Development of a training-oriented wearable knee joint exoskeleton for forming a scientific force application pattern...

Area of Science:

• Biomechanics
• Wearable Technology
• Sports Science

Background:

• Squat training is crucial for athletic performance.
• Poor squat technique increases knee injury risk.
• A need exists for methods to improve squat safety.

Purpose of the Study:

• To develop and evaluate a wearable knee exoskeleton.
• To promote a hip-dominant squat pattern.
• To enhance knee safety during squat exercises.

Main Methods:

• Fifteen healthy men participated in the study.
• Squats were performed with and without the exoskeleton at matched loads.
• 3D motion, ground-reaction force, and EMG data were analyzed.

Main Results:

• The exoskeleton reduced angular velocity at the hip, knee, and ankle.
• Hip power contribution increased by 20-40%, while knee contribution decreased by 20-30%.
• Knee and ankle range of motion decreased, and vastus medialis activation was reduced.

Conclusions:

• The exoskeleton effectively standardizes squat mechanics and reduces knee load.
• Individualized tuning is recommended for optimal training transfer.
• Auxiliary mobility work may be needed to maintain functional range of motion.