Fig. 3

Effect of initial peak \({\dot{\text{V}}\text{O}}_{ 2}\) on change in peak \({\dot{\text{V}}\text{O}}_{ 2}\) resulting from aerobic exercise. a Low-fitness/inactive group (n = 19), b low-fitness/active group (n = 7), c high-fitness/inactive group (n = 11), d high-fitness/active group (n = 16). The results are expressed as mean ± SD. *P < 0.05 vs. baseline. N.S. not significant