ArticleEuropean journal of applied physiology2022
Dynamics of cardiovascular and baroreflex readjustments during a light-to-moderate exercise transient in humans.
Article in European journal of applied physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed, 3 citations in OpenAlex.
- Baroreflex dynamics during the rest to exercise transient in acute normobaric hypoxia in humans.European journal of applied physiology · 2024Article
- Assessment of baroreflex sensitivity during isometric handgrip exercise and oscillatory lower body negative pressure.Journal of Taibah University Medical Sciences · 2023Article
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
Abstract
purposeWe hypothesised that, during a light-to-moderate exercise transient, compared to an equivalent rest-to-exercise transient, (1) a further baroreflex sensitivity (BRS) decrease would be slower, (2) no rapid heart rate (HR) response would occur, and (3) the rapid cardiac output (CO) response would have a smaller amplitude (A1). Hence, we analysed the dynamics of arterial baroreflexes and the HR and CO kinetics during rest-to-50 W (0-50 W) and 50-to-100 W (50-100 W) exercise transients.
methods10 subjects performed three 0-50 W and three 50-100 W on a cycle ergometer. We recorded arterial blood pressure profiles (photo-plethysmography) and R-to-R interval (RRi, electrocardiography). The former were analysed to obtain beat-by-beat mean arterial pressure (MAP) and stroke volume (SV). CO was calculated as SV times HR. BRS was measured by modified sequence method.
resultsDuring 0-50 W, MAP transiently fell (- 9.0 ± 5.7 mmHg, p < 0.01) and BRS passed from 15.0 ± 3.7 at rest to 7.3 ± 2.4 ms mmHg
conclusionDuring 50-100 W, with respect to 0-50 W, BRS decreased more slowly, in absence of a prompt pressure decrease. BRS decrease and rapid HR response in 50-100 W were unexpected and ascribed to possible persistence of some vagal tone at 50 W.
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