Comparative Validity of Accelerometer-Based Measures of Physical Activity for People With Multiple Sclerosis

摘要: Abstract Coote S, O'Dwyer C. Comparative validity of accelerometer-based measures physical activity for people with multiple sclerosis. Objective To estimate the criterion devices as steps and energy expenditure in healthy controls sclerosis (MS) varying disability levels during everyday activities. Design Cross-sectional study. Setting University research room. Participants People MS who used at most a stick to walk outdoors (MS-A; n=19), bilateral support gait (MS-B; n=11), (n=15). Interventions completed 85 minutes 9 scripted Main Outcome Measures Estimates metabolic equivalent thresholds (METs) kilocalories from portable system, counted video Step MET estimates an integrative accelerometer uniaxial accelerometer, kilocalorie accelerometer. Results The had >30% error all groups. intraclass correlation coefficient (ICC) 20% error. ICC .50 .65 6% 15% Kilocalorie 2.9% controls, 8.16% MS-A, 2.56% MS-B ICCs were >.67, mean differences Conclusions agreement between both was poor, particularly MS. Only step control group not significantly different criterion. using proprietary algorithms device provide valid activities daily living range walking disabilities resulting