Mindful Awareness Program for the Prevention of Dementia: A Randomized Controlled Trial (MAPRCT)
The objective of this study is to determine whether regular Mindful Awareness Program (MAP) may reverse cognitive impairment and/or prevent further cognitive decline among older adults. 60 elderly with mild cognitive impairment (MCI) were randomized to participate in either the MAP or the Health Education Program (HEP). Sessions will be conducted weekly for 12 weeks, and monthly for 6 months. Participants would be assessed at 3 time-points: at the start, at 3-months and at 9-months.
It was hypothesized that as compared to HEP participants, MAP participants will (1) have improved functional connectivity, (2) have a decreased risk in cognitive decline and (3) report higher psychological well-being.
研究概览
详细说明
Participants Study participants are community-dwelling elderly.
Assessments Demographic data will be collected at the start. Psychological tests for depression and anxiety and neuropsychological tests of cognitive functioning will be done at the start, at 3-months and at 9-months, the end of the study. A urine sample will be collected at the start and at the end of the study; blood, fecal and saliva samples will be collected at all three time points. Participants will also undergo a brain neuro-imaging scan at the start of the study and at the 3-months interval.
Intervention Sessions This is an intervention study with a control group design. The strength of this design is its experimental nature with randomization. The control group is the health education program participants.
In the Mindful Awareness Program, all 30 participants will be seen in a group format once a week for 40 minutes for 12 weeks, followed by once a month for 40 minutes for 6 months. The intervention is modelled on similar groups teaching mindfulness meditation to the elderly. The sessions will be led by an experienced instructor who has conducted pilot studies on the use of mindful awareness practice techniques with the elderly.
Participants shall be required to practice these techniques at home daily and will be asked to keep a log of their practice.
For the Health Education Program, all 30 participants will be seen in a group format once a week for 40 minutes for 12 weeks, followed by once a month for 40 minutes for 6 months. Each weekly session will cover a healthy living topic related to maintaining and improving cognitive function. The monthly sessions will review the topics covered with a discussion of how participants have implemented the imparted knowledge to their daily lives. The sessions will be led by an experienced instructor who has conducted similar teaching sessions to the elderly.
Participants will be provided with hand-outs at each session, and there will be discussions to encourage them to practice what is being taught in their daily lives.
研究类型
注册 (实际的)
阶段
- 不适用
联系人和位置
学习地点
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Singapore、新加坡、648886
- Training and Research Academy
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
an elderly person between the age of 60 and 85 living in the community and fulfill the operational criteria/definition of MCI:
- At least one age-education adjusted neuropsychological test Z score < -1.5
- Do not meet DSM-IV criteria for dementia syndrome
- Memory / Cognitive complaint, preferably corroborated by a reliable informant
- Intact Activities of Daily Living.
- function independently
- do not suffer from dementia,
- able to travel on their own to the data collection site and participate in the MAP or HEP
Exclusion Criteria:
- Those who do not meet the above inclusion criteria (ie. Do not have a MCI diagnosis),
- Those with Dementia or Normal Ageing
- Have a neurological condition (e.g., epilepsy, Parkinson's Disease),
- Have a major psychiatric condition (e.g., major depressive disorder)
- Suffer from a terminal illness (e.g., cancer).
- Have significant visual or hearing impairment, or
- Marked upper and lower limb motor difficulties, which may affect their ability to participate in the study.
- Are in another interventional study at the same time
学习计划
研究是如何设计的？
设计细节
- 主要用途：预防
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：单身的
武器和干预
参与者组/臂 |
干预/治疗 |
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实验性的：Mindful Awareness Program
18 sessions of mindful awareness program teaching the elderly mindful awareness practice techniques
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For Mindful Awareness Program, 40-minutes weekly sessions for 12 weeks, followed by 40-minutes monthly for 6 months.
The mindful awareness practice techniques to be taught to the elderly include: (1) mindfulness of the senses practice; (2) the body scan practice; (3) walking meditation practice; (4) 'movement nature meant' practice; and (5) visuo-motor limb tasks
其他名称：
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有源比较器：Health Education Program
18 sessions of health education program focusing on healthy living topics
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For the Health Education Program, weekly sessions of 40 minutes for 12 weeks, followed by monthly sessions of 40 minutes for 6 months. Week 1: Diabetes Mellitus Week 2: Hypertension Week 3: Home Safety Week 4: Medications Week 5: Diet Week 6: Depression Week 7: Dementia Week 8: Anxiety Week 9: Sleep Week 10: Exercise Week 11: Coping with bereavement Week 12: Social support
其他名称：
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
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Change from baseline Mini-Mental State Examination (MMSE) at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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Mini-Mental State Examination (MMSE) is a brief 30-point questionnaire administered by health care professionals to screen for cognitive impairment.
The score ranges from 0 to 30; the higher the score, the less impaired is the participant's cognitive function.
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baseline, 3-months, 9-months
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Change from baseline Clinical Dementia Rating (CDR ) at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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Clinical Dementia Rating (CDR ) is a 5-point scale used to characterize six domains of cognitive and functional performance applicable to Alzheimer disease and related dementias: Memory, Orientation, Judgment & Problem Solving, Community Affairs, Home & Hobbies, and Personal Care.
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baseline, 3-months, 9-months
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Change from baseline Rey Auditory Verbal Learning Test (RAVLT) at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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Rey Auditory Verbal Learning Test (RAVLT) evaluates declarative verbal learning and memory.
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baseline, 3-months, 9-months
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Change from baseline Digit Span Task at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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Digit Span Task, which consists of a Digit Span Forward (DSF) and a Digit Span Backward (DSB) task is used to assess attention and verbal working memory.
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baseline, 3-months, 9-months
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Change from baseline Colour Trails Tests (CTT) at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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Colour Trails Tests (CTT) 1 and 2 assesses sustained attention and sequencing.
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baseline, 3-months, 9-months
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Change from baseline Block Design at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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Block Design is a subtest that is administered as part of several of the Wechsler Intelligence tests, and it primarily measures visual-spatial and organizational processing abilities, as well as non-verbal problem-solving skills.
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baseline, 3-months, 9-months
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Change from baseline Semantic Verbal Fluency (Animals) at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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Semantic Verbal Fluency (Animals) taps lexical knowledge and semantic memory organization.
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baseline, 3-months, 9-months
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Change from baseline fMRI scan at 3 months
大体时间：baseline, 3-months
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Functional Magnetic Resonance Imaging (fMRI) will be employed to examine changes in functional connectivity.
Images will be acquired on a 3T Siemens scanner using a standard Siemens whole head coil.
All subjects will undergo the task-free fMRI scan after being instructed only to remain awake with their eyes closed.
White Matter Diffiusion Tractography Imaging (DTI) will be utilized to identify anatomical connections between functionally correlated regions .
The MRI Brain Scan is non-invasive and does not involve the use of Contrast; duration of each scan is approximately one hour.
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baseline, 3-months
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Change from baseline Biomarkers: blood sample at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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5 ml of blood will be collected using plasma tubes with indomethacin (15uM final conc) and BHT (20ul of 2mM) will be added prior to freezing (-80 Degree Celsius) to preserve the sample and prevent artifacts (at baseline, 3 months, 9 months). 3 ml of blood will be collected using tubes with no coagulant (at baseline, 3 months and 9 months). 5 ml of blood will be collected using Tempus Blood RNA tubes and will be stored in a refrigerator at approximately 4 Degree Celsius (at baseline and 9 months). Blood sample would be analysed for cytokine levels; chromosomal studies and terminal telomere restriction fragment length. |
baseline, 3-months, 9-months
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Change from baseline Biomarkers: urine sample at 9 months
大体时间：baseline, 9-months
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15 ml sample of urine will be collected and frozen as quickly as possible.
Urine sample would be analysed for oxidative biomarkers.
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baseline, 9-months
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Change from baseline Biomarker - fecal sample at 3 months and 9 months
大体时间：baseline,3 months, 9 months
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A fecal sample will also be collected in a tube with RNALater and microbeads.
These can be kept at 40C till processing.
Fecal sample would be analysed for bacteria.
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baseline,3 months, 9 months
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Change from baseline Biomarker - saliva sample at 3 months and 9 months
大体时间：baseline,3 months, 9 months
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Saliva will be collected in a test-tube by having participants continuously spit into a 50ml centrifuge tube for 5 minutes.
Saliva sample would be analysed for salivary cortisol analysis, DNA extraction and sequencing for stress biomarkers (cytokines).
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baseline,3 months, 9 months
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
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Change from baseline Basic Health Screen at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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the Blood pressure, Pulse rate, Height and Weight will be measured.
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baseline, 3-months, 9-months
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Change from baseline Activities of daily Living (ADL) at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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Activities of daily Living (ADL) is a questionnaire to screen for functional assessment.
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baseline, 3-months, 9-months
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Change from baseline Instrumental Activities of Daily Living (IADL) at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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Instrumental Activities of Daily Living (IADL) is a questionnaire to screen for functional assessment.
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baseline, 3-months, 9-months
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Change from baseline Geriatric Depression Scale (GDS) at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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Psychological well-being will be assessed using the Geriatric Depression Scale.
Subjects with high scores will not be enrolled into the study and will be informed of the scores and advised to see a doctor at a polyclinic or their family physician with a referral letter prepared for this purpose.
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baseline, 3-months, 9-months
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Change from baseline Geriatric Anxiety Inventory (GAI) at 3 months and 9 months
大体时间：baseline, 3-months, 9-months
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Psychological well-being will be assessed using the Geriatric Anxiety Inventory (GAI).
