Table 3.

Percent differences between younger and older men (mean ± standard error)

	Youngr	Older	Reactance (X)		Resistance (R)		Phase (P)
	Numbe r	Numbe r	% Diff	p value	% Diff	p value	% Diff	p values
Mean Total	20	23	−13 ± 6	0.06	−14 ± 7	0.07	−3 ± 10	0.73
Mean Upper Extremity	8	11	−1 ± 8	0.94	−5 ± 13	0.72	−1 ± 16	0.94
Deltoid	8	11	6 ± 16	0.71	−5 ± 13	0.73	4 ± 26	0.88
Biceps brachii	8	11	−1 ± 9	0.92	−4 ± 16	0.83	−7 ± 21	0.77
Brachioradialis	8	11	6 ± 9	0.46	2 ± 13	0.87	2 ± 17	0.90
Triceps brachii	8	11	−11 ± 9	0.37	−18 ±	0.58	−1 ± 21	0.95
Forearm	8	11	2 ± 8	0.78	1 ± 12	0.91	2 ± 14	0.89
Forearm flexors	8	11	−14 ± 8	0.15	−7 ± 15	0.69	−12 ±	0.47
Extensor indicis	8	11	−9 ± 9	0.32	0 ± 7	0.97	−8 ± 9	0.38
Mean Lower Extremity	12	12	−25 ± 7	0.01	−21 ± 8	0.02	−7 ± 12	0.58
Tensor fascia	12	12	−36 ± 6	3E-04	−20 ± 6	0.01	−22 ±	0.10
Biceps femoris	12	12	−17 ±	0.13	−30 ± 8	0.01	7 ± 20	0.73
Vastus lateralis	12	12	−17 ±	0.17	−32 ± 6	4E-04	17 ± 21	0.38
Vastus medialis	12	12	−20 ± 9	0.06	−21 ± 7	0.01	−2 ± 14	0.89
Tibialis anterior	12	12	−26 ± 8	0.01	−28 ± 8	0.01	0 ± 12	0.98
Medial gastroc.	12	12	−27 ± 8	0.01	−21 ±	0.10	−14 ±	0.40
Extensor	12	12	−36 ±	4E-03	−30 ± 6	2E-04	−15 ±	0.26

Significant differences shown in bold.