To understand how the design of sandals and slippers impacts plantar pressure and gait stability, a research team led by Prof. Joanne Yip, Associate Dean and Professor of the School of Fashion and Textiles of The Hong Kong Polytechnic University (PolyU), collaborated with the Ming Pao Daily News to conduct tests on a variety of sandal and slipper models, assessing their influence on plantar pressure and gait stability.
The results showed that overly soft soles fail to adequately support the ankle joints and plantar muscles, reducing stability and dynamic balance. This increases the risk of ankle sprains and falls. Furthermore, the leg muscles become tired as they exert more force to maintain balance. On the contrary, if the soles are excessively hard or thick, the forefoot forces an unnatural walking pattern that can cause leg muscle fatigue and joint pain.
Prof. Kit Yick, Professor of the School of Fashion and Textiles of PolyU, suggested that when choosing sandals, it is important to select the optimal level of hardness and softness. The sole design should balance softness and comfort with appropriate support and cushioning. Based on the foot shape and activity needs, individuals can choose the appropriate shoe type to ensure both "comfort" and "safety".
Full interview with Ming Pao Daily (In Chinese Only)
