Sources for The Comeback Code: A Physiological Blueprint for Athletic Renaissance After 40

8/15/20252 min read

silver and black round device
silver and black round device

Sources:

  1. Taylor & Francis Online. "Testosterone and resistance training improved physical performance and reduced fatigue in frail older men: 1 year follow-up of a randomized clinical trial." 2024. https://www.tandfonline.com/doi/full/10.1080/13685538.2024.2403519

  2. Sports Medicine Open. "Comparing the Impacts of Testosterone and Exercise on Lean Body Mass, Strength and Aerobic Fitness in Aging Men." 2024. https://sportsmedicine-open.springeropen.com/articles/10.1186/s40798-024-00703-x

  3. PMC. "Various Factors May Modulate the Effect of Exercise on Testosterone Levels in Men." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7739287/

  4. PubMed. "Effects of progressive resistance training on growth hormone and testosterone levels in young and elderly subjects." https://pubmed.ncbi.nlm.nih.gov/2796409/

  5. Journal of Applied Physiology. "Effects of heavy-resistance training on hormonal response patterns in younger vs. older men." https://journals.physiology.org/doi/full/10.1152/jappl.1999.87.3.982

  6. PubMed. "Testosterone physiology in resistance exercise and training: the up-stream regulatory elements." https://pubmed.ncbi.nlm.nih.gov/21058750/

  7. Hypertension. "Testosterone and Exercise in Middle-to-Older Aged Men." https://www.ahajournals.org/doi/10.1161/HYPERTENSIONAHA.120.16411

  8. MedShun. "The Impact Of Exercise On Testosterone Levels: A Comprehensive Analysis." February 5, 2024. https://medshun.com/article/how-does-exercise-on-testosterone-levels

  9. Healthline. "Exercises That Increase Testosterone Levels, Plus Those That Don't." August 11, 2022. https://www.healthline.com/health/does-working-out-increase-testosterone

  10. Hospital for Special Surgery. "How Aging Affects Testosterone and Muscle Mass in Men." June 5, 2023. https://www.hss.edu/article_muscle-mass-testosterone.asp

  11. UCF School of Kinesiology. "Cognition, Neuroplasticity, & Sarcopenia (CNS) Lab." February 6, 2025. https://healthprofessions.ucf.edu/skrs/cns-lab/

  12. ScienceDirect. "The role of motor learning and neuroplasticity in designing rehabilitation approaches for musculoskeletal pain disorders." https://www.sciencedirect.com/science/article/abs/pii/S1356689X10000834

  13. PMC. "Neuroplasticity and Motor Rehabilitation in Multiple Sclerosis: A Systematic Review on MRI Markers of Functional and Structural Changes." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8526725/

  14. ScienceDirect. "Frontiers in sarcopenia: Advancements in diagnostics, molecular mechanisms, and therapeutic strategies." https://www.sciencedirect.com/science/article/pii/S0098299724000293

  15. PubMed. "The role of motor learning and neuroplasticity in designing rehabilitation approaches for musculoskeletal pain disorders." https://pubmed.ncbi.nlm.nih.gov/20615749/

  16. PMC. "Accelerated sarcopenia precedes learning and memory impairments in the P301S mouse model of tauopathies and Alzheimer's disease." https://pmc.ncbi.nlm.nih.gov/articles/PMC11294019/

  17. PMC. "Neuroplasticity subserving motor skill learning." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3217208/

  18. ScienceDirect. "Experimental models as a tool for research on sarcopenia: A narrative review." https://www.sciencedirect.com/science/article/pii/S1568163724003520

  19. Frontiers in Immunology. "Characterizing the skeletal muscle immune microenvironment for sarcopenia: insights from transcriptome analysis and histological validation." July 4, 2024. https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2024.1414387/full

  20. Trends in Molecular Medicine. "Lost in translation: challenges of current pharmacotherapy for sarcopenia." https://www.cell.com/trends/molecular-medicine/fulltext/S1471-4914(24)00138-2