Výsledky vyhledávání - "J. T. Lightfoot"

Presyncope caused by central hypovolaemia is not preceded by evoked potential alterations

Autor: J. T. Lightfoot, S. Biswijit, Daniel F. Hanley, Nitish V. Thakor

Publikováno v: Clinical Physiology. 12:267-275

The mechanism(s) responsible for the onset of presyncope during a central hypovolaemic challenge have gone undefined for many years. It has been speculated that a decrease in cerebral blood flow initiates presyncopal responses, which in turn lead to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a87277011961c08aa876743b6138b619
https://doi.org/10.1111/j.1475-097x.1992.tb00832.x

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A different method of teaching peer review systems

Autor: J T Lightfoot

Publikováno v: The American journal of physiology. 274(6 Pt 2)

Students often have difficulty grasping the advantages of the various peer review systems used in scientific publishing. In the described exercise, students are assigned a current study and then write three two-page critiques of the article. The thre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d4083705c39c1e4e4855545d263107f
https://pubmed.ncbi.nlm.nih.gov/9841565

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Ambient noise interferes with auscultatory blood pressure measurement during exercise

Autor: Dale Williams, J T Lightfoot, Betty Tuller

Publikováno v: Medicine and science in sports and exercise. 28(4)

This study was designed to investigate whether the acoustical characteristics of the Korotkoff sounds (K-sounds) were altered during exercise and/or masked by the ambient noise. After signing informed consent, 11 subjects (8 females, 3 males; 27 +/-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0afc91d1affa598eed9a8e21da493be1
https://pubmed.ncbi.nlm.nih.gov/8778557

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Quantification of tolerance to lower body negative pressure in a healthy population

Autor: J T, Lightfoot, K M, Tsintgiras

Publikováno v: Medicine and science in sports and exercise. 27(5)

Subtolerance and presyncopal lower body negative pressure (LBNP) has been used extensively to investigate the effect of various forms of exercise training on central hypovolemic tolerance. However, there are no population data concerning LBNP toleran

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::e7a79fca666c9386ee1679414c0cc216
https://pubmed.ncbi.nlm.nih.gov/7674874

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Occurrence of presyncope in subjects without ventricular innervation

Autor: S. M. Fortney, J. T. Lightfoot, Stuart Rowe

Publikováno v: Clinical science (London, England : 1979). 85(6)

1. To determine whether activation of the left ventricular C-fibre mechanoreceptors initiates the vasodepressor reflex that often causes syncope, we exposed six orthotopic cardiac transplant patients and six matched, healthy control subjects to progr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76a6152dcd55e4b448e29bcb45aa4e77
https://pubmed.ncbi.nlm.nih.gov/8287661

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Cardiovascular responses to lower body negative pressure in trained and untrained older men

Autor: Gary Gerstenblith, Frances C. O'Connor, D. Drinkwater, J. F. Clulow, L. C. Becker, Clarke G. Tankersley, Jerome L. Fleg, Edward G. Lakatta, Suzanne M. Fortney, J. T. Lightfoot

Publikováno v: Journal of applied physiology (Bethesda, Md. : 1985). 73(6)

To determine whether aerobic conditioning alters the orthostatic responses of older subjects, cardiovascular performance was monitored during graded lower body negative pressure in nine highly trained male senior athletes (A) aged 59–73 yr [maximum

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4926e340bfb5d65929c6c6a884eee323
https://pubmed.ncbi.nlm.nih.gov/1490987

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Resistance training increases lower body negative pressure tolerance

Autor: M. J. Turner, D. J. Torok, T. W. Journell, J T Lightfoot, Randal P. Claytor

Publikováno v: Medicine and Science in Sports and Exercise. 26:1003

This study investigated whether whole body resistance training would increase tolerance to lower body negative pressure (LBNP). Twelve males (age = 19.6 +/- 0.4 yr; mean +/- SD) underwent an acute, 12-wk program of upper and lower body resistance tra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::db3922539fbe5b81e24b2e1b7d094d39
https://doi.org/10.1249/00005768-199408000-00012

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