Effects of a Single Evening Session of Vinyasa Yoga to Gentle Yoga on Sleep and Cardiovascular Health in Adults
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 42
- 试验地点
- 1
- 主要终点
- Change in nocturnal root mean square of successive difference between normal heartbeats (RMSSD) heart rate variability (HRV)
研究概览
简要总结
The goal of this clinical trial is to learn if yoga works to improve sleep and heart health in adults with and without insomnia disorder. The main questions it aims to answer are:
- Does the style of yoga impact participants heart health overnight?
- Does the style of yoga improve participants sleep following a single session? Researchers will compare adults with insomnia disorder to adults with healthy sleep .
Participants will:
- Complete a moderate-intensity yoga practice, a low-intensity intensity yoga practice, and a quiet rest period while watching a nature documentary in the evening on three separate evenings
- Participants will have their sleep and heart health measured using a watch and heart rate monitor overnight following each visit
详细描述
This study investigates how two different styles of yoga, vinyasa yoga and gentle yoga, impact sleep and heart health in adults with and without insomnia. Insomnia, a common sleep disorder, increases the risk of heart disease, the leading cause of death worldwide. Recently, the American Heart Association identified poor sleep as a key factor in maintaining heart health, yet there is limited research on therapies that can simultaneously improve both sleep and cardiovascular function. By examining the immediate effects of a single evening session of yoga, this study aims to determine if yoga could serve as a practical, complementary approach to managing sleep and heart health.
Using a three-arm randomized crossover design, the study includes 42 participants, aged 18-40, who are either good sleepers or have diagnosed insomnia. Each participant will complete three sessions: one of vinyasa yoga, one of gentle yoga, and a non-active control session, with each session separated by a 72-hour washout period to avoid carryover effects. The yoga sessions will be standardized to 60 minutes and take place in the evening, approximately 4-6 hours before bedtime, under the supervision of a trained research staff.
The study has three main goals. First, examine whether different yoga styles influence heart function during sleep by measuring heart rate variability (HRV), a marker of nervous system balance that reflects the body's ability to regulate stress and relaxation. The investigators hypothesize that both yoga styles will improve HRV in people with insomnia more than in healthy sleepers. Second, to determine if vinyasa or gentle yoga improves sleep quality-measured by sleep efficiency (the percentage of time in bed spent asleep), total sleep time, and self-reported sleep quality-in adults with insomnia compared to those without sleep problems. Lastly, measure the impact of yoga on blood vessel function using flow-mediated dilation (FMD), a test that measures how well blood vessels expand in response to increased blood flow, with the expectation that vinyasa yoga's moderate intensity will provide greater immediate benefits compared to gentle yoga.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Supportive Care
- 盲法
- Single (Investigator)
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Adults 18-40 years
- •Insufficiently inactive define by the L-CAT (responses below public health physical activity guidelines)
- •Physical activity is not contraindicated (i.e., no affirmative responses on the Physical Activity Readiness Questionnaire for Everyone (PAR-Q+)
- •Adults with diagnosed insomnia disorder and score ≥ 10 on the Insomnia Severity Index
- •Good sleeps a score < 10 (no history of sleep disorder)
- •Basic understanding of yoga poses
- •Access to a smart device (such as a smartphone or tablet)
排除标准
- •Regular yoga practice (> 60 minutes per week)
- •Any diagnosed medical condition requiring medical clearance determined 'Yes' response on questions pertaining to a present medical condition(s) via PAR-Q+. This includes, but is not limited to, uncontrolled cardiovascular, metabolic, respiratory, musculoskeletal, neurological, or mental health conditions; recent stroke or concussion; active cancer treatment; and any combination of medical conditions that pose a health risk without physician supervision. All "yes" responses on the PAR-Q+ will be evaluated, and individuals requiring clearance will not be eligible to participate.
- •Physical limitations and/or mobility restrictions (such as bone, joint, or soft tissue such as muscle, ligament, or tendon that could be made worse by becoming more physically active) via PAR-Q+
- •Untreated major psychiatric disorders (e.g. major depression, bipolar disorder, schizophrenia)
- •Elevated risk for sleep apnea (i.e., STOP-Bang score ≥ 5)
- •Any other sleep disorders other than insomnia (e.g., sleep apnea, restless legs syndrome, circadian rhythm disorder, etc.)
- •Current treatment for insomnia (e.g., hypnotic medications, cognitive behavioral therapy for insomnia, etc.)
- •Current medications that affect heart or blood pressure (i.e., anti-depressants, beta-blockers, etc.)
- •Current or planned pregnancy within the next 3 months
- •Overnight shift work defined as regularly working anytime between 00:00 and 6:00am
研究组 & 干预措施
vinyasa yoga
60 minute moderate-intensity yoga session
干预措施: Vinyasa yoga (Behavioral)
gentle yoga
60 minute low-intensity yoga session
干预措施: Gentle yoga (Behavioral)
Control Condition
60-minute non-active control condition
干预措施: Non-active control (Other)
结局指标
主要结局
Change in nocturnal root mean square of successive difference between normal heartbeats (RMSSD) heart rate variability (HRV)
时间窗: Overnight immediately after each experimental sessions (vinyasa yoga, gentle yoga, non-active control) for a total of 3 separate nights.
Nocturnal root mean square of successive difference between normal heartbeats will be assessed immediately after each experimental session for 1 night; a higher value indicates better cardiovascular health
次要结局
- Change in sleep efficiency(Overnight immediately after each experimental sessions (vinyasa yoga, gentle yoga, non-active control) for a total of 3 separate nights.)
- Change in total sleep time(Overnight immediately after each experimental sessions (vinyasa yoga, gentle yoga, non-active control) for a total of 3 separate nights.)
- Change in wake after sleep onset(Overnight immediately after each experimental sessions (vinyasa yoga, gentle yoga, non-active control) for a total of 3 separate nights.)
- Change in sleep quality(The following morning after each experimental sessions (vinyasa yoga, gentle yoga, non-active control) for a total of 3 separate mornings.)
- Change in nocturnal heart rate(Overnight immediately after each experimental sessions (vinyasa yoga, gentle yoga, non-active control) for a total of 3 separate nights.)
- Change in systolic blood pressure(pre- , immediate-post, and 60-minute post following each experimental session (vinyasa yoga, gentle yoga, non-active control))
- Change in diastolic blood pressure(pre- , immediate-post, and 60-minute post following each experimental session (vinyasa yoga, gentle yoga, non-active control))
- Change in heart rate(pre- , immediate-post, and 60-minute post following each experimental session (vinyasa yoga, gentle yoga, non-active control))
- Change in root mean square of successive difference between normal heartbeats(pre- , immediate-post, and 60-minute post following each experimental session (vinyasa yoga, gentle yoga, non-active control))
- Change in flow-mediated dilation(pre- , 60-minute post, and delayed-posted (morning after) following each experimental session (vinyasa yoga, gentle yoga, non-active control))
- Change in acute anxiety symptoms(Immediately pre- and post-experimental session (vinyasa yoga, gentle yoga, non-active control))
- Change in mood(Immediately pre- and post-experimental session (vinyasa yoga, gentle yoga, non-active control))
研究者
Caitlin Cheruka
Clinical Assistant Professor
University of Central Florida