Oura adds Cardio Effort and automatic VO2 Max to its rings

Oura has added Cardio Effort and automatic VO2 Max to its smart rings, aiming to help users understand how exercise affects their cardiovascular health over time. Cardio Effort assesses workout intensity and duration against a personal baseline, and can indicate when recovery may be more useful than increasing effort.

Both features are available on the Oura Ring Gen 3 and later for members. Cardio Effort rates weekly activity from Light to Reaching; automatic VO2 Max is a beta feature in Oura Labs that activates after five qualifying GPS-enabled walks, runs or hikes, replacing the previous six-minute walking calibration test.