Ep 310 - Are People Getting "Metabolic Stress" Wrong?
Jan 15, 2025
Discover the fascinating role of metabolic stress in muscle growth and the common myths surrounding it. Delve into the intricacies of blood flow restriction training and its real impact on muscle performance. Enjoy uplifting stories of personal fitness transformations, while debunking misconceptions about aesthetics and steroid use. Learn about the nuanced relationship between fat loss and muscle preservation, and explore the pitfalls of confidence in scientific discussions. Engage with the lively banter and insightful content that challenges the status quo in fitness!
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insights INSIGHT
Metabolic Stress Misconceptions
Metabolic stress, often associated with "the burn," is frequently misunderstood.
It involves metabolite accumulation from anaerobic glycolysis during resistance training.
insights INSIGHT
Energy Systems in Resistance Training
Energy systems (ATP-PC, glycolysis, oxidative) are always active, but their efficiency and speed vary.
Resistance training relies on anaerobic glycolysis, leading to lactate, hydrogen ions, and metabolite buildup.
insights INSIGHT
Metabolic Stress and Hypertrophy
While metabolic stress contributes to local fatigue, its direct impact on hypertrophy is debated.
It may indirectly influence hypertrophy through cell swelling or satellite cell activity.
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In today's episode, Drs Trexler and Helms discuss a wide range of fitness topics including metabolic stress, "the pump," targeting the different heads of the biceps, individualising diets and supplement protocols, maximal rates of fat loss, blood flow restricted training, the philosophy of science, and much more!
We had some technical issues while recording this episode live, but it's all fixed now with the wonders of editing. If you don't understand a couple of the jokes, they're referring to chaos that has been deleted.
Time stamps:
00:00 Straight into the topic: why should anyone care about metabolic stress? 03:13 Helms takes a deep dive into energy systems and muscle physiology 12:37 Subjective and objective measures of the pump and potential influencing factors 22:12 Arterial and venous occlusion 29:35 Update on Trexler’s training and Q&A 1 different curl variations 38:53 Q&A 2 Manipulating forearm position for the biceps? 42:42 Q&A 3 Can BFR increase vascularity? And an aside on muscle memory and testosterone 48:03 Q&A 4 Individualising supplements and diet 58:34 Q&A 5 Fat oxidation and maximum rate of fat loss per day with some applications for contest prep 1:13:42 Q&A 6 Science communicators/educators and the philosophy of science Larsen 2025 Knee flexion range of motion does not influence muscle hypertrophy of the quadriceps femoris during leg press training in resistance-trained individuals https://sportrxiv.org/index.php/server/preprint/view/502 Kubo 2019 Effects of squat training with different depths on lower limb muscle volumes https://pubmed.ncbi.nlm.nih.gov/31230110/ Iron Culture Ep. 109- Empiricism vs Rationalism: What Do We Really Know When It Comes To Fitness? https://www.youtube.com/watch?v=qT3KPnTgO7M 1:29:27 Q&A 7 Using BFR in practice 1:30:50 Closing out MASS Research Review https://massresearchreview.com/
--- Music credit:
Airport Lounge - Disco Ultralounge by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/...
Iron Culture presented by MASS