CFPE and 10.4µm, respectively). Mitochondrial O₂ flux was 58 and 68pmol·(s·mg)⁻¹ during coupled and uncoupled respiration, respectively. The athlete's cardiorespiratory and oxidative capacity resembled those of females' in their 50s or younger. Collectively, her large, well-vascularized slow fibers, high proportion of fast fibers, and preserved muscle oxidative capacity likely contributed to her world record performance, illustrating the remarkable plasticity of skeletal muscle even in very advanced age.
Colosio et al. (Wed,) studied this question.