CONTEXT: Anterior cruciate ligament (ACL) injuries are prevalent in female athletes. Specific factors have possible links to increasing a female athlete's chances of suffering an ACL injury. However, it is unclear if augmented feedback may be able to decrease possible risk factors. OBJECTIVE: To compare the effects of task-specific feedback on a repeated tuck-jump maneuver. DESIGN: Double-blind randomized controlled trial. SETTING: Sports-medicine biodynamics center. PATIENTS: 37 female subjects (14.7 +/- 1.5 y, 160.9 +/- 6.8 cm, 54.5 +/- 7.2 kg). INTERVENTION: All athletes received standard off-season training consisting of strength training, plyometrics, and conditioning. They were also videotaped during each session while running on a treadmill at a standardized speed (8 miles/h) and while performing a repeated tuck-jump maneuver for 10 s. The augmented feedback group (AF) received feedback on deficiencies present in a 10-s tuck jump, while the control group (CTRL) received feedback on 10-s treadmill running. MAIN OUTCOME MEASURES: Outcome measurements of tuck-jump deficits were scored by a blinded rater to determine the effects of group (CTRL versus AF) and time (pre- versus posttesting) on changes in measured deficits. RESULTS: A significant interaction of time by group was noted with the task-specific feedback training (p = 0.03). The AF group reduced deficits measured during the tuck-jump assessment by 23.6%, while the CTRL training reduced deficits by 10.6%. CONCLUSIONS: The results of the current study indicate that task-specific feedback is effective for reducing biomechanical risk factors associated with ACL injury. The data also indicate that specific components of the tuck-jump assessment are potentially more modifiable than others.
Copyright Human Kinetics. Reprinted with permission from Human Kinetics (Champaign, IL).

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