The Impact of Mindfulness-Based Resilience Training on Stress-Related Biological, Behavioral, and Health-Related Outcomes in Law Enforcement Officers
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 115
- 试验地点
- 2
- 主要终点
- Change in diurnal cortisol slope
研究概览
简要总结
In a sample of 120 officers from Dane County law enforcement agencies, the investigators are conducting a randomized controlled trial of an 8-week mindfulness-based training program for police officers, Madison Mindfulness-Based Resilience Training (mMBRT), and investigating the impact of this training on subjective responses to stress, stress-related psychological and physical health outcomes, and biological and behavioral correlates of perceived stress. While the benefits of mindfulness-based interventions have been documented in a variety of populations, this will be the largest and most comprehensive study of its kind of law enforcement personnel. In addition to self-report measures, this study assesses an array of objective biological and behavioral outcomes both in the laboratory and in the field that may speak to mechanisms of change involved in symptom reduction.
详细描述
120 police officers will be recruited from Dane County law enforcement agencies to take part in an 8-week, group-based, mindfulness-based training program called Madison Mindfulness-Based Resilience Training (mMBRT). Officers will be randomized to an active group, which will receive mMBRT immediately after baseline assessments, and a waitlist control group, which will receive mMBRT after a post-intervention assessment and a subsequent follow-up assessment. mMBRT is similar to and inspired by MBRT, and both of these programs are law enforcement-specific interventions based on Mindfulness-Based Stress Reduction (MBSR), a commonly used mindfulness program in many healthcare settings. mMBRT is structurally similar to MBSR, with 8 weekly 2-hour classes involving guided meditation practices, gentle movement, and group-based discussion (one of these classes, toward the end of the course, is approximately 4 hours and integrates many of the practices and teachings covered throughout the training program). Participants will be provided with weekly homework assignments and audio recordings that provide guided instruction in various meditation and yoga practices.
At three separate timepoints, officers will take part in a laboratory assessment that involves the following procedures:
- administration of computerized behavioral tasks
- completion of self-report questionnaires that assess trauma history and occupational stressors, perceived stress, sleep, physical and mental health
- collection of a small amount of blood via finger prick and/or venipuncture (to assess peripheral inflammatory markers)
- collection of a small amount of hair from the scalp (to assess hair cortisol concentration)
- measurement of height and weight for the assessment of body mass index, and for use with activity trackers data
In conjunction with these laboratory assessments, data will be collected from officers in the field over the course of approximately 1 week (coinciding with a regularly scheduled work week), including the following procedures:
- officers will wear an activity monitor (e.g., Fitbit) to allow for objective monitoring of sleep quality and resting heart rate throughout the study
- officers will collect saliva samples 4 times per day over 3 days for the assessment of salivary cortisol
- officers will complete daily logs of work hours, types of events encountered during work, perceived stress related to these events, and self-reported mood and affect ratings
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- None
盲法说明
Participants cannot be made blind to study assignment due to the nature of the intervention.
Baseline (T1) measures will be collected prior to treatment assignment. Every effort will be taken to minimize knowledge of group assignment by the study team, in particular the PI and other individuals involved in data analysis; however, the small size of the study team and overlapping roles of team members may preclude masking of group assignment for all members of the study team.
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •At least 18 years of age
- •Capable of giving informed consent
- •Fluent in English
- •Currently employed sworn law enforcement officer working in the Dane County Sheriff's Office, Madison Police Department, or University of Wisconsin-Madison Police Department.
排除标准
- •Extensive prior experience in meditation practice, or previous completion of Mindfulness-Based Stress Reduction, Mindfulness-Based Resilience Training, or a substantively similar meditation training program
- •A work schedule that precludes one from committing to regular participation in the 8-week training program
- •Command staff working in a supervisory role
结局指标
主要结局
Change in diurnal cortisol slope
时间窗: Baseline, post-intervention (3 months)
Saliva samples collected on each of 3 days will be used to calculate diurnal cortisol slope, defined as the change between the peak cortisol response in the 45 minutes after awakening and cortisol levels just prior to bedtime, with a hypothesized steeper slope in the intervention vs. waitlist group at post-intervention (3 months) vs. baseline.
Change in perceived occupational stress
时间窗: Baseline, post-intervention (3 months)
Change in combined scores of perceived operational and organizational stressors from the Police Stress Questionnaire (McCreary \& Thompson, 2004) from baseline to 3 months. Each of these 2 scales has 20 items with 1-7 ratings, where higher scores indicate greater stress (1=no stress at all, 7=A lot of stress). Organizational and operational stress scales will be summed to create a single value with a range of 40-280.
次要结局
- Change in cortisol awakening response(Baseline, post-intervention (3 months))
- Change in peripheral inflammatory markers(Baseline, post-intervention (3 months))
- Change in hyperarousal symptoms(Baseline, post-intervention (3 months), follow-up (6 months))
- Change in subjective sleep quality(Baseline, post-intervention (3 months))
- Change in perceived stress(Baseline, post-intervention (3 months))