The Effect of Resistance Training on Cognitive Performance, Cortical Plasticity, and Fall Risk in Women Aged 65-75 Years Old: A 12-Month RCT
概览
- 阶段
- 不适用
- 干预措施
- 未指定
- 疾病 / 适应症
- Healthy
- 发起方
- University of British Columbia
- 入组人数
- 155
- 试验地点
- 2
- 主要终点
- Cognitive Performance of Executive Function
- 状态
- 已完成
- 最后更新
- 8年前
概览
简要总结
Primary Objectives:
- To ascertain whether a 12-month, twice-weekly or once-weekly resistance training (RT) program will significantly improve executive function in community-dwelling women aged 65 to 75 years old compared with a 12-month, twice-weekly stretch and relax (S & R) program (shame exercise). We will assess executive function by standard neuropsychological tests.
Secondary Objectives:
- To describe the neural mechanisms that underpin the observed changes in executive function associated with a 12-month, twice-weekly or once-weekly RT training (by using functional magnetic resonance imaging (fMRI)).
- To investigate whether RT-induced changes in executive function are independently associated with changes in physiological fall risk profile.
- To investigate the dose response of RT (resistance training) on bone health as measured by dual energy x-ray and peripheral quantitative computed tomography.
- To conduct a one-year follow-up after the formal cessation of the resistance training programs to determine the persisting effect of resistance training on cognitive performance, cortical plasticity, physiological falls risk, and bone health.
详细描述
Primary Research Question: Does resistance training (RT) significantly improve cognitive function, specifically executive function in older women with a Mini-Mental State Examination (MMSE) score equal to or greater than 24 (i.e., cognitively intact) compared with a stretch \& relax (S \& R; control) program? Secondary Research Questions: 1. Are changes in cortical activation associated with RT-induced changes in executive function? 2. Are RT-induced improvements in executive function associated with lowered physiological fall risk? 3. Is there a dose-response on bone health with RT (resistance training)? RESEARCH PLAN: Study Design: A 12-month, single-blinded, randomized controlled trial. Participants: 155 cognitively-intact (i.e., MMSE score \> 24), right-handed, sedentary community-dwelling women, aged 65 to 75 years. Measurement: Measurements will take place at baseline, six month, and trial completion. Standard neuropsychological testing and physiological fall risk assessment will occur at all three measurement sessions. A subset of the participants (20 from each experimental group) will undergo fMRI assessment at baseline and trial completion only. Exercise Classes: Participants will be randomized to a 12-month, twice-weekly or once-weekly RT program or stretch \& relax program (control). All exercises will be offered at a Vancouver YMCA with whom we have partnered previously. Sample Size Justification: The sample size of 50 per experimental group (i.e., N = 155) is based on the primary end point of this study, cognitive performance of executive function. SUMMARY: Falls are a major challenge for the senior population. To date, no intervention has significantly reduced falls among those with cognitive impairment. Our immediate primary goal is to test whether RT can improve cognitive performance of executive function; impaired executive function are associated with injurious falls. If this proposed exercise trial proves successful, the RT intervention will be trialed in the future in a larger study powered for falls.
研究者
Teresa Liu-Ambrose
Principal Investigator
University of British Columbia
入排标准
入选标准
- •Sedentary (less than twice weekly exercising) women aged 65-75 years old without conditions restricting them from exercising.
排除标准
- 未提供
结局指标
主要结局
Cognitive Performance of Executive Function
时间窗: 12 months
次要结局
- Functional MRI and physiological falls risk(12 months)