#52 - Environmental physiology: results and lessons from the lab vs real life with Dr Lars Nybo

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Jun 26, 2023

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Dr Glenn McConell chats with Professor Lars Nybo from the University of Copenhagen. He is an expert on the effects of environmental conditions on exercise. Here he discussed factors effecting cycling performance and then focused on circumstances where one needs to be careful applying findings from the lab to the real world. A very interesting chat. Twitter: @Nyborger Nybo
0:00. Introduction
2:20. Lars incredible hour record on the bike
4:45. Lab vs real world effects of temperature on cycling
9:26. Coefficient of drag/watts/watts per kg
11:31. VO2 max vs short time trials
13:21. VO2 max (relative vs absolute) and flat vs hilly riding
15:00. How can Wout van Aert do so well in such different events?
16:46. Sprints at end of a stage vs track sprints
18:46. Lab studies steady state but doesn’t happen in real life
21:16. Lars 6 hr lab/field study mimicking real life more
26:06. Fat oxidation higher after many hours hard than fat max test
30:46. Importance of high intensity training vs volume
32:25. Fat oxidation high during hard ex even when ingesting CHO
39:56. 20 min time trial vs VO2 max
41:56. Aerodynamic positions vs power losses
46:56. Heat, stroke volume, cardiac output, VO2 max etc
50:06. Heat, central fatigue, electrical stimulation, EMG
56:46. Usefulness of rating of perceived exertion
1:00:26. Solar radiation and cardiovascular function
1:06:36. Ultraviolet light, nitrite, nitric oxide and drops in blood pressure
1:10:16. Suntan lotion and thermoregulation
1:11:26. Heat acclimation as a result of passive vs active heat
1:14:54. Fans and clothes during exercise and heat acclimation
1:17:36. Does heat acclimation help exercise in the cold?
1:19:21. Heat acclimation raises Hb mass
1:21:41. Altitude and Hb mass
1:25:06. Heat acclimation lowers Hb concentration but raises Hb mass
1:28:16. Increasing cycling infrastructure and adherence
1:32:21. Electric bicycles
1:34:06. Takeaway messages
1:36:06. Max heart rate higher in the heat
1:38:42. Outro (9 seconds) Inside Exercise brings to you the who's who of research in 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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