Ep. 243 - Exercise Energy Compensation: It's Not JUST About Calories (ft. Eric Trexler)

Oct 9, 2023

Newly added co-host Eric Trexler discusses exercise energy compensation, the complexities of calories in and calories out, and the future of research in this field. They also talk about the utility of doubly labelled water and the potential negative effects of low energy availability. A light-hearted conversation includes personal anecdotes and perspectives on bodybuilding competitions.

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Introduction

00:00 • 2min

Social Media Presence and Personal Attachment

01:53 • 26min

Researcher's Passion for Exercise

27:59 • 15min

Understanding Energy Expenditure and Adaptation in Different Lifestyles

43:11 • 5min

Exercise Energy Compensation and its Limits

48:31 • 30min

Effects of Low Energy Availability

01:18:50 • 17min

Engaging with Dr. Eric Trexler and Personal Anecdotes

01:36:06 • 2min

Personal Preferences in Bodybuilding Competitions

01:38:05 • 5min

Where to Find the Speaker and their Live Program

01:42:51 • 2min

This is a monster episode. Newly added co-host Eric Trexler details his impressive credentials, groundbreaking new line of research and perhaps most importantly, the best way to effectively execute a single leg take-down on an unsuspecting person.

His new appointment at Duke University will be looking in part at the topic of today, exercise energy compensation. It turns out that calories in, calories out is a little more complicated than most would assume. Made famous by Dr. Herman Pontzer and his book Burn, Dr. Trexler explores what exactly this phrase means, the utility of doubly labelled water and the future of research in this field.

00:00 Officially welcoming Eric (Trexler) to the holy trifecta

06:14 Trexler’s background and what’s in store for Helms

Hall 2013 Diet versus exercise in "the biggest loser" weight loss competition https://pubmed-ncbi-nlm-nih-gov/23404767/

Hall 2022 Energy compensation and metabolic adaptation: "The Biggest Loser" study reinterpreted https://pubmed.ncbi.nlm.nih.gov/34816627/

18:11 Trexler’s training story

29:25 Why Trexler doesn’t like Dr Grant Tinsley (scandal) and the passion for exercise science

32:27 Trexler the researcher and exercise energy compensation

39:08 Explaining Doubly Labelled Water

43:28 The overarching aim of Trexler’s research and the role of exercise in weight loss

Speakman 2019 The International Atomic Energy Agency International Doubly Labelled Water Database: Aims, Scope and Procedures https://pubmed.ncbi.nlm.nih.gov/31743893/

1:02:40 Negative energy balance and energy expenditure compensation

MASS Research Review https://massresearchreview.com/

Willis 2022 Physical Activity and Total Daily Energy Expenditure in Older US Adults: Constrained versus Additive Models https://pubmed.ncbi.nlm.nih.gov/34334719/

1:13:20 Compensatory mechanisms with negative energy balance

Speakman 2020 Why does caloric restriction increase life and healthspan? The 'clean cupboards' hypothesis https://pubmed.ncbi.nlm.nih.gov/34692140/

1:29:20 The official introduction of Dr Eric Trexler (T-rex) to Iron Culture: hopes for future research as an academic and a coach

1:36:04 Formally retracting a controversial statement (a topic for future discussion…)

1:42:54 Where to find Eric Trexler

Instagram @trexlerfitness https://www.instagram.com/trexlerfitness/

MASS Research Review https://massresearchreview.com/

MASS YouTube https://www.youtube.com/@MASSResearchReview

Office Hours (next stream: 10/11/2023) https://www.youtube.com/watch?v=dXUNVMdIaP4