Fig. 2
From: Validation of the Fitbit One® for physical activity measurement at an upper torso attachment site
Bland Altman plots representing comparison between measured energy expenditure counts (criterion) and Fitbit-estimated energy expenditure for the upper torso-attached Fitbit One® (a), hip-attached Fitbit One® (b) and wrist-attached Fitbit Flex® (c). Solid lines indicate the mean difference between measured energy expenditure and Fitbit-estimated energy expenditure, and dashed lines indicate limits of agreement