Countermovement jump (CMJ) testing is the backbone of neuromuscular monitoring in elite football. In the 2024–25 Premier League season alone, more than 33,000 CMJ tests were captured on ForceDecks. Across all VALD systems, over 140,000 tests were uploaded to the league’s data lakehouse, giving unprecedented visibility of weekly and seasonal trends.
At 292 Performance, the athletes we work alongside have a current average of 44.9 cm, with nine athletes clearing 50 cm. Against league percentiles, that places us above the Premier League 75th percentile at 43 cm.
What Separates Elite from Very Good?
Two CMJ metrics consistently distinguish Premier League athletes from lower divisions:
- Concentric Impulse in the first 100 ms (CI100)
- Eccentric Deceleration Rate of Force Development (EDRFD)
Premier League players show clear advantages in both, with EDRFD more than 15% higher than Championship averages. These time-constrained metrics are powerful because they:
- Profile athletes beyond jump height
- Respond sensitively to short- and long-term load
Coaching point: If your monitoring relies solely on jump height, you’re missing the qualities that distinguish the top level. CI100 and EDRFD reveal intent, braking control, and readiness.
The Weekly Signal We Use
League-wide data shows the lowest CI100 and EDRFD values early in the week, with peaks typically on Friday. This pattern suggests that when the week is structured well, athletes arrive at match day (assuming Saturday) with improved braking and early-phase concentric qualities.
Coach application for a Saturday game:
- Monday–Tuesday: Expect suppressed CI100 and EDRFD. If numbers dip below baseline, hold back high eccentric load.
- Wednesday–Friday: Target the qualities you want high at the weekend. A rise in CI100 and EDRFD by Friday is a positive readiness cue.
The Seasonal Story
Across the league, CI100 and EDRFD tend to climb as the football season progresses, peaking in May. This looks counterintuitive if you view monitoring only through a fatigue lens. Instead, it suggests elite squads adapt positively in reactive and braking qualities when exposure and preparation are well managed.
Coach application:
Set quarterly targets for CI100 and EDRFD, not just jump height. Aim for progressive improvement, not maintenance.
Strength Relationships
Hamstring strength remains critical. VALD’s league data shows how to normalise eccentric Nordic strength for body mass using allometric scaling. Pair NordBord outputs with sprint metrics using the Quadrant of Boom to flag players at risk because speed is high but eccentric strength is low – or vice versa.
Hip adductor strength trends also matter. Monitoring ADD:ABD ratios through the season gives useful context for sprinting demands and potential groin risk.
How We Apply This at 292 Performance
- Define green and red zones for CI100 and EDRFD per athlete. Use rolling weekly averages with a Friday target and Monday caution zone (assuming a Saturday fixture and no midweek game)
- Prescribe eccentric work when EDRFD is suppressed. Pair slow tempo decel patterns with overloaded absorb drills.
- Link speed and hamstrings. Map NordBord peaks against 20–30 m velocity to place each athlete on the Quadrant of Boom and adjust exposure.
- Set seasonal checkpoints. Expect CI100 and EDRFD to be the highest late season, then audit whether microcycle design and player availability are driving the same pattern in your squad.
What This Means for Coaches
- Jump height is the headline number, but the decision numbers are CI100 and EDRFD.
- The best weeks end with high Friday values in these metrics—not just big jump heights.
- Positive seasonal adaptation is possible when you monitor and program to it.
Actionable Takeaways
- Stop relying on jump height alone—track CI100 and EDRFD weekly.
- Use Monday–Friday trends to guide load and readiness, assuming a Saturday fixture.
- Pair strength diagnostics with speed metrics for risk profiling.
- Set quarterly targets for braking and concentric qualities.
Learn more about 292 Performance data here
