Injury Risk (Analysis)
Your injury risk score on the Performance tab — bands, factors, and how PIRX calculates it. Also shown as colored rings on the Calendar.
Injury Risk also appears on the Calendar as part of each day's green, yellow, or red training status ring, including a 14-day forecast. See Predictive Injury Calendar.
Source: (inline in performance/page.tsx)
What You See
A score out of 100 with a colored band label: Low (green, below 35), Moderate (yellow, 35-59), or High (red, 60+). A description explains the risk factors. A 'Why this number?' panel shows individual risk factors with their impact.
How the Numbers Work
Injury risk is calculated from your recent training load, how consistent your training has been, and physiological strain signals. A sudden spike in training load (high ACWR), combined with poor sleep or high stress, increases the risk score. The band thresholds are: Low below 35, Moderate from 35 to 59, and High at 60 or above.
Step by Step
Method used: rule-based load and recovery scoring
Injury risk is a rule-based score from your recent training. Inputs are current ACWR, 7-day load spike, weekly distance change, pace variance, sleep score, and HRV trend. A training gap longer than 14 days after an activity with ACWR above 1.4 raises the score (gap days / 30, capped at 1). If pace also worsened by more than 10 percent, the score is raised to at least 0.7. The result is scaled to 0-1. Bands: below 0.35 = Low (green), 0.35-0.60 = Moderate (yellow), 0.60+ = High (red). The 'Why this number?' panel lists the inputs that moved the score.