Sarcopenia-related features and factors associated with lower muscle strength and physical performance in older Chinese: a cross sectional study

Table 2 The degrees of difference in sarcopenia related parameters with age

		ASM index((kg/m²)			Gait speed (m/s)			Handgrip strength (kg)			Repeated chair stands (s)
Males	n	Mean ± SD	Comparison1 (%)	Comparison2 (%)	Mean ± SD	Comparison1 (%)	Comparison2 (%)	Mean ± SD	Comparison1 (%)	Comparison2 (%)	Mean ± SD	Comparison1 (%)	Comparison 2 (%)
20–49	56	8.88 ± 0.84	-	-	1.50 ± 0.24	-	-	40.6 ± 5.8	-	-	6.29 ± 2.0	-	-
50–59	20	9.31 ± 0.84	4.84	4.84	1.53 ± 0.25	2.00	2.00	41.53 ± 5.73	2.29	2.29	7.39 ± 1.84	17.49	17.49
60–69	82	8.55 ± 0.73	−3.72	−8.16	1.23 ± 0.28	−18.00	−19.61	36.72 ± 8.26	−9.56	−11.58	10.63 ± 7.62	69.00	43.84
70–79	112	8.50 ± 0.68	−4.28	−0.58	1.18 ± 0.25	−21.33	−4.07	33.37 ± 7.45	−17.81	−9.12	10.46 ± 2.59	66.30	−1.60
80-	13	8.26 ± 1.23	−6.98	−2.82	1.07 ± 0.29	−28.67	−9.32	26.56 ± 5.89	−34.58	−20.41	11.63 ± 3.65	84.90	11.19
Females
20–49	92	7.31 ± 0.53	-	-	1.45 ± 0.19	-	-	26.1 ± 3.9	-	-	5.81 ± 1.40	-	-
50–59	50	7.69 ± 0.84	5.20	5.20	1.46 ± 0.28	0.69		26.95 ± 5.13	3.26	3.26	8.19 ± 6.63	40.96	40.96
60–69	146	7.69 ± 0.78	5.20	0.00	1.20 ± 0.29	−17.24	−17.81	21.74 ± 5.62	−16.70	−19.33	10.17 ± 3.32	75.04	24.18
70–79	86	7.66 ± 0.78	4.79	−0.39	1.13 ± 0.30	−22.07	−5.83	21.54 ± 5.59	−17.47	−0.92	11.82 ± 7.76	103.44	16.22
80-	22	7.14 ± 0.68	−2.33	−6.79	0.86 ± 0.22	−40.69	−23.89	18.65 ± 5.12	−28.54	−13.42	17.30 ± 16.46	197.76	46.36

Comparison 1, compare the mean values (X_n) of the variable obtained in the groups aged ≥ 50 with those (X) obtained in the 20–49 years group, and calculated as 100*(X_n-X)/X; Comparison 2: compare the mean values (X_n) of the variable obtained in the groups aged 50 with the mean values X_n-1of the next younger group, and calculated as 100*(X_n-X_n-1)/X_n-1

ISSN: 1471-2318