... impairment, people adjust both step length and step frequency to optimize their gait. At a set speed, stride frequency and stride length are inversely proportional to one another ( Zarrugh et al., 1974 ), and manipulation of one will result in reciprocal changes in the other. Indeed, at a constant speed...

...G. A. Cavagna; M. A. Legramandi; A. La Torre SUMMARY Step frequency and energy expenditure are greater in backward running than in forward running. The differences in the motion of the centre of mass of the body associated with these findings are not known. These differences were measured here...