Accuracy and Usability of a Self-Administered 6-Minute Walk Test Smartphone Application.

ABSTRACT:

Background

The 6-minute walk test (6MWT) independently predicts congestive heart failure severity, death, and heart failure hospitalizations, but must be administered in clinic by qualified staff on a premeasured course. As part of the Health eHeart Study, we sought to develop and validate a self-administered 6MWT mobile application (SA-6MWTapp) for independent use at home by patients.

Methods and results

We performed a validation study of an SA-6MWTapp in 103 participants. In phase 1 (n=52), we developed a distance-estimation algorithm for the SA-6MWTapp by comparing step counts from an Actigraph and measured distance on a premeasured 6MWT course with step counts and estimated distance obtained simultaneously from our SA-6MWTapp (best estimation algorithm, r=0.89 [95% confi

SUBMITTER: Brooks GC 

PROVIDER: S-EPMC4843495 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature