Dr Glenn McConell chats with Dr Trent Stellingwerff from the Canadian Sport Institute Pacific. Trent has a very interesting background in applied research and translation through coaching Olympic athletes etc. Formerly head of R&D at PowerBar. In a really fun chat we talked mainly about his research with the very important relatively new area of relative energy deficiency in sport (RED-S). RED-S effects not only exercise performance but also health. We also sports performance after pregnancy. Important take home: Need to be in long-term energy balance for long term ideal body composition, health and exercise performance. Twitter: @TStellingwerff.  

0:00. Introduction and Trent’s background 

6:58. Melbourne commonwealth games. His wife ran there. Craig Mottram: Shivers up the spine! 

10:40. Relative energy deficiency in sport (RED-S). Low energy availability (LEA) etc. 

14:15. Problematic vs adaptable. LEA 

17:20. Effects on hormones and RMR 

18:00 Sex differences 

20:15. Guidelines for measuring energy expenditure 

25:34. Measuring body weight too crude. If in energy deficit RMR decreases. 

28:40. Partitioning energy to vital organs 

32:24. Indicators of RED-S 

34:25. RED-S results in greater stress fractures 

37:25. LEA due to exercise vs diet 

40:50. Ovulation doesn’t occur every cycle 

43:23. Exercise performance vs RED-S 

45:35. RED-S and health. Need to be in energy balance for ideal body composition, health and exercise performance long term. 

49:37. Power to weight ratio 

52:56. Overtraining can be due to RED-S. Energy intake not considered enough in overtraining studies. 

56:44. RED-S/overtraining and heart rate. 

59:47. Things not working in the lab/real life. Don’t assume. 

1:04:20. Timing of carbohydrate intake 

1:06:20. Exercise and pregnancy 

1:10:39. Muscle biopsies no big deal after childbirth! 

1:11:32. Derek Clayton wished he had a muscle biopsy in 1969.  

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/10.1007/978-3-030-94305-9).  

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