Biomechanical Analysis of Wearing Carbon Nanotube-Based Insole during Drop Landing Chae, Woen-Sik; Jung, Jae-Hu; Lee, Haeng-Seob;
The purpose of this study was to determine the biomechanical effect of wearing carbon nanotube-based insole on cushioning and muscle tuning during drop landing. Twenty male university students(age: , height: , weight: ) who have no musculoskeletal disorder were recruited as the subjects. Average axial strain, average shear strain, inversion angle, linear velocity, angular velocity, vertical GRF and loading rate were determined for each trial. For each dependent variable, a one-way analysis of variance(ANOVA) with repeated measures was performed to test if significant difference existed among different three conditions(p<.05). The results showed that Average axial strain of line 4 was significantly less in CNT compared with EVA and PU during IP phase. The average shear strain was less in CNT compared with EVA and PU during other phases. The inversion angle was increased in CNT compared with EVA and PU during all phase. In linear velocity, angular velocity, vertical GRF and loading rate, there were no significant difference between the three groups. This result seems that fine particle of carbon nanotube couldn`t make geometric form which can absolve impact force by increasing density through eliminating voids of forms. Thus, searching for methods that keep voids of forms may play a pivotal role in developing of insole. This has led to suggestions of the need for further biomechanical analysis to these factors.
Analysis of Plantar Pressure Differences between Flat Insole Trekking Shoes and Nestfit Trekking Shoes, Korean Journal of Sport Biomechanics, 2015, 25, 4, 475
Abdel-Aziz, Y., & Karara, H. M.(1971). Direct linear transformation from comparator coordinates in object-space coordinates in close range photogrammetry. Proceedings of the ASP Symposium of Close-Range Photogrammetry. Urbana, IL.
Cao, A., Dickrell, P. L., Sawyer, W. G., Ghasemi-Nejhad, M. N., & Ajayan, P. M.(2005). Super-compressible foamlike carbon nanotube films. Science, 310, 1307-1310.
Clement, D. B., Taunton, J. E., Smart, G. W., & McNicol, K. L. (1981). A survey of overuse running injuries. Physical and Sports Medicine, 9, 47-58.
Cook, S. D., Brinker, M. R., & Mahlon, P.(1990). Running shoes, their relation to running injuries. Sports Medicine, 10, 1-8.
Decker, M. J., Torry, M. R., Wyland, D. J., Sterett, W. I., & Steadman, J. R.(2003). Gender differences in lower extremity kinetics, kinematics, energy absorption during drop landing. Clinical Biomechanics, 18, 662-669.
James, S., Bates, B., & Osternig, L.(1978). Injuries in runner. The American Journal of Sports Medicine, 6, 40-50.
Kang, N. J., & Chae, W. S.(2010). Effect of sports taping on impact forces and muscle tuning during drop landing. Korean Journal of Sport Biomechanics, 20(2), 175-182.
Kim, J. W., & Chae, W. S.(2012). The comparative analysis on mechanical property test of carbon nanotube-based shock absorbers. Korean Journal of Sport Biomechanics, 22(2), 237-242.
Suhr, O., Koratkar, N., Keblinski, P., & Ajayan, P.(2005). Viscoelasticity in carbon nanotube composites. Journal of Nature Materials, 4, 134-137.
van Mechelen, W.(1992). Running injuries, a review of the epidemiological literature. Sports Medicine, 14, 320-335.
Wood, G.(1982). Data smoothing and differentiation procedures in biomechanics. In R. L. Terjung (Eds.), Exercise and Sport Sciences Reviews, 10, 308-362. Lexington, MA: D.C. Health and Company.