Cortical Activation and Cognitive-Motor Learning

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

18 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-01-15

Study Completion Date

2021-11-30

Brief Summary

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The purpose of this research study is to assess the effects of dual-task training using a dynamic balance task and an auditory reaction time task on dual-task performance in healthy young adults and to assess the cortical activity within the prefrontal and sensorimotor cortices in response to dual-task training using functional near infrared spectroscopy (fNIRS).

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Detailed Description

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The purpose of this study is to assess the influence of a dual-task (combined motor-cognitive task) on dual-task performance of a complex dynamic stability task in healthy young adults and to assess the effects of dual-task training on cognitive-motor learning and cortical activation in healthy young adults. A dual-task is defined as concurrent performance of two tasks, usually a cognitive and motor task, that can be performed independently and have distinct and separate goals. Individuals engage in dual tasks every day and must allocate attentional resources to each task. While recognition of susceptibility to performance decrements in dual-task settings may be difficult, increased dual-task complexity is associated with decreased performance in one or both tasks. The well documented effects of dual-task practice represent a promising approach to improve dual-task performance for clinical populations such as individuals with neurological conditions or older individuals, in which complex multitask situations can increase fall risk due to hindered balance and walking performance. Similarly, young adults have demonstrated performance decrements while executing a dual-task that involved a combined balance and cognitive task. Research of dual-task training in healthy young cohort has indicated significant improvements in both motor and cognitive task performance in dual-task situations, suggesting the efficiency of this intervention strategy. However, most of these studies have investigated effects of a simple postural task combined with cognitive task training on dual-task performance. Effects of dual-task training using a complex dynamic postural stability task on dual-task performance of such complex task is lacking. Moreover, existing studies demonstrate conflicting evidence of dual-task training effects among healthy young adults since improvements in the motor task only have been largely reported. It is crucial to understand dual-task training effects on performance of a complex cognitive-motor task since postural control involves complex integration of somatosensory, vestibular, and visual systems. Our experimental paradigm will challenge these systems; thus, findings of this study would inform our intervention strategies in a variety of populations ranging from athletes to individuals with neurological conditions.

Dynamic postural stability is an integral aspect of postural control and it involves complex interaction of prefrontal, somatosensory, vestibular, and visual systems. However, a motor task involving complex interaction of these systems combined with cognitive task challenges has not been investigated thoroughly. Moreover, neural activation within these cortical areas during dual-task performance and effects of dual-task training are largely unknown.

Since, coordinated control of the body requires integration of all these systems (i.e. prefrontal, somatosensory, vestibular, and visual), it is important to systemically study the interference of an additional attention-demanding task, such as an auditory stimulus reaction time task on interaction of these systems that may contribute to decreased postural stability. Moreover, it is important to investigate if training on such a complex dual-task can reduce motor-cognitive interference, improve postural stability, and optimize cortical activation in complex dual-task conditions.

Conditions

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Dual-task Healthy Adults

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Dual-task training

Dual-task training will consist of balancing on the dynamic stability platform and responding to auditory stimuli. Participants will perform 18 trials total in 3 blocks of 6 trials. Each trial will be 30 seconds (s) in duration followed by 30 s of rest (i.e. quiet standing on the platform while holding onto the rails.) Between each training block, the participant will step off the platform and rest for 2 minutes. Dual-task training will occur on consecutive visits 2-6.

Group Type EXPERIMENTAL

Dual-task training

Intervention Type BEHAVIORAL

See descriptions under arm description. The dual-task training will occur across a total of 5 consecutive workday visits.

Interventions

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Dual-task training

See descriptions under arm description. The dual-task training will occur across a total of 5 consecutive workday visits.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

1. Healthy young adults
2. Right-handed

Exclusion Criteria

1. Individuals with cognitive deficits or communication problems
2. Individuals with impaired vision
3. Individuals with balance disorders such as vestibular disorders, etc.
4. Individuals with known cardiorespiratory dysfunctions
5. Individuals with presence of lower extremity condition, injury, or surgery within last 3 months which could compromise training
6. Individuals with history of concussion

Minimum Eligible Age

18 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes