Augmented feedback reduces ground reaction forces in the landing phase of the volleyball spike jump
Place of Publication
Faculty of Computing, Health and Science
School of Exercise, Biomedical and Health Science
Context: Frequency and magnitude of ground reaction forces (GRF) have been implicated in causing injuries such as "jumpers knee." Objective: To investigate whether a single session of augmented feedback concerning landing technique would decrease GRF. Design: Pretest posttest experimental design. Setting: University biomechanics laboratory. Participants: Fifteen female Division 1 intercollegiate volleyball players. Intervention: Participants were required to land on a force platform after spiking a volleyball from a four-step approach before and after an intervention involving visual and aural augmented feedback on correct jumping and landing technique. Main Outcome Measures: Mediolateral (ML), anterioposterior (AP), and vertical (V) GRF normalized to body weight (BW). Results: Augmented feedback was found to significantly (P = 0.01) decrease VGRF by 23.6% but not ML (25%, P = 0.16) and AP (4.9%, P = 0.40) peak GRF. Conclusions: A single session of augmented feedback may be effective in reducing VGRF in collegiate athletes.