Shoes are an essential item in our daily lives. They not only represent fashion and beauty, but also serve as devices to reduce physical fatigue, alleviate emotional stress, and protect our feet when in contact with the ground. In sports, shoes are even more important as they can improve athletic performance. Therefore, a good pair of sports type shoes should not only enhance appearance and performance, but also provide protection. Foot injuries are common in sports, causing great pain to students and causing inconvenience to their learning and daily life. Minor sprains require at least a week to recover, while more severe cases may take several years, or even longer, impacting future sports or life. To reduce the occurrence of sprains during exercise, students should wear sports type shoes with wide soles. In modifying the shoes to have wider soles, two conditions should be met:
Basketball shoes, while featuring widened soles, have wide fronts and belong to "big-head" shoes. When the toes have too much room to move, the center of gravity of the body will shift to the inside or outside when landing, causing sprains. When the toes hit the ground without proper positioning, it becomes easier for those prone to outward-toe sprains to be affected. Therefore, while widening the soles, the shoe surface should maintain a regular width, providing familiar space for the toes and preventing injuries caused by excessive movement. Additionally, regular width satisfies students' pursuit of fashion and beauty, conforms to the common dressing style, and preserves traditional aesthetics, garnering greater popularity.
Material-wise, overly soft substances should not be selected
Because the sole extends 1-1.5 cm beyond the shoe surface when the shoe surface is not widened, if the sole is too soft and unable to provide good support, the body will shift toward an unreasonable position, causing harm. Selecting overly rigid materials is not recommended either, as they lack necessary flexural resilience, affecting the comfort of normal movement and causing discomfort or damage to the body.
Thickness-wise, the part of the sole that extends beyond the shoe surface
should be less than 0.2-0.3 cm thick. Too thin affects support while too thick affects appearance. The extra part can be shaped like a slope, matching the overall structure of sports type shoes, or can be bound to prevent bacterial breeding and reduce residual dirt from a hygienic perspective. It is important to note that the widened part must be level with the ground and not gradually thinner from top to bottom, as is the case with narrow soles, which reduces the stress area and has no protective effect.
Sole pattern-wise, sole patterns are very particular
Different patterns apply to different sports. In school sports with limited conditions, running and jumping on cement surfaces are the typical activities, with the priority being slip-resistance. Therefore, edge patterns can be reinforced to enhance grip and increase a defensive function. Studies have shown that increasing pattern size can increase the friction coefficient between shoes and ground. Thus, the widened surface can incorporate circular patterns to improve control over sports direction and strength, facilitating movement. In many sports type shoes, zigzag patterns are used to increase force distribution and achieve slip-resistance. Therefore, in the widened part, increasing vertical and horizontal overlapping patterns can help distribute force and support against sudden shifts in body balance.