78.5 ± 7.5 years, N = 199, N males = 99, N females = 95)  EG1 and EG2: pRJ (1.2 and 4.8 g/d), respectivelyCG: placebo  Handgrip strength, six-minute walk test, timed up and go test, and standing on one leg with eyes closed.  pRJ had no significant effect on handgrip strength, six-minute walk test, timed up and go test, and standing on one leg with eyes closed.  [59]