#520: How Exercise Impacts Appetite, Food Intake and Adiposity – James Dorling, PhD
Sigma Nutrition Radio
Danny Lennon
4.8 • 633 Ratings
🗓️ 30 April 2024
⏱️ 49 minutes
🧾️ Download transcript
Summary
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About This Episode:
Have you ever wondered how exercise affects our appetite and energy intake? While we know that single bouts of exercise can create a short-term energy deficit, do they also influence our hunger levels? And what about long-term exercise training? Could it modify our appetite in ways that help us better control our weight?
Recent research suggests that exercise may indeed play a role in appetite regulation. Could exercise modify the subjective and homeostatic mediators of appetite in ways that enhance our feelings of fullness after a meal?
One of the most fascinating aspects of this research is the variability in responses between individuals. Why do some people experience changes in appetite and energy intake after exercise, while others don't? Could factors like adiposity, sex, or habitual physical activity levels play a role?
In this episode, Dr. James Dorling of the University of Glasgow helps us delve into the evidence surrounding how factors like adiposity, sex, and habitual physical activity modulate our responses to exercise in terms of appetite, energy intake, and appetite-related hormone responses.
About The Guest:
Dr. James Dorling is a lecturer in Human Nutrition at the University of Glasgow. Dr. Dorling's research is broadly focused on three areas: (1) the impact of nutrition and physical activity interventions on obesity-related endpoints and biomarkers of aging; (2) the regulators of appetite and eating behaviours; and (3) the changes in appetite and eating behaviours in response to health interventions.
During his PhD, he studied the effects of acute exercise and obesity-related single nucleotide polymorphisms on appetite and appetite-related hormones. Following this, Dr. Dorling joined Pennington Biomedical Research Center where he worked as a postdoctoral researcher. His postdoctoral research principally focussed on the influence of calorie restriction and physical activity on weight, markers of aging, and eating behaviours.
Transcript
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| 0:00.0 | Hello and welcome to Sigma Nutrition Radio. This is episode 520 of the podcast. I'm your host, |
| 0:20.3 | Danny Lennon, and you are very welcome to the show. |
| 0:23.8 | Today we're going to be talking with Dr. James Dorling, who is a lecturer in human nutrition |
| 0:29.4 | at the University of Glasgow currently, and his research focuses on a range of different areas, |
| 0:35.6 | but primarily we're going to be focusing in on his work that |
| 0:38.4 | looks at changes in appetite and eating behaviors in response to various health interventions, |
| 0:44.8 | most notably exercise and physical activity. So we're going to be considering how exercise |
| 0:50.5 | and engaging in exercise interventions impacts appetite, appetite-related hormones, |
| 0:57.6 | food intake, and therefore some outcomes related to adiposity and risk of obesity, etc. |
| 1:04.4 | Or how all this stuff interlinks. |
| 1:06.4 | And this has been a focus of Dr. Dornings work for a while. |
| 1:10.1 | And previous to being at the University |
| 1:11.7 | of Glasgow, he was part of the team at Pennington Biomedical Research Center, where he was |
| 1:15.7 | doing his postdoc, involved with a number of cool trials there, some of which we've discussed |
| 1:20.2 | on this podcast before. So I think back in episode 498, we talked about the Propel trial |
| 1:25.7 | that was done by the group at Pennington, of which Dr. |
| 1:29.6 | Dorling was involved with. So we're going to be getting into a lot of the cool stuff here |
| 1:33.9 | related to exercise, how it impacts appetite, those hormones, some of food intake, behaviors, |
| 1:40.4 | and then some of the factors that modify that response to exercise. So notably, when we |
| 1:46.0 | see across interventions, this wide variation between people in how they respond to an exercise |
| 1:52.5 | intervention, particularly when it comes to interventions that are aiming to cause weight loss, |
| 1:58.5 | for example, through increasing levels of exercise. |
... |
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