Oura adds Cardio Effort and automatic VO₂ max without walking test

Oura has introduced Cardio Effort, which scores workout cardiovascular load using TRIMP and totals it weekly, plus an updated VO₂ max that is estimated automatically from GPS workouts instead of a six-minute walking test. Both features are available on Oura Ring Gen 3 and newer, with VO₂ max launching through Oura Labs.

• Cardio Effort sorts weekly load into five categories: Light, Fair, Maintaining, Building and Reaching
• Scores use the TRIMP framework and factor in both workout duration and intensity
• VO₂ max is estimated after five GPS workouts in ml/kg/min with a rating from Low to Peak
• Features work on Oura Ring Gen 3 and newer; no full rollout date for VO₂ max yet