1.05+
Wingspan-to-height ratio elite
65–80
mL/kg/min VO2 max (distance)
180°+
Target overhead shoulder ROM
500K+
Shoulder revolutions per year
Biomechanical Analysis
What your body
needs to excel.
Athlete Profile assesses the specific biomechanical traits that predict elite performance in Swimming. These aren't generic fitness metrics — they're sport-specific physiological signatures.
Glenohumeral Kinematic Efficiency
The stroke mechanics foundation
Swimming stroke efficiency is dominated by glenohumeral joint mechanics. Internal rotation capacity, scapular upward rotation, and posterior capsule mobility determine catch-to-pull force application angle. Restrictions create compensatory thoracic rotation that increases drag and elevates rotator cuff impingement risk.
Wingspan-to-Height Anthropometric Ratio
Structural drag coefficient advantage
Elite swimmers average a wingspan-to-height ratio of 1.05–1.10 vs 1.00 for the general population. Greater wingspan reduces frontal surface area relative to propulsive limb length, lowering hydrodynamic drag. This fixed structural advantage is quantified in your Athlete Profile anthropometric profile.
VO2 Max & Lactate Threshold
The aerobic engine for distance events
Distance swimming (400m–1500m) requires sustained aerobic power at 85–95% VO2 max. Elite distance swimmers reach VO2 max values of 65–80 mL/kg/min. Your Athlete Profile aerobic capacity proxy — derived from sprint and shuffle recovery metrics — estimates your aerobic fitness band.
Rotator Cuff Kinetic Chain
The overuse injury predictor
Swimmers perform 500,000–1,000,000 shoulder revolutions per year. The rotator cuff must maintain glenohumeral centration across this extraordinary volume. Posterior rotator cuff weakness combined with anterior capsule laxity is the leading cause of swimmer's shoulder and career interruption.
What Athlete Profile Measures
Your Swimming
assessment report.
Propulsive Arm Power
Your tennis ball overhand throw peak velocity and kinetic chain efficiency score predict propulsive pull-phase force application — the primary determinant of swimming speed at elite levels.
Limb Segment Ratios
Short torso-to-limb ratios reduce undulation drag. Foot size relative to height predicts fin-like propulsive surface area — a genuine physiological advantage in kicking-dominant strokes (breaststroke, butterfly).
Anaerobic Power (Sprint Events)
50m and 100m events are 50–80% anaerobic. Your CMJ peak power and sprint acceleration profile predict Type IIa/IIx fiber recruitment — critical for sprint swim event performance.
Bilateral Stroke Symmetry
Pull-phase force asymmetry between dominant and non-dominant arms creates lateral drift that increases effective swim distance per lap. Your symmetry score predicts this inefficiency before it becomes a technical habit.
Sample Swimming Fit Report
What you'll receive after your assessment
Sport Fit Score
1.05+
Percentile-ranked against age + sex-matched athletes
Biomechanical Grade
A–F
Per-trait scoring across all 5 assessment dimensions
Injury Risk Flags
4 tracked
Sport-specific injury predictors with corrective roadmap
Swimming-Specific Injury Predictors We Screen
"
My wingspan-to-height ratio is 1.08. Athlete Profile explained in clinical terms why I've always felt 'built for the water.' Now I have data to back it up.
Kai L.
Athlete · 16 years old