Hand grip strength variability during serial testing as an entropic biomarker of aging: a Poincaré plot analysis

BMC Geriatrics

Table 2 Statistic indicators for investigated parameters in the older groups

Variable	Age years	M kg	H cm	BMI kg/m²	HGS kgf		Fatigue %		SD₁ kgf		SD₂ kgf		SD₁/SD₂		AFE kgf²
Men (n = 40)
					D	ND	D	ND	D	ND	D	ND	D	ND	D	ND
Mean	67.30	79.20	173.03	26.50	31.44	27.68	34.74	38.61	1.56	1.50	6.13	6.03	0.29	0.28	29.65	28.42
SD	1.26	9.18	7.72	3.02	7.35	6.80	15.86	12.45	0.26	0.27	1.82	1.91	0.17	0.13	9.01	9.96
Women (n = 40)
					D	ND	D	ND	D	ND	D	ND	D	ND	D	ND
Mean	66.95	67.11	159.56	26.39	19.64	17.10	48.09	53.84	1.63	1.58	5.38	5.05	0.35	0.34	27.41	25.17
SD	1.34	8.02	6.75	3.02	3.52	3.17	12.72	7.82	0.26	0.21	1.52	1.25	0.17	0.11	8.26	7.42
Men and women (n = 80)
					D	ND	D	ND	D	ND	D	ND	D	ND	D	ND
Mean	67.13	73.15	166.29	26.45	25.54	22.39	41.42	46.23	1.60	1.54	5.76	5.54	0.32	0.31	28.53	26.80
SD	1.31	10.50	9.89	3.00	8.25	7.49	15.78	12.86	0.26	0.25	1.71	1.68	0.17	0.12	8.66	8.87

M body mass, H body height, BMI body mass index, HGS hand grip strength, D dominant, ND nondominant, SD standard deviation, AFE area of the fitting ellipse, n number of subjects

ISSN: 1471-2318