Table 2.

Accelerometer Characteristics, n = 301

	Mean (SD)	Minimum	Maximum
Days of device wear time	5.9 (0.4)	3	11
Device wear time, h/day	23.9 (0.2)	22.7	24
Hours spent physically active (h/day)	7.0 (1.6)	3.4	11.7
Low physical activity (n = 101)	5.2 (0.7)	3.4	6.1
Medium physical activity (n = 100)	7.0 (0.4)	6.2	7.6
High physical activity (n = 100)	8.7 (0.9)	7.7	11.7
Activity fragmentation, %	24.9 (5.3)	12.9	45.7
Low fragmentation (n = 101)	19.4 (2.3)	12.9	22.5
Medium fragmentation (n = 100)	24.5 (1.1)	22.5	26.7
High fragmentation (n = 100)	30.8 (3.7)	26.7	45.7

Notes: Hours spent active and activity fragmentation were tertiled to determine low, medium, and high categories. Activity fragmentation was operationalized as the active-to-sedentary transition probability, calculated as the reciprocal of the average daily activity bout length for each participant (18,24).