WISE-2005: tibial and gastrocnemius vein and calf tissue response to LBNP after a 60-day bed rest with and without countermeasures

Journal of Applied Physiology
P ArbeilleR L Hughson

Abstract

The objective of this study was to quantify by echography the changes in the intramuscular [gastrocnemius (Gast)] and nonintramuscular [posterior tibial (Tib)] calf veins cross-sectional area (CSA) and the superficial tissue thickness (STth) in response to lower body negative pressure (LBNP) after 60-day head-down bed rest (HDBR). Twenty-four healthy women (25-40 yr) were divided into three groups: control (Con), treadmill-LBNP and flywheel (Ex-Lb), nutrition (Nut; protein supplement). All underwent a LBNP (0 and -45 mmHg) before and on day 55 of HDBR. Subjects were identified as finisher (F) or nonfinisher (NF) of a 10-min tilt test after 60 days of HDBR. There were no differences in resting CSA of the Tib and Gast veins on HDBR day 55 compared with pre-HDBR for the Ex-Lb, Con and Nut, or the F groups; however, for NF both the Tib and Gast vein CSA at rest were significantly smaller after HDBR. At -45 mmHg LBNP, Tib and Gast CSAs were not significantly different from before HDBR in all groups (Ex-Lb, Con, Nut, F, NF). However, percent change in CSA of both veins from rest to -45 mmHg LBNP was significantly greater in the Con and Nut groups compared with Ex-Lb, and also NF compared with F. Similarly, the percent increase in STt...Continue Reading

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Citations

Mar 26, 2011·European Journal of Applied Physiology·Julien BonjourGuido Ferretti
May 5, 2011·European Journal of Applied Physiology·P ArbeilleR Hughson
Jun 4, 2013·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Alessandra AdamiGuido Ferretti
Feb 28, 2009·European Journal of Applied Physiology·Patrick GuinetAlan R Hargens
Feb 9, 2017·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Martina HeerScott M Smith
Dec 8, 2017·Journal of Applied Physiology·Stephen A KlassenJ Kevin Shoemaker
Nov 17, 2009·Medicine and Science in Sports and Exercise·Suzanne M SchneiderAlan R Hargens
Sep 2, 2008·American Journal of Physiology. Heart and Circulatory Physiology·P ArbeilleR Hughson
May 4, 2012·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Federico AlettiRichard L Hughson

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