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In this mind-expanding episode, I’m joined by sports scientist and biomechanics researcher Gustavo Leporace, who unpacks the findings from his newly published paper:

“The Search for the Holy Grail of Running Biomechanics – Is There an Ideal Movement Profile for Minimizing Mechanical Overload?”

https://journals.sagepub.com/eprint/PZ8SVIXH7GSZI7YPTJVQ/full
We discuss:

• 🏃‍♂️ Why no single “perfect” running form exists
• 📊 How machine learning revealed 5 distinct running profiles based on load patterns
• ⚖️ The difference between peak vs. cumulative mechanical load—and why it matters
• 🧬 Variables like cadence, duty factor, vertical stiffness, and movement smoothness
• 🔄 When changing your running technique can help (and when it can backfire)
• 🔍 Why injury rehab should first focus on load management before movement retraining

📚 Mentioned Resources
🎥 YouTube explainer video of the 5 running profiles

Learn more about Brodie's Research Database & AI Assistant 📄🔍

For MORE Run Smarter Resources 🏃‍♂️📚
- Including Free Injury Prevention Courses 🩹🎓
- The Run Smarter Book 📖
- Access to Research Papers 📄🔍
- & Ways to Work with Brodie 🤝👟
👉 CLICK HERE! 🎉✨

Is it safe to exercise while fasting? What if you're a recreational runner? A woman? Or trying to lose weight?

In this episode, I’m joined by the brilliant Kira Sutherland, a naturopath and sports nutritionist with over 25 years of clinical experience and a deep passion for endurance sports. Together, we unravel the science (and myths) behind fasting and athletic performance.

Kira shares practical, evidence-informed insights about:

• 🕒 The different types of fasting (intermittent, dry, Ramadan, fasted training)
• 💪 How fasted exercise influences fat adaptation, performance, and recovery
• ⚠️ Common mistakes athletes make with fasted training
• 👩‍🦰 Why women respond differently to fasting than men (and what to do about it)
• 🍽 The truth about post-exercise eating windows and what matters most
• 🧠 Why the body’s natural rhythms may matter more than your fasting schedule
• 📆 How often and when runners should fast depending on their goals

Whether you're curious about using fasting for performance, longevity, gut health, or fat loss — this episode will help you understand how to do it safely, effectively, and in sync with your body.

Learn more about Brodie's Research Database & AI Assistant 📄🔍

In this episode, Brodie dives into three new studies aimed at helping runners prevent injury and understand how tech and biomechanics affect performance. Whether you're a recreational runner or an aspiring marathoner, these findings offer practical, science-backed takeaways.

Featured Studies & Key Insights

Asymmetry & Bone Stress Injuries

Study Title: Can biomechanical variables and asymmetry predict bone stress injuries in collegiate distance runners?

• ✅ Key Finding: Even small left-to-right asymmetries may increase injury risk — particularly for female runners.
• 🧍‍♂️ Implication: Asymmetry under 10% was still meaningful in injury prediction. Don’t ignore minor imbalances in cadence, step length, or ground reaction force.
• 🧠 Tip: Wearables that track contact time or vertical oscillation may help identify early imbalances before pain begins.

Strength & Flexibility Self-Assessments for Marathoners

Study Title: Strength and Flexibility Self-Assessment and Subsequent Training Injuries Among Recreational Runners of the NYC Marathon

• ✅ Key Finding: The single-leg glute bridge was the only test significantly associated with injury risk.
• ❌ Flexibility tests (sit & reach, quad stretch) and other strength tests (planks, heel raises, push-ups) had no predictive value.
• 🏠 DIY Test: If you can’t hold a single-leg glute bridge for >20 seconds on your weaker side, your injury risk may be higher.

Super Shoes & Injury Risk

Study Title: Technology Advanced Running Shoes Reduce Biomechanical Factors of Running-Related Injury Risk

• 👟 Super shoes (like Nike Alphafly) encouraged mid/forefoot striking without increasing joint or muscle strain.
• ✅ They reduced load on key areas like the ankle joint, soleus, and peroneus longus.
• ❗️Minimalist shoes, on the other hand, tripled ankle joint forces and heavily loaded the calf and foot — a risk for Achilles and metatarsal injuries.
• ⚠️ Caution: Transition slowly into super shoes or minimalist footwear. Your body needs time to adapt to new mechanics.

Practical Takeaways for Runners

• Monitor asymmetries using wearables or self-awareness — don’t wait for pain.
• Use the glute bridge hold as a simple strength test at home. Aim for >20 seconds on both sides.
• Super shoes aren’t just for speed — they may actually help with injury prevention, especially for habitual forefoot strikers.
• Avoid going cold turkey into minimalist shoes unless you're conditioned for it.

📚 Want to Go Deeper?

🔍 All referenced studies are stored in the Run Smarter Research Database — accessible for just $8.99/month.
💬 Plus, get access to the Run Smarter AI Assistant, which answers your running questions based on podcast episodes, papers, and course content.

👉 Click here to explore membership options

For MORE Run Smarter Resources 🏃‍♂️📚
- Including Free Injury Prevention Courses 🩹🎓
- The Run Smarter Book 📖
- Access to Research Papers 📄🔍
- & Ways to Work with Brodie 🤝👟
👉 CLICK HERE! 🎉✨