. Author manuscript; available in PMC: 2012 Mar 2.

Published in final edited form as: J Aging Phys Act. 2010 Apr;18(2):158–170. doi: 10.1123/japa.18.2.158

Table 4.

Measured and Predicted Physical Activity Intensity Expressed in Metabolic Equivalents (M ± SD) Across Walking and Running Speeds

Age group	Measured	Brage et al., 2003	Freedson et al., 1998	Yngve et al., 2003
20–29 years (n = 30)
3.22 km/hr	2.9 ± 0.30	2.9 ± 0.70	2.4 ± 0.26^a	2.1 ± 0.27^a
4.83 km/hr	3.8 ± 0.38	4.5 ± 0.47^a	4.0 ± 0.50	3.8 ± 0.52
6.44 km/hr	5.3 ± 0.48	6.0 ± 0.65^a	5.7 ± 0.70^a	5.6 ± 0.72
9.66 km/hr (n = 27)	9.5 ± 0.82	9.1 ± 1.20^a	9.0 ± 1.29^a	9.0 ± 1.34^a
40–49 years (n = 28)
3.22 km/hr	2.7 ± 0.24^b	3.1 ± 0.23^a	2.4 ± 0.21^a	2.2 ± 0.22^a
4.83 km/hr	3.5 ± 0.28^b	4.7 ± 0.47^a	4.2 ± 0.46^a	4.0 ± 0.47^a
6.44 km/hr	5.1 ± 0.49	6.5 ± 0.89^a	6.1 ± 0.89^a	5.8 ± 0.93^a
9.66 km/hr (n = 21)	9.0 ± 0.67^b	9.0 ± 1.11	8.8 ± 1.18	9.0 ± 1.23
60–69 years (n = 22)
3.22 km/hr	3.0 ± 0.34^c	3.2 ± 0.45^a	2.4 ± 0.46^a	2.2 ± 0.48^a
4.83 km/hr	3.8 ± 0.42^c	4.8 ± 0.72^a	4.1 ± 0.74^a	3.9 ± 0.77
6.44 km/hr	5.7 ± 0.55^c	6.3 ± 0.10^a	5.8 ± 1.0	5.6 ± 1.10

Equation estimate significantly different than measured METs within age, within speed, p < .05.

Significantly different from 20- to 29-year group across age within speed, p < .05.

Significantly different from 40- to 49-year group across age within speed, p < .05.