Free fatty acid (FFA) levels before and after the aerobic load.

<p>(<b>A</b>) R allele carriers (12 K and 8 E carriers) versus R allele non-carriers (15 K and 2 E carriers). (<b>B</b>) K allele carriers (12 R and 15 W allele carriers) versus K allele non-carriers (2 R and 8 W carriers). The asterisk indicates significant difference. (<b>C</b>) Interaction (<i>CPT1B–ADRB3</i>), carriers of both K and R alleles versus only K and only R allele carriers. Venous blood was sampled at rest and at 2, 15, and 30 min into the recovery period.