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Striatal Dopamine and Skeletal Muscle Energy Metabolism in Older Adults.

2025-06-12 epidemiology Title + abstract only
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Dopamine (DA) in the central nervous system is considered a master regulator of mobility performance and vigor, but its mechanistic relationship with skeletal muscle energetics is unclear. We tested the cross-sectional association of striatal DA and skeletal muscle mitochondrial function in 146 older adults participating in the Study of Muscle, Mobility and Aging (75.4 years old, 54% women). Striatal DA was measured using (+)-a-[11C] dihydrotetrabenazine (DTBZ) PET imaging for the limbic, sensor...

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