Postexercise Hemodynamic Responses in Lean and Obese Men.

Autor:	Zeigler ZS; College of Science, Engineering, and Technology, Grand Canyon University, Phoenix, AZ., Swan PD; College of Health Solutions, Arizona State University, Phoenix, AZ., Buman MP; College of Health Solutions, Arizona State University, Phoenix, AZ., Mookadam F; Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, Phoenix, AZ., Gaesser GA; College of Health Solutions, Arizona State University, Phoenix, AZ., Angadi SS; College of Health Solutions, Arizona State University, Phoenix, AZ.; Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, Phoenix, AZ.
Jazyk:	angličtina
Zdroj:	Medicine and science in sports and exercise [Med Sci Sports Exerc] 2018 Nov; Vol. 50 (11), pp. 2292-2300.
DOI:	10.1249/MSS.0000000000001684
Abstrakt:	Purpose: We assessed resting central/peripheral blood pressure (BP), postexercise BP, and hemodynamic responses (stroke volume, cardiac output, and systemic vascular resistance) after acute exercise and 2 wk of aerobic training in lean and centrally obese men matched for BP. Methods: Eight lean (body mass index < 25 kg·m, visceral fat = 279 ± 224 cm) and eight centrally obese (body mass index > 30 kg·m, visceral fat = 1471 ± 374 cm) men performed six training sessions (3 d·wk for 40 min at 65%-70% HRmax). Resting BP and hemodynamic measurements were obtained at baseline, after exercise for 60 min, and at 24 h and 48 h after the last training session. Results: Postexercise brachial and central systolic BP (SBP) and mean arterial BP decreased 3-4 mm Hg below resting in lean (P < 0.001) and increased by 3 mm Hg in obese (P < 0.02). Posttraining resting brachial/central SBP were reduced by 3-4 mm Hg only in lean men (P < 0.05). Pretraining postexercise hypotension was significantly correlated with the training-induced change in resting brachial SBP at 48 h (r = 0.58, P = 0.02), but not at 24 h (r = 0.38, P = 0.15). Similar correlations were observed between acute reductions in central SBP and central SBP at 24 h (r = 0.43, P = 0.09) and 48 h (r = 0.54, P = 0.03) posttraining. Conclusions: In contrast to the consistent results for lean men, postexercise hypotension 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.
Databáze:	MEDLINE
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