Knee joint kinematics and neuromuscular responses in female athletes during and after multi-directional perturbations.

Knee joint kinematics and neuromuscular responses in female athletes during and after multi-directional perturbations. Hum Mov Sci. 2020 Apr;70:102596 Authors: Damavandi M, Mahendrarajah L, Dixon PC, DeMont R Abstract The purpose of this study was to investigate weight-bearing knee joint kinematic and neuromuscular responses during lateral, posterior, rotational, and combination (simultaneous lateral, posterior, and rotational motions) perturbations and post-perturbations phases in 30° flexed-knee and straight-knee conditions. Thirteen healthy female athletes participated. Knee joint angles and muscle activity of vastus lateralis (VL), vastus medialis (VM), biceps femoris (BF), semitendinosus (ST), lateral gastrocnemius (LG), and medial gastrocnemius (MD) muscles were computed. Knee abducted during lateral perturbations, whereas it adducted during the other perturbations. It was internally rotated during flexed-knee and externally rotated during straight-knee perturbations and post-perturbations. VL and VM's mean and maximum activities during flexed-knee perturbations were greater than those of straight-knee condition. BF's mean activities were greater during flexed-knee perturbations compared with straight-knee condition, while its maximum activities observed during combination perturbations. ST's maximum activities during combination perturbations were greatest compared with the other perturbations. LG and MG's activities were gre...
Source: Human Movement Science - Category: Neurology Authors: Tags: Hum Mov Sci Source Type: research