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May 24, 2014The Journal of PhysiologyOpen Access

Exercise training modulates functional sympatholysis and α‐adrenergic vasoconstrictor responsiveness in hypertensive and normotensive individuals

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Why the study?

Does 8 weeks of aerobic exercise training improve functional sympatholysis and postjunctional α-adrenergic responsiveness in hypertensive and normotensive individuals?

Population

16 untrained individuals, comprising 8 with essential hypertension and 8 normotensive individuals.

Comparison

8 weeks of aerobic exercise training. vs Pre-training baseline and normotensive controls.

Design

Cohort

Follow-up

8 weeks

Key result

Eight weeks of aerobic exercise training improved functional sympatholysis and reduced postjunctional α-adrenergic responsiveness in both normotensive and hypertensive individuals (P<0.05).

Authors

SMStefan P. MortensenMNMichael NybergLGLasse Gliemann

Discussion

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Member takes

Overview

Supports mechanistic role of exercise in vascular control; hypothesis-generating for BP benefits in hypertension.

Structured PICO

Does 8 weeks of aerobic exercise training improve functional sympatholysis and postjunctional α-adrenergic responsiveness in hypertensive and normotensive individuals?

P
Population
16 untrained individuals, comprising 8 with essential hypertension (mean age 47 ± 2 years) and 8 normotensive individuals (mean age 46 ± 1 years).
I
Intervention
8 weeks of aerobic exercise training (3–4 times per week).
C
Comparator
Pre-training baseline (within-subject comparison) and normotensive controls (between-subject comparison).
O
Outcome
Leg haemodynamics (exercise hyperaemia and leg vascular conductance) during arterial tyramine infusion, arterial ATP infusion, and/or one-legged knee extensions.surrogate

Main Result

p-value: p=<0.05

Aerobic exercise training improves functional sympatholysis and reduces postjunctional α-adrenergic responsiveness in both hypertensive and normotensive individuals, providing a mechanistic basis for how exercise improves tissue perfusion and lowers blood pressure.

Cite This Study

Mortensen et al. (2014) studied Essential hypertension (n=16). Aerobic exercise training vs. Pre-training state and normotensive individuals was evaluated on Functional sympatholysis and postjunctional α-adrenergic responsiveness (p=<0.05). Eight weeks of aerobic exercise training improved functional sympatholysis and reduced postjunctional α-adrenergic responsiveness in both normotensive and hypertensive individuals (P<0.05).

synapsesocial.com/papers/6a147cfee64a7501febd5eb8https://doi.org/10.1113/jphysiol.2014.273722
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Exercise training ameliorates adrenergic control in spontaneously hypertensive rats2020 · 5 citations
  2. 2Impaired formation of vasodilators in peripheral tissue in essential hypertension is normalized by exercise training2012 · 43 citations
  3. 3Exercise training reduces the sympathetic component of the blood pressure-heart rate baroreflex in man1992 · 65 citations
  4. 4Effect of high-intensity exercise training on functional sympatholysis in young and older habitually active men2017 · 6 citations
  5. 5Exercise Training Restores Baroreflex Sensitivity in Never-Treated Hypertensive Patients2007 · 295 citations