. Author manuscript; available in PMC: 2017 May 1.

Published in final edited form as: Magn Reson Med. 2016 Feb 19;75(5):1859–1866. doi: 10.1002/mrm.26162

Table 2.

Data are calculated based on [ATP] = 5.3 μmol/g and are presented as mean±SE.

	Baseline		High Cardiac Workload
	EPI	ENDO	EPI	ENDO
PCr/ATP	2.02±0.05	2.2±0.05	2.21±0.09	2.44±0.11
k_f,CK (s⁻¹)	0.40±0.04	0.38±0.06	0.37±0.06	0.29±0.01
flux_f,CK (μmol g⁻¹ s⁻¹)	4.4±0.53	4.57±0.84	4.52±0.47	3.68±0.16
k_r,ATPase (s⁻¹)	0.21±0.02	0.21±0.02	0.44±0.05^*	0.42±0.02^*
flux_r,ATPase (μmo1 g⁻¹ s⁻¹)	1.11±0.12	1.12±0.13	2.35±0.27^*	2.21±0.08^*

PCr/ATP ratios (n = 8 for baseline and n = 7 for HWL) were obtained using partially relaxed spectra that were normalized back to its fully relaxed equivalent state as described in the methods section. n = 6 for baseline flux rates and n = 5 for high cardiac workstate flux rates. EPI, subepicardial; ENDO, subendocardial

p<0.01 vs. baseline.