Fitness: is typically the 4-week (28-day) average, acute workload. This value provides a clear indication of what an athlete has achieved, leading up to the present training session — or race day.
Form: is calculated by fatigue-fitness and represents the athlete’s condition. Higher form indicates the athlete can perform well. Usually, during the training period, the form range is about -10 to -30
Fatigue: is an indexed representation of the workload performed by an athlete in a week (7 days).
Stress: is calculated by the cumulated training duration (in minutes) for the 5 heart-rate zone model, multiplied by a coefficient respective to each zone.
Readiness: The fitness vs fatigue ratio represents the level of readiness or “freshness”. The actual value resulting from this ratio will have a practical significance. With careful planning and due alteration, it can help reduce the risk of injury. Namely:
Under-training: < 0.80
Optimal workload: 80 – 1.30
Over-training: > 1.50
