Immediate Effects of the Diamond Taping Technique on Common Extensor Muscle Stiffness, Grip Strength, and Wrist Extension Strength

Background Taping techniques are widely applied in sports and rehabilitation medicine to provide mechanical support, enhance neuromuscular function, and prevent musculoskeletal injuries. Among these, the diamond taping technique is designed to stabilize the wrist and elbow while preserving functional movement. However, its immediate effects on muscle stiffness and strength remain insufficiently investigated. Objectives The purpose of this study was to investigate the immediate effects of the diamond taping technique on common extensor muscle stiffness, grip strength, and wrist extension strength in healthy individuals. Methods Thirty healthy young adults were randomly assigned to either the diamond taping group or the placebo taping group. Baseline measurements were obtained for each participant, followed by the application of diamond taping to the lateral epicondyle region. Post-intervention assessments conducted to evaluate changes in common extensor stiffness, grip strength, and wrist extension strength. Results The diamond taping technique produced significant improvements in grip strength and wrist extension strength, as well as a significant reduction in common extensor stiffness immediately after application (p < 0.05). Compared with the placebo group, the diamond taping group demonstrated significantly greater changes in grip strength (p < 0.05), wrist extension strength (p < 0.05), and common extensor stiffness (p < 0.05). Conclusions Diamond taping effectively enhances grip and wrist extension strength while reducing common extensor stiffness in the short term.