Fluctuations in cardiac stroke volume during rowing
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Fluctuations in cardiac stroke volume during rowing. / Sejersen, Casper; Fischer, Mads; Mattos, João D; Volianitis, Stefanos; Secher, Niels H.
In: Scandinavian Journal of Medicine & Science in Sports, Vol. 31, No. 4, 2021, p. 790-798.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Fluctuations in cardiac stroke volume during rowing
AU - Sejersen, Casper
AU - Fischer, Mads
AU - Mattos, João D
AU - Volianitis, Stefanos
AU - Secher, Niels H.
N1 - CURIS 2021 NEXS 103
PY - 2021
Y1 - 2021
N2 - Preload to the heart may be limited during rowing because both blood pressure and central venous pressure increase when force is applied to the oar. Considering that only the recovery phase of the rowing stroke allows for unhindered venous return, rowing may induce large fluctuations in stroke volume (SV). Thus, the purpose of this study was to evaluate SV continuously during the rowing stroke. Eight nationally competitive oarsmen (mean ± SD: age 21 ± 2 years, height 190 ± 9 cm, and weight 90 ± 10 kg) rowed on an ergometer at a targeted heart rate of 130 and 160 beats per minute. SV was derived from arterial pressure waveform by pulse contour analysis, while ventilation and force on the handle were measured. Mean arterial pressure was elevated during the stroke at both work rates (to 133 ± 10 (P <0.001) and 145 ± 11 mmHg (P = 0.024), respectively). Also, SV fluctuated markedly during the stroke with deviations being largest at the higher work rate. Thus, SV decreased by 27 ± 10% (31 ± 11 mL) at the beginning of the stroke and increased by 25 ± 9% (28 ± 10 mL) in the recovery (P = 0.013), while breathing was entrained with one breath during the drive of the stroke and one prior to the next stroke. These observations indicate that during rowing cardiac output depends critically on SV surges during the recovery phase of the stroke.
AB - Preload to the heart may be limited during rowing because both blood pressure and central venous pressure increase when force is applied to the oar. Considering that only the recovery phase of the rowing stroke allows for unhindered venous return, rowing may induce large fluctuations in stroke volume (SV). Thus, the purpose of this study was to evaluate SV continuously during the rowing stroke. Eight nationally competitive oarsmen (mean ± SD: age 21 ± 2 years, height 190 ± 9 cm, and weight 90 ± 10 kg) rowed on an ergometer at a targeted heart rate of 130 and 160 beats per minute. SV was derived from arterial pressure waveform by pulse contour analysis, while ventilation and force on the handle were measured. Mean arterial pressure was elevated during the stroke at both work rates (to 133 ± 10 (P <0.001) and 145 ± 11 mmHg (P = 0.024), respectively). Also, SV fluctuated markedly during the stroke with deviations being largest at the higher work rate. Thus, SV decreased by 27 ± 10% (31 ± 11 mL) at the beginning of the stroke and increased by 25 ± 9% (28 ± 10 mL) in the recovery (P = 0.013), while breathing was entrained with one breath during the drive of the stroke and one prior to the next stroke. These observations indicate that during rowing cardiac output depends critically on SV surges during the recovery phase of the stroke.
KW - Arterial blood pressure
KW - Breathing
KW - Cardiac output
KW - Ergometer rowing
KW - Submaximal exercise
U2 - 10.1111/sms.13901
DO - 10.1111/sms.13901
M3 - Journal article
C2 - 33280195
VL - 31
SP - 790
EP - 798
JO - Scandinavian Journal of Medicine & Science in Sports
JF - Scandinavian Journal of Medicine & Science in Sports
SN - 0905-7188
IS - 4
ER -
ID: 252644846