Hypohydration Increases Heart Rate Despite Preserved Hemodynamic Compensation During Blood Flow Restricted Exercise
Pignanelli C, Lydiate GC, Grigore MM, McCrone JC, Turetskiy K, Parris REJ, Bisset-Cavallin EM, Robertson AA, Gamble ASD, Millar PJ, Tymko MM, Burr JF
Scandinavian journal of medicine & science in sports · 0 citas
Cómo se estudió
- Diseño
- Ensayo clínico controlado (clasificado por nuestro filtro de IA)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
- Gobierno
- Natural Sciences and Engineering Research Council of Canada
- Subvenciones
- Natural Sciences and Engineering Research Council of Canada (03974)
Según 1 financiador declarado y la declaración de financiación del texto completo.
Publicación
- Publicado
- 2026-05-01 · Scand J Med Sci Sports · vol. 36 · número 5 · pág. e70296
- Editorial
- Wiley
- Citado
- 0 citas · más que el 38% de estudios similares · 0.0× el promedio de su campo
- Referencias
- 59 trabajos
- Acceso
- Acceso abierto (revista híbrida) · CC-BY-NC
- Áreas de investigación
- Thermoregulation and physiological responses · Cardiovascular and exercise physiology · Heart Rate Variability and Autonomic Control
- Palabras clave
- Orthostatic vital signs, Stroke volume, Heart rate, Blood pressure, Blood volume, Hemodynamics, Cardiac output, Blood flow
- MeSH
- humans, dehydration, cardiac output, stroke volume, lower body negative pressure, exercise, walking, blood volume, blood pressure, heart rate, regional blood flow, adult, female, male, hemodynamics, orthostatic intolerance, young adult, blood flow restriction therapy
12 autores
- Christopher Pignanelli🇨🇦University of Guelph
- Gavin C. Lydiate🇨🇦University of Guelph
- Monica M. Grigore🇨🇦University of Guelph
- Jenna C. McCrone🇨🇦University of Guelph
- Katrin Turetskiy🇨🇦University of Guelph
- Regan E. J. Parris🇨🇦University of Guelph
- Ella M. Bisset‐Cavallin🇨🇦University of Guelph
- Alexa A. Robertson🇨🇦University of Guelph
- Alexander SD Gamble🇮🇪🇨🇦University of Limerick; University of Guelph
- Philip J. Millar🇨🇦University of Guelph
- Mike Tymko🇨🇦University of Guelph
- Jamie F. Burr🇨🇦 · autor de correspondenciaUniversity of Guelph
Resumen
El texto original del estudio, en el idioma en que se publicó.
During blood flow restriction (BFR) exercise, blood becomes sequestered in the active limbs due to impeded venous return, contributing to central hypovolemia. Dehydration also reduces blood volume and can exacerbate the ability of the cardiovascular (CV) system to defend against CV stressors, such as exercise and orthostatic stress. As BFR becomes more widely used, its application in individuals who may be suboptimally hydrated underscores the need to understand how hydration status influences cardiovascular strain. We tested whether hypohydration affects the CV response to BFR exercise and its relationship to orthostatic tolerance. Seventeen participants (7 females) performed a lower-body negative pressure test to assess orthostatic tolerance, and a bilateral BFR walking (5 km/h at 5% incline) bout under two conditions, counterbalanced: with regular fluid consumption (Hydrated), or after 24-h of fluid restriction (Hypohydrated). Heart rate, beat-to-beat blood pressure, and thoracic impedance were continuously measured, from which stroke volume and cardiac output were estimated. Hypohydration reduced body mass (-2.3% ± 0.7%, p 0.21). Orthostatic tolerance did not differ between conditions (354 ± 179 vs. 312 ± 128 mmHg•min, p = 0.17). The preservation of stroke volume, cardiac output, and orthostatic tolerance suggests that CV compensatory mechanisms during BFR exercise remain effective under mild hypohydration with the increased heart rate resulting from the manipulation of non-vascular fluid compartments.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial (CC BY-NC).
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