Track What
Truly Matters
The Aletheia sensor provides in-depth analysis of crucial aspects of your running form to help you run smarter, safer, and for longer. Unlock insights that go beyond pace and distance.
Performance
Optimize efficiency
Injury Indicators
Prevent injuries early
Gait Cycle
Investigate your gait
Three Categories
Comprehensive Analysis
From Every Angle
Performance Metrics
Unlock your full potential with detailed performance metrics that guide your training and help you achieve your best results.
Key Metrics
Injury Indicators
Reduce the likliehood of injuries with in-depth diagnostics that highlight potential risk factors and guide corrective actions.
Key Metrics
Gait Cycle Metrics
Master your running cycle with detailed timing analysis across all four phases plus critical metrics like cadence and contact time.
Key Metrics
Performance Metrics
Optimize Your
Running Performance
Overall Score
A comprehensive assessment of your running biomechanics, combining all performance and injury prevention metrics.
Why It Matters
Quick snapshot of overall running health
Tracks long-term improvement and training effectiveness
Identifies whether form issues are widespread or isolated
Indicates when to focus on form work vs. volume training
Efficiency
Measures how economically you use energy while running. Higher score means more forward motion for the same effort.
Why It Matters
Better efficiency means running longer without fatigue
Reduces wasted energy and improves performance
Directly correlates with running economy and race times
Helps prevent early fatigue in long runs
Braking
Measures deceleration forces when your foot lands ahead of your center of mass. Less braking = more efficient momentum.
Why It Matters
Excessive braking wastes energy and slows you down
Creates unnecessary stress on knees and shins
Often caused by overstriding (heel-first too far forward)
Major factor in running economy and speed
Impact
Measures the ground reaction forces when your foot strikes. Lower impact reduces stress on joints and decreases injury risk.
Why It Matters
High impact forces linked to stress fractures and joint pain
Cumulative impact stress can lead to overuse injuries
Lower impact improves running economy
Especially important for older runners and those with joint issues
Sway
Measures lateral (side-to-side) movement. Lower sway means energy is directed forward rather than wasted on side movement.
Why It Matters
Excessive sway wastes energy that should propel you forward
Can lead to IT band syndrome and hip pain
Reduces running efficiency and increases fatigue
Often indicates weak hip stabilizers or core muscles
Variation
Measures consistency of your stride pattern. Lower variation means more consistent, efficient movement each step.
Why It Matters
Consistent stride pattern indicates good form and conditioning
High variation can signal fatigue or muscle imbalances
Affects running efficiency and injury risk
Important indicator of overall running economy
Warmup
Measures warmup quality at the start of your run — how prepared your body is before settling into pace.
Why It Matters
Proper warmup reduces injury risk significantly
Improves performance by preparing muscles and joints
Helps you find your optimal pace more quickly
Prevents the 'heavy legs' feeling early in runs
Endurance
Measures how well you maintain your running form and efficiency over the full duration of a run.
Why It Matters
Good endurance prevents form breakdown that leads to injury
Allows you to maintain pace throughout long runs
Indicates proper conditioning and training adaptation
Essential for race-day performance
Injury Indicators
Reduce
Injury Risk
Hip Mobility
(Left & Right)
Measures the range of motion in your hip joints during running. Good hip mobility allows for longer, more efficient strides.
Why It Matters
Limited hip mobility restricts stride length and efficiency
Poor hip mobility increases lower back and knee pain risk
Affects your ability to maintain proper running posture
Critical for power generation during the push-off phase
Directly impacts injury risk in hips, IT band, and knees
Hip Stability
(Left & Right)
Measures your ability to control hip movement and prevent excessive drop or rotation during stance. Strong, stable hips are essential.
Why It Matters
Weak hip stability causes knee valgus (knee caving inward)
Primary factor in IT band syndrome and runner's knee
Unstable hips lead to compensatory movements and injuries
Affects your ability to maintain form when fatigued
Critical for preventing stress fractures and hip pain
Portrait Symmetry
Measures balance between your left and right sides across all biomechanical metrics. Good symmetry indicates balanced muscle development.
Why It Matters
Asymmetry increases injury risk significantly
Uneven loading causes overuse injuries on the stronger side
Indicates potential muscle imbalances or past injuries
Affects running efficiency and energy expenditure
Can reveal compensation patterns from old injuries
of runners sustain an injury annually
of running injuries are from overuse
of injuries stem from poor biomechanics
Take Control of Your Injury Risk
Early detection of biomechanical issues is key to staying healthy.
Gait Cycle Metrics
Master Your
Running Cycle
The Four Phases
Your running gait is divided into four distinct phases, each playing a critical role.
Landing
15–20%Initial contact phase when your foot first touches the ground. Sets up the entire stride and affects impact forces.
Stabilizing
25–30%Mid-stance phase where body weight is fully supported on one leg. Hip and core stability are crucial.
Launching
35–40%Push-off phase where you generate propulsive force. This is where power and forward momentum are created.
Flying
20–25%Swing phase when both feet are off the ground. Flight time indicates your vertical power and running economy.
Typical Phase Distribution
17.5%
27.5%
32.5%
22.5%
Note: These percentages represent typical values. Your individual gait cycle may vary based on speed, fatigue, and running style.
Critical Timing Metrics
Additional metrics that provide deeper insights into your running mechanics.
Cadence
Optimal: 170–180 spmThe number of steps you take per minute. Higher cadence is generally associated with better running economy and reduced injury risk.
Why It Matters
Higher cadence reduces overstriding
Decreases impact forces on joints
Improves running efficiency
Associated with lower injury rates
Flight Time
Optimal: 80–120 msTotal time both feet are off the ground during each stride. Reflects your power output and stride characteristics.
Why It Matters
Indicates vertical power generation
Correlates with stride length
Marker of explosive strength
Varies with speed and terrain
Contact Time
Optimal: 200–250 msDuration your foot is in contact with the ground. Shorter contact times generally indicate better running economy and power.
Why It Matters
Shorter contact = more reactive running
Indicates leg stiffness and power
Key metric for running economy
Elite runners have shorter contact times
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Track Every Metric.
Master Your Form.
Real-Time Tracking
Monitor your metrics live during every run
Historical Analysis
Track progress and trends over time
Personalized Insights
Get feedback tailored to your unique form
Actionable Drills
Receive exercises to improve weak areas
Reduce Injury Risk
Catch problems before they sideline you
Performance Goals
Set and achieve measurable targets