#25 - Herman's theory that exercise doesn't affect body weight with Dr Herman Pontzer скачать в хорошем качестве

#25 - Herman's theory that exercise doesn't affect body weight with Dr Herman Pontzer

Dr Glenn McConell chats with Professor Herman Pontzer who is a Human Evolutionary anthropologist from Duke University. Herman has undertaken research with current day hunter gather communities and shown that although they are a lot more physically active than western societies, their average energy expenditures are not higher!! Constrained energy model (energy compensation): that when exercise the body constrains other energy use so less change in energy expenditure than would expect. Based on this he has the theory that exercise doesn’t affect energy expenditure/body weight. Glenn challenged these ideas and was a devils advocate throughout this discussion. 0:00. Introduction 1:47. He was surprised by Hadza hunter gathers energy exp He found they undertake 5-10x more physical activity than the average American but their energy expenditures are not higher!!! He was very surprised. “More efficient”. 7:39. Dissociations between PA and energy expenditure 8:34. Riding 1hr/day+10k steps doesn't increase energy exp?! 9:43. Constrained energy model Idea that when exercise the body constrains other energy use so less change in energy expenditure than would expect. 11:20. Minnesota starvation experiment Reduced resting metabolic rate by 400 KCal/day. I said 600 by mistake. Is that the maximum can expect with exercise? Running a marathon a day: found daily energy expenditure 600 KCal/day less than would expect. 14:30. Starvation vs extreme exercise Seems different compensation mechanisms. 16:30. Midwest exercise 2 study 17:05. Constrained energy model takes time Takes days. The biggest loser etc. 18:51. Pushing past the constrained energy model? Race across America. Tour de France. Running across America. Pregnancy. 21:20. Within subjects vs cross sectional effects 23:58. Higher body fat compensate more with exercise His findings, therefore would suggest harder for people with higher body fat to lose weight with exercise. Set point. Evolution etc. 26:12. Optimal BMI for all cause mortality increasing 28:00. BMR, energy exp and the Constrained model Is it affected?! Does it fit the model? Assumptions/limitations with his measurements. How calories are spent during the day and “our very rough measures of it don’t capture it enough”. 32:39. Double labeled water method 35:19. RER and double labeled water method Or use dietary records rather than RER. 37:50. Measuring food intake in Hunter gathers 40:02. Shouldn’t athletes that eat a lot put on weight? 42:29. Amount of exercise that overtakes Constrained model 44:44. Lack of weight loss in exercise studies His energy compensation 2018 review etc. 49:04. Agree some energy compensation with exercise 51:12. RED-S vs energy compensation Overtraining etc. 53:40. Exercise and resting metabolic rate Generally no change so how fits with energy compensation? NEAT. Accelerometry. 56:09. Cooking potatoes doubles the energy density?! 57:38. He thinks diet determines body weight “Diet for weight and exercise for everything else”. 1:00:17. Hunger/satiety 1:01:38. Losing weight with exercise and hunger hormones 1:03:21. Genetics x environment re obesity crisis Processed foods and our genes. Fat and CHO foods mixed together. 1:05:58. Hadza don’t mix CHO and fat foods 1:07:52. Components making up the constrained energy model 1:12:41. Outro (9 seconds) Inside Exercise brings to you the who's who of exercise metabolism, exercise physiology and exercise’s effects on health. With scientific rigor, these researchers discuss popular exercise topics while providing practical strategies for all. The interviewer, Emeritus Professor Glenn McConell, has an international research profile following 30 years of Exercise Metabolism research experience while at The University of Melbourne, Ball State University, Monash University, the University of Copenhagen and Victoria University. He has published over 120 peer reviewed journal articles and recently edited an Exercise Metabolism eBook written by world experts on 17 different topics (https://link.springer.com/book/10.100.... Connect with Inside Exercise and Glenn McConell at: Twitter: @Inside_exercise and @GlennMcConell1 Instagram: insideexercise Facebook: Glenn McConell LinkedIn: Glenn McConell   / glenn-mcconell-83475460   ResearchGate: Glenn McConell Email: glenn.mcconell@gmail.com Subscribe to Inside exercise: Spotify: https://open.spotify.com/show/3pSYnNS... Apple Podcasts: https://podcastsconnect.apple.com/my-... Google Podcasts: https://podcasts.google.com/feed/aHR0... Anchor: https://anchor.fm/insideexercise Podcast Addict: https://podcastaddict.com/podcast/402...