Introduction: Elastic cushioning materials protect human tissue from injury by absorbing impact energy and delaying its transfer. However, the potential compromise in force delivery to the hitting target remains unknown.
Methods: To examine if silicone cushioning compromises punch force delivery to a hitting target, a double-blind crossover trial with 12 elite boxers was conducted following material tests. Each boxer delivered five maximal punches under two conditions: silicone-hand wrapping and gauze-hand wrapping, in counterbalanced order, with a 3-day interval between sessions. Force distribution along the Z-axis indicated the punch's intended direction, while forces along the X and Y axes represented force dissipation toward unwanted direction.
Results: The material tests (based on ASTM International, West Conshohocken, PA, USA) demonstrated substantially higher compression to disruption for silicone than gauze of similar thickness. During the punching trials, the silicon-based hand wrapping exhibited slightly higher total force production (436 ± 33 N vs. 372 ± 12 N, < 0.001) than the gauze-based hand wrapping. Moreover, force wastage, calculated as the sum of forces along the X and Y axes vs. the total force produced in percentage, was notably lower for silicone material (2.0% wastage) compared to gauze (3.8% wastage) ( < 0.001). The use of silicone materials lengthened the contact time between the punching fist and the hitting target from 35 ms to 50 ms ( < 0.001).
Conclusion: The elastic cushion does not compromise the force delivery of the boxing glove to the hitting target. Instead, it appears to allow for additional maneuvering time for alignment during the fist-target contact with higher impact.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11338876 | PMC |
http://dx.doi.org/10.3389/fspor.2024.1358224 | DOI Listing |
Prosthet Orthot Int
January 2025
Green Pastures Hospital and Rehabilitation Centre, Pokhara, Nepal.
Introduction: Prosthetic silicone liners improve comfort and skin protection and allow the use of total surface bearing (TSB) sockets, which provide enhanced proprioception and comfort. Unfortunately, silicone liners are cost-prohibitive in resource-limited environments (RLEs) where patellar tendon bearing (PTB) sockets with PE-lite liners remain standard, leading to patient discomfort and skin issues.
Objective: This study evaluates the benefits and durability of an affordable silicone liner locally manufactured in an RLE to promote TSB socket adoption, aiming to enhance prosthetic care and patient outcomes.
Musculoskelet Surg
November 2024
Circolo Hospital, Macchi Foundation 'Insubria University', Viale Borri 57, 21100, Varese, Italy.
Forefoot disorders are prevalent in the general population, with an incidence between 2 and 20%. Among them, lesser toe deformities (hammer, claw, and mallet toes) are frequent disorders, and their conservative management is often not adequately considered but usually attempted before surgical indication. Among conservative treatments, shoe modifications and the application of orthoses may, in most cases, alleviate symptoms.
View Article and Find Full Text PDFMaterials (Basel)
August 2024
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, China.
Three-dimensional-printed silicone rubber foams, with their designable and highly ordered pore structures, have shown exceptional potential for engineering applications, particularly in areas requiring energy absorption and cushioning. However, optimizing the mechanical properties of these foams through structural design remains a significant challenge. This study addresses this challenge by formulating the research question: How do different 3D-printed topologies and printing parameters affect the mechanical properties of silicone rubber foams, and how can we design a novel topological structure? To answer this, we explored the mechanical behavior of two common structures-simple cubic (SC) and face-centered tetragonal (FCT)-by varying printing parameters such as filament spacing, filament diameter, and layer height.
View Article and Find Full Text PDFFront Sports Act Living
August 2024
Laboratory of Exercise Biochemistry, Institute of Sports Science, University of Taipei, Taipei, Taiwan.
Introduction: Elastic cushioning materials protect human tissue from injury by absorbing impact energy and delaying its transfer. However, the potential compromise in force delivery to the hitting target remains unknown.
Methods: To examine if silicone cushioning compromises punch force delivery to a hitting target, a double-blind crossover trial with 12 elite boxers was conducted following material tests.
Materials (Basel)
July 2024
Department of Prosthetic Dentistry, Wroclaw Medical University, 50-425 Wrocław, Poland.
Background: In patients undergoing surgery for oral cancer, soft support materials are used to minimise trauma to the soft tissues. Silicone-based liners are widely used in prosthetic dentistry. A prerequisite for long-term Adhesion of the liner to the denture base is largely dependent on the surface preparation of the denture material.
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