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October 2, 2025 18 mins

Why do endurance athletes perform better after exhaustion, while power athletes decline? How does muscle coordination impact warm-ups and performance? In this episode, Dr. Daniel Boullosa and Dr. Olli Tikkanen dive deep into the science behind exercise physiology, muscle activation, and evolutionary adaptations in sports performance.

Dr. Boullosa shares findings from his studies on how endurance-trained and strength-trained athletes respond differently to high-intensity squats and prolonged running. They discuss the role of warm-ups in improving neuromuscular activation and how whole-body exercises impact metabolic efficiency. The conversation also explores the evolutionary significance of fatigue, explaining how it serves as a protective mechanism to maintain homeostasis and regulate energy expenditure. The episode concludes with insights into personalized training load management and injury risk in elite sports, particularly in high-demand schedules like professional soccer.

This episode is packed with valuable information for sports scientists, coaches, and athletes who want to optimize training and recovery. Learn how different physiological responses shape performance and how evolutionary insights can guide smarter training decisions.

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This podcast episode is sponsored by Fibion Inc. | Better Sleep, Sedentary Behavior and Physical Activity Research with Less Hassle

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Collect, store and manage SB and PA data easily and remotely - Discover ground-breaking Fibion SENS

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Learn more about Fibion Flash - a versatile customizable tool with HRV and accelerometry capability. 

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SB and PA measurements, analysis, and feedback made easy. Learn more about Fibion Research.

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Fibion Helix – Ideal for large scale studies. Scalable and affordable with patented precision.

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Fibion G2 – validated data on sitting, standing, activity types, energy expenditure, with participant friendly reports.  

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Learn more about Fibion Sleep and Fibion Circadian Rhythm Solutions.

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Fibion Kids - Activity tracking designed for children.

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Explore our Wearables, Experience sampling method (ESM), Sleep, Heart rate variability (HRV), Sedentary Behavior and Physical Activity article collections for insights on related articles.

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Refer to our article "Physical Activity and Sedentary Behavior Measurements" for an exploration of active and sedentary lifestyle assessment methods.

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Learn about actigraphy in our guide: Exploring Actigraphy in Scientific Research: A Comprehensive Guide.

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Gain foundational ESM insights with "Introduction to Experience Sampling Method (ESM)" for a comprehensive overview.

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Explore accelerometer use in health research with our article "Measuring Physical Activity and Sedentary Behavior with Accelerometers ".

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For an introduction to the fundamental aspects of HRV, consider revisiting our Ultimate Guide to Heart Rate Variability.

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Follow the podcast on Twitter https://twitter.com/PA_Researcher 

Follow host Dr Olli Tikkanen on Twitter https://twitter.com/ollitikkanen 

Follow Fibion on Twitter https://twitter.com/fibion 

Check our YouTube channel: https://www.youtube.com/@PA_Researcher 

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