title: Reflex venomotor responses to lower body negative pressure following endurance training.
abstract: The effect of endurance training on reflex venomotor control during an orthostatic challenge was investigated in 11 sedentary male volunteers. An exercise (E) group (n = 6) underwent 12 weeks of endurance exercise training, whereas a control (C) group (n = 5) remained sedentary. Training significantly increased VO2max values in E (pre-training: 37.0 +/- 2.5 ml.kg-1.min-1; post training: 44.6 +/- 2.5 ml.kg-1.min-1), while C showed no significant change. During exposures to two levels of lower body negative pressure (-10 and -40 mm Hg), both C and E groups showed similar graded decreases in forearm venous volume (FVV). The magnitude of the FVV decreases did not differ between groups or when comparing pre-training and post-training values. We conclude that the reflex venoconstrictor response to LBNP was not affected by endurance training.
authors.affiliation: Department of Physical Education, University of New Hampshire, Durham, NH.
authors.forename: N B
authors.initials: NB
authors.lastname: Vroman
authors.forename: J A
authors.initials: JA
authors.lastname: Healy
authors.forename: R
authors.initials: R
authors.lastname: Kertzer
mesh_terms: D000328:Adult; D003664:Decompression; D015444:Exercise / Q000502:physiology*; D005542:Forearm / Q000098:blood supply; D006801:Humans; D008150:Lower Body Negative Pressure; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology; D010806:Physical Education and Training; D010807:Physical Endurance / Q000502:physiology; D012018:Reflex / Q000502:physiology*; D014655:Vascular Resistance / Q000502:physiology*; D014661:Vasoconstriction; D014680:Veins / Q000502:physiology*