6533b85cfe1ef96bd12bd4cc

RESEARCH PRODUCT

Factores de rendimiento en el desplazamiento del tenista influenciados por el calzado. (Performance factors on tennis player displacements influenced by the shoes.)

subject

description

Los desplazamientos laterales son de gran importancia en el tenis. Sin embargo, no ha sido publicado ningun estudio sobre el efecto del calzado sobre el rendimiento en este tipo de movimientos. En el estudio participaron 5 jugadores habituales de tenis y se analizaron 10 calzados comerciales de tenis. El movimiento estudiado consistio en un desplazamiento lateral con parada y cambio de sentido, registrandose las fuerzas mediante una plataforma dinamometrica Dinascan-IBV y grabandose el movimiento con dos camaras de video S-VHS Panasonic WV-BL600. Los resultados de los ANOVAs realizados mostraron que algunas de las variables analizadas eran dependientes del calzado (p < 0.05). De estas, destacan (1) la supinacion maxima de la subastragalina y (2) el tiempo de apoyo. Se detectaron varias correlaciones (Pearson) significativas (p < 0.05) de especial relevancia, destacando la correlacion positiva entre el tiempo de apoyo con los maximos de supinacion. Como el impulso mecanico no se ha visto afectado por el calzado, esto indica que el calzado que limita la supinacion permite realizar el movimiento analizado en un menor tiempo. Palabras clave : calzado; desplazamiento lateral; supinacion; rendimiento; tenis. Abstract Sideward cutting movements are very important in tennis. However, no studies on their effect on performance have been published. 5 tennis players (age 21.5 ± 0.8, weight 75.2 ± 2.8 kg, height, 1.78 ± 0.05 m) participated in the study on a voluntary basis and 10 tennis shoes were analysed. Subjects perform a sideward cutting movement. An extensometric force plate (Dinascan-IBV) was used to record the kinetic variables and 2 video cameras (Panasonic-WV-BL600) were utilized for the kinematic variables. ANOVA results showed several variables as shoe-dependent (p < 0.05), among these stands out (1) rearfoot supination movement and (2) contact time. Moreover these variables were positively correlated (p < 0.05). As mechanical impulse was not change, this means that shoes that limit supination allow perform sideward cutting movements faster. Key words : shoe; cutting movement; supination; performance; tennis. doi:10.5232/ricyde2009.01506 Texto completo en PDF --------------------------------------------------------------------- Referencias/references Brizuela, G.; Llana, S.; Ferrandis, R. y Garcia-Belenguer, A.C. (1997). The influence of basketball shoes with increased ankle support on shock attenuation and performance in running and jumping. Journal of Sport Sciences, 15 (5) 505-515. doi:10.1080/026404197367146 Caine, D.J.; Caine, C.G. & Lindner, K.J. (1996) Epidemiology of sports injuries. Ilinois. Human Kinetics. Chandler, R.F.; Clauser, C.E.; McConville, J.T.; Reynolds, H.M. & Young, J.W. (1975). Investigation of inertial properties of the human body. Wright-Patterson Air Force Base (pp. 74-137). Ohio: Aerospace Medical Research Laboratories. Chard, M.D. & Lachmann, S.M. (1987) Racquet sports-patters of injury presenting to a sports injury clinic. British Journal of Sports Medicine, 21 (4) 150-153. doi:10.1136/bjsm.21.4.150 PMid:3435816 PMCid:1478480 Ferran, N.A. & Maffulli, N. (2006) Epidemiology of sprains of the lateral ankle ligament complex. Foot Ankle Clinics, 11 (3), 659-662. doi:10.1016/j.fcl.2006.07.002 PMid:16971255 Hutchinson, M.R.; Laprade, R.F.; Burnett, Q.M.; Moss, R. & Terpstra, J. (1995). Injury surveillance at the USTA boys' tennis championships: a 6-yr study. Medicine and Science in Sports and Exercise, 27 (6) 826-830. doi:10.1249/00005768-199506000-00006 Kulund, D.N.; McCue, F.C.; Rockwell, D.A.; Gieck, J.H. & Cat, E.D. (1979). Tennis injuries: prevention and treatment. American Journal of Sports Medicine, 7 (4) 248- 253. doi:10.1177/036354657900700409 PMid:474866 Llana, S.; Brizuela, G.; Dura, JV. y Garcia (2002). A study of the discomfort associated with tennis shoes. Journal of Sport Sciences, 20 (9), 671-679. doi:10.1080/026404102320219374 Miller, S. (2006). Modern tennis rackets, balls and surfaces. British Journal of Sports Medicine, 40, 401-405. doi:10.1136/bjsm.2005.023283 PMid:16632569 PMCid:2577483 Pluim, B.M.; Staal, J.B.; Windler, G.E. & Jayanthi N. (2006). Tennis injuries: occurrence, aetiology, and prevention. British Journal of Sports Medicine, 40 (5), 415-423. doi:10.1136/bjsm.2005.023184 PMid:16632572 PMCid:2577485 Shackel, B.; Chidsey, K.D. & Shipley, P. (1969). The assessment of chair comfort. Part I. Experimental comparisons of upright chairs. Ergonomics, 12 (2), 269-286. doi:10.1080/00140136908931053 PMid:5810916 Stacoff, A.; Steger, J.; Stussi, E. & Reinschmidt, C. (1996). Lateral stability in sideward cutting movements. Medicine and Science in Sports and Exercise, 28 (3) 350-8. doi:10.1097/00005768-199603000-00010 Stacoff, A.; Kaelin, X. & Stussi, E. (1991). The effect of shoes on the torsion and rearfoot motion in running. Medicine and Science in Sports and Exercise, 23 (4) 482-490. doi:10.1249/00005768-199104000-00015 Stefanyshyn, D. & Nigg, B. (2000). Influence of midsole bending stiffness on joint energy and jump height performance. Medicine and Science in Sports and Exercise, 32 (2) 471-476. doi:10.1097/00005768-200002000-00032 Stussi, E. y Stacoff, A. (1993). Biomechanische und orthopadische probleme des tennis- und hallenschuhs. Sportverletzung Sportschaden, 7, 187-190. doi:10.1055/s-2007-993505 PMid:7908460 Valiant, G.A. (1989). A method of measuring translational and rotational traction characteristics of footwear. Journal of Biomechanics, 22, 1091. doi:10.1016/0021-9290(89)90488-0 ---------------------------------------------------------------------