Brain and Cognitive Changes After Reasoning or Physical Training in Cognitively Normal Seniors

NCT ID: NCT00977418

Last Updated: 2016-07-11

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 60 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2012-06-30
• Study Completion Date: 2013-09-30

Brief Summary

Seniors 65 years of age and older represent one of the fastest growing segments of society with the population doubling within the next 25 years with dramatic rates of mental decline, costing society billions of dollars each year. The proposed research seeks to discover whether relatively short term mental or physical training can enhance gist reasoning, generalize to untrained cognitive areas and modify/strengthen brain function in areas susceptible to aging processes. To identify neuroprotective and non-pharmacological interventions to prevent mental decline and maximize cognitive brain health during the course of the adult lifespan has major public policy implications.

Detailed Description

Background: A significant potential exists to modify the structure and function of the aging human brain given intensive mental stimulation and physical activity. Age-related cognitive decline has consistently been identified on frontal lobe measures of executive control such as reasoning. Concomitantly, a greater vulnerability of frontal brain networks, which subserve executive control functions, has also been identified with aging. Preliminary evidence highlights the potential of reasoning training as well as physical training to modify and strengthen brain and cognitive function in seniors. Evidence from our lab indicates that frontally mediated, gist-based reasoning (defined as the ability to combine detail information to construct abstract meanings) offers a promising cognitive domain to train. Extracting gist meaning from the massive amount of incoming information is one of the most vital mental skills a healthy mind achieves. Purpose: This proposal is an innovative study to obtain data regarding the benefits of a (a) novel gist-based reasoning training program or (b) physical training on frontal-lobe mediated cognitive measures of executive control in cognitively normal seniors. The project will also employ newly developed (a) brain measures to chart changes in brain blood flow and connectivity combined with (b) a cognitive activation task specifically designed to measure brain regions engaged in gist reasoning versus detail processing. The project also examines shorter dose effects, i.e. after 6 weeks and 12 weeks, than previously examined as well as individual differences based on high and low performers for gist and physical training. Methods: 60 cognitively normal seniors between the ages of 60 and 75 years will be recruited for study and randomized into 1 of 3 groups. Each group will consist of 20 participants each: a reasoning-trained, a physical-trained and a wait-listed control group. Participants will be comprehensively screened to insure they are cognitively normal. Prior to intervention, participants' baseline gist and detail processing ability, battery of cognitive functions and fitness measures will be obtained. Structural and functional brain measures will also be obtained. Participants will undergo 12 weeks of gist-based training or physical training with measurement at midpoint, 6 weeks of training, endpoint 12 weeks of training and 4 weeks after training is completed. Training effects will be measured behaviorally in trained areas (reasoning & physical) and untrained cognitive areas. Additionally, structural and functional brain imaging will measure changes in cerebral blood flow, global and regional brain volume, white matter tracts, efficiency, activation patterns, and blood oxygenation with a particular focus on changes to frontal regions. Significance: The current study seeks to discover neuroprotective, nonpharmacological interventions that could prevent mental decline and strengthen cognitive brain health in seniors, with possible societal savings of billions of dollars. This will be one of the first training studies to explore short-term intensive reasoning and physical training, each documented as pivotal to cognitive brain health with the potential to strengthen frontal regions against the losses associated with aging.

Conditions

Hearing Impaired

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: SINGLE

Study Groups

No intervention

Seniors undergo all testing but remain current lifestyle

Group Type: NO_INTERVENTION

No interventions assigned to this group

Training

Groups will undergo either physical or mental training. Physical training is 1 hour aerobic training 3 times per week for 12 weeks. Mental training is 1 hour Strategic Memory Advanced Reasoning Training 3 times per week.

Group Type: EXPERIMENTAL

SMART- Strategic Memory and Reasoning Training

Intervention Type: BEHAVIORAL

Teach people to filter out un necessary or unimportant details to enhance mental efficiency. This training will be done over 12 weeks for 3 hours each week.

Physical Exercise

Intervention Type: OTHER

The group with undergo 1 hour of aerobic exercise (at 50-70 % of the participants max oxygen intake) 3 times a week for 12 weeks.

Interventions

SMART- Strategic Memory and Reasoning Training

Teach people to filter out un necessary or unimportant details to enhance mental efficiency. This training will be done over 12 weeks for 3 hours each week.

Intervention Type: BEHAVIORAL

Physical Exercise

The group with undergo 1 hour of aerobic exercise (at 50-70 % of the participants max oxygen intake) 3 times a week for 12 weeks.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• The study will include 60 cognitively normal seniors between the ages of 60 and 75 years.
• Participants will have normal IQ, be native speakers of English and have a minimum of high school education.

Exclusion Criteria

• Participants with a previous history of stroke, diabetes, untreated hypertension, major surgeries within the past 6 months, major psychiatric disorder, depression or cognitive impairment will be excluded.
• Additionally, anyone that has a condition that would exclude them from MRI will not be included.

• Minimum Eligible Age: 60 Years
• Maximum Eligible Age: 75 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

National Institutes of Health (NIH)

NIH

Sponsor Role: collaborator

The University of Texas at Dallas

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Sandra Chapman, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

The University of Texas at Dallas

Locations

The University of Texas at Dallas

Dallas, Texas, United States

Countries

United States

References

Motes MA, Yezhuvath US, Aslan S, Spence JS, Rypma B, Chapman SB. Higher-order cognitive training effects on processing speed-related neural activity: a randomized trial. Neurobiol Aging. 2018 Feb;62:72-81. doi: 10.1016/j.neurobiolaging.2017.10.003. Epub 2017 Oct 12.

Reference Type: DERIVED

PMID: 29121545 (View on PubMed)

Other Identifiers

NIH 1RC1AG035954-01

Identifier Type: -

Identifier Source: secondary_id

07-19

Identifier Type: -

Identifier Source: org_study_id