Table 4

P values for differences of troponin I and serum lactate between groups

Comparable groups		Troponin I before surgery	Troponin I 2 hours after surgery	Troponin I 24 hours after surgery	Lactate after surgery
All three groups		0.504	0.739	0.023	0.047
IHHT	RIP	0.304	0.518	0.029	0.032
IHHT	Control group	0.341	0.891	0.012	0.045
RIP	Control group	0.943	0.494	0.675	0.856

IHHT, intermittent hypoxic–hyperoxic training; RIP, remote ischaemic preconditioning.