## 4 Discussion
The cognitive task seems to increase the plantarflexion angle of the ankle joint in FAI individuals but does not alter the knee joint angles, which may indicate a more pronounced compensatory role of the ankle joint to maintain stability during landing. This finding resonates with the results of [PERSON] et al. [11], who demonstrated that, during dual-task performance, the motor control of the ankle joint may take precedence over cognitive tasks, potentially highlighting the importance of the ankle joint in maintaining postural stability, even when the cognitive resources are divided. Furthermore, the central nervous system's ability to dynamically realign one's attentional resources and motor strategies is likely to mitigate the potential impact of cognitive tasks on joint stability, thereby preserving the overall efficiency of the kinetic chain during landing movements [37]. However, this ability might also lead to changes in the biomechanical characteristics of the related joints, increasing the risk of injury. The motor control adjustments in individuals with FAI under the influence of cognitive tasks may engage a complex neuromuscular control network responsible for the precise regulation of landing movements through the integration of proprioceptive, visual, and vestibular information [38]. [PERSON] et al. [39] demonstrated, through experiments, that patients with CAI exhibited poorer postural stability when performing cognitive-motor dual tasks compared to healthy individuals, and a cognitive task of a certain degree can hinder the activation of the leg stabilizer muscles. [PERSON] et al. [10] also confirmed this view, finding that the movement patterns of the ankle joint in individuals with FAI changed when performing cognitive-motor dual tasks, and an additional cognitive load increased the risk of recurrent ankle sprains. [PERSON] et al. 's [40] research on FAI individuals performing the n-back task during single- and double-leg standing also found similar results, indicating that cognitive tasks significantly affect posture control in individuals with FAI. As [PERSON] et al. [41] emphasized the complex interplay between proprioception and cognitive control in movement execution, highlighting the importance of these sensory inputs for effective motor control, the reason behind these changes may lie in the central nervous system's need to balance the allocation of limited attentional resources between the competing demands of the cognitive task and postural control [42]. This balancing act can result in a compromise in the motor control strategies, particularly in individuals with FAI, who already exhibit deficits in proprioceptive acuity and neuromuscular control [43; 44]. These studies support the notion that, while the hip joint maintains its biomechanical integrity during landing, the ankle joint in individuals with FAI may adopt a more pronounced compensatory role, especially under conditions of cognitive load. The reallocation of attentional resources by individuals with FAI during cognitive tasks may be linked to diminished proprioception, leading to increased reliance on cognitive control to offset these proprioceptive deficits, especially under cognitive tasks' influences [45]. The increased reliance on cognition may be associated with brain plasticity, enabling individuals with FAI to adapt to ankle injuries by altering their neural network connections, thereby improving their motor control [46]. However, an increased plantar flexion angle might disrupt the natural adaptive movement behavior, affecting the overall motor performance. Furthermore, the motor control adjustments observed in individuals with FAI are multifaceted, influenced not only by physiological factors but also significantly by psychological components such as anxiety, stress, and re-injury apprehension.