Table 2.

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

	Total population	Caucasian	African American	Male	Female
n	32	18	14	14	18
TAC (counts/day)	382,863 ± 144,581	325,962 ± 133,681	456,021 ± 127,402*	426,980 ± 146,056	348,550 ± 137,681
TPA (min/day)	41.5 ± 27.8	34.8 ± 27.8	50.2 ± 26.2	55.3 ± 28.7	30.8 ± 22.3†
MPA (min/day)	37.7 ± 24.7	30.8 ± 24.7	46.6 ± 22.8	47.9 ± 26.2	29.8 ± 21.1†
HPA (min/day)	3.0 ± 5.8	3.3 ± 7.5	2.8 ± 3.0	6.0 ± 8.0	0.8 ± 1.2†
VHPA (min/day)	0.4 ± 1.2	0.3 ± 0.4	0.8 ± 1.9	0.9 ± 1.8	0.2 ± 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.