. Author manuscript; available in PMC: 2019 Mar 11.

Published in final edited form as: Exp Gerontol. 2017 Dec 13;102:84–92. doi: 10.1016/j.exger.2017.12.007

Table 4.

Linear regression analysis of Ca^{2 +} sensitivity (pCa₅₀) of myosin heavy chain (MHC) I and IIA single fibers for isokinetic knee extension power (Nm) in young and older adults.

Isokinetic velocity (°/s)	pCa₅₀	β	SE	P value
60	MHC I	333.91	122.99	0.02
	MHC IIA	−196.31	185.96	0.31
120	MHC I	545.27	195.78	0.01
	MHC IIA	−324.10	296.02	0.29
180	MHC I	790.97	303.21	0.02
	MHC IIA	−487.98	468.13	0.31
240	MHC I	901.78	347.54	0.02
	MHC IIA	−540.21	536.56	0.33
300	MHC I	604.84	428.94	0.18
	MHC IIA	−163.95	658.23	0.81

All models were adjusted for leg fat-free mass (kg) measured from DEXA. β represents the unstandardized regression coefficient.

Bold indicates p < 0.05