New research from the North American Mitochondrial Disease Consortium (NAMDC). This summary is based on a paper published in the journal BMC Medicine on May 22, 2026, titled "Quantitative assessment of efficacy and evaluation of feasibility of exercise training protocols in adult and pediatric primary mitochondrial disease." 

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Transcript: 

New research from the North American Mitochondrial Disease Consortium (NAMDC), a research group of the Rare Diseases Clinical Research Network.

Assessing Exercise Training Protocols in Primary Mitochondrial Diseases.

This summary is based on a paper published in the journal BMC Medicine on May 22, 2026.

Primary mitochondrial diseases (PMD) are a large group of metabolic disorders caused by pathogenic variants in mitochondrial or nuclear DNA that impair the cell's ability to produce energy. The most common symptoms are muscle weakness and fatigue, making it difficult for individuals with PMD to complete daily living activities like walking, cleaning, and cooking. Although exercise has shown benefits in a small number of PMD studies, standardized exercise regimens have not been established.

In this study, researchers assessed exercise training protocols in PMD. First, the team identified 109 exercise training protocols from previous studies. Next, they analyzed the key outcome measures from these studies. Then, they evaluated each protocol’s likelihood of successful implementation in future exercise studies of PMD.

Results highlight several exercise training protocols that could be feasible and effective in PMD, including high-intensity circuit training, low-intensity steady-state aerobic exercise, low-intensity resistance training, and blood flow restriction resistance training. Authors note that further studies are needed to understand the effects of different types of exercise in PMD.