4.3 Article

Effects of Barefoot and Shod Conditions on the Kinematics and Kinetics of the Lower Extremities in Alternating Jump Rope Skipping-A One-Dimensional Statistical Parameter Mapping Study

Journal

BIOENGINEERING-BASEL
Volume 10, Issue 10, Pages -

Publisher

MDPI
DOI: 10.3390/bioengineering10101154

Keywords

rope jumping; shoe conditions; statistical parameter mapping; lower extremity

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The purpose of this study was to compare the biomechanics of the lower extremity during AJRS under barefoot and shod conditions. The results showed that wearing shoes decreased the range of motion and peak angular velocity of the MTP joint, but increased the joint power and reduced the peak loading rate. These findings suggest that wearing shoes during AJRS could provide better propulsion, emphasizing the importance of the ankle and MTP joint.
Purpose: To explore the difference in the biomechanics of the lower extremity during alternating jump rope skipping (AJRS) under barefoot and shod conditions. Methods: Fourteen experienced AJRS participants were randomly assigned to wear jump rope shoes or be barefoot (BF) during the AJRS at a self-selected speed. The Qualisys motion capture system and Kistler force platform were used to synchronously collect the ground reaction forces and trajectory data of the hip, knee, ankle, and metatarsophalangeal (MTP) joints. One-dimensional statistical parameter mapping was used to analyze the kinematics and kinetics of the lower extremity under both conditions using paired t-tests. Results: Wearing shoes resulted in a significant decrease in the ROM (p < 0.001) and peak angular velocity (p < 0.001) of the MTP joint during the landing phase. In addition, the MTP joint power (p < 0.001) was significantly larger under shod condition at 92-100% of the landing phase. Moreover, wearing shoes reduced the peak loading rate (p = 0.002). Conclusion: The findings suggest that wearing shoes during AJRS could provide better propulsion during push-off by increasing the MTP plantarflexion joint power. In addition, our results emphasize the significance of the ankle and MTP joint by controlling the ankle and MTP joint angle.

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