All physiological functions decline with age, but which changes are primary and which are secondary is not always clear. Liu et al. (2013), examining functional changes in the muscles and motor neurons of C. elegans, suggest that when it comes to locomotion, it is the nervous system that shows earlier age-related deterioration. © 2013 Elsevier Inc.
Kirkwood, T. B. L. (2013, September 3). Untangling functional declines in the locomotion of aging worms. Cell Metabolism. Cell Press. https://doi.org/10.1016/j.cmet.2013.08.013