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TrackFIT Report · 100 Meter Dash
Girls 100M Dash — 12.02
This report shows the result, the mechanical “why,” and the exact solutions to move the time.
Athlete
Athlete A (HS Girl)
Age Group
17–18
Height / Weight
5'6" / 128 lb
Conditions
Outdoor · Wind +0.6
Summary
12.02
100m official time
TrackFIT Score
63
Room to climb
Motion DNA Signature
58
Developing pattern
Max Velocity
8.62 m/s
~19.3 mph
Accel Peak
4.05 m/s²
0–30m
Speed Drop
-5.4%
80–100m
Fastest wins
You’re giving away time in transition (30–60) and late-race force retention (80–100).
Primary lever
Hold mechanics at max velocity longer — stop the late “reach + brake” cycle.
Result
Splits + Velocity
Where the race was built, where it leaked, and where it can be reclaimed.
Segment Splits
Reaction
0–30
30–60
60–100
Reaction (est.)
0.17 s
Competitive HS range
0–10m
1.95 s
Needs stronger first 6 steps
0–30m
4.40 s
Good push, modest projection
30–60m
3.15 s
Transition leak (over-stride)
60–80m
2.20 s
Near peak speed window
80–100m
2.27 s
Braking shows up late
Total (100m)
12.02 s
Wind legal
Velocity Curve (by 10m)
m/s
What it means
Peak velocity shows up around 50–60m, then the curve bends down late. That late bend is where 0.08–0.16 seconds lives.
Mechanics
Stride + Contact + Braking
This is the “why” behind 12.02 — and the exact system to move it.
Stride Profile
Avg stride length (60–80m)
1.93 m
Target range: 1.98–2.06 m
Cadence (60–80m)
4.46 Hz
Target range: 4.55–4.80 Hz
Stride symmetry
94%
Right side begins to lag late
Contact + Flight
Contact time (60–80m)
0.102 s
Target: 0.090–0.098 s
Flight time (60–80m)
0.125 s
Too much “pop up” in transition
Vertical oscillation
6.4 cm
Target: 4.8–5.6 cm
Braking Indicators
Heel-to-COM strike offset (late)
+10.8 cm
Target: +3 to +7 cm
Braking impulse (80–100m)
High
Reaching creates decel
Posture collapse (late)
-6°
Hips drop → stride reaches
Effort
Total Effort + Total Impact Forces
Not just a time — what the race cost, and how efficiently it was converted into speed.
Forces (Resultant / Propulsion)
lbs
Peak resultant force
620 lb
Early acceleration phase
Average resultant force
420 lb
Across the full 100m
Total effort (resultant force)
31,900 lb
Race cost metric (sum across contacts)
Impact (Ground Contact Load)
lbs
Peak impact load
760 lb
Max velocity contacts
Average impact load
540 lb
Across the full 100m
Total impact load
40,800 lb
Stress cost metric (sum across contacts)
Efficiency read
Late-race impact stays high while speed drops — that’s a signature of reaching + braking. The goal is to keep impact stable while maintaining velocity.
Solutions
What to do next
Built to reduce braking, lock posture, and extend max velocity.
Fix the transition (30–60m)
- Keep shin angles driving longer (don’t stand up early).
- Eliminate the first reach step — step down under hips.
- Cue: “Hips tall, feet fast, punch down.”
Target change
Reduce contact time from 0.102 → 0.096 sec at 60–80m.
Hold max velocity (60–100m)
- Stiff ankle + quick ground: don’t “sit” late.
- Arms: shorter swing, faster turnover late.
- Fix posture: ribcage stacked over hips.
Target change
Speed drop -5.4% → under -3.0% from 80–100m.
Power that transfers
- Single-leg strength: keep hips from dropping late.
- Elastic reactivity: pogo + wicket rhythm.
- Short hill accelerations to sharpen first 10m.
Target change
Improve 0–10m from 1.95 → 1.90 sec.
Projected upside (if targets hit)
Holding max velocity + reducing late braking will allow this athlete to move from 12.02 into the 11.80–11.90 range without changing talent — just improving biomechanics + fitness.
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