Program for African American Cognition & Exercise (PAACE)
23 juni 2020 uppdaterad av: Robert L. Newton, Jr., Pennington Biomedical Research Center
The study is designed to develop and evaluate a physical activity promotion program among elderly African Americans with a long-term goal of reducing risk of Alzheimer's disease.
The motivation for this study is that previous exercise interventions have improved cognitive function in older adults with and without cognitive impairments, but these studies were largely conducted without substantial African American representation.
Due to genetic and environmental differences between African American and other populations, it is unclear whether positive findings from previous interventions will translate to African American individuals.
Investigators hypothesize that a community-based physical activity intervention will a) be tailored to African American adults, b) increase daily amounts of physical activity, and c) improve cognitive function in sedentary older African American adults.
Studieöversikt
Status
Avslutad
Betingelser
Intervention / Behandling
Detaljerad beskrivning
Investigators will randomize 56 older African American adults into 1) a physical activity intervention specifically tailored to older African American or 2) a successful aging group. The 12-week physical activity intervention will consist of group based exercise sessions at a community facility and the successful aging groups will occur at Pennington Biomedical. Cognitive functioning and blood markers of circulating neurotrophic factors will be assessed to determine the brain effects of physical activity in this understudied population.
Specific Aim 1: To tailor a physical activity promotion intervention to community-dwelling African American elderly adults. Investigators will use focus groups to gather information needed to tailor a physical activity program to elderly African Americans.
Specific Aim 2: To determine if a physical activity promotion intervention in African American adults is effective in modifying physical activity and biological markers.
Specific Aim 3: To determine if a physical activity promotion intervention in African American adults benefits cognition and brain health. Change over the course of the intervention will be assessed in key AD related cognitive domains (memory, executive function, and processing speed).
Collecting this data sets the stage for the definitive study of exercise benefits on measures of amyloid, tau, inflammation, brain metabolism, and other AD-relevant pathways in elderly African Americans, which could in turn increase understanding of neurobiological mechanisms and optimal physical activity recommendations for elderly African Americans.
Studietyp
Interventionell
Inskrivning (Faktisk)
56
Fas
- Inte tillämpbar
Kontakter och platser
Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.
Studieorter
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Louisiana
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Baton Rouge, Louisiana, Förenta staterna, 70808
- Pennington Biomedical Research Center
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Deltagandekriterier
Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.
Urvalskriterier
Åldrar som är berättigade till studier
65 år till 85 år (Äldre vuxen)
Tar emot friska volontärer
Ja
Kön som är behöriga för studier
Allt
Beskrivning
Inclusion Criteria:
- 65 - 85 years of age
- African American
- sedentary or insufficiently active
- not cognitively impaired
- physically capable of exercise
- willing to accept randomization
- willing to attend group sessions
- willing to live in the study area for the next 6 months
- willing to allow researchers to use data for research purposes after study participation is completed
- free of conditions that would make regular exercise unsafe as deemed by the medical investigator
Exclusion Criteria:
- unable or unwilling to give informed consent or accept randomization in either study group
- are cognitively impaired (MMSE score of ≤ 26)
- are unable to complete physical activity requirements (SPPB ≤ 3, complete 2 minute walk without sitting or resting against a surface)
- are too active (steps per day > 50th percentile for age and gender)
- have uncontrolled hypertension (systolic blood pressure > 200 mmHg and/or diastolic blood pressure > 110 mmHg).
- gave had a hip fracture, hip or knee replacement, or spinal surgery in the past 6 months
- have had a myocardial infarction, major heart surgery (i.e., valve replacement or bypass surgery), stroke, deep vein thrombosis or pulmonary embolus in the past 6 months
- are undergoing physical therapy or cardiopulmonary rehabilitation
- are currently enrolled in another randomized trial involving lifestyle or pharmaceutical interventions
- have another member of the household that is a participant in PAACE
- have plans to relocate out of the study area within the next 6 months
- have uncontrolled diabetes that in the judgment of the MI may interfere with study participation
- have other medical, psychiatric, or behavioral factors that in the judgment of the Principal or Medical Investigator may interfere with study participation or the ability to follow the intervention protocol
Studieplan
Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Förebyggande
- Tilldelning: Randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Enda
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
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Experimentell: Physical Activity
The intervention will be a 12-week community-based physical activity promotion program
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Aerobic, strength training, balance, flexibility
|
|
Aktiv komparator: Successful Aging
Those randomized to the successful aging group will receive health information pertinent to African Americans over the 12 weeks
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Healthy aging education
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Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Change in steps.
