The LJP journal

Ideas behind the work.

Soccer coaching, sports science and player development. Articles by Luis Jeronimo.

8 articles

Inside a FIFA Window: 5 Matches. 15 Days. 4 Countries.
YouthProFamiliesCoaches

Pro performance · 2026-10-07

Inside a FIFA Window: 5 Matches. 15 Days. 4 Countries.

What it takes to keep a pro available when the calendar gives you nothing.

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Inside a Pro's Program
ProCoaches

Professional performance · 2026-09-21

Inside a Pro's Program

What actually changes when the athlete in front of me plays professionally — and what doesn't.

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YouthFamilies

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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LJP Thumbnail BuyInRealMetric
Coaches

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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YouthFamilies

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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LJP Cover SpeedDrills
YouthFamiliesCoaches

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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Blog 1
YouthProCoaches

Training & recovery · 2026-08-17

Don't Chase Fatigue. Chase Adaptation.

Why more training doesn't always mean more progress.

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