THE RELATIONSHIP BETWEEN ABDOMINAL MUSCULAR STRENGTH AND QUADRICEPS ANGLE IN SUBJECTS WITH PATELLOFEMORAL PAIN

  • Bryan Christensen
  • Hidefusa Okamatsu
Keywords: patellofemoral pain syndrome, Q-angle, double leg lowering test, hip flexors

Abstract

The purpose of this study was to investigate the correlation between abdominal flexor muscle strength and Q-angle. A total of 45 subjects participated; Q-angle and abdominal flexor strength utilizing a double-leg lowering test (DLLT) were measured. The relationship between abdominal flexor strength and Q-angle was investigated using a Pearson r correlation test. A t-test was used to compare patellofemeral pain syndrome (PFPS) to non-PFPS groups, and to evaluate gender differences. A significant correlation was found between Q-angle and abdominal flexor strength in both genders (male r =.62, p<.001; female r =.52, p=0.019). No significant differences were found in Q-angle between PFPS and Non-PFPS groups (t =.512, p =.61). There was a significant difference in abdominal flexor strength between genders (t=-4.29, p<.0001).