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 .
Effects of instruction in jumping technique and experience jumping on ground reaction forces.
STUDY DESIGN R and omized , controlled trial . OBJECTIVE To determine the roles that augmented feedback from instruction in jumping technique and sensory feedback from experience jumping play in assisting individuals to l and softly from a jump . BACKGROUND Jumping and l and ing activities play a major role in many sports and daily activities . Feedback may assist individuals in decreasing l and ing forces and thus reduce the chances of sustaining an injury . METHODS AND MEASURES Nonimpaired subjects ( n = 91 ) were r and omly assigned to either an augmented or sensory feedback condition . All subjects were asked to jump from a box 300 mm in height and l and as softly as possible on a force plate . Pre-intervention ground reaction forces ( GRF ) were recorded . Subjects in the augmented feedback condition were then given instructions to focus on hip and knee joint motion as well as a forefoot l and ing technique for their next jump . Subjects in the sensory feedback condition were asked to use the experience of their first jump to l and softly for their next jump . Post-intervention GRFs were recorded and all GRFs were expressed as a multiple of body weight . RESULTS Those in the augmented condition significantly reduced their GRF scores from pre-(mean = 4.53 + /- 1.51 ) to post-(mean = 3.57 + /- 1.10 ) jump , whereas those in the sensory condition did not ( mean pre GRF = 4.51 + /- 1.77 ; mean post GRF = 4.33 + /- 1.54 ) . CONCLUSIONS High ground reaction forces may be a precipitating factor associated with an injury , where the site of tissue damage would benefit from decreased forces . These findings support the use of instructions related to joint motion to reduce l and ing forces
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 .