[1] Univ North Carolina Chapel Hill, Thurston Arthrit Res Ctr, CB 7280, Chapel Hill, NC 27599 USA
[2] Univ North Carolina Chapel Hill, Dept Med, Chapel Hill, NC 27599 USA
[3] Durham VA Med Ctr, Ctr Innovat Accelerate Discovery & Practice Transf, Durham, NC 27705 USA
[4] Univ Florida, Coll Nursing, POB 100197, Gainesville, FL USA
[5] Univ North Carolina Chapel Hill, Dept Exercise & Sport Sci, Chapel Hill, NC USA