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KMID : 0359420210390010027
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Korean Journal of Sports Medicine
2021 Volume.39 No. 1 p.27 ~ p.33
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The Effect of Acute Aerobic Exercise on Central Blood Pressure Reactivity to Sympathetic Activation in Healthy Adults: A Randomized Crossover Trial
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Cho Min-Jeong
Kim Young-Woo
Kwon Jeong-In
Kim Hyun-Jeong
Jae Sae-Young
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Abstract
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Purpose: Acute aerobic exercise has been shown to attenuate brachial blood pressure (BP) reactivity to sympathetic activation, though whether it also attenuates central BP reactivity remains unclear. We tested the hypothesis that an acute bout of aerobic exercise would attenuate central BP reactivity to sympathetic activation.
Methods: In a randomized crossover design, 15 healthy adults (23±0 years and 23±1 kg/m2) completed two trials; (1) acute aerobic exercise (30 minutes at 60% of heart rate reserve) and (2) sitting as a time control prior to the cold pressor test (CPT) in a randomized order. During the CPT, a hand was submerged up to the wrist in an iced water bath (4°C) for 3 minutes. Heart rate and brachial and central BP were measured at baseline, during and after the CPT.
Results: Heart rate, and brachial and central BPs increased similarly during the CPT in both trials and returned to baseline after CPT (time effect, p＜ 0.05). However, brachial systolic BP reactivity to the CPT was attenuated in the acute aerobic exercise trial compared to control trial (interaction effect, p＜ 0.05). In addition, the magnitude of central systolic BP reactivity during the CPT was less increased in the acute aerobic exercise trial (Δ19.8 mmHg) versus in the control trial (Δ24.6 mmHg) (p=0.017).
Conclusion: These findings demonstrated that acute aerobic exercise attenuated both brachial and central BP reactivity to the sympathetic activation, suggesting that aerobic exercise may have a favorable effect on central BP reactivity to the sympathetic activation in young adults.
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KEYWORD
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Exercise, Blood pressure, Autonomic nervous system, Vasomotor system, Sympathetic nervous system
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