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Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement

Citation

Wang, Weijie (2022), Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement, Dryad, Dataset, https://doi.org/10.5061/dryad.r4xgxd2fr

Abstract

Mechanical energy fluctuation of the lower limbs during walking has not been fully investigated. It was hypothesised that the segments of the lower limbs may work as a pendulum, i.e., the kinetic and potential energies exchanged out of phase. This study aimed to investigate energy changes and recovery during gait. The gait data for 12 participants with total-hip-replacement and 12 an age-matched control was compared. The kinetic, potential, and rotative energies for whole lower limb and thigh, calf, and foot, were calculated. The effectiveness of a pendulum effect was analysed. Gait parameters, e.g., walking speeds, cadence, and stride length were calculated. The results showed that the thigh had significant effectiveness as a pendulum during gait with an energy recovery coefficient of approximately 40% while the calf and foot were less like a pendulum during gait. In comparison, energy recoveries of the lower limbs in the two groups were not significantly different. However, the control group had a faster walking speed, longer stride length, wider step width and higher kinetic energy changes than the total-hip-replacement group. This study concluded that the mechanical energy recovery mechanism in the lower limbs during walking exists for two groups.

Methods

The original data were collected using Vicon motion capture system. The data processing was carried out using Vicon Nexus and Matlab. The statistical analysis was carried out using Spss.

Funding