The Hyperkinetic Circulatory Response during Exercise in Metabolic Myopathies: A Peculiar Model of Integrated Biology

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Observational analysis reveals altered cardiac output and oxygen utilization in metabolic myopathies, suggesting a distinct physiological model.

Peak exercise cardiac output is significantly lower in patients with respiratory chain deficiencies compared to healthy controls.
The analysis shows a marked difference in oxygen utilization metrics for metabolic myopathies during exercise testing.
Variability in the exercise responses of glycolysis defects versus respiratory chain deficiencies highlights the need for standardization in physiological studies.
Limited data on lipid oxidation defects indicate the variability and complexity of cardiovascular responses across different metabolic myopathies.

Besson et al. (2025) studied this question.

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Observational analysis reveals altered cardiac output and oxygen utilization in metabolic myopathies, suggesting a distinct physiological model.