Key result
Rowing induced marked fluctuations in cardiac stroke volume, which decreased by 27% at the beginning of the stroke and increased by 25% during recovery (P=0.013).
Why the study?
Rowing may limit cardiac preload and induce large fluctuations in stroke volume because blood pressure and central venous pressure increase when force is applied to the oar.
How does stroke volume fluctuate during the rowing stroke in competitive oarsmen?
Population
Eight nationally competitive oarsmen
Comparison
Rowing on an ergometer at targeted heart rates of 130 vs 160 beats per minute
Design
Physiological study
Authors
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SV fluctuations may confound hemodynamic monitoring in rowers; leaves open effects on performance or cardiac adaptation.
Observational (n=8)
How does stroke volume fluctuate during the rowing stroke in competitive oarsmen?
p-value: p=0.013
During rowing, cardiac output depends critically on stroke volume surges during the recovery phase of the stroke due to significant fluctuations in preload.
Sejersen et al. (2020) conducted an observational in Healthy oarsmen (n=8). Rowing on an ergometer was evaluated on Stroke volume (SV) fluctuations during the rowing stroke (p=0.013). Rowing induced marked fluctuations in cardiac stroke volume, which decreased by 27% at the beginning of the stroke and increased by 25% during recovery (P=0.013).
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