Seven studies. 201 athletes. Five databases screened. This is what a meta-analysis looks like when the data actually tells a clean story.

Flywheel resistance training outperformed traditional weight training on change of direction performance with a standardized mean difference of 0.64. That might sound small. It isn't. The within-group effect for flywheel training came in at 1.63 — a large effect by any statistical convention. Traditional weights produced 0.62. The gap is real and it's consistent across every included study.

But the dose findings are where it gets interesting. Two sessions per week outperformed three. Twelve total sessions produced larger effects than seventeen. More training volume didn't just fail to add benefit — it actively reduced the effect size. The research points to one clear mechanism. Flywheel devices create eccentric overload that traditional weights simply cannot replicate at the same intensity. Eccentric strength drives the braking phase of a cut. Better braking means faster re-acceleration. Faster re-acceleration means the athlete gets there first.

This episode breaks down every layer of the research — the methodology, the effect sizes, the dose-response relationships, and what it all means for how coaches should actually be programming agility work. The data has spoken. The question is whether the training world is listening.