Background Appropriate control of whole-body angular momentum (H) is crucial to maintain
dynamic balance and thus avoid falling during daily activities. Poor H control ability during
locomotion has been found in people with an increased risk of falling, such as post-stroke
patients and amputees. In contrast, little is known about the control of H during locomotion in
the elderly. The aim of this study was to investigate whether and how aging influences three-
dimensional H control during initiation of stepping. Methods Twenty-two healthy old and 22 …