The links between increased participation in Physical Activity (PA) and improvements in
health are well established. As this body of evidence has grown, so too has the search for …

Context: Assessment of physical activity using self-report has the potential for measurement
error that can lead to incorrect inferences about physical activity behaviors and bias study …

Background The number of days of pedometer or accelerometer data needed to reliably
assess physical activity (PA) is important for research that examines the relationship with …

Context Ankle sprains are the most common orthopaedic pathologic condition, and more
concerning is the high percentage of persons who develop chronic ankle instability (CAI) …

ObjectiveThe purpose of the present study was to use a meta-analytic approach to examine
the convergent validity of the International Physical Activity Questionnaire (IPAQ) …

Analysis of 24-h waist-worn accelerometer data for physical activity and sedentary behavior
requires that sleep-period time (from sleep onset to the end of sleep, including all sleep …

To examine sources of variance in objectively measured physical activity and to determine
the number of monitoring days needed to quantify physical activity patterns reliably, 394 …

This study examined the number of days of global positioning system (GPS) monitoring
needed to measure attributes of an individual's routine activity space. Multiple alternative …

Background: There is little consensus on how many hours of accelerometer wear time is
needed to reflect a usual day. This study identifies the bias in daily physical activity (PA) …

Background Current research practice employs wide-ranging accelerometer wear time
criteria to identify a valid day of physical activity (PA) measurement. Objective To evaluate …