A Journey Through Concurrent Training and Nutritional Strategies

This chapter delves into the expertise of a researcher in concurrent training, focusing on the dual development of endurance and strength. Listeners will learn about the individual's academic journey from sports science to a PhD, as well as their current research on nutritional strategies for improving exercise outcomes.

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Hello and welcome to The Progress Theory where we discuss how to implement scientific principles to optimise human performance. I’m Dr Phil Price and on today’s episode we have Dr Matt Lee, Postdoctoral Research Fellow at the Institute for Health and Sport, at Victoria University in Melbourne.

It was originally thought that you couldn't develop strength and endurance simultaneously due to something called the interference effect. Certain molecular, hormonal and neuromuscular adaptations occur which may limit your strength training progress if you also do a large amount of endurance work, for example. However, it’s not as simple as that, and there are many factors, like training intensity and recovery time between sessions, which we can manipulate to minimise the interference effect. Dr Matt Lee specialises in concurrent training research and in this episode we discuss how the interference effect was discovered, what training factors can blunt adaptations, and what you can do to train strength and endurance simultaneously.

But before we get to the show I want to thank our sponsors, who the show would not be possible without.

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Thank you to HMN24 – fuelling human potential and optimising everyday human performance and well-being.

First of all – HMN24 is not a sports supplement company. I’ve seen sport supplements be used as a method to improve performance in the gym and at a certain sport. However, these supplements, like a pre-workout, are often used on top of a lifestyle which does not provide the foundation needed for optimal performance. There’s no point taking pre-workout supplements if your sleep, hydration, and nutrition is an unstructured mess. I’m convinced that a large percentage of injuries are often caused, not because training was poor, but because a poor lifestyle foundation increased the athlete’s susceptibility to injury. Sports supplements are often used to plaster the cracks in poor lifestyle habits, which only causes more future problems.

And this is where HMN24 is different. The product range at HMN24 not only helps improve your foundation; it optimises it. The HMN24 products are designed to fit around your circadian rhythms, from the moment you wake up, to key moments in the day when you need optimal focus, to getting the best sleep at night, there’s a product to optimise each phase of the day.

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By the time 2pm comes around the effects of caffeine from Rise has worn off, but I don’t want to take more caffeine because that’s going to interrupt getting to sleep later on. This is where Flow is perfect. It’s a caffeine-free nootropic, perfect for improving alertness and concentration during that mid-afternoon slump. And finally, I take pre-sleep just before bed, which is a comprehensive night-time complex, formulated to help support well-being and fortify the body against the fatigue and stress that come with leading a performance-driven lifestyle.

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As always, follow The Progress Theory on Instagram and Youtube, head to our website theprogresstheory.com, and check out all of our other episodes. So here is, Dr Matt Lee ...

In this episode, we discuss:

1:30 - Introduction
9:18 - What is concurrent training and the interference effect? The work of Robert Hickson
15:32 - The interference effect on different strength parameters
19:44 - Neuromuscular and molecular effects
27:57 - How the research supports the amazing feats of hybrid training seen today
33:54 - The effect of previous training on the interference effect
42:34 - Effect of volume and frequency on the interference effect
49:32 - minimum dose to minimise the interference effect

Final Thoughts

Thank you to Matt for coming onto The Progress Theory and talking about his research on concurrent training and the interference effect. It was awesome to get an understanding around where the misconceptions of the interference effect have come from and dive into the literature to show that this effect may not be as prominent as history tells us.

I just wanted to provide some final thoughts on key areas which really stood out to me.

Firstly, Matt’s discussion around the molecular responses to specific training and our training history really made me think. If the molecular response to training decreases as we become more familiar with that training, surely training regularly at both strength and endurance disciplines would reduce the molecular responses and reduce the severity of the interference effect? Does this mean that with an appropriate hybrid training programme the interference effect, if there is one, should decrease over time?

And secondly, Matt highlighted that a training frequency of 3 sessions a week is enough to create improvement but doesn’t increase the volume to such an extent that it could increase the chance of the interference effect? So, as an example, If we trained strength 3 times a week and endurance 3 times a week, all on separate days, the interference effect should barely exist. You’re training enough and getting sufficient rest in between sessions for the interference effect to not affect training at all.

Anyways I hope you enjoyed this episode and it allowed you to start thinking about your hybrid programming. If you want further information on this topic I definitely recommend checking out Matt’s research, we’ve created a link for it in the show notes. If you enjoyed the show It would be awesome if you could leave us a review and share this episode on your insta story. Feed that algorithm to help the show grow. We’ll see you in the next one.