Pathological and Non-pathological Aging, Physical Activity, Genotype and Cognition

NCT ID: NCT02520232

Last Updated: 2019-02-25

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 139 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2015-06-30
• Study Completion Date: 2018-05-11

Brief Summary

Alzheimer's disease (AD) is an irreversible, progressive brain disease. It is the most common form of dementia and the major cause of functional dependence in the elderly. Since there is currently no cure for Alzheimer's disease, a growing number of scientists pointed out the interest to use non-pharmacological alternative therapeutic approaches in order to slow down the decline of physical and cognitive resources and improve quality of life of patients with Alzheimer's disease. Several narrative and meta-analytical reviews suggest that regular practice of physical activity delays the occurrence of cognitive decline and slows down Alzheimer's disease progress when compared with sedentary people. Despite the growing interest of the scientific community for the positive effects of chronic exercise on mental health and cognitive functions, the clinical reality of this phenomenon remains to be clearly established, more particularly in aged people suffering from neurodegenerative diseases.The first aim of this research project is to test if chronic exercise reduces and even compensates for a cognitive decline in both patients with prodromal Alzheimer's disease (i.e., no dementia) and aging people with no pathology of central nervous system. The second aim of this research project is to examine whether an increasing of cerebral blood flow induced by chronic exercise can explain this positive effect.

Detailed Description

Several epidemiologic studies conducted in North America and in Europe have shown that the regular practice of physical activity, in opposition to a sedentary life, is associated with a reduced risk of developing neurodegenerative diseases such as AD. These results have been strengthened by cross-sectional and interventional studies, which have shown that physical activity slows down the decline of cognitive functions typically observed in normal and pathological aging and retards the onset of dementia. The positive effects of chronic exercise on cerebral and cognitive ageing are now recognised by scientists and clinicians; however, the mechanisms underlying these effects in humans are poorly understood and there is a real need for randomised controlled trial (RCT) on this topic. The objective of this research project is to understand the compensatory mechanisms that may account for the positive effects of regular physical activity on pathological and non-pathological cerebral ageing in human and in particular in people presenting prodromal AD. All participants will be separated into six groups corresponding to the combination of two independent variables: the population type (aged people without any neurological disease vs. prodromal Alzheimer's disease participants) and the type of physical activity program they will follow during six months (aerobic and strength exercise program, stretching and balance program, or maintaining sedentary life style). Cognitive performance, cardiovascular health, brain integrity and cerebral functioning will be assessed at two or three different times: before the onset of the training program (pre-test), at the end of the training period (post-test 1) and six months after the end of the training program (post-test 2).

Conditions

Alzheimer's Disease

Study Design

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

Study Groups

Physical activity program (A)

Physical exercises

Group Type: EXPERIMENTAL

Combination of aerobic and strength exercises

Intervention Type: BEHAVIORAL

Combination of aerobic and strength exercises

Physical activity program (B)

Physical exercises

Group Type: EXPERIMENTAL

Stretching and balance exercise program

Intervention Type: BEHAVIORAL

Stretching and balance exercise program

Control

No physical exercices assigned by the protocol

Group Type: NO_INTERVENTION

No interventions assigned to this group

Interventions

Combination of aerobic and strength exercises

Combination of aerobic and strength exercises

Intervention Type: BEHAVIORAL

Stretching and balance exercise program

Stretching and balance exercise program

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Aged between 60 and 80 years
• Retired
• Complete autonomy on the following four instrumental activities of daily living scales (IADL) : ability to use telephone, mode of transportation, responsibility for own medications and ability to handle finances, level of physical activity practice ≤ 2
• 18.5 ≤ BMI < 40
• MMSE ≥ 25
• For prodromal Alzheimer Disease patients : subjective memory complaints of the participant, objective evidence of impaired encoding in episodic memory (Grober-Buschke free recall score < 17).

Exclusion Criteria

• Presence of a counter-indication for Magnetic Resonance Imaging , presence of a counter-indication for Positron Emission TomographyScan with [18F]-Flutemetamol, presence of any health problem preventing travel to the imaging service of the University Hospital, being under the legal guardianship of another person or being unable to provide consent to participate

• Minimum Eligible Age: 60 Years
• Maximum Eligible Age: 80 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Poitiers University Hospital

OTHER

Sponsor Role: collaborator

Centre National de la Recherche Scientifique, France

OTHER

Sponsor Role: collaborator

University of Poitiers

OTHER

Sponsor Role: collaborator

University of Bordeaux

OTHER

Sponsor Role: collaborator

University Hospital, Bordeaux

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Michèle ALLARD

Role: PRINCIPAL_INVESTIGATOR

University Hospital, Bordeaux

Michel AUDIFFREN

Role: STUDY_CHAIR

CNRS Poitiers

Hélène AMIEVA

Role: STUDY_CHAIR

University of Bordeaux

Locations

University Hospital Bordeaux, France

Bordeaux, , France

University Hospital, Poitiers

Poitiers, , France

Countries

France

Other Identifiers

CHUBX 2013/22

Identifier Type: -

Identifier Source: org_study_id