VAF should be considered in the rehabilitation of lower extremity musculoskeletal dysfunctions .
However , it can not be unequivocally confirmed that VAF is effective in this population , owing to study heterogeneity and a lack of high- quality evidence .
Nevertheless , positive effects on lower extremity biomechanics and postural control have been identified .
BACKGROUND Verbal augmented feedback ( VAF ) is commonly used in physiotherapy rehabilitation of individuals with lower extremity musculoskeletal dysfunction or to induce motor learning for injury prevention .
Its effectiveness for acquisition , retention and transfer of learning of new skills in this population is unknown .
OBJECTIVES First , to investigate the effect of VAF for rehabilitation and prevention of lower extremity musculoskeletal dysfunction .
Second , to determine its effect on motor learning and the stages of acquisition , retention and transfer in this population .
The effect of videotape augmented feedback on drop jump landing strategy: Implications for anterior cruciate ligament and patellofemoral joint injury prevention.
BACKGROUND Modification of high-risk movement strategies such as dynamic knee valgus is key to the reduction of anterior cruciate ligament ( ACL ) and patellofemoral joint ( PFJ ) injuries . Augmented feedback , which includes video and verbal feedback , could offer a quick , simple and effective alternative to training programs for altering high-risk movement patterns . It is not clear whether feedback can reduce dynamic knee valgus measured using frontal plane projection angle ( FPPA ) . METHODS Vertical ground reaction force ( vGRF ) , two-dimensional FPPA of the knee , contact time and jump height of 20 recreationally active university students were measured during a drop jump task pre- and post- an augmented feedback intervention .  A control group of eight recreationally active university students were also studied at baseline and repeat test . RESULTS There was a significant reduction in vGRF ( p=0.033 ) , FPPA ( p<0.001 ) and jump height ( p<0.001 ) and an increase in contact time ( p<0.001 ) post feedback in the intervention group . No changes were evident in the control group . CONCLUSION Augmented feedback leads to significant decreases in vGRF , FPPA and contact time which may help to reduce ACL and PFJ injury risk . However , these changes may result in decreased performance . CLINICAL RELEVANCE Augmented feedback reduces dynamic knee valgus , as measured via FPPA , and forces experienced during the drop jump task and therefore could be used as a tool for helping decrease ACL and PFJ injury risk prior to , or as part of , the implementation of injury prevention training programs
VAF should be considered in the rehabilitation of lower extremity musculoskeletal dysfunctions .
However , it can not be unequivocally confirmed that VAF is effective in this population , owing to study heterogeneity and a lack of high- quality evidence .
Nevertheless , positive effects on lower extremity biomechanics and postural control have been identified .
BACKGROUND Verbal augmented feedback ( VAF ) is commonly used in physiotherapy rehabilitation of individuals with lower extremity musculoskeletal dysfunction or to induce motor learning for injury prevention .
Its effectiveness for acquisition , retention and transfer of learning of new skills in this population is unknown .
OBJECTIVES First , to investigate the effect of VAF for rehabilitation and prevention of lower extremity musculoskeletal dysfunction .
Second , to determine its effect on motor learning and the stages of acquisition , retention and transfer in this population .