Conclusion The results of this systematic review indicate that motor performance is further impaired by placing a cognitive load on individuals in population s with musculoskeletal injury .
More dem and ing tasks such as gait appear to be more affected in injured individuals than simple balance tasks .
Background Research suggests that individuals with musculoskeletal injury may have difficulty negotiating physical tasks when they are combined with cognitive loads .
Objective Our objective was to conduct a systematic review to underst and the effects of increased cognitive dem and on movement patterns among individuals with musculoskeletal injuries .
Postural sway in low back pain: Effects of dual tasks.
Recurrence quantification analysis ( RQA ) , a nonlinear method of postural analysis , was used to explore the effects of dual-tasking on postural performance in people with nonspecific low back pain ( LBP ) compared with healthy participants .  Postural performance was quantified by RQA % recurrence , % determinism , entropy and trend .  People with nonspecific LBP ( n=22 ) and unimpaired individuals ( n=22 ) r and omly performed quiet st and ing tasks with three levels of difficulty ( rigid-surface eyes open , rigid-surface eyes closed and foam-surface eyes closed ) . These tasks were performed in isolation or concurrently with an easy or difficult cognitive task . Increasing postural difficulty was associated with higher % determinism , higher entropy and lower trend in anteroposterior ( AP ) and mediolateral ( ML ) directions in people with LBP and healthy participants .  All RQA variables in the ML direction decreased as cognitive conditions became more difficult . Significant interactions between group and cognitive difficulty were shown for % recurrence , % determinism and trend in the AP direction . While healthy participants decreased % recurrence and trend by increasing the level of cognitive difficulty , the LBP patients did not . This preliminary study suggests that LBP may be one factor that modulates the posture-cognition interaction
Conclusion The results of this systematic review indicate that motor performance is further impaired by placing a cognitive load on individuals in population s with musculoskeletal injury .
More dem and ing tasks such as gait appear to be more affected in injured individuals than simple balance tasks .
Background Research suggests that individuals with musculoskeletal injury may have difficulty negotiating physical tasks when they are combined with cognitive loads .
Objective Our objective was to conduct a systematic review to underst and the effects of increased cognitive dem and on movement patterns among individuals with musculoskeletal injuries .