Research Topic
Endurance Sport
7 articles
There's a Respiratory Limiter in Competitive Cyclists and Runners That Interval Training Never Touches. Most Athletes Don't Know It Exists.
Dempsey 2006 identified the metaboreflex: inspiratory muscle fatigue diverts blood from working legs. McConnell Romer 2004 shows IMT gives 15% performance gain. Here's the protocol.
5 min read · 2026-09-08
Your Ferritin Is Low. You're Taking Iron Supplements. Why Isn't It Working? The Answer Is in the Biology, Not the Dose.
Non-haem iron bioavailability is 1–20% depending on absorption promoters and inhibitors. Hepcidin — the master iron regulator — is elevated for 3–6 hours post-exercise, blocking intestinal iron absorption. Knowing this changes supplementation timing completely.
5 min read · 2026-09-08
The Genetic Condition That Makes Iron Supplementation Dangerous for 1 in 200 Athletes
While iron deficiency gets all the attention in endurance sport, hereditary haemochromatosis causes iron overload in 1 in 200 people. Here's what athletes need to know.
5 min read · 2026-09-01
Exogenous Ketones: What the Evidence Actually Shows for Athletic Performance
Ketone esters and salts are marketed as a fourth fuel source for athletes. The evidence is mixed, nuanced, and training-status dependent. Here is what Cox, Holdsworth and Dearlove actually found.
5 min read · 2026-08-25
Every Endurance Athlete Knows Protein Matters. Almost None Know Their Biggest Immune Nutrient Is Quietly Depleted at the Finish Line.
Glutamine drops 20–30% after prolonged exercise, suppressing lymphocyte activity and URTI resistance. Here's the science and how dietary protein protects immunity.
5 min read · 2026-08-25
You've Been Using Caffeine Wrong Before Your A-Race — The Sensitivity Reset Protocol
Regular caffeine users blunt their own ergogenic advantage. A structured pre-competition washout protocol restores adenosine receptor sensitivity — maximising race-day caffeine effect.
5 min read · 2026-07-14
The Athlete's Heart: Why Your Enlarged Cardiac Chambers Are a Feature, Not a Bug
Endurance training enlarges the heart. The athlete's heart is not a pathology — it's the most efficient cardiovascular adaptation in human physiology. Here's how it works.
5 min read · 2026-06-30