Physical Activity Enhances Metabolic Fitness Independently of Cardiorespiratory Fitness in Marathon Runners

Figure 2

Oral glucose tolerance tests were conducted on marathon runners and sedentary paired controls with similar-VO_2max ((a, b),  ) and with different-VO_2max ((c, d), ). While no differences in plasma glucose were seen between runners and sedentary controls regardless of VO_2max stratification, runners regardless of VO_2max stratification had a significantly lower insulin response ( for both groups, One-Way Repeated Measures ANOVA).

(a)

(b)

(c)

(d)