The activPAL TM Accurately Classifies Activity Intensity Categories in Healthy Adults.

The activPALTM (AP) monitor is well established for distinguishing sitting, standing and stepping time. However, its validity in predicting time in physical activity intensity categories in a free-living environment has not been determined. Purpose: To determine the validity of the AP in estimating time spent in sedentary, light and moderate-to-vigorous physical activity (MVPA) in a free-living environment. Methods: Thirteen participants (mean (SD) age 24.8 y (5.2), BMI 23.8 kg.m2 (1.9)) were directly observed (DO) for three 10-hr periods wearing an AP. A custom R program was developed and used to summarize detailed active and sedentary behavior variables from the AP. AP estimates were compared to DO. Results: The AP accurately and precisely estimated time in activity intensity categories (bias (95% CI) sedentary = 0.8 min (-2.9, 4.5), light = 1.7 min (2.2, 5.7) and -2.6 min (-5.8, 0.7)). The overall accuracy rate for time in intensity categories was 96.2%. The AP also accurately estimated guideline minutes, guideline bouts, prolonged sitting minutes and prolonged sitting bouts. Conclusion: The AP can be used to accurately capture individualized estimates of active and sedentary behavior variables in free-living settings. (C) 2016 American College of Sports Medicine

from Sports Medicine via xlomafota13 on Inoreader http://ift.tt/2hhDmTU
via IFTTT