This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. The overall hypothesis of this project is that mitochondrial DNA (mtDNA) deletions are increased in sarcopenia leading to reduced mitochondrial enzyme activities and, hence reduced muscle oxidative energy metabolism furthering the loss of skeletal muscle mass and function. Furthermore, lower physical activity and poorer nutritional status in sarcopenic elderly increases these causative factors.
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