Resveratrol (RSV) is a natural compound that improves mitochondrial function and metabolic health in animal models. Thus far, RSV’s effects on metabolic outcomes in humans are controversial, and RSV’s acute mechanism has not yet been confirmed in vivo. This study aimed to evaluate the effect of an acute dose of RSV on insulin sensitivity and fatty acid oxidation, and to determine RSV’s mechanism of action in human skeletal muscle and adipose tissue. Overweight males (n=8; BMI, 30.5±3.6; VO2peak, 34.0±7.3 ml/kg) reported to the lab on 2 occasions and were provided a breakfast supplemented with 0.3g of RSV or a placebo pill. Experiments were performed in random order using a double blind crossover design. Gas exchange measures, blood samples, and skeletal muscle and adipose tissue biopsies were obtained before and 2 hours after the supplement meal. RSV acutely improved insulin sensitivity, but had no effect on fatty acid oxidation. Additionally, RSV supplementation had no effect on the intracellular signaling of key proteins proposed to mediate its effects in skeletal muscle and adipose tissue. Taken together, these results suggest a single dose of RSV can acutely enhance insulin sensitivity, but its mechanism of action is not conserved across species, and its intracellular signaling pathway is different in humans than previously thought. Due to its insulin sensitizing effect, RSV retains its clinical value, but further research is required to determine its most useful application for human metabolic health. / Thesis (Master, Kinesiology & Health Studies) -- Queen's University, 2013-06-06 13:30:03.522
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:OKQ.1974/8069 |
| Date | 06 June 2013 |
| Creators | WILLIAMS, CAMERON |
| Contributors | Queen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.)) |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English, English |
| Detected Language | English |
| Type | Thesis |
| Rights | This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner. |
| Relation | Canadian theses |
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