#278: Jackson Peos, PhD – The ICECAP Trial, Intermittent Energy Restriction & the Science of Diet Breaks

Sigma Nutrition Radio

Danny Lennon

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

4.8 • 626 Ratings

🗓️ 16 April 2019

⏱️ 79 minutes

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Summary

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About This Episode:

Jackson Peos, PhD was the lead researcher on the ICECAP trial (Intermittent versus Continuous Energy restriction Compared in an Athlete Population), looks at the effect of including a “diet break” week after every 3 weeks of dieting, compared to a continuous hypocaloric diet for the duration of the full dieting period.

In This Episode We Discuss:
- Theoretical reasons for including diet breaks and refeeds within dieting periods
- Distinguishing between intermittent fasting protocols and intermittent moderate energy restriction (MOD-IER)
- Lessons learned from the MATADOR trial
- What might differ between obese and athletic populations
- Design of Jackson’s “ICECAP trial”
- Determining the duration, frequency and magnitude of diet breaks, refeeds and energy restriction
- Current best practices for implementing these strategies

Transcript

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0:00.0	Now, if we contrast that to an intermittent diet, which we break up the dieting phase into
0:12.3	dieting blocks and sort of higher feeding blocks.
0:14.9	So this can be with a refeed or a diet rate.
0:16.8	So let's say with a model that I'm testing currently at the moment, which alternates three weeks of dieting with a one week diet break.
0:25.3	Now let's say that we also gave someone in an intermittent diet 12 weeks of dieting that they had to complete, but after every three weeks they got a one week diet break.
0:34.4	Even if they're feeling pretty crap by maybe the start of week three,
0:37.9	they might just be able to go, well, I've only got seven deficit days ahead of me. I can probably
0:43.2	hang on here because I know that I've got an increase in calories coming. Hello and welcome to another episode of Sigmund Nutrition Radio.
1:05.8	As always, I'm your host, Danny Lennon.
1:08.4	We're at episode 278 of the podcast today. And a quick announcement
1:14.1	before we get into today's discussion, for those of you who can make it to Dublin this July
1:20.9	2019, I have two brand new seminars which are going to be taking place in mid to late July.
1:29.1	Details are out now and tickets are available and on sale. The first of those seminars takes place on the 20th of July in
1:34.1	Dublin. It's titled Nutrition for Health Enhancement. And we're going to be discussing all sorts of
1:40.4	different topics that relate for how nutrition plays a role specifically for health.
1:46.0	So going beyond some of the body composition stuff discussed in previous years, and this time really dialing into
1:52.0	when we're not discussing body composition, how nutrition decisions make a direct impact on health.
1:59.0	We're going to get into some of the literature around time
2:01.5	restricted feeding, circadian biology, non-diet approaches, how we should view things like nutrition
2:10.2	and its impact on blood lipids and blood glucose, nutrition and older adults, all that type of good
2:16.9	stuff, basically taking a breakdown of all
2:20.3	nutrition for health-related terms. That's on the 20th of July. And then on July 21st is going to be one
	...

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