نمونه ترجمه تخصصی فیزیولوژی ورزشی درباره آسیب های غیر برخوردی

Non-contact injuries

Studies have shown that ACL injury is one of the most common injuries in soccer [10]. About 70-84% of ACL injuries in athletes are none-contact injuries [10]. These injuries are mostly the outcome of sheer maneuver or stop along with deceleration or landing from jump posture [18]. Other studies have listed the biomechanical risk factors of ACL non-contact injuries when performing risky activities such as sheer maneuvers including decrease of control on the trunk [24], decrease of the thigh and knee flexion angle [25], increase in adductor torque and the knee valgus angle [26], and increase in ground perpendicular and posterior reaction force [25]. On the other hand, athletes need to modify their motion pattern in practice [27, 28]. Depending on motion demand, sheer maneuvers might be performed at different angles or in an anticipated/unanticipated manner in response to an external stimulus. During performing an anticipated sheer maneuver, the athlete may place the lower limbs and the trunk in a suitable position to produce adequate momentum [10, 29]. However, in the case on unanticipated sheer maneuver say in response to a teammate or an opponent’s action, the athlete’s biomechanics might be changed due to at least two reasons; 1- doubt about choosing the right motion and 2- limited time to react to the stimulus. Thereby, it is very common that the athlete is not in the proper position to absorb high collision forces and create adequate momentum to perform the optimum shear maneuver [30]. However, sudden reactions to an external stimulus such as leaving behind an opponent or chasing the ball trajectory in team sports entail successful performance [27]. In an unanticipated posture and to demonstrate a satisfactory performance, the athlete needs to perform adjustments in their posture before the task comes forth [31, 32]. Some studies have shown that in comparison with anticipated posture, performing shear maneuvers in an unanticipated posture is featured with the lower limbs biomechanics changes and an increase of the risk of ACL injuries [27, 33-35].