Form & Biomechanics
Cadence, foot strike, overstriding, arm carriage — the form interventions that move the needle.
10 articles · sorted by most recent
Heel Strike vs Forefoot Strike: What the Research Actually Says About Injury Risk and Running Economy
Forefoot strikers show fewer overuse injuries only in retrospective data. The best review (53 studies) says an uninjured heel striker shouldn't switch, since forcing it cost economy.
Stroke Rate vs Distance Per Stroke: Diagnosing Why Your Swim Times Have Plateaued
Stroke length predicts speed at 50m (rho up to 0.57), but at 800-1500m stroke rate takes over (rho up to 0.45). Your fix depends on the distance you race.
Does Running Stride Variability Predict Injury? What 21 Studies Found
A 2025 scoping review of 21 studies found injured runners had higher stride variability in 52% of comparisons, lower in 24%, and no difference in 38%. No normal range exists.
Does Arm Swing Really Cut Running's Metabolic Cost by 13%?
Losing your arm swing raises running's metabolic cost 3% to 13%, depending on how much the arms are restrained. No study shows coaching a better swing improves economy.
Transitioning to Minimalist or Zero-Drop Shoes Without Getting Injured: The Timeline the Research Supports
A 'safer' transition shoe caused more injuries than going straight to zero-drop in a real RCT. Here's the week-by-week ramp the research supports, and why injuries often hit at month 2.
Cycling Cadence and Knee Pain: What the Patellofemoral Load Research Actually Shows
Halving cadence roughly doubles per-stroke pedal force at fixed power, but the most-cited cadence-knee study found no significant effect. The research is messier than it looks.
Mouth Taping and Nasal Breathing for Runners: What the Science Really Says
Nasal-only breathing cuts peak VO2 by 16% at max effort but may help on easy runs, and mouth tape itself has zero controlled trials behind it.
Downhill Running Causes 3x More Muscle Damage Than Flat Running
Downhill running can spike creatine kinase by more than 600% and cut leg strength for days. One easy pre-training session cuts that damage nearly in half.
Running Shoe Rotation: The 39% Injury Reduction Study and How Many Pairs You Actually Need
A 264-runner study found rotating shoes cuts injury risk by 39% (HR 0.61, 95% CI 0.39–0.97). Here's the real mechanism and how many pairs you actually need.
The 180 Cadence Myth: Your Stride Rate Isn't Broken
180 spm isn't a target — it's a population mean from elite race-pace data. A 6'2" runner at 162 spm is normal; forcing 180 raises injury risk and wastes energy.