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Effect of supplementation on functional tests. (A). Changes in time duration in TUG. (B). Changes in the distance in 6 min walk test. (C). Changes in time duration in 10 m walk test. * p < 0.005, ** p < 0.05. TUG—test Up and Go; T0—before the supplementation; T1—after 6 weeks of supplementation; T2—after 12 weeks of supplementation; PL—placebo group; VitD—vitamin D3 group whiskers refer to SE.
