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Brooke E. | Predicted Mile Assessment
Your repeat-speed performance shows strong early rhythm, followed by increasing stride compression and reduced usable forward effort late in the challenge. This report identifies where those seconds are lost and the physical qualities that can help you close the gap.
Your Four Performance Results
Today, immediate opportunity, the next 6–18 months and lifetime physical capacity.
Your mile performance calculated from the 16 × 100m TrackFIT Challenge.
Your current movement-capacity result with the identified speed and stride losses corrected.
Your next development range through improved strength, stride retention and aerobic capacity.
The maximum long-term mile capacity identified by your TrackFIT body profile.
A stopwatch tells you what happened. TrackFIT shows you why.
Your 5:41.0 mile result shows what your performance looks like with the movement losses identified in this assessment. Your current potential of 5:02.7 places an immediate emphasis on force transfer and maintaining stride length. Your next development phase builds the capacity to keep that efficiency over the entire mile.
Repeat Speed & Fatigue Response
How your pace changes over 16 × 100m and where the greatest performance losses begin.
Repetition speed across the challenge
The 100m time increases gradually across the four blocks, with the greatest mechanical changes appearing after rep 11.
What the four blocks show
Brooke opens with strong repeat speed and maintains a usable movement pattern through the first half of the challenge. In later reps, the stride becomes shorter while more contacts are required to cover the same 100m distance. That raises the demand on every step.
The 16 × 100m repetitions cover 1,600m; the mile result is a separate TrackFIT performance output, not a continuous timed mile run.
100m repetition phase breakdown
| Challenge block | Avg 100m | Avg speed | Avg steps / 100m | Avg step length |
|---|---|---|---|---|
| Reps 1–4 | 16.3 s | 13.7 mph | 67.25 | 58.5 in |
| Reps 5–8 | 16.7 s | 13.4 mph | 69.25 | 56.9 in |
| Reps 9–12 | 17.1 s | 13.1 mph | 71.25 | 55.3 in |
| Reps 13–16 | 17.5 s | 12.8 mph | 73.50 | 53.6 in |
Step Length, Frequency & Retention
Each repetition covers the same 100m distance, allowing stride mechanics to be compared consistently.
Step length across four blocks
The progression from 58.5 to 53.6 inches identifies the increasing contact demand behind your late-repetition time loss.
Step count per 100m
As step length declines, 100m contact count increases from 67.25 to 73.50 per repetition.
Stride retention is the clearest efficiency opportunity
Brooke takes more steps late because each contact carries her a shorter distance. Development should focus on preserving posture, hip extension, elastic rebound and rhythm so more of her existing speed survives deep into the effort.
Impact & Effort Forces
How much useful forward effort you deliver, how much load you absorb, and how the two change under fatigue.
Usable Effort Force by repetition block
Usable propulsive force declines from 51 to 44 pounds per step as fatigue changes Brooke’s movement mechanics.
Impact Force by repetition block
Impact per contact decreases moderately, but the number of contacts needed to complete 100m increases later in the session.
Impact & Effort Force comparison
| Phase | Effort Force / step | Impact Force / step | Effort / Impact |
|---|---|---|---|
| Reps 1–4 | 51 lbs | 405 lbs | 12.6% |
| Reps 5–8 | 49 lbs | 396 lbs | 12.4% |
| Reps 9–12 | 46 lbs | 387 lbs | 11.9% |
| Reps 13–16 | 44 lbs | 378 lbs | 11.6% |
The cumulative force indexes sum readings across contacts and are workload measures, not a single instantaneous force or a weight being lifted.
Preserve Effort Force as fatigue increases
Brooke’s target is to maintain more useful forward-directed effort late in the challenge, not to increase impact. More consistent foot placement, elastic recovery and posterior-chain control can help reduce the difference between the force she produces and the force that contributes to speed.
Motion DNA™ & TrackFIT Score
Your movement profile identifies the qualities protecting your performance and the limitations reducing it.
Motion DNA™ movement signature
Motion DNA™ type
Repeatable speed with late stride compression
Strong early rhythm is followed by a progressive loss of stride length, a greater step count and reduced usable force in later repetitions.
Individual movement scores
Execution
Your posture, timing, and movement quality across the challenge.
Result
Your performance and repeatability across the timed repetitions.
Pound-for-Pound
Your useful force output in relation to your 128-pound bodyweight.
What Closes the Gap
Your performance gaps point to specific movement and physical-development priorities.
01 · Hamstrings & glutes
Preserve hip extension when fatigue begins to compress your stride. The goal is to maintain late-repetition stride length without reaching ahead or losing rhythm.
02 · Calves & Achilles
Develop elastic ground-contact control. Improve the consistency of force entry and release so each late contact contributes more forward movement.
03 · Trunk and hip control
Improve torso stability and leg recovery as repetitions progress. Strong alignment reduces wasted movement and supports consistent foot placement.
What happens after repetition 11
Brooke’s 100m rep times rise from 16.3 seconds in the opening block to 17.5 seconds in the closing block. Her average step length falls by 8.5%, and each late 100m requires more ground contacts. This explains where performance is being lost and why late-race efficiency is a priority.
What to develop over the next training phase
Develop greater aerobic capacity, stronger posterior-chain endurance, more resilient elastic contacts and consistent sprint mechanics. These changes support the progression from today’s potential toward her next mile target.
Performance Development Plan
The measurable priorities that should guide training and the next TrackFIT assessment.
First priority · Hold stride length
Target higher late-repetition stride retention with quality repeat runs, posterior-chain strength work, and disciplined ground-contact rhythm. Monitor the final four repetitions closely.
Second priority · Improve force transfer
Develop stable foot placement and ankle elasticity so usable Effort Force remains higher as fatigue increases. Emphasize efficient contacts rather than heavier impacts.
Third priority · Increase aerobic capacity
Improve sustained running capacity and repeat-effort recovery while preserving movement quality. The next assessment should show a smaller difference between opening and closing repetition times.
Next TrackFIT assessment
Compare average 100m time, total steps, late-repetition step length, stride retention, usable Effort Force, Impact Force and TrackFIT Score. Improvement in these areas will show how effectively Brooke is closing the gap between current performance and true potential.