Table 3

Results of treadmill exercise tests in VVIR and VVI

VVIRVVIp value
Modified bruce exercise protocol
Exercise time (s)1096 (45)883 (60)< 0.005
Work done (kJ)41.2 (8.3)21.0 (2.6)< 0.05
Resting VO2 (ml/min/kg)3.7 (0.2)3.5 (0.3)NS
Peak VO2 (ml/min/kg)16.1 (1.2)13.2 (0.9)< 0.005
Rate pressure product18010 (1138)11354 (602)< 0.005
Borg score at peak exercise15.8 (0.5)15.6 (0.7)NS
Resting CI (l/min/m2)1.9 (0.1)1.9 (0.2)NS
Submax CI (l/min/m2)4.8 (0.3)4.2 (0.3)< 0.05
High level exercise protocol
Exercise time (s)1548 (132)1359 (180)< 0.05
Work done (kJ)68.4 (0.3)58.3 (0.4)< 0.05
Peak VO2 (ml/min/kg)10.9 (0.3)10.6 (0.4)NS
Rate pressure product14424 (977)11269 (790)< 0.05
Borg score at peak exercise13.8 (1.1)15.3 (1.0)NS
  • Values are mean (SEM).