Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000866474> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W2000866474 endingPage "S286" @default.
- W2000866474 startingPage "S286" @default.
- W2000866474 abstract "Reduced cerebral blood flow and arterial pressure may underlie reports of acute symptoms associated with post-exercise orthostatic instability. Inspiratory resistance (IR) increases arterial pressure and cerebral blood velocity (CBV) in supine humans, and increases CBV oscillations while reducing symptoms of orthostatic instability induced by a squat-stand test. PURPOSE: To test the hypothesis that inspiratory resistance limits reductions of CBV and arterial pressure, and increases oscillations of CBV during standing after cycle exercise. METHODS: On two separate occasions, we recorded the ECG, beat-by-beat finger arterial pressure, and CBV (transcranial Doppler ultrasound) in 10 healthy subjects (4 male, 6 female; age 24 ± 1 yr; height 174 ± 4 cm; weight 72 ± 3 kg) . Following a standing baseline, subjects cycled at 75% of their estimated maximum heart rate for 5 min. After exercise they stood for an additional 5 min while breathing with no IR (0 mmHg), or with -7 mmHg IR (randomized). Data were analyzed in both time and frequency (Fourier transform) domains. RESULTS: Compared with baseline, exercise increased mean arterial pressure (MAP) by 22%, and mean cerebral blood velocity (CBVmean) by 10% (both p<0.001). Both MAP and CBVmean fell upon standing but were not different from baseline. Breathing with IR did not alter MAP or CBVmean reductions during standing (p>0.05), but increased respiratory frequency (0.15 to 0.4 Hz) oscillations of CBVmean from 2.6 ± 0.5 to 10.1 ± 2.2 cm/s2 (p=0.003). None of the subjects studied reported symptoms of orthostatic instability under both control and IR conditions. CONCLUSION: Although arterial pressure and CBV fall acutely after cycle exercise, the absence of an IR effect on MAP was associated with no hypotension during postexercise standing. We confirm that IR increases CBV oscillations. This increase in CBV oscillations may provide a protective effect to individuals who are susceptible to symptoms associated with post-exercise orthostatic instability." @default.
- W2000866474 created "2016-06-24" @default.
- W2000866474 creator A5012591267 @default.
- W2000866474 creator A5023636382 @default.
- W2000866474 creator A5029164198 @default.
- W2000866474 creator A5058743601 @default.
- W2000866474 creator A5082192580 @default.
- W2000866474 creator A5085674428 @default.
- W2000866474 creator A5089261354 @default.
- W2000866474 date "2008-05-01" @default.
- W2000866474 modified "2023-09-23" @default.
- W2000866474 title "Inspiratory Resistance Increases Cerebral Blood Velocity Oscillations During Standing After Exercise" @default.
- W2000866474 doi "https://doi.org/10.1249/01.mss.0000323158.66532.3d" @default.
- W2000866474 hasPublicationYear "2008" @default.
- W2000866474 type Work @default.
- W2000866474 sameAs 2000866474 @default.
- W2000866474 citedByCount "0" @default.
- W2000866474 crossrefType "journal-article" @default.
- W2000866474 hasAuthorship W2000866474A5012591267 @default.
- W2000866474 hasAuthorship W2000866474A5023636382 @default.
- W2000866474 hasAuthorship W2000866474A5029164198 @default.
- W2000866474 hasAuthorship W2000866474A5058743601 @default.
- W2000866474 hasAuthorship W2000866474A5082192580 @default.
- W2000866474 hasAuthorship W2000866474A5085674428 @default.
- W2000866474 hasAuthorship W2000866474A5089261354 @default.
- W2000866474 hasBestOaLocation W20008664741 @default.
- W2000866474 hasConcept C111774379 @default.
- W2000866474 hasConcept C125567185 @default.
- W2000866474 hasConcept C126322002 @default.
- W2000866474 hasConcept C157767197 @default.
- W2000866474 hasConcept C164705383 @default.
- W2000866474 hasConcept C191616109 @default.
- W2000866474 hasConcept C2776452961 @default.
- W2000866474 hasConcept C2777953023 @default.
- W2000866474 hasConcept C42219234 @default.
- W2000866474 hasConcept C71924100 @default.
- W2000866474 hasConcept C73787029 @default.
- W2000866474 hasConcept C84359808 @default.
- W2000866474 hasConcept C84393581 @default.
- W2000866474 hasConceptScore W2000866474C111774379 @default.
- W2000866474 hasConceptScore W2000866474C125567185 @default.
- W2000866474 hasConceptScore W2000866474C126322002 @default.
- W2000866474 hasConceptScore W2000866474C157767197 @default.
- W2000866474 hasConceptScore W2000866474C164705383 @default.
- W2000866474 hasConceptScore W2000866474C191616109 @default.
- W2000866474 hasConceptScore W2000866474C2776452961 @default.
- W2000866474 hasConceptScore W2000866474C2777953023 @default.
- W2000866474 hasConceptScore W2000866474C42219234 @default.
- W2000866474 hasConceptScore W2000866474C71924100 @default.
- W2000866474 hasConceptScore W2000866474C73787029 @default.
- W2000866474 hasConceptScore W2000866474C84359808 @default.
- W2000866474 hasConceptScore W2000866474C84393581 @default.
- W2000866474 hasIssue "5" @default.
- W2000866474 hasLocation W20008664741 @default.
- W2000866474 hasOpenAccess W2000866474 @default.
- W2000866474 hasPrimaryLocation W20008664741 @default.
- W2000866474 hasRelatedWork W2000866474 @default.
- W2000866474 hasRelatedWork W2007846180 @default.
- W2000866474 hasRelatedWork W2152513132 @default.
- W2000866474 hasRelatedWork W2361660329 @default.
- W2000866474 hasRelatedWork W3038858045 @default.
- W2000866474 hasRelatedWork W3148350468 @default.
- W2000866474 hasRelatedWork W4220762129 @default.
- W2000866474 hasRelatedWork W640968976 @default.
- W2000866474 hasRelatedWork W73303660 @default.
- W2000866474 hasRelatedWork W2185066986 @default.
- W2000866474 hasVolume "40" @default.
- W2000866474 isParatext "false" @default.
- W2000866474 isRetracted "false" @default.
- W2000866474 magId "2000866474" @default.
- W2000866474 workType "article" @default.