Figure 2
Estimated mean level of highest 10-second average of VO2 in the last minute of exercise (peak VO2), VO2 at lactate threshold (V02@AT), maximum power output and oxygen pulse with 95% confidence interval by sex- and month-specific tertiles of irisin. Analysis of variance was adjusted for age, body-mass index, smoking and time between core examination and pulmonary function testing. *The whole population as well as only subjects with a maximal time-lag between blood sampling and pulmonary function testing of one month.