About
Adaptiv is a coaching decision engine that adapts training daily using both physiology and athlete perception. It preserves the long-term structure that makes training work.
Training philosophy
The engine is grounded in the same principles used by elite coaches, applied automatically every day.
Progressive overload with built-in recovery
Training load increases across a 3-week build, followed by a recovery week at reduced volume. This 3:1 cycle is the foundation of sustainable endurance development. The engine protects this structure even when it adjusts individual sessions.
Load ratio as a continuous signal, not a threshold
Comparing short-term training load to your long-term baseline is one of the most validated injury-risk signals in sports science. Rather than flipping a recommendation at a single cutoff number, Adaptiv blends load ratio, recovery, and training monotony into a continuous risk score. Adjustments scale proportionally.
Subjective data is first-class
How you feel matters as much as what the numbers say. Your fatigue, soreness, and energy ratings carry equal weight to objective HRV and resting HR data in the recovery score, because athletes know their bodies, and biometrics lag lived experience by 24 to 48 hours.
Heart rate-based load, not just time
Training load is calculated using TRIMPexp, a heart rate reserve method that applies an exponential intensity curve. An easy hour and a hard hour are not equal. An hour at threshold produces roughly 3 to 4 times the physiological load of an easy aerobic hour.
Phased training periodization
Plans progress through three phases: base building with hills or fartlek, strength with interval work, and race-specific sharpening with tempo. Each phase builds on the last. Intensity zone tracking confirms the athlete is actually spending time where the plan intends.
Health before performance
When race date and build rate conflict, Adaptiv shortens the plan rather than compressing the progression. Slightly undertrained and healthy beats overtrained and injured every time.
Integrations
Your workouts and biometrics sync automatically so your training data is always current. No manual entry required.
Strava
Activities sync automatically after every workout. HR data, per-mile splits, and lap data feed directly into load and zone calculations.
Apple Health
Morning sync via a custom Shortcut: HRV, resting HR, and sleep stages delivered to Adaptiv before you open the app.