Comparison of weight, grip strength, and rotarod performance of C57BL6 and SJL/J mice at 9, 17 and 25 weeks of age.

All data are expressed as mean ± SE, 1Number of animals per group, 2NFL (Forelimb) and NHL (Hindlimb) grip strength data are normalized to body weight and are expressed in kilogram force per kilogram (KGF/kg), 3Rotarod, the length of time in seconds that mice stayed on the rotarod. *p-values are from Wilcoxon rank sum test at each time point, 4NS, not statistically significant. a, b, cindicate the p value for the significant differences between means with the same letter (eg a vs a etc.).