lower DME was found in the PF group than in the CMP group: 11 (7-13) and 18 (11-25), respectively (median and quartiles), p less than .005. Patients with PF have a low voluntary muscular endurance compared to CMP patients.

Type

Journal article

Journal

Arch Phys Med Rehabil

Publication Date

02/1992

Volume

73

Pages

170 - 173

Keywords

Activities of Daily Living, Adult, Female, Fibromyalgia, Humans, Male, Middle Aged, Muscle Contraction, Myofascial Pain Syndromes, Physical Endurance, Surveys and Questionnaires