Relación entre el test de elevación de pierna recta y el test ángulo poplíteo en la medición de la extensibilidad isquiosural

Abstract

Objective To determine the relationship between straight leg raise (SLR) test and active knee extension (AKE) in hamstrings flexibility measurement, reliability of each test, influence of one test over the other and establish the differences between the university students and gender in hamstrings range of motion. Materials and methods A randomized, cross-sectional, experimental design study was conducted. Nineteen healthy subjects (11 women, 8 men) voluntarily participated in the study. Two women were excluded to de having had low back pain in the last month. The subjects were randomly assigned to groups 1 and 2. Group 1 performed the SLR first and then the KEA and Group 2 performed the KEA first and then the SLR. The subjects had 6 min between the two test, with two attempts for each test with a one-minute rest period SLR1 and SLR2 and AKE1 and AKE2, respectively. Results There was no statistically significant relationship between AKE and SLR measurements, with a coefficient of determination of 0.421. Reliability of SLR was 0.741 and 0.866 in AKE. No influence was found between both test and we found a higher range of movement in the male than in female. Conclusions SLR and AKE does not measure hamstrings flexibility equally. We obtained more reliable results with the AKE. One test did not influence the subsequent performance of the other and higher data on extensibility were found in men than in women. However, future research is needed to make a conclusion on this aspect.