Table 3 . Results of Independent t test comparing pre and post maximal isometric strength of trained and untrained arm between two group .

side	exercise	Young group		elderly group		Mean difference	T test	p
		mean	SD	mean	SD
Trained	pre	10.06	3.38	4.48	1.33	5.58	5.32	P<0.001
	post	13.20	3.33	6.85	1.80	6.34	5.81	P<0.001
untrained	pre	9.13	3.20	3.62	1.18	5.51	5.60	P<0.001
	post	11.33	3.01	5.04	1.65	6.28	6.35	P<0.001