Table 1. Representative parameters of objectively measured physical activity for each age group.

	Y	M	O
	(n = 24)	(n = 24)	(n = 24)
Lying
Total time (min)	415.5±110.8	381.1±86.4	448.0±103.0
Sitting
Total time (min)	622.5±92.6	658.9±163.3†	546.6±108.4
Standing
Total time (min)	297.9±93.5	307.3±120.4	341.3±118.6
Postural transitions
Total time (min)	7.6±4.0	9.4±8.1	6.7±3.7
Mean speed (m min−1)	0.41±0.20	0.48±0.26	0.43±0.41
Walking
Total time (min)	81.9±41.2	68.0±30.4	82.9±38.2
Mean speed (m min−1)	69.6±7.5*	68.5±7.3†	60.0±6.3
Stair climbing
Total time (min)	5.3±2.8*	3.8±1.9	3.2±2.8
Mean speed (m min−1)	77.2±7.2*	75.5±7.5†	67.0±7.4
Overall activity
Total count	21525.4±5834.4	20487.3±5909.5	22576.8±5538.5
Mean speed (m min−1)	4.4±2.2	3.5±1.4	3.8±1.7

Values are means ± SD of parameters relative to 24 h instrumental monitoring of habitual physical activity.

^* = significantly different between young (Y) and older (O) participants;

^† = significantly different between middle-aged (M) and older participants.