Uploaded May 2026 | Updated September 2026, 2 weeks ago
Three weeks of stalled squats. The conventional answer is to switch programs because you've crossed into intermediate territory. The data says something else. In Part 3 of the Progressive Loading series, Dr. Jordan Feigenbaum and Dr. Austin Baraki walk through why the standard novice / intermediate / advanced framework runs into trouble in real training, what the four adaptive systems are actually doing across a training career, and why most of what gets called a stall is impatience with the noise floor at your current strength level.
This is Part 3 of the Progressive Loading series. Part 1 covered why loading should react to demonstrated adaptation. Part 2 covered RPE-based autoregulation and the artificial-momentum approach. Today is the mechanism layer.
Timestamps
0:00 - Why your lifts aren't moving
1:52 - The novice / intermediate / advanced framework, three claims to test
13:23 - What 17 years of powerlifting data show about how long you keep getting stronger
32:28 - How getting stronger actually works (four systems on four clocks)
38:00 - What early growth is actually made of (the Damas 2016 deuterium study)
50:33 - The connective tissue lag and why early-training injuries happen
58:32 - Why heavy lifting works for bone density (and why "walk on a treadmill" advice misses)
1:05:10 - Why new lifters get hurt 3 to 10 times more than experienced lifters
1:12:56 - Fatigue is at least four different things (and most coaches treat it as one)
1:26:19 - The CNS fatigue myth (and what the data actually says)
1:33:52 - When the bar isn't moving: how to actually diagnose a stall
1:45:51 - Takeaways and next week's tease: leptin and low testosterone
Resources
Training Plateau Action Plan (free): barbellmedicine.com/training-plateau-action-plan
Progressive Loading Part 1: barbellmedicine.com/blog/progressive-loading
Beyond Progressive Overload Part 2: barbellmedicine.com/blog/beyond-progressive-overload
The Death of the Novice-Intermediate-Advanced Framework Part 3: Article: barbellmedicine.com/blog/novice-intermediate-advanced-strength-training
BBM Programs and Coaching: barbellmedicine.com
Latella C et al. Using powerlifting athletes to determine strength adaptations across ages in males and females. Sports Med. 2024. pubmed.ncbi.nlm.nih.gov
Del Vecchio A et al. The increase in muscle force after 4 weeks of strength training is mediated by adaptations in motor unit recruitment and rate coding. J Physiol. 2019. pubmed.ncbi.nlm.nih.gov/30644584
Lecce E et al. Resistance training-induced adaptations in the neuromuscular system. J Physiol. 2025.
Balshaw TG et al. Neural adaptations after 4 years vs 12 weeks of resistance training. Scand J Med Sci Sports. 2019. pubmed.ncbi.nlm.nih.gov/30474171
Skarabot J et al. Voluntary activation and agonist EMG amplitude in resistance-trained men. J Appl Physiol. 2021.
Roberts MD et al. Mechanisms of mechanical overload-induced skeletal muscle hypertrophy. Physiol Rev. 2023.
Damas F et al. Early resistance training-induced increases in muscle cross-sectional area are concomitant with edema-induced muscle swelling. Eur J Appl Physiol. 2016. pubmed.ncbi.nlm.nih.gov/26280652
Lazarczuk SL et al. Mechanical, material and morphological adaptations of healthy lower limb tendons. Sports Med. 2022. pubmed.ncbi.nlm.nih.gov/35657492
Kubo K et al. Time course of changes in the human Achilles tendon properties. Eur J Appl Physiol. 2012. pubmed.ncbi.nlm.nih.gov/22105708
Watson SL et al. High-intensity resistance and impact training improves bone mineral density in postmenopausal women: the LIFTMOR randomized controlled trial. J Bone Miner Res. 2018. pubmed.ncbi.nlm.nih.gov/28975661
Aasa U et al. Injuries among weightlifters and powerlifters: a systematic review. Br J Sports Med. 2017. pubmed.ncbi.nlm.nih.gov/27445362
Prieto-Gonzalez P et al. Injuries in novice participants during an eight-week start-up CrossFit program. Int J Environ Res Public Health. 2020.
Kanayama G et al. Tendon rupture in body builders. Sports Med. 2015.
Enoka RM, Duchateau J. Translating fatigue to human performance. Med Sci Sports Exerc. 2016. pubmed.ncbi.nlm.nih.gov/27015386
Behrens M et al. Fatigue and human performance: an updated framework. Sports Med. 2023. pubmed.ncbi.nlm.nih.gov
Halperin I et al. Accuracy in predicting repetitions to task failure: scoping review. Sports Med. 2022. pubmed.ncbi.nlm.nih.gov
Skarabot J et al. Neuromuscular fatigue and recovery after heavy resistance, jump, and sprint training. Eur J Appl Physiol. 2018.
Garcia-Ramos A et al. Greater neuromuscular and perceptual fatigue after low-load to failure than heavy-load to failure. 2024.
Minor, Brian MS, CSCS1; Helms, Eric PhD, CSCS2; Schepis, Jacob3. RE: Mesocycle Progression in Hypertrophy: Volume Versus Intensity.
