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 .
Can exercise limits prevent post-exertional malaise in chronic fatigue syndrome? An uncontrolled clinical trial
Objective : It was hypothesized that the use of exercise limits prevents symptom increases and worsening of their health status following a walking exercise in people with chronic fatigue syndrome . Design : An uncontrolled clinical trial ( semi-experimental design ) . Setting : Outpatient clinic of a university department . Subjects : Twenty-four patients with chronic fatigue syndrome . Interventions : Subjects undertook a walking test with the two concurrent exercise limits . Each subject walked at an intensity where the maximum heart rate was determined by heart rate corresponding to the respiratory exchange ratio = 1.0 derived from a previous submaximal exercise test and for a duration calculated from how long each patient felt they were able to walk . Main outcome measures : The Short Form 36 Health Survey or SF-36 , the Chronic Fatigue Syndrome Symptom List , and the Chronic Fatigue Syndrome — Activities and Participation Question naire were filled in prior to , immediately after and 24 hours after exercise . Results : The fatigue increase observed immediately post-exercise ( P= 0.006 ) returned to pre-exercise levels 24 hours post-exercise . The increase in pain observed immediately post-exercise was retained at 24 hours post-exercise ( P=0.03 ) . Fourteen of the 24 subjects experienced a clinical ly meaningful change in bodily pain ( change of SF-36 bodily pain score ≥10 ) ; 6 indicated that the exercise bout had slightly worsened their health status , and 2 had a clinical ly meaningful decrease in vitality ( change of SF-36 vitality score ≥20 ) . There was no change in activity limitations /participation restrictions . Conclusion : It was shown that the use of exercise limits ( limiting both the intensity and duration of exercise ) prevents important health status changes following a walking exercise in people with chronic fatigue syndrome , but was unable to prevent short-term symptom increases
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 .