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En el esqui nautico, las personas que experimentan paraplejia adoptan una posicion sentada, y la fuerza de prension manual (FPM) les permite agarrar el palonier y ejecutar las pasadas en la disciplina de slalom. Este estudio evaluo los efectos inmediatos en la FPM maxima tras la practica de esqui nautico adaptado, aspecto aun desconocido. En mano dominante se midio la FPM maxima mediante dinamometria manual tras 14 entrenamientos de cuatro esquiadores nauticos varones con lesion medular completa que participaron en un campeonato nacional, con edad media (desviacion estandar) de 37.2 (7.3) anos y 2.5 (1.3) anos de experiencia en esqui nautico. Tras la practica, la FPM maxima se redujo (pre-entrenamiento: 48.4 (3.6) kg; post-entrenamiento: 39.1 (8.7) kg) (p 1.15). Se observo la menor disminucion porcentual, de un 9.8 (8.3)%, para el unico esquiador con nivel avanzado y el de mayor FPM maxima pre-entrenamiento, mientras el esquiador con menor FPM maxima pre-entrenamiento y un nivel intermedio mostro una reduccion del 38.9 (10.6)%. En el conjunto de entrenamientos de los cuatro esquiadores, la reduccion de FPM maxima tras un tiempo de agarre medio de 20.5 min fue del 18.5%, sin correlacion entre estas variables (r = 0.49, p = 0.076). La practica de esqui nautico sentado en la disciplina de slalom por personas que experimentan paraplejia conlleva una disminucion en la FPM maxima de la mano dominante, pudiendo influir el nivel competitivo y la condicion fisica de los esquiadores en el porcentaje de reduccion. === In water skiing, people who experience paraplegia ski in a sitting position, and they rely on hand grip strength (HGS) to grab the tow rope handle and run slalom passes. This study evaluated the immediate effects on maximum HGS after the practice of disabled water skiing, a still unknown aspect. In the dominant hand, maximum HGS was measured by hand-grip dynamometry after 14 practices of four male water skiers with complete spinal cord injury participating in a national championship, with mean age (standard deviation) of 37.2 (7.3) years and 2.5 (1.3) years of experience in water skiing. After practice, maximum HGS was reduced (pre-practice: 48.4 (3.6) kg; post-practice: 39.1 (8.7) kg) (p 1.15). The lowest percentage decrease, 9.8 (8.3)%, was observed for the only skier with advanced level and highest maximum HGS pre-practice, while the skier with lowest maximum HGS pre-practice and an intermediate level showed a reduction of 38.9 (10.6)%. In the set of practices of the four skiers, the maximum HGS reduction after a mean grip time of 20.5 min was 18.5%, with no correlation between these variables (r = 0.49, p = 0.076). Practising slalom water-skiing in sitting position by people experiencing paraplegia leads to a decrease in the maximum HGS of the dominant hand, the percentage decrease may be in relation to competitive level and physical fitness of the skiers.

The effect of slalom practice on handgrip strength of water-skiing athletes with paraplegia