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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01305096
Other study ID # 2011/248-31/1
Secondary ID
Status Completed
Phase N/A
First received February 25, 2011
Last updated October 23, 2014
Start date March 2011
Est. completion date October 2014

Study information

Verified date October 2014
Source Karolinska Institutet
Contact n/a
Is FDA regulated No
Health authority Sweden: Regional Ethical Review Board
Study type Interventional

Clinical Trial Summary

The purpose of this study is to determine whether inversions (specific yoga postures in which the heart is higher than the head) and other dynamic and static yoga postures affect heart rate variability, oxygen uptake, blood pressure, blood parameters and other objective measures of health, and a variety of subjective and objective measures of health in female and male individuals in Sweden.


Description:

This randomized, controlled trial involving 44 male and females in Sweden will investigate whether yoga inversions and semi-inversions and other dynamic and static yoga postures will affect the following variables: heart rate variability, oxygen uptake, anthropometric variables, common symptoms in general practice, sleepiness, sleep quality and recovery/recuperation after sleep, blood pressure, blood lipids, blood proteins, blood sugar, salivary cortisol, hand grip strength, relaxation and recovery perceived stress, self-rated health, rating of perceived exertion, satisfaction with life, and work-family conflict.

Participants will be divided into an intervention group and a passive control group. The intervention group will participate in six to ten weeks of yoga classes. The classes will be held 1-2 times a week for approximately one hour each and will include yoga poses and breathing techniques. The control group will not participate in any intervention but will conduct their lives as usual.

The variables will be assessed at baseline; at the end of the intervention; and three, six, and twelve months after the end of the intervention.


Recruitment information / eligibility

Status Completed
Enrollment 44
Est. completion date October 2014
Est. primary completion date October 2014
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Both
Age group 20 Years to 40 Years
Eligibility Inclusion Criteria:

- Aged 20-40 years old

Exclusion Criteria:

- Aged 40 or more years

- Takes medication for high blood pressure or other strong medication

- Recently had an operation

- Diagnosed with eye disease (e.g., glaucoma)

- Diagnosed with depression or burnout syndrome

- Diagnosed with serious back or neck problems

- Participates in intense physical activity more than once a week

- Has digestive problems such as acid reflux

- Serious disorder that affects the ability to do the yoga postures

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Prevention


Related Conditions & MeSH terms


Intervention

Other:
Yoga intervention
6 weeks of yoga postures, once a week for 60 minutes in a group session with a yoga teacher.

Locations

Country Name City State
Sweden Karolinska Institute Stockholm

Sponsors (3)

Lead Sponsor Collaborator
Karolinska Institutet Stockholm County Council, Sweden, Stockholm University

Country where clinical trial is conducted

Sweden, 

Outcome

Type Measure Description Time frame Safety issue
Primary Change in heart rate variability We will measure the change in this variable over time. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Primary Change in oxygen uptake We will measure the change in this variable over time. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8 week intervention No
Secondary Change in anthropometric variables Anthropometric variables include height, weight, waist-to-hip ratio, and body mass index(BMI). We will measure the change in these variables over time. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in common symptoms in general practice We will use the Common Symptoms in General Practice Index to measure how often over the past four weeks participants have experienced the fifteen most common health-related symptoms and complaints. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in level of sleepiness and measures of recovery or recuperation after sleep The Karolinska Sleepiness Scale will be used to measure this outcome variable. This scale measures degree of wakefulness at bedtime and after waking in the morning. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in blood pressure We will measure the change in this variable over time. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects at the end of the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in hand grip strength We will measure the change in this variable over time. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in measures of relaxation and recovery We will measure the change in these variables over time. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in perceived stress The Perceived Stress Scale will be used to measure this variable. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in self-rated health We will measure the change in this variable over time. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in rating of perceived exertion We will measure the change in this variable over time. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in satisfaction with life This variable will be measured with the Satisfaction With Life Scale. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in level of work-family conflict This variable will be measured with the Work-Family Conflict Scale. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in HbA1C We will measure the change in this variable over time. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No
Secondary Change in Apolipoproteins We will measure the change in this variable over time. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and after the 8-week intervention No
Secondary Change in Adiponectin/Leptin ratio We will measure the change in this variable over time. The first measurement will be at baseline and the second at the end of the 8-week intervention (main measurement). If and only if there are effects after the 8-week intervention, we will follow up the participants at various intervals to determine how long the effects are sustained. These follow-ups will be conducted 3 months, 6 months, and 12 months after the end of the intervention. Baseline and at the end of the 8-week intervention No