Background Two-dimensional frontal plane knee projection angle (FPKPA) has been used to assess dynamic knee alignment during single leg squat in athletes with patellofemoral pain and to screen athletes who are at risk for anterior cruciate ligament (ACL) injury. The Dynamic Taping (DT) could be used in motor control training to decrease load of lower limbs muscles and improve movement pattern.

Objective Compare FPKPA before and after the application of dynamic taping in female volleyball athletes.

Design Cross-sectional study.

Setting The FPKPA was used to measure knee medial motion. The ICC was 0.90 and the standard error of measurement (SEM) was 1.65°. All these measurements were performed at Minas Tenis Clube.

Patients (or Participants) 18 female volleyball players participated in this study; the mean for age was 19.44±4.48 years; body mass, 72.28±8.20 kg; and height 182.67±7.63 cm.

Interventions (or Assessment of Risk Factors) A spiral DT(double-layer /Powerband) technique was placed with the hip in 40° abduction, 20° extension and full available external rotation, aiming to resist hip adduction, flexion and internal rotation. The tape was applied by the same professional stretching until resistance begins such that increasing resistance would be created with any movement towards adduction, internal rotation and flexion thereby creating a deceleration force.

Main Outcome Measurements The FPKPA was recorded during single leg squat until 80° knee flexion before and after the Dynamic Taping^(R) application.

Results 10 of 18 athletes had high FPKPA (>8^o) and the T-test revealed statistical difference pre and post DT (p<0,0001). Pre DT Mean of FPKPA was 10.5^o and Post DT mean was 5.4^o.

Conclusions This study has shown the DT application decreased FPKPA during single leg squat in female volleyball athletes. This approach could be an important tool to enhance movement quality and prevent knee injuries.