Table 2. Pearson correlation coefficients between stair ascent and sit-to-stand parameters and a standardized measurement of multi-joint leg-extensor power in men and women aged 20–70 years (N = 91–95).

				Leg-extensor power
Stair ascent	Sensor-based analyses	unloaded	Total ascent duration	-0.53
			Ascent rise duration	-0.50
			Power (watt)	0.80
	Duration-based estimation		Power (watt)	0.80
	Sensor-based analyses	loaded (+10%)	Total ascent duration	-0.66
			Ascent rise duration	-0.62
			Power	0.80
	Duration-based estimation		Power (watt)	0.88
Sit-to-stand	Sensor-based analyses	unloaded	Total STS duration	-0.44
			Sit-to-stand transition duration	-0.50
			Power	0.79
	Duration-based estimation		Power (watt)	0.86
	Sensor-based analyses	loaded (+10%)	Total STS duration	-0.42
			Sit-to-stand transition duration	-0.41
			Power	0.81
	Duration-based estimation		Power (watt)	0.85

All correlation coefficients are significant at P < 0.05. For correlation analyses with duration parameters, leg-extensor power (in watt) was divided by BM.