title: Analyzing free-living physical activity of older adults in different environments using body-worn activity monitors.
abstract: This study measured objectively the postural physical activity of 4 groups of older adults (> or =65 yr). The participants (N = 70) comprised 3 patient groups--2 from rehabilitation wards (city n = 20, 81.8 +/- 6.7 yr; rural n = 10, 79.4 +/- 4.7 yr) and the third from a city day hospital (n = 20, 74.7 +/- 7.9 yr)--and a healthy group to provide context (n = 20, 73.7 +/- 5.5 yr). The participants wore an activity monitor (activPAL) for a week. A restricted maximum-likelihood-estimation analysis of hourly upright time (standing and walking) revealed significant differences between day, hour, and location and the interaction between location and hour (p < .001). Differences in the manner in which groups accumulated upright and sedentary time (sitting and lying) were found, with the ward-based groups sedentary for prolonged periods and upright for short episodes. This information may be used by clinicians to design appropriate rehabilitation interventions and monitor patient progress.
authors.affiliation: School of Health and Social Care, Glasgow Caledonian University, Glasgow, UK.
authors.forename: P Margaret
authors.initials: PM
authors.lastname: Grant
authors.forename: Malcolm H
authors.initials: MH
authors.lastname: Granat
authors.forename: Morag K
authors.initials: MK
authors.lastname: Thow
authors.forename: William M
authors.initials: WM
authors.lastname: Maclaren
mesh_terms: D056044:Actigraphy / Q000295:instrumentation*; D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D002940:Circadian Rhythm; D003430:Cross-Sectional Studies; D005260:Female; D006757:Hospital Units; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D026741:Physical Therapy Modalities / Q000295:instrumentation*; D011187:Posture / Q000502:physiology*; D012047:Rehabilitation Centers; D012111:Residence Characteristics; D057185:Sedentary Behavior