Table 2 . Results of paired t test comparing post maximal isometric strength of trained and untrained arm for each group .

group	post maximal isometric strength after exercise				p
	Trained		untrained
	mean	SD	mean	SD
Young	13.19	3.33	11.33	3.01	P<0.0001
elderly	6.85	1.79	5.04	1.65	P<0.0001