ORIGINAL ARTICLE  SPORT CARDIOLOGY 

The Journal of Sports Medicine and Physical Fitness 2021 March;61(3):468-79

DOI: 10.23736/S0022-4707.20.11222-2

Copyright © 2020 EDIZIONI MINERVA MEDICA

lingua: Inglese

Combined exercise training improves blood pressure at rest and during exercise in young obese prehypertensive men

Jatuporn PHOEMSAPTHAWEE ✉, Bhuwanat SRITON

Department of Sports Science and Health, Faculty of Sports Science, Kasetsart University, Nakhon Pathom, Thailand

BACKGROUND: Regular exercise is an effective intervention to yield health-related benefits, though an optimal dosage and its ability to improve hemodynamics at rest and during exercise are yet to be established. Therefore, this study aimed to assess the effects of a combined (aerobic and resistance) exercise training program on hemodynamic variables at rest and during exercise in young obese prehypertensive men.
METHODS: Twenty obese prehypertensive men (age: 20±1.2 years) were randomly assigned to either the combined exercise training group (CBT, N.=10), or the control group (CON, N.=10). The CBT underwent a supervised combined exercise training program incorporating four 60-min sessions per week over 12 weeks, whereas the CON remained in habitual activities. We assessed BP, peak oxygen consumption (V̇O2peak), body composition, muscular strength, and hemodynamic responses to incremental exercise at baseline and post intervention.
RESULTS: The study revealed significant improvements in resting systolic blood pressure (SBP) of 4.3% (P<0.05), and rate-pressure product (RPP) of 11.3% (P<0.05) following 12 weeks of training. Significant reductions in SBP and RPP during exercise were also present at every exercise intensity. Moreover, the CBT training improved V̇O2peak by 18.2% (P<0.01), upper body muscle strength by 15.1% (P<0.01), and reduced body fat (P<0.01).
CONCLUSIONS: The CBT is effective in reducing SBP and myocardial oxygen demand at rest and during exercise. It can also improve cardiorespiratory fitness, muscular strength, and reduce body fat; especially in terms of abdominal obesity. Thus, we suggest the use of the CBT program for the prevention of future hypertension in young obese prehypertensive men.

KEY WORDS: Blood pressure; Cardiac output; Exercise; Obesity; Oxygen consumption