Validez del test sit-and-reach para valorar la extensibilidad isquiosural en mujeres mayores
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2015
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Introducción: la disposición del raquis lumbo-sacro y la distancia alcanzada en el test sit-and-reach han sido propuestas para valorar la extensibilidad isquiosural, siendo su validez diferente en función de la población analizada.
Objetivo: determinar la validez del ángulo lumbo-horizontal en flexión y la distancia alcanzada en el test sit-and-reach como criterio de extensibilidad isquiosural en mujeres mayores.
Metodología: un total de 120 mujeres mayores realizaron aleatoriamente los test de elevación de pierna recta (EPR) con ambas piernas y el test sit-and-reach (SR). En este último se valoró la distancia alcanzada y la disposición del raquis lumbo-sacro (L-Hfx) al alcanzar la posición de máxima flexión del tronco.
Resultados y discusión: los valores medios en el EPR fueron 81,70 ± 13,83o y 82,10 ± 14,36º en las piernas izquierda y derecha, respectivamente. La media del EPR de ambas piernas fue de 81,90 ± 12,70o. La distancia media en el SR fue de -1,54 ± 8,09 cm. En el L-Hfx, el valor medio fue de 91,08º ± 9,32º. La correlación entre el test EPR medio de ambas piernas respecto a la distancia alcanzada en el test DDP y el ángulo L-Hfx fueron moderados (L-Hfx: r = -0,72, p < 0,01; SR: r = 0,70, p < 0,01). Ambas variables, de forma independiente, explicaron alrededor del 50% de la varianza (L-Hfx: R2 = 0,52; p < 0,001; SR: R2 = 0,49; p < 0,001).
Conclusiones: la validez de la disposición del raquis lumbo-sacro en mujeres mayores es moderada, siendo similar a la obtenida por la distancia alcanzada en el test sit-and-reach.
Introduction: lumbo-sacral posture and the sit-and-reach score have been proposed as measures of hamstring extensibility. However, the validity is influenced by sample characteristics. Objective: to determine the validity of lumbo-horizontal angle and score in the sit-and-reach test as measures of hamstring extensibility in older women. Method: a hundred and twenty older women performed the straight leg raise test with both leg, and the sit-and-reach test (SR) in a random order. For the sit-and-reach test, the score and the lumbo-sacral posture in bending (lumbo-horizontal angle, L-Hfx) were measured. Results and discussion: the mean values of straight leg raise in left and right leg were 81.70 ± 13.83º and 82.10 ± 14.36º, respectively. The mean value of EPR of both legs was 81.90 ± 12.70º. The mean values of SR score and L-Hfx were -1.54 ± 8.09 cm and 91.08º ± 9.32º, respectively. The correlation values between the mean straight leg raise test with respect to lumbo-sacral posture and SR score were moderate (L-Hfx: r = -0.72, p < 0.01; SR: r = 0.70, p < 0.01). Both variables independently explained about 50% of the variance (L-Hfx: R2 = 0.52, p < 0,001; SR: R2 = 0.49, p < 0,001). Conclusions: the validity of lumbo-sacral posture in bending as measure of hamstring muscle extensibility on older women is moderate, with similar values than SR score.
Introduction: lumbo-sacral posture and the sit-and-reach score have been proposed as measures of hamstring extensibility. However, the validity is influenced by sample characteristics. Objective: to determine the validity of lumbo-horizontal angle and score in the sit-and-reach test as measures of hamstring extensibility in older women. Method: a hundred and twenty older women performed the straight leg raise test with both leg, and the sit-and-reach test (SR) in a random order. For the sit-and-reach test, the score and the lumbo-sacral posture in bending (lumbo-horizontal angle, L-Hfx) were measured. Results and discussion: the mean values of straight leg raise in left and right leg were 81.70 ± 13.83º and 82.10 ± 14.36º, respectively. The mean value of EPR of both legs was 81.90 ± 12.70º. The mean values of SR score and L-Hfx were -1.54 ± 8.09 cm and 91.08º ± 9.32º, respectively. The correlation values between the mean straight leg raise test with respect to lumbo-sacral posture and SR score were moderate (L-Hfx: r = -0.72, p < 0.01; SR: r = 0.70, p < 0.01). Both variables independently explained about 50% of the variance (L-Hfx: R2 = 0.52, p < 0,001; SR: R2 = 0.49, p < 0,001). Conclusions: the validity of lumbo-sacral posture in bending as measure of hamstring muscle extensibility on older women is moderate, with similar values than SR score.
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