Comparison of Two Generations of ActiGraph Accelerometers: The CARDIA Study

AbstractPurposeTo examine the comparability of the ActiGraph 7164 and wGT3X-BT wear time, count-based estimates, and average time/day in physical activity of different intensities.MethodsWe studied 87 Coronary Artery Risk Development in Young Adults (CARDIA) participants, aged 48-60 years, who simultaneously wore the 7164 and wGT3X-BT accelerometers at the waist in 2015-16, with wear time ≥4 of 7 days, ≥10 hours/day for both monitors. Freedson cutpoints (counts/min) were used to define sedentary (

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