

How Lifelong Exercise Changes Everything About Aging – with Professor Scott Trappe
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If you've seen those viral MRI images comparing active and sedentary 70-year-olds, you've witnessed one of the most compelling visual demonstrations of how exercise shapes the aging process - but the story behind them reveals even more.
In this episode, Professor Scott Trappe - the researcher behind those images - explains what happens to muscle as we age and how exercise fundamentally alters this process.
You'll discover:
• What those MRI comparisons reveal about the aging trajectory
• When muscle mass, strength, and power peak and how exercise affects this timeline
• The reality of fast-twitch fibre changes with age and what training can reverse
• Why males and females show remarkably similar responses to exercise across the lifespan
• Scott's evidence-based approach that consistently outperforms complex programming
• How muscle with different training histories responds to exercise stimuli
• The finding that 90-year-old lifelong exercisers maintain muscle quality similar to 40-year-olds
• Why consistency matters more than complexity in long-term outcomes
This conversation explores what decades of research reveal about muscle adaptation and the aging process.