The LJP journal

Ideas behind the work.

Training, sports science and athlete development. Articles by Luis Jeronimo.

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The LJP approach · 2026-09-15

What LJ Performance Actually Is

A complete soccer high performance system usually only seen at the professional levels.

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Coaching & leadership · 2026-09-07

Buy-In Is the Real Metric

A dashboard is only as honest as the relationship behind it.

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Youth performance · 2026-08-31

The Wall Every Athlete Hits Around Minute Sixty

It's rarely conditioning. Most of the time, it's what your athlete ate three hours before practice.

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Speed development · 2026-08-24

Why Your Kid's Speed Drills Aren't Making Them Faster

Ladders and cones build coordination. They don't build speed. Here's the difference.

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Training & recovery · 2026-08-17

Don't Chase Fatigue. Chase Adaptation.

Why more training doesn't always mean more progress.

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