Figure 2From: Estimating relative intensity using individualized accelerometer cutpoints: the importance of fitness level Regression lines of activity counts at measured HRR% between fitness groupings. Data collected during treadmill speeds of 3.2, 4.8, 6.4 kph, or 4.8, 6.4, 8.0 kph, or 4.8, 6.4, 9.6 kph. (<10 MET) low fit group, (10–13 MET) moderate fit group, and (>13 MET) high fit group.Back to article page