6th vital sign app: Testing validity and reliability for measuring gait speed.BACKGROUND
 Is the 6th Vital Sign app valid and reliable for measuring gait speed?


 Speed was recorded by the 6th Vital Sign app, Brower timing gates, and by hand-measurement of distance walked divided by the 2 min.  Therefore, we conclude that the 6th Vital Sign app is not valid for use for clinical diagnosis or prognosis.
6th Vital Sign app
Speed was recorded by the 6th Vital Sign app, Brower timing gates, and by hand-measurement of distance walked divided by the 2 min. 
Brower timing gates