Fig. 2
From: Metabolomic signatures for the longitudinal reduction of muscle strength over 10 years
Plots of the fitted lines for changes over 10-year follow-up time for A hand grip strength, B knee extension, and C leg muscle strength estimated by linear mixed regression model done with nlme R package with the function lme(Muscle Strength ~ follow-up time, data=TASOAC_Data, random=~ follow-up time|SampleID, control=list(opt = “optim”), method= “REML”, na.action=na.omit). The gray shaded areas are 95% CI