SNR #189: Katy Horner, PhD - Gut Hormones, Gastric Emptying & Appetite Regulation

Sigma Nutrition Radio

Danny Lennon

Sigma, Dietetics, Evidencebased, Nutrition, Training, Health & Fitness, Science, Diet, Fitness, Evidence, Bodybuilding, Health

4.8 • 626 Ratings

🗓️ 25 July 2017

⏱️ 44 minutes

🔗️ Recording | iTunes | RSS

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Summary

Katy joined the School of Public Health, Physiotherapy and Sport Sciences at UCD as a lecturer in Sport and Exercise Science in 2017. Katy holds a BSc and MSc in Sport and Exercise Science, both from the University of Limerick, and a PhD in Exercise and Nutrition Sciences from Queensland University of Technology, Australia. She subsequently completed postdoctoral studies in childhood obesity and physical activity at the Children’s Hospital of Pittsburgh, USA and more recently in the Nutrition, Biomarkers and Health Research Group at UCD as part of Food for Health Ireland.

Her research draws on this interdisciplinary background, particularly in terms of trying to make connections across exercise physiology, metabolism and nutrition science. She has published articles on appetite control, gut and exercise physiology in a range of journals across the fields of sports medicine, exercise science, metabolism, obesity and nutrition. Her interest in applied sport and exercise science centres on nutritional advice and exercise prescription for both athletes to optimise performance and to a wide range of other individuals to optimise wellbeing and metabolic health. Katy is also a trained phlebotomist and registered nutritionist (with specialisms in nutrition science and sport/exercise), and currently works with the Ad Astra elite athlete support team at UCD.

In This Episode We Discuss:

What you should know about gut peptide hormones (GLP-1, ghrelin, peptide YY)
Does the dysregulation of appetite hormones drive excess caloric intake and hence excess bodyfat accumulation, or is it excess bodyfat accumulation that drives hormonal dsyregulation?
The effects of exercise interventions on these appetite-related gut peptides
Active and inactive men differ in processes of food reward
Habitual exercise could contribute to weight management by altering processes of food reward via the gut-brain axis
What is gastic emptying and how do we measure it?
Do people who exercise compensate for the increase in energy expenditure via compensatory increases in hunger and food intake?
Implications of gastric emptying on exercise performance

Transcript

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0:00.0	And he found that those with higher levels of energy expenditure were better able to match their energy intake to their energy expenditure than those in the more sedentary occupations like the office clerks.
0:22.8	And in that kind of sedentary range, we saw an actual, in some case, an increase in
0:28.3	energy intake. So Professor John Plundell termed this sedentary range, the zone of
0:36.1	dysregulation,
0:43.0	where it's likely that other factors are more likely to influence food intake rather than the homeostatic factors or physiological factors.
1:05.3	... Hello and welcome to another episode of Sigma Nutrition Radio.
1:12.3	My name is Danny Lennon and we are at episode 189 of the podcast today.
1:15.8	And just before we get started, a few notes for you.
1:21.9	Again, as I mentioned last week, those you who are interested in doing an online nutrition certification,
1:30.4	where out the end you can become an insured nutritionist and all the course content is based on evidence-based information. The Mac Nutrition Uni course is the one that I always recommend to people.
1:36.4	An enrollment for their next intake, which I believe start from September, is now open.
1:41.4	So for the next two weeks, enrollment is still open.
1:45.8	And as a Sigma Nutrition Radio listener, you can also get a discount off your enrollment fee. So I've put together all the
1:50.6	course details, some frequently asked questions and information about that discount for you over
1:56.5	at Sigma Nutrition.com slash MNU. So if you go to Sigma Nutrition.com slash MNU, that will give you all the details about the MACnutrition.com slash mnU. So you go to sigma nutrition.com slash mnU.
2:02.5	That will give you all the details about the Mac Nutrition Uni course and essentially
2:07.0	show you why I have so much faith in it and why it's my default recommendation for
2:11.5	anyone looking for an online nutrition course.
2:15.2	On to today's episode and I'm delighted to be able to bring you a
2:19.7	conversation I had with Dr. Katie Horner of University College Dublin. So recently I went to
2:25.6	University College Dublin to sit down and discuss some of Katie's work with her that she's been
2:31.1	doing over the past number of years on a couple of areas that I think
	...

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