Compression garments do not alter cerebrovascular responses to orthostatic stress after mild passive heating
Morrison SA, Ainslie PN, Lucas RA, Cheung SS, Cotter JD
Scandinavian journal of medicine & science in sports · 9 citations
Review labels
Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.
How it was studied
- Design
- Randomized controlled trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Funding not disclosed
Publication
- Published
- 2012-09-12 · Scand J Med Sci Sports · vol. 24 · issue 2 · pp. 291–300
- Publisher
- Wiley
- Cited
- 13 citations · more than 69% of similar papers · 0.5× the field average
- References
- 42 works
- Access
- Paywalled
- Research areas
- Heart Rate Variability and Autonomic Control · Thermoregulation and physiological responses · High Altitude and Hypoxia
- Keywords
- Medicine, Transcranial Doppler, Supine position, Anesthesia, Blood pressure, Orthostatic vital signs, Middle cerebral artery, Compression (physics), Orthostatic intolerance, Cardiology, Internal medicine, Ischemia, Materials science
- MeSH
- middle cerebral artery, humans, syncope, hypotension, orthostatic, heat stress disorders, ultrasonography, blood flow velocity, exercise test, body temperature, protective clothing, oxygen consumption, blood pressure, cerebrovascular circulation, posture, physical fitness, adult, male, stockings, compression, hot temperature, young adult
5 authors
From SI, NZ, CA
- Shawnda A. Morrison · correspondingJožef Stefan Institute; University of Otago
- Philip Neil AinslieUniversity of British Columbia; University of British Columbia, Okanagan Campus
- Rebekah A. I. LucasUniversity of Otago
- Stephen S. CheungBrock University
- James David CotterUniversity of Otago
Abstract
Whole-body heating increases the likelihood of syncope, whereas utilizing lower-body compression garments may reduce syncope risk. We hypothesized that graded compression garments would reduce the typically observed large postural reductions in arterial blood pressure and middle cerebral artery velocity, in normothermia and especially once passively heat stressed. Fifteen men (age: 27 ± 4 years, aerobic fitness range: 30-75 mL/kg(/) min) completed a supine-to-stand orthostatic challenge for 3 min at normothermia and after passive heating (esophageal temperature, +0.5 °C from baseline) on two occasions (> 7 days): once wearing commercially available compression trousers and once wearing low-compression placebo trousers (randomized order). Blood flow velocity in the middle cerebral artery (transcranial Doppler), mean arterial blood pressure (mean BP: Finometer) and end-tidal carbon dioxide pressure were measured continuously. During normothermia, compression, garments did not alter the magnitude of the postural changes in mean BP or middle cerebral artery velocity. After passive heating, although the magnitudes of these changes were exaggerated, they were not significantly affected by compression garments. Compression garments did not attenuate the initial or sustained orthostatic hypotension associated with posture change, either during normothermia or following passive heat stress.
Abstract via Europe PMC. Copyright remains with the authors or publisher.
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