The ActiGraph counts processing and the assessment of vigorous activity

Summary The purpose of this study was to investigate the effect of different band‐pass filters on the measurement bias with ActiGraph counts during high speed running and for estimating free‐living vigorous physical activity ( VPA ). Two alternative band‐pass filters were designed, extending the original frequency range from 0·29 to 1·66 Hz ( AG ) to 0·29–4 Hz ( AC 4) and 0·29–10 Hz ( AC 10). Sixty‐two subjects in three age groups participated...