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Dr. Ray Browning
Exercise scientist and biomechanist; co-founder of Biomodem and lead researcher on Nike's Breaking2 project, invited to explain differences between efficiency and economy and their training implications.
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Oct 30, 2025
• 1h 7min
395: The Difference Between Efficiency and Economy, and Why You Should Care
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Dr. Ray Browning, an exercise scientist and biomechanist who co-founded Biomodem and played a key role in Nike's Breaking2 project, dives into the crucial distinction between efficiency and economy in sports. He explains efficiency as energy output versus input, while economy focuses on energy required per velocity. Browning shares insights from the Breaking2 project, highlighting how footwear innovations enhanced running economy. He also discusses the importance of improving economy for better performance and offers actionable strategies to optimize training.
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