Concurrent strength and aerobic exercise reduce plasma leptin and cortisol levels

To analyze the correlation between leptin and cortisol after a concurrent training (CT) session. Thirty male volunteers (age: 27.7 ± 5.1 years, BMI: 27.08 ± 1.42 kg/m2) were randomly assigned to an experimental group (EG: n=15) and a control group (CG: n=15). Baseline leptin and cortisol levels were determined by collecting blood samples. EG was subjected to CT (indoor cycling followed by strength training), whereas CG performed no exercise. After CT, blood samples were collected in EG and CG to determine the hormone variables. EG showed a significant decrease (p<0.05) intra and intergroup in leptin and cortisol levels. Only the EG showed a significant correlation (r=0.756; p<0.05) between leptin and cortisol levels. CT session is linked to in decreased leptin and cortisol levels, exhibiting a positive correlation between them.