Agreement of accelerometer and a physical activity questionnaire in adults with intellectual disabilities

Matthews, L. et al. (2011) Agreement of accelerometer and a physical activity questionnaire in adults with intellectual disabilities. Preventive Medicine, 52(5), pp. 361-364. (doi: 10.1016/j.ypmed.2011.02.001)

Abstract

Purpose. To assess the level of agreement between accelerometer and proxy-respondent questionnaire measurement of the physical activity levels of adults with intellectual disabilities. Methods. In Glasgow, UK, from May to September 2009, the main carer of participants with intellectual disabilities was asked to complete the International Physical Activity Questionnaire Short Version, detailing the participants' regular physical activity levels. Participants were also invited to wear an ActiGraph GT1M accelerometer for seven consecutive days, during all waking hours. The level of agreement from the two measurements was compared using the Bland-Altman method. Results. There is limited agreement between physical activity and sedentary behavior measured with accelerometer and proxy-respondent questionnaire. The 95% limits of agreement for both moderate activity and sedentary activity were -44.48 to 34.20 min per day and -8.41 to 6.79 h per day, respectively. As physical activity increased above 10 min per day, the agreement between the accelerometer and International Physical Activity Questionnaire-Short Version data decreased further. Conclusion. It remains uncertain whether questionnaire methods have sufficient reliability for use in surveillance of physical activity levels of adults with intellectual disabilities. (C) 2011 Elsevier Inc. All rights reserved

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Matthews, Dr Lynsay and Pert, Dr Carol and Murray, Mrs Heather and Hankey, Dr Catherine and Miller, Dr Susan and Penpraze, Ms Victoria and Spanos, Mr Dimitrios and Melville, Professor Craig and Macmillan, Miss Susan
• Authors: Matthews, L., Hankey, C., Penpraze, V., Boyle, S., Macmillan, S., Miller, S., Murray, H., Pert, C., Spanos, D., Robinson, N., and Melville, C. A.
• College/School: College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > Mental Health and Wellbeing; College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > Robertson Centre; College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > MRC/CSO SPHSU
• Journal Name: Preventive Medicine
• ISSN: 0091-7435