Sarcopenia: Causes and Treatments
www.germanjournalsportsmedicine.com › archiveMany factors contribute to sarcopenia. In the following, five key factors will be discussed: 1. Loss of motor neurons and muscle fibers and muscle fiber atrophy. Cross-sectional studies suggest that during normal aging, spinal limb motor neurons ( 56) and up to half of the vastus lateralis muscle fibers ( 30) are lost.