Effect of ischemic preconditioning in skeletal muscle measured by functional magnetic resonance imaging and spectroscopy: a randomized crossover trial

Table 2 pH MRS signals

pH	Ischemia and exercise	Post-ischemic stenosis	Post-ischemic stenosis and 4 h IPC	Post-ischemic stenosis and 48 h IPC
Number of subjects	(n = 7)	(n = 8)	(n = 8)	(n = 8)
Baseline	7.03 ± 0.02	7.05 ± 0.03	7.05 ± 0.03	7.07 ± 0.05
Ischemia	7.08 ± 0.02*	7.10 ± 0.04*	7.09 ± 0.02*	7.09 ± 0.02
Ischemic exercise	6.93 ± 0.14	6.92 ± 0.14	6.92 ± 0.17	6.98 ± 0.14
Post-ischemic stenosis	-	6.88 ± 0.12	6.91 ± 0.15	6.96 ± 0.14
Reperfusion	6.85 ± 0.18	6.86 ± 0.12*	6.89 ± 0.17	6.90 ± 0.17
End	7.04 ± 0.02	7.10 ± 0.04	7.07 ± 0.08	7.08 ± 0.02

Mechanical preconditioning (IPC) was applied 4 h or 48 h before ischemia.
Data represent the means ± SD. The baseline is defined as the NMR signal prior to ischemia. IPC: ischemic preconditioning, * p < 0.05 versus baseline

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