TABLE 2.

CORRELATIONS BETWEEN DIAPHRAGM FORCE GENERATED AT DIFFERENT FREQUENCIES AND DIAPHRAGM MYOD AND MYOGENIN PROTEIN LEVELS AND CALPAIN ACTIVITY

			Indirect Measure of Calpain Activity
Hz	MyoD Protein	Myogenin Protein	Talin	αII-Spectrin
50	r = 0.49	r = 0.48	r = −0.60	r = −0.48
	P < 0.05	P < 0.05	P < 0.005	P < 0.05
80	r = 0.72	r = 0.68	r = −0.54	r = −0.40
	P < 0.005	P < 0.001	P < 0.01	P < 0.05
120	r = 0.66	r = 0.68	r = −0.51	r = −0.46
	P < 0.005	P < 0.005	P < 0.01	P < 0.05
160	r = 0.72	r = 0.73	r = −0.46	r = −0.54
	P < 0.0005	P < 0.0005	P < 0.05	P < 0.005