USING WEARABLE ACTIVITY TRACKERS TO DETECT DIFFERENCES IN FREE-LIVING, VOLITIONAL ACTIVITY. (11th November 2018)

• Record Type: Journal Article
• Authors: Hale, T M; Guardigni, V; Vegreville, M; Brawley, B; Woodbury, E; Storer, T; Sax, P E; Montano, M
• Is Part Of: Innovation in aging. Volume 2(2018)Supplement 1
• Page Start: 41
• Page End: 42
• Publication Date: 2018-11-11
• Subjects: Aging -- Periodicals; Gerontology -- Periodicals; 612.67
• DOI: 10.1093/geroni/igy023.153
• Languages: English
• ISSNs: 2399-5300

Abstract

Abstract: Slower gait speed is a well-established indicator for increased risk of morbidity and mortality. However, gold standard measurement methods like the six-minute walk test (6MWT), are difficult to use in a clinical setting and may not capture important differences in free-living, volitional activity. We enrolled 46 men (23 HIV+, 23 HIV-) from a prospective observational study (MATCH) of men and women, 50–65 years old. Participants wore an activity tracker (i.e., Nokia Pulse Ox) for three weeks. Tracker data was used to create average gait speed and a measure of percent time at quartiles of maximum observed gait speed. Lab-based, 6MWT gait speed did not differ significantly by HIV status. Free-living, tracker assessed gait speed was significantly slower among HIV+ compared to uninfected participants. HIV+ participants also spent more time at lower activity levels. Free-living gait speed may provide an important digital biomarker of risks not detected by traditional lab-based measures.