Three weeks of stalled squats. The conventional answer is to switch programs because you've crossed into intermediate territory. The data says something else. In Part 3 of the Progressive Loading series, Dr. Jordan Feigenbaum and Dr. Austin Baraki walk through why the standard novice / intermediate / advanced framework runs into trouble in real training, what the four adaptive systems are actually doing across a training career, and why most of what gets called a stall is impatience with the noise floor at your current strength level.
This is Part 3 of the Progressive Loading series. Part 1 covered why loading should react to demonstrated adaptation. Part 2 covered RPE-based autoregulation and the artificial-momentum approach. Today is the mechanism layer.
Timestamps
0:00 - Why your lifts aren't moving
1:52 - The novice / intermediate / advanced framework, three claims to test
13:23 - What 17 years of powerlifting data show about how long you keep getting stronger
32:28 - How getting stronger actually works (four systems on four clocks)
38:00 - What early growth is actually made of (the Damas 2016 deuterium study)
50:33 - The connective tissue lag and why early-training injuries happen
58:32 - Why heavy lifting works for bone density (and why "walk on a treadmill" advice misses)
1:05:10 - Why new lifters get hurt 3 to 10 times more than experienced lifters
1:12:56 - Fatigue is at least four different things (and most coaches treat it as one)
1:26:19 - The CNS fatigue myth (and what the data actually says)
1:33:52 - When the bar isn't moving: how to actually diagnose a stall
1:45:51 - Takeaways and next week's tease: leptin and low testosterone
Resources
Training Plateau Action Plan (free): barbellmedicine.com/training-plateau-action-plan
Progressive Loading Part 1: barbellmedicine.com/blog/progressive-loading
Beyond Progressive Overload Part 2: barbellmedicine.com/blog/beyond-progressive-overload
The Death of the Novice-Intermediate-Advanced Framework Part 3: Article: barbellmedicine.com/blog/novice-intermediate-advanced-strength-training
BBM Programs and Coaching: barbellmedicine.com
Latella C et al. Using powerlifting athletes to determine strength adaptations across ages in males and females. Sports Med. 2024. pubmed.ncbi.nlm.nih.gov
Del Vecchio A et al. The increase in muscle force after 4 weeks of strength training is mediated by adaptations in motor unit recruitment and rate coding. J Physiol. 2019. pubmed.ncbi.nlm.nih.gov/30644584
Lecce E et al. Resistance training-induced adaptations in the neuromuscular system. J Physiol. 2025.
Balshaw TG et al. Neural adaptations after 4 years vs 12 weeks of resistance training. Scand J Med Sci Sports. 2019. pubmed.ncbi.nlm.nih.gov/30474171
Skarabot J et al. Voluntary activation and agonist EMG amplitude in resistance-trained men. J Appl Physiol. 2021.
Roberts MD et al. Mechanisms of mechanical overload-induced skeletal muscle hypertrophy. Physiol Rev. 2023.
Damas F et al. Early resistance training-induced increases in muscle cross-sectional area are concomitant with edema-induced muscle swelling. Eur J Appl Physiol. 2016. pubmed.ncbi.nlm.nih.gov/26280652
Lazarczuk SL et al. Mechanical, material and morphological adaptations of healthy lower limb tendons. Sports Med. 2022. pubmed.ncbi.nlm.nih.gov/35657492
Kubo K et al. Time course of changes in the human Achilles tendon properties. Eur J Appl Physiol. 2012. pubmed.ncbi.nlm.nih.gov/22105708
Watson SL et al. High-intensity resistance and impact training improves bone mineral density in postmenopausal women: the LIFTMOR randomized controlled trial. J Bone Miner Res. 2018. pubmed.ncbi.nlm.nih.gov/28975661
Aasa U et al. Injuries among weightlifters and powerlifters: a systematic review. Br J Sports Med. 2017. pubmed.ncbi.nlm.nih.gov/27445362
Prieto-Gonzalez P et al. Injuries in novice participants during an eight-week start-up CrossFit program. Int J Environ Res Public Health. 2020.
Kanayama G et al. Tendon rupture in body builders. Sports Med. 2015.
Enoka RM, Duchateau J. Translating fatigue to human performance. Med Sci Sports Exerc. 2016. pubmed.ncbi.nlm.nih.gov/27015386
Behrens M et al. Fatigue and human performance: an updated framework. Sports Med. 2023. pubmed.ncbi.nlm.nih.gov
Halperin I et al. Accuracy in predicting repetitions to task failure: scoping review. Sports Med. 2022. pubmed.ncbi.nlm.nih.gov
Skarabot J et al. Neuromuscular fatigue and recovery after heavy resistance, jump, and sprint training. Eur J Appl Physiol. 2018.
Garcia-Ramos A et al. Greater neuromuscular and perceptual fatigue after low-load to failure than heavy-load to failure. 2024.
Minor, Brian MS, CSCS1; Helms, Eric PhD, CSCS2; Schepis, Jacob3. RE: Mesocycle Progression in Hypertrophy: Volume Versus Intensity.
