. Author manuscript; available in PMC: 2016 Jul 26.

Published in final edited form as: Osteoporos Int. 2015 Jul 21;27(2):463–471. doi: 10.1007/s00198-015-3236-5

Table 1.

Baseline characteristics of the study population by group and gender

	Healthy older		Mobility-limited older
	N=26		N=22
	Male	Female	Male	Female
	N=14	N=12	N=10	N=12^a
Age (years)	73.9±3.6	74.2±3.9	78.5±3.8^*	76.1±4.7^‡
BMI (kg/m²)	26.3±3.0	24.1±4.4	27.2±2.6	26.7±4.0
MMSE (score)	29.3±0.8	29.2±0.8	28.7±1.5	28.9±0.9
Number of medications	–	–	3.6±2.5	2.1±2.2
Number of diagnoses	–	–	2.7±1.8	1.8±1.9
Gait speed (m/s)	1.2±0.3	1.2±0.1	0.8±0.2^*	0.9±0.1^*^‡
Chair stand (s)	10.9±2.1	12.0±2.4	15.7±3.5^*	16.1±4.5^*^‡
SPPB (score)	11.3±1.2	10.8±0.9	7.8±1.2^*	7.9±1.4^*^‡
400 m (s)	292.0±38.1	309.4±38.7	395.7±57.2^*	364.4±47.5^*^‡
Stair climb (s)	5.1±0.7	5.8±0.7^†	7.6±1.8^*	7.7±2.8^‡
1RM strength (N)	1629±200	869±211^†	1275±394^*	921±194^†^‡⁺
Peak power (W) 40 % 1RM	612±114	264±73^†	329±109^*	200(82) ^†^‡⁺
Peak power (W) 70 % 1RM	656±140	256±71^†	358±110^*	230±88^†^‡⁺
Total muscle CSA (cm²)	131±13	82±10^†	110±14^*	82±21^†⁺
Total intermuscular adipose tissue CSA (cm²)	2.8(1.8)	2.2±1.6	4.8±2.6	4.0±1.7^*^‡
Specific strength (N/cm²)	12.5±1.6	10.5±2.2	11.5±2.5	11.2±1.2⁺

Results are reported as mean±standard deviation or median (interquartile range)

BMI body mass index, MMSE mini-mental state examination, SPPB Short Physical Performance Battery, 40 % 1RM 40 % of a one-repetition maximum, 70 % 1RM 70 % of a one-repetition maximum, 1RM one-repetition maximum, CSA cross-sectional area

p<0.05 (mobility-limited older as compared to healthy older by gender);

^†

p<0.05 (male vs female within group);

^‡

p<0.05 (mobility-limited older as compared to healthy older group);

⁺

p<0.05 (male vs female)

Only 11 subjects with CT scan available