Abstract
PurposeThe purpose of the study was to investigate the influence of a 72-h KT application on trunk and lower extremity kinematics during different landing tasks.MethodsTwenty-nine competitive male athletes participated in this study. The sum of knee valgus and lateral trunk lean, symmetry index (SI), and peak angles of lateral trunk lean, hip flexion, knee abduction and flexion were assessed for all participants during single-leg drop landing (SLDL), single-leg vertical drop jump (SLVDJ), vertical drop jump (DLVDJ), and double leg forward jump (DLFJ), at baseline and seventy-two hours following KT application.ResultsThe KT application resulted in more knee flexion and abduction, sum of knee valgus and lateral trunk lean as compared with the non-KT condition during SLDL (P < 0.05). Nonetheless, there were no differences in SI, maximum angle of the lateral trunk lean during SLDL, SLVDJ, nor hip flexion, knee abduction, and flexion during DLVDJ, and DLFJ tasks (P > 0.05).ConclusionsThe research findings suggest that KT after 72-h application may improve knee abduction and sum of knee valgus and lateral trunk lean during SLDL, knee flexion during SLDL and SLVDJ in individuals displaying risky single-leg kinematics. Therefore, KT application may marginally improve high-risk landing kinematics in competitive male athletes.Level of evidenceLevel III.
Highlights
Anterior cruciate ligament (ACL) injuries frequently occur in non-contact situations such as landing [12, 22]
Knee flexion During single-leg drop landing (SLDL) and single leg vertical drop jump (SLVDJ), the kinesio taping (KT) application resulted in more knee flexion as compared to the non-KT condition
The within-subject difference was significant for SLDL (dominant leg: effect size (ES) (95%CI) = -0.45 (-0.83 to -0.07); P = 0.018; non-dominant leg: ES (95%CI) = -0.46 (-0.84 to -0.07); P = 0.031) and SLVDJ (dominant leg: ES (95%CI) = -0.57 (-0.96 to -0.18); P = 0.034; non-dominant leg: ES (95%CI) = -0.45(-0.83 to -0.07); P = 0.040)
Summary
Anterior cruciate ligament (ACL) injuries frequently occur in non-contact situations such as landing [12, 22]. Poor sagittal and frontal plane movement patterns are believed to increase knee injury risk in athletes [10, 25]. Dynamic malalignment patterns comprised of greater ipsilateral trunk lean, hip adduction, hip internal rotation, knee valgus (KV) and tibial internal or external rotation, in addition to less hip and knee flexion, have been associated with greater knee joint loading and subsequently higher non-contact ACL injury risk during landing tasks. Characterized by an erect landing posture and less sagittal plane trunk displacement, stiff landings result in greater ground reaction forces [12], external knee abduction and flexion moments, and smaller. Increased lateral trunk lean causes the ground reaction vector to pass lateral to the knee joint, thereby creating an external knee abduction moment. In regards to knee flexion, knee abduction, and hip flexion, can prevent lower extremity injury [38]
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