Supplemental Figures

Three figures in JPEG format.

Files in this Data Supplement:

• Figure S1 - Comparison of ACC-predicted PAI with measured PAI during level walking (light gray, square symbols), graded walking (dark gray, triangular symbols), and level running (black, diamond symbols) on treadmill. Lines are mean error trend (solid) ± 2SD (broken). Panels represent different levels of individual calibration. I: treadmill calibration with indirect calorimetry (reference level). II: treadmill calibration without indirect calorimetry (assuming same walk-run efficiency for all participants at any given work rate). III: step test calibration with indirect calorimetry. IV: step test calibration without indirect calorimetry (assuming same step efficiency for all participants at any given work rate). V: 3-min walk calibration with indirect calorimetry. VI: 3-min walk calibration without indirect calorimetry. VII and EJCN a: nonexercise calibration.
• Figure S2 - Comparison of HR-predicted PAI with measured PAI during level walking (light gray, square symbols), graded walking (dark gray, triangular symbols), and level running (black, diamond symbols) on treadmill. Lines are mean error trend (solid) ±2 SD (broken). Panels represent different levels of individual calibration. I: treadmill calibration with indirect calorimetry (reference level). II: treadmill calibration without indirect calorimetry (assuming same walk-run efficiency for all participants at any given work rate). III: step test calibration with indirect calorimetry. IV and EJCN d: step test calibration without indirect calorimetry (assuming same step efficiency for all participants at any given work rate). V: 3-min walk calibration with indirect calorimetry. VI: 3-min walk calibration without indirect calorimetry. VII: Keytel et al. (2005). EJCN b: nonexercise calibration. Note different y-axis scale for Keytel estimates.
• Figure S3 - Bland-Altman plots of branched models for combining ACC-PAI and HR-PAI relationships compared with measured PAI during level walking (light gray, square symbols), graded walking (dark gray, triangular symbols), and level running (black, diamond symbols) on the treadmill. Lines are mean error trend (solid) ±2 SD (broken). Panels represent different levels of individual calibration. I: treadmill calibration with indirect calorimetry (reference level). II: treadmill calibration without indirect calorimetry (assuming same walk-run efficiency for all participants at any given work rate). III: step test calibration with indirect calorimetry. IV and EJCN a+d: step test calibration without indirect calorimetry (assuming same step efficiency for all participants at any given work rate). V: 3-min walk calibration with indirect calorimetry. VI: 3-min walk calibration without indirect calorimetry. VII and EJCN a+b: nonexercise calibration.