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Type I and type II muscle fibre size (A), myonuclear content (B) and myonuclear domain size (C) in healthy young adults (18‐29 y; n = 119), sexuagenarian (60‐69 y; n = 91) and septuagenarian (70‐79 y; n = 93). Data were analysed by means of a one‐way ANOVA and are expressed as means ± SD. * Significantly different compared with young, P < .01. Horizontal line indicates that the differences are present in both groups
