Impact of accelerometer wear time on physical activity data: a NHANES semisimulation data approach.

BACKGROUND Current research practice employs wide-ranging accelerometer wear time criteria to identify a valid day of physical activity (PA) measurement. OBJECTIVE To evaluate the effects of varying amounts of daily accelerometer wear time on PA data. METHODS A total of 1000 days of accelerometer data from 1000 participants (age=38.7 ± 14.3 years; body… CONTINUE READING

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