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Clinical Trial Summary

Arterial dysfunction contributes to the development of cardiovascular disease (CVD), which is currently afflicting millions of individuals. The use of the amino acid L-citrulline has been suggested as a potential aid for the treatment of CVD by increasing endothelial production of Nitric Oxide (NO). Whole body vibration (WBV) is new and effective form of exercise that is feasible for clinical populations and has been proven to decrease blood pressure (BP) and arterial stiffness and increase muscle mass and strength. Therefore, the purpose of this study was to investigate if the combination of WBV training (WBVT) plus L-citrulline supplementation would induce positive additive effects and would be an effective means to ameliorate arterial stiffness, endothelial function, BP and muscle strength/mass in postmenopausal women.


Clinical Trial Description

The purpose of this study is to investigate the effects of 8 weeks combination of WBVT plus L-citrulline supplementation on arterial stiffness, endothelial function, BP and muscle strength/mass in overweight/obese postmenopausal women.

The specific aims of the study are:

1. To investigate if the additive effect of 8 weeks of WBVT combined with L-citrulline supplementation are more efficacious than either treatment alone in ameliorating cardiovascular disease risk factors by assessing arterial stiffness (aortic, systemic, and leg), aortic BP and wave reflection, and autonomic function (heart rate variability, vascular sympathetic activity [low-frequency power of systolic BP variability], and baroreflex sensitivity). Flow mediated dilation and circulating levels of adipocytokines (adiponectin and leptin) and endothelial-derived vasodilators (NO metabolites [NOx], 6-keto PGFIa, insulin, and ghrelin) and vasoconstrictors (endothelin-1 [ET-1],8-iso PGF2a,vascular endothelium growth factor [VGEF]) will be assessed as secondary outcome variables.

2. To evaluate the extent to which 8 weeks of WBVT combined with L-citrulline improves body composition assessed by changes in fat mass and lean mass using dual-energy x-ray absorptiometry and waist circumference.

3. To determine the additive effect of 8 weeks of WBVT combined with L-citrulline supplementation on muscle strength. These will be evaluated using the eight-repetition maximum test for the leg press and chest press exercises ;


Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Basic Science


Related Conditions & MeSH terms


NCT number NCT02143817
Study type Interventional
Source Florida State University
Contact
Status Completed
Phase N/A
Start date March 2013
Completion date January 2014

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