Dr Glenn McConell chats with Dr Tommy Lundberg from the Karolinska Institute in Stockholm, Sweden. He is an expert on resistance training (RT) and has focussed on the effect of concurrent training on exercise adaptations. That is, does doing concurrent resistance and endurance training affect the responses to resistance and endurance training compared to doing either alone. His research has specifically focused on the effects of endurance training on resistance training adaptations although we also discussed the effect of resistance training on endurance training adaptations. It appears that in many people concurrent training has either no interfering effect or may even be beneficial. However there is some limited research that endurance training, although not affecting hypertrophy, may reduce strength and/or speed of contraction. He has also done a lot of work on biological males been involved in female sports (which will be converted in a future podcast). I found it a very interesting chat. Enjoy! X: @TLexercise. 0:00. Introduction 3:03. Tommy’s background 5:25. Aland Islands 7:25. What is concurrent training? 9:40. Resistance training (RT) can benefit endurance performance 13:35. Does RT affect injuries? 15:05. The amount/volume of training and concurrent training 18:32. Little effect of endurance training on hypertrophy but might effect strength 21:30. Glenn’s frustrations at the gym 24:15. Single-leg research studies vs whole body exercise 31:20. AMPK and metabolism etc 34:00. Potential mechanisms involved 35:40. Interference of endurance on strength hasn’t been clearly shown 38:00. RT can improve endurance performance and economy 41:10. Specificity of RT adaptations 45:55. Running straight after the gym 48:55. How much RT is enough/sufficient/optimal 51.20. Benefits of circuit training 53:05. Endurance exercise interfering with strength/contraction speed 54:20. Relationship between muscle size and strength 59:05. Explosive RT best for endurance exercise 1:04:35. Order of the concurrent training 1:06:35. Arterial stiffness/health and concurrent training 1:10:25. Team sports and concurrent training 1:12.08. Different sports a concurrent training 1:13:05. Mechanisms: gene expression etc 1:16:22. Fatigue and concurrent training 1:17:40. If short on time what exercise would you recommend? 1:19:55. Sex differences? 1:20:45. Age effects? 1:21:20. Controversies in the field 1:24:25. Things that influencers can get wrong 1:25:45. Other areas that he is investigating 1:27:50. Anti inflammatories can reduce resistance training gains 1:30:08. Takeaway messages 1:31:14. Outro 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). Connect with Inside Exercise and Glenn McConell at: Twitter: @Inside_exercise and @GlennMcConell1 Instagram: insideexercise Facebook: Glenn McConell LinkedIn: Glenn McConell https://www.linkedin.com/in/glenn-mcconell-83475460 ResearchGate: Glenn McConell Email: glenn.mcconell@gmail.com Subscribe to Inside exercise: Spotify: shorturl.at/tyGHL Apple Podcasts: shorturl.at/oFQRU YouTube: https://www.youtube.com/@insideexercise Anchor: https://anchor.fm/insideexercise Google Podcasts: shorturl.at/bfhHI Anchor: https://anchor.fm/insideexercise Podcast Addict: https://podcastaddict.com/podcast/4025218 Not medical advice

Dr Glenn McConell chats with Professor Irene Davis from the University of South Florida who is a top running injuries researcher and the current president of the American College of Sports Medicine. She makes the argument that we were born to run and have evolved to land on the ball of the foot during running and this reduces impact load compared with landing on the heel. Modern running shoes tend to increase the likelihood of landing on one’s heel. She is a fan of minimalist shoes, which tend to result in landing on the forefoot not the heel. She also believes that neutral shoes are best rather than the commonly advised shoes that attempt to minimize pronation. In addition, she also believes that if one has stubborn injuries and have tried other rehabilitation retraining your running gait may be helpful. Not a huge fan of orthotics. I was actually blown away by the chat and very motivated by it. Really fun stuff. Twitter: @IreneSDavis 0:00. Introduction to podcast/Irene Davis 3:05. How Irene got into exercise research 6:43. Running injuries took off when started running shoes 13:30. Variability of loading results in less injuries 18:50. Rear foot landers have weak calves 19:54. Born to run 22:00. Calves vs tibialis anterior/shin splints 23:00. Running boom and padded running shoes 27:00. Landing on the ball of the foot reduces impact load 32:15. Cushioned shoes tended to cause heel landing 33:40. Tarahumara Mexican tribe use minimalist type shoes 35:30. Tibial shock when running on different surfaces 36:55. Running barefoot and with minimalist shoes 40:45. Training in cushioned shoes then racing in flats 42:40. The recent more efficient plated shoes 46:55. Flared shoes and greater pronation 49:40. Should change running gait? 53:50. Retraining running gait 1:02:18. Should change to minimalist shoes to land on ball of foot? 1:06:40. Should use orthotics? 1:10:10. Preparing to run with minimalist shoes 1:18:50. This is, however, controversial 1:28:32. Microtears in muscle/stress fractures 1:30:06. Warming up, stretching, ice useful? 1:35:10. Body weight and injuries 1:36:47. Can anyone run? 1:39:00. Q angle and leg length running injuries 1:42:00. Taping the patellar tendon 1:42:45. What % should increase running per week? 1:43:55. Listen to your body 1:45:00. Irene: her running and injuries etc 1:50:00. Not a fan of super shoes 1:52:17. Need to minimize pronation? 1:53:48. Retraining gait 1:56:07. Sex differences 1:57:00. Age 1:58:35. Her prestigious role as President of ACSM 2:02:02. Takeaway messages 2:03:10. Never too late to change to minimalist shoes 2:03:55. Outro 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). Connect with Inside Exercise and Glenn McConell at: Twitter: @Inside_exercise and @GlennMcConell1 Instagram: insideexercise Facebook: Glenn McConell LinkedIn: Glenn McConell https://www.linkedin.com/in/glenn-mcconell-83475460 ResearchGate: Glenn McConell Email: glenn.mcconell@gmail.com Subscribe to Inside exercise: Spotify: shorturl.at/tyGHL Apple Podcasts: shorturl.at/oFQRU YouTube: https://www.youtube.com/@insideexercise Anchor: https://anchor.fm/insideexercise Google Podcasts: shorturl.at/bfhHI Anchor: https://anchor.fm/insideexercise Podcast Addict: https://podcastaddict.com/podcast/4025218 Not medical advice