Key result
Supervised high-intensity interval spinning training lowered MSNA similarly in hypertensive and normotensive men, but reduced blood pressure by 4 mmHg only in the hypertensive group (p<0.05).
Why the study?
To test the hypothesis that exercise training reduces resting sympathetic activity and improves baroreflex control in hypertensive and normotensive men, but reduces blood pressure only in hypertensive men.
Does 8 weeks of supervised high-intensity interval spinning training reduce resting sympathetic activity and improve baroreflex control in un-medicated middle-aged/older men?
Population
13 un-medicated stage-1 hypertensive males and 12 normotensive controls
Comparison
Hypertensive males vs normotensive controls undergoing exercise training
Design
Interventional study
Follow-up
8 weeks
Authors
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HIIT spinning-associated MSNA reduction may not drive BP lowering; leaves open mechanisms of exercise BP benefit and need for RCTs.
Does 8 weeks of supervised high-intensity interval spinning training reduce resting sympathetic activity and improve baroreflex control in un-medicated middle-aged/older men?
p-value: p=<0.05
Exercise training reduces muscle sympathetic nerve activity in both hypertensive and normotensive men, but only lowers blood pressure in hypertensive men, indicating sympathetic reduction is not the primary driver of blood pressure lowering.
Ehlers et al. (2023) studied Hypertension (n=25). Supervised high-intensity interval spinning training vs. Normotensive controls was evaluated on Muscle sympathetic nerve activity (MSNA) and blood pressure (p=<0.05). Supervised high-intensity interval spinning training lowered MSNA similarly in hypertensive and normotensive men, but reduced blood pressure by 4 mmHg only in the hypertensive group (p<0.05).
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