Data are presented as both force normalised to body weight (A) and total force (B). Symbols for significant differences (P < 0.05) are: *between untreated mdx and C57, $between untreated mdx and taurine‐treated mdx, ^between untreated mdx and OTC‐treated mdx, #between OTC‐ and taurine‐treated mdx. Data are presented as mean ± SEM and n = C57 (11), mdx (10), taurine (10) and OTC (11) treated mice.