Limited evidence was found for the psychometric properties and clinical usability of these instruments .
However , the CFS-activities and participation question naire ( APQ ) is a disease-specific instrument with moderate content and construct validity .
PURPOSE To summarize measurement instruments used to evaluate activity limitations and participation restrictions in patients with chronic fatigue syndrome ( CFS ) and review the psychometric properties of these instruments .
Chronic fatigue syndrome causes activity limitations and participation restrictions in one or more areas of life .
How relevant are exercise capacity measures for evaluating treatment effects in chronic fatigue syndrome? Results from a prospective, multidisciplinary outcome study
Objective : To evaluate the outcome of a multidisciplinary treatment programme for patients with chronic fatigue syndrome , including health-related quality of life ( HRQoL ) and psychosocial variables , and exercise capacity measures . Design : A six-month prospect i ve outcome study . Setting : University outpatient rehabilitation clinic ; group setting . Subjects : One hundred and sixteen women fulfilling chronic fatigue syndrome criteria . Interventions : Cognitive behaviourally and grade d exercise-based strategies ; emphasis on adaptive lifestyle changes . Measures : Short Form General Health Survey ( SF-36 ) ; Symptom Checklist ( SCL-90 ) ; Causal Attribution List ( CAL ) ; Self-Efficacy Scale ( SE ) ; maximum progressive bicycle ergometer test with respiratory gas analysis ; and isokinetic leg strength test  , before and after treatment . Results : The total group significantly improved on nearly all reported HRQoL/ psychosocial variables . Changes in exercise capacity measures were rather modest and did not correlate or only weakly correlated with HRQoL/psychosocial variables . Subgroup analyses indicated that less fit patients improved significantly more on exercise capacity measures than their more fit counterparts . Patients who were fitter at baseline scored better on pretreatment HRQoL/psychosocial variables , but both subgroups improved similarly on these variables . Conclusions : Health-related quality of life and psychosocial functioning in patients with chronic fatigue syndrome improves after a six-month cognitive behaviourally and grade d exercise-based multidisciplinary treatment programme . Increase in exercise capacity measures is not a necessary condition for reported improvements , except for less fit patients
Limited evidence was found for the psychometric properties and clinical usability of these instruments .
However , the CFS-activities and participation question naire ( APQ ) is a disease-specific instrument with moderate content and construct validity .
PURPOSE To summarize measurement instruments used to evaluate activity limitations and participation restrictions in patients with chronic fatigue syndrome ( CFS ) and review the psychometric properties of these instruments .
Chronic fatigue syndrome causes activity limitations and participation restrictions in one or more areas of life .