Tidsram: 7-day period
|
Steps will be measured by the abtigraph WGT3X+ accelerometer.
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7-day period
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Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Change in dementia screening.
Tidsram: Week 0 and Week 12
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The Mini-Mental State Examination (MMSE) is a 30-item measure of cognitive function.
Scores range from 0-30, higher scores represent better global cognitive functioning.
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Week 0 and Week 12
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Change in cognition.
Tidsram: Week 0 and Week 12
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The Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) is a brief, individually administered battery to measure cognitive decline or improvement.
Four subtests of the full battery of 12 subtests used to assess immediate memory (List Learning and Story Memory), as well as language capacities (i.e., Picture Naming and Semantic Fluency).
T-scores are derived, higher scores represent better functioning.
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Week 0 and Week 12
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Change in quality of life.
Tidsram: Week 0 and Week 12
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The Health Related Quality of Life questionnaire consists of 27 questions.
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Week 0 and Week 12
|
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Change in health care utilization.
Tidsram: Week 0 and Week 12
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The Health Care Utilization questionnaire consists of 12 questions.
Participants report utilization of various health care avenues.
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Week 0 and Week 12
|
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Change in depressive symptoms.
Tidsram: Week 0 and Week 12
|
The Geriatric Depression Scale (GDS) measures depressive symptoms specifically in an elderly population.
Total scores range from 0 (no depressive symptoms) to 15 (indicative of depression).
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Week 0 and Week 12
|
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Change in resilience.
Tidsram: Week 0 and Week 12
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The 25-item Connor-Davidson Resilience Scale (CD-RISC 25) collects information on resilience, which is the ability to thrive despite adversity.
The total score ranges from 0 (low resilience) to 100 (higher resilience)
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Week 0 and Week 12
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Andra resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Tailored physical activity program for elderly African American adults
Tidsram: 1.5 hour focus groups prior to RCT. Recruitment, retention and protocol compliance throughout the intervention
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Use focus groups to gather information needed to tailor a physical activity program
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1.5 hour focus groups prior to RCT. Recruitment, retention and protocol compliance throughout the intervention
|
Samarbetspartners och utredare
Det är här du hittar personer och organisationer som är involverade i denna studie.
Samarbetspartners
Publikationer och användbara länkar
Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.
Allmänna publikationer
- Gwizdala KL, Brouillete R, Beyl R, Johnson W, Hebert C, Carter L, Harris M, Newton RL Jr, Carmichael OT. Exercise Effects on Cognition in Older African Americans: A Pilot Randomized Trial. Front Aging Neurosci. 2022 Jul 22;14:921978. doi: 10.3389/fnagi.2022.921978. eCollection 2022.
- Newton RL Jr, Beyl R, Hebert C, Harris M, Carter L, Gahan W, Carmichael O. A Physical Activity Intervention in Older African Americans: The PAACE Pilot Randomized Controlled Trial. Med Sci Sports Exerc. 2022 Oct 1;54(10):1625-1634. doi: 10.1249/MSS.0000000000002956. Epub 2022 May 7.
Studieavstämningsdatum
Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.
Studera stora datum
Studiestart (Faktisk)
19 februari 2018
Primärt slutförande (Faktisk)
30 juni 2019
Avslutad studie (Faktisk)
30 juni 2019
Studieregistreringsdatum
Först inskickad
15 mars 2018
Först inskickad som uppfyllde QC-kriterierna
15 mars 2018
Första postat (Faktisk)
22 mars 2018
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
25 juni 2020
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
23 juni 2020
Senast verifierad
1 juni 2020
Mer information
Termer relaterade till denna studie
Nyckelord
Andra studie-ID-nummer
- 2017-022
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