Evidence from subgroup comparisons showed no difference in treatment-related changes between cognitive-motor and motor-motor dual tasks , or when interventions were compared to active or inactive controls .
In summary , physical exercise interventions can improve dual-task walking in older adults primarily by increasing the speed at which individuals walk in dual-task conditions .
Currently , evidence concerning whether physical exercise interventions reduce DTC or alter the self-selected dual-task strategy during unobstructed walking is greatly lacking , mainly due to the failure of studies to measure and report reciprocal dual-task effects on the non-gait task
Dual-task interference during walking can substantially limit mobility and increase the risk of  falls among community-dwelling older adults .
Previous systematic review s examining intervention effects on dual-task gait and mobility have not assessed relative dual-task costs ( DTC ) or investigated whether there are differences in treatment-related changes based on the type of dual task or the type of control group .
The purpose of this systematic review was to examine the effects of physical exercise interventions on dual-task performance during walking in older adults .
Effect of music-based multitask training on gait, balance, and fall risk in elderly people: a randomized controlled trial.
BACKGROUND Falls occur mainly while walking or performing concurrent tasks . We determined whether a music-based multitask exercise program improves gait and balance and reduces fall risk  in elderly individuals . METHODS We conducted a 12-month r and omized controlled trial involving 134 community-dwelling individuals older than 65 years , who are at increased risk of falling . They were r and omly assigned to an intervention group ( n = 66 ) or a delayed intervention control group scheduled to start the program 6 months later ( n = 68 ) . The intervention was a 6-month multitask exercise program performed to the rhythm of piano music .  Change in gait variability under dual-task condition from baseline to 6 months was the primary end point . Secondary outcomes included changes in balance , functional performances , and fall risk . RESULTS At 6 months , there was a reduction in stride length variability ( adjusted mean difference , -1.4 % ; P < .002 ) under dual-task condition in the intervention group , compared with the delayed intervention control group . Balance and functional tests improved compared with the control group . There were fewer falls in the intervention group ( incidence rate ratio , 0.46 ; 95 % confidence interval , 0.27 - 0.79 ) and a lower risk of falling ( relative risk , 0.61 ; 95 % confidence interval , 0.39 - 0.96 ) . Similar changes occurred in the delayed intervention control group during the second 6-month period with intervention . The benefit of the intervention on gait variability persisted 6 months later . CONCLUSION In community-dwelling older people at increased risk of falling , a 6-month music-based multitask exercise program improved gait under dual-task condition , improved balance , and reduced both the rate of falls and the risk of falling . Trial Registration clinical trials.gov Identifier : NCT01107288
Evidence from subgroup comparisons showed no difference in treatment-related changes between cognitive-motor and motor-motor dual tasks , or when interventions were compared to active or inactive controls .
In summary , physical exercise interventions can improve dual-task walking in older adults primarily by increasing the speed at which individuals walk in dual-task conditions .
Currently , evidence concerning whether physical exercise interventions reduce DTC or alter the self-selected dual-task strategy during unobstructed walking is greatly lacking , mainly due to the failure of studies to measure and report reciprocal dual-task effects on the non-gait task
Dual-task interference during walking can substantially limit mobility and increase the risk of  falls among community-dwelling older adults .
Previous systematic review s examining intervention effects on dual-task gait and mobility have not assessed relative dual-task costs ( DTC ) or investigated whether there are differences in treatment-related changes based on the type of dual task or the type of control group .
The purpose of this systematic review was to examine the effects of physical exercise interventions on dual-task performance during walking in older adults .