Assessment of muscle strength and endurance
A, latency to fall during pen test assay for sedentary wild‐type (SED‐WT), sedentary HSALR (SED‐DM1), and DM1 mice given access to an in‐cage running wheel for 7 weeks (EX‐DM1) animals. B, maximal grip strength exerted by all limbs relative to body weight in the three experimental groups. C, peak forelimb grip strength corrected for body weight in mice from all groups. n = 8–13; *
P < 0.05 vs. SED‐WT; #
P < 0.05 vs. SED‐DM1.