Augmented feedback reduces ground reaction forces in the landing phase of the volleyball spike jump.
BACKGROUND
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.


METHODS
Pretest posttest experimental design.


METHODS
University biomechanics laboratory.


METHODS
Fifteen female Division 1 intercollegiate volleyball players.


METHODS
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.


METHODS
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.
Auckland University of Technology, School of Sport and Recreation in Auckland, New Zealand.
John B
JB
Cronin
Eadric
E
Bressel
Loren
L
Fkinn
D000222:Adaptation, Physiological / Q000502:physiology*; D000293:Adolescent; D000328:Adult; D001696:Biomechanical Phenomena; D005246:Feedback / Q000502:physiology*; D005260:Female; D006801:Humans; D007866:Leg / Q000502:physiology; D009068:Movement / Q000502:physiology*; D054798:Volleyball / Q000502:physiology*; D016474:Weight-Bearing / Q000502:physiology