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USING WEARABLE ACTIVITY TRACKERS TO DETECT DIFFERENCES IN FREE-LIVING, VOLITIONAL ACTIVITY

2018; University of Oxford; Volume: 2; Issue: suppl_1 Linguagem: Inglês

10.1093/geroni/igy023.153

2399-5300

Timothy M. Hale, Viola Guardigni, Matthieu Vegreville, Brooke Brawley, Erin Woodbury, Tom Storer, P E Sax, Monty Montano,

Terrorism, Counterterrorism, and Political Violence

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.