ArticleEuropean journal of applied physiology2017
Dynamics of the RR-interval versus blood pressure relationship at exercise onset in humans.
Article in European journal of applied physiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Baroreflex dynamics during the rest to exercise transient in acute normobaric hypoxia in humans.European journal of applied physiology · 2024Article
- Peculiarities of cardio-respiratory relationships in qualified athletes with different types of heart rhythm regulation according to respiratory maneuver data.Frontiers in sports and active living · 2024Article
- Cardiorespiratory dynamics during respiratory maneuver in athletes.Frontiers in network physiology · 2023Article
- Dynamics of cardiovascular and baroreflex readjustments during a light-to-moderate exercise transient in humans.European journal of applied physiology · 2022Article
- A century of exercise physiology: key concepts on coupling respiratory oxygen flow to muscle energy demand during exercise.European journal of applied physiology · 2022Review
- Cardiovascular response to postural perturbations of different intensities in healthy young adults.Physiological reports · 2022Article
- Vagal blockade suppresses the phase I heart rate response but not the phase I cardiac output response at exercise onset in humans.European journal of applied physiology · 2021Article
- Baroreflex responses during dry resting and exercise apnoeas in air and pure oxygen.European journal of applied physiology · 2021Article
- Obstructive and Central Sleep Apnea in First Ever Ischemic Stroke are Associated with Different Time Course and Autonomic Activation.Nature and science of sleep · 2021Article
- Effect of Lower Body Negative Pressure on Phase I Cardiovascular Responses at Exercise Onset.International journal of sports medicine · 2020Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe dynamics of the postulated phenomenon of exercise baroreflex resetting is poorly understood, but can be investigated using closed-loop procedures. To shed light on some mechanisms and temporal relationships participating in the resetting process, we studied the time course of the relationship between the R-R interval (RRi) and arterial pressure with a closed-loop approach.
methodsOn ten young volunteers at rest and during light exercise in supine and upright position, we continuously determined, on single-beat basis, RRi (electrocardiography), and arterial pressure (non-invasive finger pressure cuff). From pulse pressure profiles, we determined cardiac output (CO) by Modelflow, computed mean arterial pressure (MAP), and calculated total peripheral resistance (TPR).
resultsAt exercise start, RRi was lower than in quiet rest. As exercise started, MAP fell to a minimum (MAP
conclusionThese results suggest that, initially, the MAP fall was corrected by a RRi reduction along a baroreflex curve, with lower sensitivity than at rest, but eventually in the same pressure range as at rest. After attainment of MAP
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