Table 5: The suggested regression equations and cut points obtained for two subgroups of differing age; group 1: age 24–42 (35.7 ± 5.7) years, n = 20; group 2: age 43–62 (50.0 ± 5.5) years, n = 22. β: regression coefficient; CI: confidence interval; SEE: standard error of the estimate; MPA: moderate physical activity; VPA: vigorous physical activity.

Age groupParameterβ95% CIP SEECut-point MPACut-point VPA

Intercept2.4362.074 to 2.798<.001
24–42 yearsCounts/min to <.0010.6312085525
Counts/min2 to .004
Intercept2.921 2.457 to 3.385<.001
43–62 yearsCounts/min to <.0010.881524465
Counts/min2 to .058