Table 2—

Mean physical activity by accelerometry: all subjects combined and by ethnic and sex groups

Total populationCaucasianAfrican AmericanMaleFemale
n3218141418
TAC (counts/day)382,863 ± 144,581325,962 ± 133,681456,021 ± 127,402*426,980 ± 146,056348,550 ± 137,681
TPA (min/day)41.5 ± 27.834.8 ± 27.850.2 ± 26.255.3 ± 28.730.8 ± 22.3
MPA (min/day)37.7 ± 24.730.8 ± 24.746.6 ± 22.847.9 ± 26.229.8 ± 21.1
HPA (min/day)3.0 ± 5.83.3 ± 7.52.8 ± 3.06.0 ± 8.00.8 ± 1.2
VHPA (min/day)0.4 ± 1.20.3 ± 0.40.8 ± 1.90.9 ± 1.80.2 ± 0.4
  • Data are means ± SD.

  • * Significantly different between African American and Caucasian subjects (P < 0.001).

  • Significantly different between male and female subjects (P < 0.05). TAC, total activity counts.