“Muscle contributions to the acceleration of the whole body centre of mass during recovery from forward loss of balance by stepping in young and older adults,” by David F. Graham, Christopher P. Carty, David G. Lloyd, and Rod S. Barrett (PLoS ONE12(10): e0185564. doi.org/10.1371/journal.pone.0185564, XML, HTML, and .pdf format, 13p.).
journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0185564