The VO2max, or Heart Rate Recovery assessment is an adaption of the Tecumseh step test that measures VO2Max using the smartphone camera and flash. The assessment follows a protocol where participants step up and down at a fixed cadence for 3 minutes followed by monitoring of heart rate recovery for 60 seconds. Data collected from this assessment includes VO2max estimation, heart rate estimation, and summarized video pixel intensities.

Validation Status

• Validated in a cohort of 120 individuals spanning ages 20-80 by comparing to direct measurement of O2 consumption using mask and exercise protocol.

Example studies that have used the test

• All of Us Research Program Heart Snapshot Study. Publication in preparation.

Sample Data

Coming soon