Postexercise Hemodynamic Responses in Lean and Obese Men (original) (raw)

We assessed resting central/peripheral blood pressure (BP), postexercise BP and hemodynamic responses [stroke volume (SV), cardiac output (CO), systemic vascular resistance (SVR)] after acute exercise and 2 wk of aerobic training in lean and centrally obese men matched for BP. Methods: Eight lean (body mass index (BMI) <25 kg/m 2 ; visceral fat = 279±224 cm 3) and eight centrally obese (BMI>30 kg/m 2 ; visceral fat = 1,471±374 cm 3) men performed 6 training sessions (3d/wk for 40 min at 65-70%HRmax). Resting BP and hemodynamic measurements were obtained at baseline, following exercise for 60 min, and at 24h and 48h after the last training session. Results: Postexercise brachial and central systolic and mean arterial BP decreased 3-4 mmHg below resting in lean (P<0.001), and increased by 3 mmHg in obese (P <0.02). Post-training resting brachial/central systolic BPs were reduced by 3-4 mmHg only in lean men (P <0.05). Pretraining PEH was significantly correlated with the training-induced change in resting brachial SBP at 48h (r=0.58, P =0.02), but not at 24h (r=0.38, P =0.15). Similar correlations were observed between acute reductions in central systolic BP (SBP) and central SBP at 24h (r=0.43, P =0.09) and 48h (r=0.54, P =0.03) post-training. Conclusions: In contrast to the consistent results for lean men, PEH was not observed in centrally obese men, and resting SBP was not reduced after a short aerobic training program. Considerable individual variation in postexercise BP response among obese men may have implications for design of exercise interventions to lower BP in these individuals.