TABLE 3.

Linear regression parameters of RPP against IΔG_∼ATPI for nTG, R-92 mutant hearts for three protocols: unpaced with high [Ca²⁺], paced with high [Ca²⁺], and with dobutamine

	Unpaced (r) −1/m	Paced (r) −1/m	Dobutamine (r) −1/m
nTG	Y = −6.5x + 440	Y = −6.8x + 430	Y = −6.3x + 430
	(0.90) 0.15	(0.92) 0.15	(0.99) 0.16
R-92L	Y = −3.6x + 240	Y = −4.9x + 320	Y = −6.4x + 410
	(0.85) 0.28	(0.94) 0.20	(0.96) 0.16
R-92W	Y = −2.8x + 190	Y = −3.2x + 220	Y = −5.9x + 370
	(0.80) 0.36	(0.66) 0.31	(0.97) 0.17

(r), assessment of goodness of fit; 1/m, inverse of slope, kJ/10³ mmHg min⁻¹.