Muscle-Bone Interactions in Chinese Men and Women Aged 18–35 Years

Table 5

Muscle strength, power, and cross-sectional area (mean ± SD).

Variable	Female (n = 25)		Male (n = 28)
	Younger (n = 15)	Older (n = 10)	Younger (n = 15)	Older (n = 13)
1RM leg press (kg)	104.3 ± 31.6^b	96.6 ± 26.1^b	165.1 ± 18.6^a	230.0 ± 116.1^a#
R handgrip strength (kg)	25.3 ± 4.7^b	27.4 ± 2.9^b#	41.3 ± 4.3^a	44.7 ± 5.8^a#
L handgrip strength (kg)	24.1 ± 3.9^b	25.8 ± 3.5^b	38.9 ± 4.9^a	41.5 ± 6.0^a
Maximal handgrip (kg)	25.6 ± 1.1^b	27.7 ± 0.9^b#	41.9 ± 4.6^a	45.0 ± 5.7^a#
Average jump time (s)	0.50 ± 0.04^b	0.52 ± 0.03^b	0.62 ± 0.04^a	0.63 ± 0.05^a
Average jump height (cm)	31.8 ± 5.1^b	33.3 ± 3.3^b	46.9 ± 6.0^a	49.5 ± 7.1^a
Maximal jump power (W)	656.1 ± 189.9^b	761.0 ± 184.1^b	972.1 ± 106.9^a	974.1 ± 184.4^a
Muscle cross-sectional area (mm^2)	5941 ± 1136^b	6980 ± 980^b#	7980 ± 96^a	8812 ± 974^a#

1RM: repetition maximum; kg: kilogram; R: right; L: left; s: seconds; cm: centimeters; W: watts; mm²: square millimeters; SD: standard deviation; ; a > b; # older > younger.