Why the study?
Physiological determinants of ultramarathon success have rarely been assessed and likely differ in their contributions to performance as race distance increases.
Classic physiological determinants like cardiovascular health and running fitness predict performance in 50-km trail races, but their predictive value diminishes in longer ultramarathons (80-km and 160-km).
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Performance predictors vary by ultramarathon distance; leaves open distance-specific training targets.
Coates et al. (2020) studied this question.
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