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School of Sport Health and Applied Science Research Seminar

Date:
Wednesday 25 November 2015

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Date: Wednesday 25th November, 1pm Location: N Block Lecture Theatre, St Mary's University

Dr Chris Easton, University of the West of Scotland

A Bright Outlook for Exercise in the Sunshine?

Abstract:
Nitric oxide (NO) is a cellular signalling molecule which has multiple biological actions including the regulation of vascular function. We, and others, have shown that ingestion of nitrate-rich foods can increase circulating levels of NO metabolites which can have consequent beneficial effects on markers of cardiovascular health and exercise performance (Muggeridge et al. 2014). There is also emerging evidence that exposure to sunlight, specifically ultra-violet-A light (UV-A)), causes NO metabolites to be released from stores in the skin. These experiments also demonstrated that UV-A exposure caused a marked reduction in blood pressure, likely due to an increased NO availability (Lui et al. 2014). We know that these responses are not linked to Vitamin D which is produced from light of a different wavelength (UV-B). Some initial work from our lab (Muggeridge et al. 2015) now suggests that both the ergogenic and cardiovascular effects resulting from nitrate ingestion or UV-A exposure can be augmented when the methods are used in combination. This presents the intriguing argument that it may not be just what you eat that is important, but where you eat it.

This research seminar will summarise the key points from existing research on NO metabolism in the contexts of exercise and health. There will be a specific focus on the apparent individual variability in the response to dietary nitrate supplementation and whether pre-experimental environmental conditions may be partly responsible for these findings. The seminar will also attempt to answer the question of whether sunshine really can be an ergogenic aid or indeed a viable treatment option for hypertension. The presentation will include some unpublished findings from recently completed and ongoing research work from the Exercise, Nutrition, and Environment Research Group (ENER-G) at the University of the West of Scotland.

Tea, Coffee and Biscuits available, all welcome

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Date:
Wednesday 25 November 2015

Find out more

For more information about this event please email conferences@stmarys.ac.uk or call 020 8240 8219.

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