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A un total de 43 piraguistas varones (23 kayakistas y 20 canoistas) de categoria infantil (media de edad: 13,35 ± 0,59 anos) se les valoro, con un inclinometro Unilevel, la disposicion sagital de las curvas lumbar y dorsal en bipedestacion relajada, sedentacion astenica y en maxima flexion del tronco al realizar el test dedos-planta. Los valores angulares medios para la cifosis dorsal en bipedestacion fueron de 42,22o ± 7,76o para los kayakistas y de 37,45o ± 8,68o para los canoistas. En cuanto a la lordosis lumbar estos valores fueron de 27,91o ± 6,21o y 25,70o ± 6,15o, respectivamente. En el test dedos-planta, en las curvas dorsal y lumbar los resultados obtenidos fueron de 63,78o ± 6,21o y 33,70o ± 7,18o, respectivamente para kayakistas y de 65,35o ± 11,48o y 30,55o ± 6,33o para canoistas. No existieron diferencias significativas entre kayakistas y canoistas. En base a las referencias de normalidad, se encontro un alto porcentaje de morfotipos cifoticos, especialmente en la curva lumbar. En conclusion, existe una alta frecuencia de morfotipos alterados en flexion maxima del tronco y en sedentacion astenica, especialmente en el raquis lumbar, aunque la disciplina practicada (kayak o canoa) no genera diferencias significativas en la disposicion sagital del raquis. Palabras clave: raquis, dorsal, lumbar, postura, piraguistas. === Abstract Thoracic and lumbar spinal curvatures were measured while relaxed standing, in maximal reaching of the sit-and-reach test and in slumped sitting with a Unilevel inclinometer in 43 infantile male paddlers (23 kayakers and 20 canoeists) (mean age: 13.35 ± 0.59 years). Mean thoracic kyphosis while standing was 42.22o ± 7.76o for kayakers and 37.45o ± 8.68o for canoeists. The mean lumbar lordosis was 27.91o ± 6.21o and 25.70o ± 6.15o, respectively. The thoracic and lumbar curves in the sit-and-reach test were 63.78o ± 6.21o and 33.70o ± 7.18o, respectively, for kayakers, and 65.35o ± 11.48o and 30.55o ± 6.33o for canoeists. No differences were found between them. With regards to the angle references, there were a greater percentage of subjects with a hyperkyphotic curve, especially on the lumbar spine. In conclusion, there is a high frequency of sagittal spinal deformities in maximal bending and in slumped sitting, especially on the lumbar spine, although do not find significant differences in the sagittal spinal curvatures between kayakers and canoeists. Key words: spinal, thoracic, lumbar, posture, paddlers.

cultura, ciencia y deporte

Valoración y comparación de la disposición sagital del raquis entre canoístas y kayakistas de categoría infantil. (Measurement and comparison of sagittal spinal curvatures between infantile canoeists and kayakers)