How to Measure Athlete Development (And What Most Assessments Miss)
How to Measure Athlete Development (and What Most Assessments Miss)
Modern performance testing is excellent at measuring what an athlete can produce.
Coaches can quantify:
• Power
• Velocity
• Force
• Jump height
• Sprint time
• Bar speed
These metrics are valuable because they establish capability.
But athlete development is broader than a single output.
The more important question is:
How is performance changing over time?
What Most Assessments Miss
Traditional assessments often emphasize peak values:
Best rep. Fastest sprint. Highest jump. Greatest power.
Those measures tell us what happened at one point in time.
They do not always reveal:
• Is performance becoming more repeatable?
• Does it hold up as demands change?
• Can higher output be developed without losing stability?
• Can previously established performance be re-attained?
Two athletes can produce similar peak numbers while showing very different developmental profiles.
That is why measuring capacity is not the same as understanding development.
A Developmental View of Performance
EVZ™ organizes athlete development around four phases:
Retention → Transfer → Output → Re-attainment
Retention
Establish stable, repeatable output.
Transfer
Evaluate how performance carries across changing demands.
Output
Develop repeatable, higher performance.
Re-attainment
Restore previously established output.
These phases provide context for understanding not only what an athlete produced, but what should be developed next.
Measure More Than the Peak
A more complete assessment should examine performance across repeated and changing exposures.
Useful questions include:
• Does output remain stable?
• Where does performance begin to change?
• How does the athlete respond to increased demand?
• Is performance becoming more consistent?
• Can an established profile be reproduced later?
This allows coaches to identify patterns that a single maximum value may miss.
Observation, Technology, or Both
Athlete development does not have to be evaluated through one specific device.
EVZ can organize evidence through:
Observation | Technology | Hybrid
Technology can provide objective measures such as power or velocity.
Structured observation can capture execution and performance quality where technology is unavailable or incomplete.
Different evidence can answer the same developmental questions.
Where RPI™ and EVZ Wave™ Fit
RPI™ provides a retention/repeatability signal where appropriate.
EVZ Wave™ evaluates how performance behaves across progressive demands and whether the established profile can be re-attained.
Neither replaces traditional testing.
They add developmental context to it.
From Measurement to Decision
Performance data is most valuable when it changes what the coach does next.
EVZ follows a simple process:
Intent → Evidence → Interpretation → Decision → Outcome
The goal is to determine:
• What is the athlete showing?
• What does it mean developmentally?
• What should be emphasized next?
The Bigger Idea
Peak testing tells coaches what an athlete can produce.
Developmental assessment helps explain how that performance is evolving.
Both matter.
But if the goal is long-term athlete development, the assessment process should look beyond isolated outputs and examine whether performance is becoming more repeatable, adaptable, developable, and recoverable over time.
Measure capability. Understand development. Make better decisions.
