Table 1.

Participant Characteristics

	Older Group			Young Group
	Women	Men	p	Women	Men	p
	n = 10	n = 10		n = 11	n = 11
Age (y)	70.5±1.9*	73.3±1.2*	ns	22.7±0.8	24.7±1.5	ns
Height (cm)	157.4±1.8	172.7±2.0	<.001	156.2±3.2	177.9±2.5	<.001
Weight (kg)	66.3±2.6	88.6±5.0	.001	60.0±5.2	76.9±4.6	.02
BMI (kg/m2)	26.8±0.9	29.7±1.4*	ns	23.7±1.7	24.2±1.4	ns
Isometric muscle strength (kg)	15.9±1.7*	37.0±1.9*	<.001	25.3±2.9	55.4±4.6	<.001
	n = 8	n = 7		n = 11	n = 11
Arm muscle CSA (cm2)	62.7±5.0	69.1±6.5	ns	55.4±5.5	58.8±6.7	ns
Arm CSA (cm2)	65.1±5.1	72.6±6.5	ns	57.7±5.6	66.7±4.4	ns
Muscle volume (cm3)	561.5±42.1	620.8±53.7	ns	516.9±50.6	584.9±40.0	ns
Arm volume (cm3)	582.2±42.7	652.5±53.7	ns	537.7±51.4	613.1±40.3	ns
Muscle quality (kg/cm2)	0.25±0.17*	0.56±0.05*	.001	0.47±0.05	0.89±0.07	<.001

Note: Data presented as mean ± SE. BMI = body mass index; CSA = cross-sectional area; ns = not significant.

*Significantly different from young women or men.

p, significance value from t test for the comparison between women and men for each age group.