Date of Award

Spring 2009

Document Type


Degree Name

Master of Science in Education (MSEd)


Human Movement Sciences


Athletic Training

Committee Director

James Onate

Committee Member

Bonnie Van Lunen

Committee Member

Stacie Ringleb

Call Number for Print

Special Collections LD4331.E44 E86 2009


The use of verbal and video instruction is a simple feedback tool that can be implemented into almost all clinical rehabilitative and prevention programs. The purpose of this study was to determine whether self or a combination of self and expert feedback will have a long term effect on box-drop jump (BDJ), running-stop jump (RS), and sidestep maneuver (SS) lower extremity kinematics (knee flexion, knee valgus, hip flexion, hip abduction) over time in healthy college age female athletes. A repeated measures design was used. Forty-three physically active females (age=21.47±1.55years; height=l.65±0.08m; weight=63.78±12kg) were randomly assigned to three groups; 15 self feedback(S), 15 combo (self and expert) feedback (CB), and 13 control (CT). Subjects performed 5 trials of a box-drop jump for pretest and then received self, combo (self and expert) or no video and verbal feedback about their landing mechanics. Following the intervention, subjects participated in an immediate posttest of 5 trials of the box-drop jump and a transfer test of 5 trials of a running-stop jump. Subjects returned one month later for a retention test consisting of 5 trials of the following: box-drop jump, running-stop jump, and a sidestep maneuver (delayed transfer test). A series of one-way ANOVAs and repeated measures ANOVAs were conducted, with a significance of p≤0.05 a priori. There was a significant feedback group main effect for peak knee flexion during the BDJ and RS, revealing that CB was significantly greater than S indicating a positive transfer. There was also a significant test time main effect, revealing that hip flexion at PKF and peak knee flexion angles at posttest were significantly greater than pretest. Hip flexion at PKF was significantly greater at retention test compared to posttest, revealing that the task was able to be retained. It appears that BDJ verbal and video feedback involving the combination of self and expert video is effective at improving peak knee flexion angles during a BDJ and RS. Also, global combo feedback can improve large joint movements immediately and over time. Future research needs to focus on improving initial contact kinematics and retention of this learning.


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