Subjects with high scores will not be enrolled into the study and will be informed of the scores and advised to see a doctor at a polyclinic or their family physician with a referral letter prepared for this purpose.
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baseline, 3-months, 9-months
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其他结果措施
结果测量 |
大体时间 |
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Demographic questionnaire
大体时间：Baseline
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Baseline
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合作者和调查者
调查人员
- 首席研究员：Rathi Mahendran, Ph.D、National University, Singapore
出版物和有用的链接
一般刊物
- Morris JC. The Clinical Dementia Rating (CDR): current version and scoring rules. Neurology. 1993 Nov;43(11):2412-4. doi: 10.1212/wnl.43.11.2412-a. No abstract available.
- Roberts RO, Geda YE, Knopman DS, Boeve BF, Christianson TJ, Pankratz VS, Kullo IJ, Tangalos EG, Ivnik RJ, Petersen RC. Association of C-reactive protein with mild cognitive impairment. Alzheimers Dement. 2009 Sep;5(5):398-405. doi: 10.1016/j.jalz.2009.01.025.
- Moverare-Skrtic S, Johansson P, Mattsson N, Hansson O, Wallin A, Johansson JO, Zetterberg H, Blennow K, Svensson J. Leukocyte telomere length (LTL) is reduced in stable mild cognitive impairment but low LTL is not associated with conversion to Alzheimer's disease: a pilot study. Exp Gerontol. 2012 Feb;47(2):179-82. doi: 10.1016/j.exger.2011.12.005. Epub 2011 Dec 22.
- Huang L, Jia J, Liu R. Decreased serum levels of the angiogenic factors VEGF and TGF-beta1 in Alzheimer's disease and amnestic mild cognitive impairment. Neurosci Lett. 2013 Aug 29;550:60-3. doi: 10.1016/j.neulet.2013.06.031. Epub 2013 Jul 1.
- Gard T, Holzel BK, Lazar SW. The potential effects of meditation on age-related cognitive decline: a systematic review. Ann N Y Acad Sci. 2014 Jan;1307:89-103. doi: 10.1111/nyas.12348.
- Rapgay L, Bystrisky A. Classical mindfulness: an introduction to its theory and practice for clinical application. Ann N Y Acad Sci. 2009 Aug;1172:148-62. doi: 10.1111/j.1749-6632.2009.04405.x.
- Mcbee, L. (2008) Mindfulness-based elder care. New York: Springer.
- Wells RE, Yeh GY, Kerr CE, Wolkin J, Davis RB, Tan Y, Spaeth R, Wall RB, Walsh J, Kaptchuk TJ, Press D, Phillips RS, Kong J. Meditation's impact on default mode network and hippocampus in mild cognitive impairment: a pilot study. Neurosci Lett. 2013 Nov 27;556:15-9. doi: 10.1016/j.neulet.2013.10.001. Epub 2013 Oct 10.
- Davidson RJ, Kabat-Zinn J, Schumacher J, Rosenkranz M, Muller D, Santorelli SF, Urbanowski F, Harrington A, Bonus K, Sheridan JF. Alterations in brain and immune function produced by mindfulness meditation. Psychosom Med. 2003 Jul-Aug;65(4):564-70. doi: 10.1097/01.psy.0000077505.67574.e3.
- Feng L, Chong MS, Lim WS, Ng TP. The Modified Mini-Mental State Examination test: normative data for Singapore Chinese older adults and its performance in detecting early cognitive impairment. Singapore Med J. 2012 Jul;53(7):458-62.
- Schmidt, M. (1996). Rey auditory verbal learning test: A handbook. Los Angeles: Western Psychological Services.
- Conway AR, Kane MJ, Bunting MF, Hambrick DZ, Wilhelm O, Engle RW. Working memory span tasks: A methodological review and user's guide. Psychon Bull Rev. 2005 Oct;12(5):769-86. doi: 10.3758/bf03196772.
- Lee TM, Chan CC. Are trail making and color trails tests of equivalent constructs? J Clin Exp Neuropsychol. 2000 Aug;22(4):529-34. doi: 10.1076/1380-3395(200008)22:4;1-0;FT529.
- Ardila, A., Ostrosky-Solís, F, & Bernal,B. (2006). Cognitive testing toward the future: The example of Semantic Verbal Fluency (ANIMALS), International Journal of Psychology, 41(5), 324-332
- Dusek JA, Otu HH, Wohlhueter AL, Bhasin M, Zerbini LF, Joseph MG, Benson H, Libermann TA. Genomic counter-stress changes induced by the relaxation response. PLoS One. 2008 Jul 2;3(7):e2576. doi: 10.1371/journal.pone.0002576. Erratum In: PLoS One. 2017 Feb 21;12 (2):e0172845.
研究记录日期
研究主要日期
学习开始
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (估计)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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