As we mentioned before, gaitssuch as decreased walking speed, asymmetry and increased metabolic costcompared to bilateral amputees at the same waking speed, are often seen inunilateral transtibial amputees. According to Aslani et al (2016), the energeticcost of walking and running increases as the increasing speed of movement,which has been shown be the previous researches. Also, it’s been demonstrated thatdifferent gait patterns result in difference energetic cost. Aslani (2016)indicated that heart rate and oxygen consumption can be measured as parametersfor energy consumption, which can be further analyzed for MHR and gaitefficiency. However, obvious changes from these parameters could be hard todetect, so that the above methods might be only suitable for the overall indicator.
Some previous studies indicated that displacement of Centre of Mass (CM) positivelycorrelates to energy consumption during jumping activities. Gait energytransfer efficiency during jumping activities equals to the displacement of CMat aerial phases divided by displacement of CM at stance phase, which alsoequals to the output mechanical energy divided by the input stored energy. Havingsaid that, compared to walking activities, oscillation of the CM on thevertical place is much higher, resulting in higher energy expenditure