Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Predicted mobility changes among those with low (lowest tertile: red) and high (highest tertile: blue) baseline kPCr. Legend: Predicted mobility changes are adjusted for covariates, including baseline age, sex, extent of PCr depletion during exercise, and body mass index over time
