| Objective: Simultaneity " Motor-cognitive training" is the simultaneous completion of a motor task and a cognitive task.Exergame is a training method that combines motor tasks with cognitive tasks.Treadmill + cognitive training is an independent training method of motor and cognitive training,although the two training methods have been proved to be effective in reducing the incidence of falls in the elderly.However,existing studies have not clarified the effects of these two types of Motor-cognitive training,nor have they been able to comprehensively evaluate the effects of these two types of training on cognition,gait and balance in the elderly.Therefore,in this study,the elderly aged 65-74 years old were selected as subjects,and the acute effects of interactive motor-cognitive training and treadmill + cognitive training on executive function,posture control and gait of the elderly were compared and analyzed,providing theoretical support and practical significance for the promotion and application of interactive motor cognitive training.Method: 24 participants(7 males,17 females)were recruited through community publicity and distribution of leaflets.In a single-blind,intra-group crossover design experiment,participants were randomly selected to participate in 30 minutes of moderate exercise intensity acute intervention experiment under three conditions: 1)motion sensing game;2)Treadmill + cognitive training;3)Read for 30 minutes.Three rounds of each study participant’s experiment were conducted at the same time,with a minimum interval of 72 hours between each experiment.Study participants wore Polar heart rate monitors during training.Heart rate and RPE were recorded during exercise.Gait,postural control and executive function tests were performed before and immediately after intervention.Result: 1.Executive function changes:(1)Inhibitory function: the response time of somatosensory exercise group before intervention was significantly higher than that after intervention(p<0.05),and the response time of treadmill + cognitive training group before intervention was significantly higher than that after intervention(p <0.05).In terms of accuracy,the somatosensory exercise group was significantly lower before intervention than after intervention(p < 0.05).Under consistent conditions,the response time of treadmill + cognitive training group was significantly higher before intervention than after intervention(p < 0.05).(2)Cognitive flexibility: in mixed task,the response time of somatosensory exercise group before intervention was significantly higher than that after intervention(p < 0.05),and the response time of treadmill + cognitive training group before intervention was significantly higher than that after intervention(p < 0.05).The accuracy of reading group was significantly lower before intervention than after intervention(p < 0.05),and treadmill + cognitive training group was significantly lower before intervention than after intervention(p <0.001).2.Changes in postural control ability: Under eye-opening condition,COP track length(p < 0.05)and average speed(p < 0.05)were statistically significant in the three groups.COP track length of somatosensory exercise group and treadmill group was statistically significant after intervention(p < 0.05).COP track length of reading group and running group was statistically significant after intervention(p <0.05).3.Gait: Dual task: there was no interaction in walking speed,stride length,stride length,support phase and swing phase among the three groups of elderly people.There were significant differences in the speed of the elderly in the dual task(p <0.05),and the walking speed of the elderly in the somatosensory exercise group was significantly higher than that in the pre-test(p < 0.05).Conclusion: 1.Both types of simultaneous motor and cognitive training can improve executive function in the elderly,but different exercise interventions have different effects on executive function in the elderly.2.There is a window period of fall risk in the elderly after treadmill + cognitive training exercise;The influence of somatosensory exercise on postural control of the elderly was small.3.Somatosensory exercise is superior to treadmill + cognitive training in improving gait stability in the elderly. |
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