Figure 2
From: Sex differences in response to maximal exercise stress test in trained adolescents
Oxygen uptake in boys and girls. Peak oxygen uptake (peak VO2, l/min) and peak oxygen uptake normalized to total body mass (ml/min/kg), normalized to estimated fat free mass (ml/min/kg lean body weight), and normalized to estimated total leg muscle mass (ml/min/kg leg muscle) in female (♀, N = 23) and male (♂, N = 27) subjects. *) denotes statistical significant difference (p < 0.05 by unpaired t-test with correction for multiple comparisons) between female and male subjects with regard to peak VO2, peak VO2 normalized to total body mass and estimated lean body mass, but not comparing peak VO2 normalized to estimated leg muscle mass.