Key result
Valsalva manoeuvres at 50% maximum expiratory pressure elicited significantly higher Phase II heart rate (39.9 vs 24.5 bpm) and systolic blood pressure (43.6 vs 35.3 mm Hg) than at 30%.
Why the study?
The study was designed to establish the effect of intensity of effort during the Valsalva manoeuvre on blood pressure and heart rate responses.
Does higher intensity of effort during Valsalva's manoeuvre increase blood pressure and heart rate responses in powerlifters and controls?
Cross-Sectional (n=14)
Does higher intensity of effort during Valsalva's manoeuvre increase blood pressure and heart rate responses in powerlifters and controls?
Absolute Event Rate: 39.9% vs 24.5%
Heart rate and blood pressure responses during Phase II of the Valsalva manoeuvre are dependent on the relative intensity of the effort, with higher responses in powerlifters attributed to higher absolute expiratory pressures.
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May heighten hemodynamic stress during heavy straining; extends dose-response data on VM intensity in trained individuals.
Drury et al. (2022) reported a cross-sectional. Valsalva manoeuvre at 50% maximum expiratory pressure vs. Valsalva manoeuvre at 30% maximum expiratory pressure was evaluated on Phase II heart rate response (bpm). Valsalva manoeuvres at 50% maximum expiratory pressure elicited significantly higher Phase II heart rate (39.9 vs 24.5 bpm) and systolic blood pressure (43.6 vs 35.3 mm Hg) than at 30%.
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