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TREELINE BLOG
Join us as we explore the latest science-based insights on endurance training, deliver expert tips, and share inspiring stories from the track to the trails.
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The Myth of Mitochondrial Density for Endurance Performance
The implicit assumption is that all of those mitochondria are created equal. That’s where a new paper by Mikael Flockhart and colleagues at the Swedish School of Sports and Health Science in Stockholm picks up. If not all mitochondria are the same, then what exactly do the bad ones look like, and how do we avoid them?
2 days ago


Super Shoes Revolutionized Road Running. Where Are They in Trail Running?
Super shoes have taken over elite road and tracking running in the decade since they first emerged with Nike’s invention of the Vaporfly 4%. One category of runner that hasn’t gotten the same boost that everyone else got when super shoes appeared: trail runners. Research on trail running can be hard to do. Simulating rock and switchbacks on a treadmill in a laboratory poses some readily apparent challenges. Two recent studies provide some answers though.
Aug 3


When Science Fails Athletes (And Why That's Okay)
Early in my coaching career, I came across this idea that has sort of lurked in the shadows of the coaching world for decades: while science is humming along providing rigorous data on what will move the needle on an athlete’s performance, coaches are the innovators. The narrative goes “Science will likely take 10-20 more years to explain why the practices coaches are using today are effective.” The first 2 months of my masters work involved recalibrating my understanding of
Jul 20


What Shoe Prevents Running Overuse Injury?
Running-related overuse injuries remain a plague on the sport, sidelining some 20% of runners for at least a few days each training block. Shoe manufacturers and running retailers have worked with clinicians (podiatrists, physical therapists, etc.) to help runners and walkers alike find a footwear solution that will keep them free from injury.
With the advances in shoe design and materials science over the last decade, what should we know about footwear's injury-reducing c
Oct 18, 2025


Should You Lose Weight In Order To Perform Better? Everything You Need To Know.
What you should know and how to achieve weight loss that serves your ultimate goal.
Jul 25, 2024
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