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Figure 1 Relationship between VE/VCO₂ slope and nonadjusted leptin levels (a) and body fat (b) divided into tertiles (analysis of variance [ANOVA], followed by Newman-Keuls multiple comparison post-hoc tests). Data are expressed as mean ± SEM. When leptin levels adjusted for body fat were divided into tertiles, the relationship between the adjusted leptin tertiles and VE/VCO₂ slope was virtually identical to that between VE/VCO₂ slope and unadjusted leptin. VCO₂ = carbon dioxide production; VE = ventilation per unit time.

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