Yoga for the Treatment of Metabolic Syndrome

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00605436
Recruitment Status : Completed
First Posted : January 31, 2008
Last Update Posted : January 31, 2008
Cliff Lede Foundation
Information provided by:
University of California, San Francisco

Brief Summary:

We tested the following hypotheses:

  1. That a standardized yoga therapy will improve insulin sensitivity (primary outcome), and other features of the metabolic syndrome such as hypertension and dyslipidemia (secondary outcomes), we will perform a 2-hour oral glucose tolerance test, fasting blood tests, and a physical examination before and after randomization of subjects to a 10-week yoga therapy intervention or wait-list control group.
  2. That a yoga therapy is feasible in overweight and underactive individuals with the metabolic syndrome, that adherence to a yoga intervention is acceptable, and that yoga therapy is associated with improved quality of life, we will assess the adherence to twice-weekly yoga group sessions (for weeks1-5) and weekly yoga group sessions (for weeks 6-10), frequency of home yoga therapy practice, and self-reported quality of life before and after the intervention in both treatment groups.
  3. To elucidate a potential mechanism for the effect of yoga on changes in insulin resistance by evaluating markers of inflammation from adipose tissue (adipocytokines). We hypothesize that these biochemical parameters will show modest improvement with yoga therapy and that changes in these parameters will be associated with improvements in insulin sensitivity.

Condition or disease Intervention/treatment Phase
Metabolic Syndrome Behavioral: Restorative yoga therapy Phase 1

Detailed Description:

Study Interventions: There will be a 12-week intervention period.

  1. Yoga Therapy Group: Those randomized to yoga therapy will receive twice-weekly group yoga sessions at the Osher Center for the entire intervention period. The yoga postures and breathing techniques will be taught by a qualified and certified yoga instructor using a standardized protocol that was determined by a Yoga Expert Panel. Each group yoga session will take approximately 90 minutes. Participants will also be required to practice yoga at home at least 3 times per week, and be given yoga materials (mat, blocks, straps), an instruction manual, and a video for their use at home. They will be asked to keep a calendar log of the dates/times that they practiced yoga at home. This group will also receive a 20-30 minute session with a counselor to discuss Standard Health Education at the beginning of the 12-week intervention. This session will be similar to the control group intervention.
  2. Standard Health Education Group: Participants assigned to the standard health education group will receive an individual 20-30 minute session with a trained research associate within a week of their baseline visit. In this session, participants will be informed of the importance of a healthy lifestyle, given written information of the Food Guide Pyramid12 and told to follow the equivalent of the National Cholesterol Education Program Step I diet13. They will be counseled to reduce weight and increase physical activity. This is similar to the intervention given to the "Standard Lifestyle Group" in the Diabetes Prevention Program4.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 26 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Restorative Yoga for Therapy of the Metabolic Syndrome: A Pilot Trial
Study Start Date : October 2006
Actual Primary Completion Date : April 2007
Actual Study Completion Date : June 2007

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: A
Restorative yoga therapy group: one orientation workshop for 3 hours, then twice-weekly group yoga therapy classes for first 5 weeks followed by once-weekly group yoga classes for another 5 weeks. The group will also be asked to practice their yoga postures at home for 30 minutes three times per week.
Behavioral: Restorative yoga therapy
3-hour workshop at study initiation. Then twice-weekly group yoga classes for 5 weeks, then once-weekly group yoga classes for 5 weeks. Home yoga practice for 90 minutes/week throughout the 10 week trial.

No Intervention: B
The control group is a wait-list control group with no active intervention.

Primary Outcome Measures :
  1. Fasting plasma glucose level [ Time Frame: 10 weeks ]

Secondary Outcome Measures :
  1. Feasability of yoga postures [ Time Frame: 10 weeks ]
  2. Adherence to protocol [ Time Frame: 10 weeks ]
  3. Blood pressure [ Time Frame: 10 weeks ]
  4. Insulin sensitivity [ Time Frame: 10 weeks ]
  5. Weight [ Time Frame: 10 weeks ]
  6. Waist circumference [ Time Frame: 10 weeks ]
  7. Heart rate variability [ Time Frame: 10 weeks ]

Information from the National Library of Medicine

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Ages Eligible for Study:   30 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  1. to be between the ages of 30 and 65 years,
  2. fulfill at least three criteria for the metabolic syndrome per the NCEP guidelines:

    • waist circumference (>88 cm for women; >102 cm for men),
    • HDL-cholesterol (<50 mg/dl for women; <40 mg/dl for men),
    • triglycerides >=150 mg/dL
    • fasting glucose >=100 mg/dL, and/or
    • high blood pressure (>=130/>=85 or use of antihypertensive medication), and
  3. report an underactive or sedentary lifestyle defined as accumulating less than 30 minutes of moderate intensity endurance exercise 5 days per week.

Exclusion Criteria:

  1. Pregnancy or lactation
  2. Coronary heart disease (defined as a myocardial infarction or cardiac intervention with percutaneous transluminal catheterization or coronary artery bypass graft surgery) event or hospitalization in the past 6 months
  3. Chronic illnesses: cancer, kidney disease, cirrhosis, rheumatogic diseases, or chronic infections
  4. Current use of these medications: oral diabetes medications, insulin, steroid hormones, oral contraceptives, hormone replacement therapy, niacin, fibrates.
  5. Regular participation (>1/week) yoga for past 3 months or concurrent use of yoga
  6. Current major psychiatric illness, cognitive impairment, or substance abuse
  7. Plans to move out of the study region within 6 months
  8. Life-expectancy of < 6 months
  9. Concurrent enrollment in any other studies, experimental therapies, or blinded treatments

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00605436

United States, California
University of California, San Francisco
San Francisco, California, United States, 94115
Sponsors and Collaborators
University of California, San Francisco
Cliff Lede Foundation
Principal Investigator: Alka M. Kanaya, MD University of California, San Francisco
Principal Investigator: Deborah Grady, MD, MPH University of California, San Francisco

Responsible Party: Alka M. Kanaya, MD Identifier: NCT00605436     History of Changes
Other Study ID Numbers: H9377-29543-02
First Posted: January 31, 2008    Key Record Dates
Last Update Posted: January 31, 2008
Last Verified: January 2008

Keywords provided by University of California, San Francisco:
metabolic syndrome

Additional relevant MeSH terms:
Metabolic Syndrome X
Pathologic Processes
Insulin Resistance
Glucose Metabolism Disorders
Metabolic Diseases