The Yoga and Insomnia Study
Condition: Insomnia; Insomnia, Psychophysiological; Sleep Disorder
MeSH terms: Sleep Initiation and Maintenance Disorders; Sleep Wake Disorders
Study type: Interventional

Summary: 
      The purpose of our study is to examine the effects of a 4-week vinyasa yoga program on
      sleep-related and cardiovascular outcomes in adults with insomnia symptoms. This study will
      examine the following aims:

      To examine the effects of a 4-week vinyasa yoga program compared to a non-active control
      condition on subjective and objective sleep-related outcomes in adults who report insomnia
      symptoms.

      To examine the effects of a 4-week vinyasa yoga program compared to a non-active control on
      cardiovascular health.

      To examine the effects of a single session of vinyasa yoga compared to a non-active control
      condition on sleep- and cardiovascular-related outcomes collected overnight.

      Researchers will compare the yoga group and the non-active control group to see if there are
      any improvements in sleep and cardiovascular health.
    

Detailed description: 
      This study will examine the effects of a 4-week vinyasa yoga program on sleep-related and
      cardiovascular outcomes using a randomized parallel group design. Following baseline
      assessments, participants will be randomly assigned into one of the two experimental
      conditions (i.e., vinyasa yoga, non-active control condition) based on stratification by sex
      (i.e., male, female) in a 1:1 ratio.

      All groups will complete an initial in-person experimental session during the early evening:
      those in the vinyasa yoga group will be guided through a supervised vinyasa yoga session and
      those in the non-active control group will complete a quiet rest session. Participants will
      be provided an Actiwatch and heart rate monitor to measure acute experimental effects on
      sleep and nocturnal heart rate variability.

      Following the initial supervised session, those in the vinyasa yoga intervention will be
      provided with a yoga mat and a standardized video and asked to practice 3 times per week for
      4 weeks; compliance will be monitored by an online log. The non-active control group will not
      receive any yoga intervention and will be asked to avoid starting a new exercise routine.

      Following the 4-week intervention, all participants will complete post-intervention sleep and
      cardiovascular assessments following the same procedures used at baseline.
    

Intervention name(s): Vinyasa yoga group; Non-active control group
Intervention type(s): Behavioral; Other
Intervention description(s): Participants will be instructed to perform a pre-recorded 60-minute vinyasa yoga session 3 times a week for 4 weeks.; Participants will be instructed to sit quietly for 60 minutes and watch a nature documentary during this time. The participants will be asked to maintain their current lifestyle habits and refrain from starting a new exercise and/or yoga program.
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: Single (Outcomes Assessor)
Primary purpose: Prevention
Keywords: sleep; cardiovascular; insomnia; yoga; physical activity