An Investigation of Differences in Lower Extremity Biomechanics During Single-Leg Landing From Height Using Bionic Shoes and Normal Shoes

Abstract

Bionic shoes utilizing an actual foot shape sole structure can alter lower limb’s biomechanics, which may help in the development of specific training or rehabilitation programs. The purpose of this study was to investigate the biomechanical differences in the lower limb during a single-leg landing task using bionic shoes (BS) and normal shoes (NS). Fifteen healthy male subjects participated in this study, sagittal, and frontal plane data were collected during the landing phase (drop landing from 35 cm platform). Our study showed that BS depicted a significantly greater minimum knee flexion angle at initial contact (p = 0.000), a significantly greater minimum (initial contact) hip flexion angle at initial contact (p = 0.009), a significantly smaller sagittal plane total energy dissipation (p = 0.028), a significantly smaller frontal plane total energy dissipation (p = 0.008), a significantly smaller lower limb total energy dissipation (p = 0.017) than NS during the landing phase. SPM analysis revealed that BS depicted a significantly smaller knee joint vertical reaction force during the 13.8–19.8% landing phase (p = 0.01), a significantly smaller anterior tibia shear force during the 14.2–17.5% landing phase (p = 0.024) than NS. BS appears to change lower limb kinematics at initial contact and then readjust the landing strategies for joint work and joint reaction force, thereby reducing the risk of lower limb skeletal muscle injury. BS have great potential for future development and application uses, which may help athletes to reduce lower limb injury risk.

Explaining the differences of gait patterns between high and low-mileage runners with machine learning

“…Vicon motion capture system and AMTI force plate are connected through Vicon Nexus 1.8.6 software to achieve the synchronous collection. This study selected the right leg as the analytical limb, so the 12.5 mm diameter standard reflective marker was attached to the pelvis and right lower limb 25 : right anterior superior iliac spine, left anterior superior iliac spine, right posterior superior iliac spine, left posterior superior iliac spine, right medial condyle, right lateral condyle, right medial malleolus, right lateral malleolus, right first metatarsal head, right fifth metatarsal head, right distal interphalangeal joint of the second toe. At the same time, three tracking clusters were labeled on the right middle and lateral thigh, right middle and lateral shank, right heel.…”

New Insights for the Design of Bionic Robots: Adaptive Motion Adjustment Strategies During Feline Landings

“…The vertical GRF > 10 N was used to define the force plate's initial contact point ( 39 ). From the first contact point until the second peak vertical GRF time point, the landing phase was determined as the initial contact point (0% landing phase) to maximum elbow flexion (100% landing phase).…”

Lower extremity kinematic coupling during single and double leg landing and gait in female junior athletes with dynamic knee valgus

“…The biomechanical procedures and mean values were calculated using a self-developed code in MATLAB (version R2017b). Initial contact moment was defined as the time point when the VGRF threshold exceeded 10 N during each task [ 45 ]. The current study recorded and calculated the kinematic couplings between lower extremity joints in frontal and transverse motion planes.…”

“…These markers were placed laterally on posterior superior iliac spine, anterior superior iliac spine, lateral thigh, lateral femoral epicondyle, lateral shank, lateral malleolus, second metatarsal head, and calcaneus, the fifth metatarsal, medial malleolus, and medial femoral epicondyle were calculated using a self-developed code in MAT-LAB (version R2017b). Initial contact moment was defined as the time point when the VGRF threshold exceeded 10 N during each task [45]. The current study recorded and calculated the kinematic couplings between lower extremity joints in frontal and transverse motion planes.…”