title: Isokinetic muscle performance of the hip and ankle muscles in women with fibromyalgia.
abstract: OBJECTIVE
  To compare isokinetic muscle performances of a proximal (hip) and a distal (ankle) muscle of fibromyalgia syndrome (FMS) patients with those of age- and body mass index (BMI)-matched healthy subjects.
  
  
  METHODS
  Thirty female patients with FMS (mean age: 41.5 ± 6.7 years [range, 27-54]) and 30 age- (mean age: 40.6 ± 6.0 years [range, 27-54]) and BMI-matched female healthy controls were consecutively enrolled. Demographic and clinical characteristics of the subjects were recorded. Isokinetic measurements of hip and ankle flexion and extension at angular velocities of 60°/s and 180°/s, peak torques, flexor-extensor torque ratios, muscle fatigue resistance values and average power were obtained.
  
  
  RESULTS
  Mean disease duration of FMS patients was 2.4 ± 1.9 years. Mean weight, height and BMI values were 70.4 ± 12.5 kg, 159.5 ± 6.0 cm and 27.7 ± 4.7 kg/m² (FMS patients) and 69.3 ± 10.1 kg, 161.7 ± 6.2 cm and 26.6 ± 4.3 kg/m² (control subjects), respectively (all P > 0.05). All isokinetic values were statistically decreased in the FMS group when compared with the control group, except for the peak torques at angular velocity of 180°/s on flexion of the hip and extension of the ankle and the total work and average power on extension of the ankle. We did not find any correlation between isokinetic values and disease related parameters of FMS patients.
  
  
  CONCLUSIONS
  In the light of our results, we may conclude that muscle strength and muscle fatigue seem to decrease in FMS patients' both proximal and distal lower extremity muscles.
authors.affiliation: Ankara Physical Medicine and Rehabilitation Training and Research Hospital, Ankara, Turkey.
authors.forename: Alparslan
authors.initials: A
authors.lastname: Yetişgin
authors.affiliation: Ankara Physical Medicine and Rehabilitation Training and Research Hospital, Ankara, Turkey.
authors.forename: Tülay
authors.initials: T
authors.lastname: Tiftik
authors.affiliation: Ankara Physical Medicine and Rehabilitation Training and Research Hospital, Ankara, Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Kara
authors.affiliation: Ankara Physical Medicine and Rehabilitation Training and Research Hospital, Ankara, Turkey.
authors.forename: İlkay
authors.initials: İ
authors.lastname: Karabay
authors.affiliation: Ankara Physical Medicine and Rehabilitation Training and Research Hospital, Ankara, Turkey.
authors.forename: Selami
authors.initials: S
authors.lastname: Akkuş
authors.affiliation: Ankara Physical Medicine and Rehabilitation Training and Research Hospital, Ankara, Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Ersöz
mesh_terms: D000328:Adult; D000842:Ankle; D001696:Biomechanical Phenomena; D015992:Body Mass Index; D016022:Case-Control Studies; D005260:Female; D005356:Fibromyalgia / Q000175:diagnosis / Q000503:physiopathology*; D006615:Hip; D006801:Humans; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction; D018763:Muscle Fatigue; D053580:Muscle Strength; D018482:Muscle, Skeletal / Q000503:physiopathology*; D019415:Torque
keywords: ankle; fibromyalgia syndrome; hip; isokinetic strength