Collaborate Sports
Practitioner Framework

Youth Athlete
Development
& PHV Guide

This framework guides evidence-based programming decisions for youth athletes across two intersecting axes: training experience (Foundation 0–2 yrs · Development 2–5 yrs · Performance 5+ yrs) and maturation stage (Pre PHV · Circa PHV · Post PHV). Maturation stage takes priority over training age in all load and injury risk decisions.

How to use
1
Identify training phase (row)
›
2
Identify maturation stage (column)
›
3
Select cell to open guidance
›
4
Tab through each physical quality
Risk key
Developmental opportunity
Moderate caution
High caution / elevated risk
Progressing quality
Pre PHV
Circa PHV
Post PHV
Foundation
0–2 years S&C
Motor literacy
Foundation × Pre PHV
Coord. sensitive periodLow structural riskMovement literacy first
Foundation × Circa PHV
Highest structural riskNo external loadProtect and educate
Foundation × Post PHV
First load windowHormonal support presentFemale: ACL risk elevated
Development
2–5 years S&C
Neural qualities
Development × Pre PHV
Neural quality windowDual adaptation availableLoad progressing
Development × Circa PHV
Hardest combinationMandatory load reductionRegression is normal
Development × Post PHV
Strength norms meaningfulBlock periodisationFemale: ACL + RED-S
Performance
5+ years S&C
Transfer & power
Performance × Pre PHV
PHV incoming — plan nowHigh movement qualityEstablish all baselines
Performance × Circa PHV
Dropout risk criticalProgramme reset requiredMentorship over programming
Performance × Post PHV
Full training capacityIndividualise everythingFemale: RED-S + cycle monitor
Select a cell to beginTap any cell above to load full physiological guidance for that training phase × maturation combination