Effects of Yoga on Bone Metabolism in Premenopausal Women

• Sponsor: University of Oklahoma (Other)
• Overall Status: Completed
• CT.gov ID: NCT02163668
• Collaborator: (none)
• Enrollment: 47
• Location: 1
• Arms: 2
• Duration (Months): 31
• Patients Per Site Per Month: 1.5

Study Details

Study Description

Brief Summary

This study examined the effects of 8 months of Yoga training on bone density and bone turnover markers in premenopausal women, ages 35-50 years. The style of Yoga used was power Yoga that involved postures with a jumping component. The investigators hypothesized that the Yoga intervention would result in beneficial improvements in bone turnover markers, by increasing the bone formation marker and decreasing the bone resorption marker.

Condition or Disease	Intervention/Treatment	Phase
Bone Health; Osteoporosis	Other: Yoga Group	N/A

Study Design

• Study Type: Interventional
• Actual Enrollment: 47 participants
• Allocation: Randomized
• Intervention Model: Parallel Assignment
• Masking: None (Open Label)
• Primary Purpose: Prevention
• Official Title: Effects of an 8-month Yoga Intervention on Bone Metabolism in Healthy Middle-aged Premenopausal Women: A Randomized Controlled Study
• Study Start Date: Sep 1, 2009
• Actual Primary Completion Date: Jun 1, 2010
• Actual Study Completion Date: Apr 1, 2012

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Yoga group 8 months of progressive Yoga training	Other: Yoga Group; 8 months of Yoga training
No Intervention: Control group No training, just pre and post testing

Outcome Measures

Primary Outcome Measures

1. Change in bone mineral density from baseline to 8 months [pre and post 8 months training]

2. change in bone turnover markers [pre and post 8 month intervention]

3. change in tibia bone characteristics [pre and post 8 month intervention]

   changes in volumetric bone mineral density and bone strength of the non-dominant tibia assessed by peripheral Quantitative Computed Tomography (pQCT)

4. Changes in muscular strength [pre and post 9 month intervention]

   Isotonic 1 repetition maximum (1RM) for 4 lower body and 2 upper body resistance exercises

5. Change in arterial compliance [pre and post 8 month interventon]

   Arterial compliance of the large and small arteries was assessed using Pulse Contour analysis.

6. Change in Insulin-like Growth Factor-1 (IGF-I) and Insulin-like Growth Factor BP3 (IGFBP3) [pre and post 8 month intervention]

Secondary Outcome Measures

1. Daily Calcium intake [pre and post 8 month intervention]

   Calcium intake is a potential confounding variable. Participants were encouraged to increase their calcium intakes if found to be low before the intervention began.

2. Menstrual History [pre and post 8 month intervention]

   This information was used to monitor menstrual characteristics to ensure they were still premenopausal at the post test.

3. Dietary intake [At baseline at the same time as other outcomes, about 2 weeks before the beginning of the yoga training]

   Three day dietary logs were recorded by participants before the exercise intervention. They were analyzed for caloric intake and nutrient composition using the Diet Analysis Plus 9 software.

4. Change in physical activity levels [pre and post 8 month intervention]

   Physical activity levels estimated by the bone-specific physical activity (PA) questionnaire to monitor their PA outside of the intervention

5. Change in body composition [pre and post 8 month intervention]

Eligibility Criteria

Criteria

• Ages Eligible for Study: 35 Years to 50 Years
• Sexes Eligible for Study: Female
• Accepts Healthy Volunteers: Yes

Inclusion Criteria:

• participants had not been engaged in resistance training or in Yoga exercise for at least 12 months prior to the study

• did not have chronic back or joint problems or cardiovascular disease

• not taking antihypertensive drugs or any medication that affects bone density

• not taking hormonal contraception

• they self-reported having regular menstrual cycles.

Exclusion Criteria:

• body weight more than 300 pounds

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	Department of Health and Exercise Science, University of Oklahoma	Norman	Oklahoma	United States	73019

Sponsors and Collaborators

• University of Oklahoma

Investigators

• Principal Investigator: Debra A Bemben, PhD, Department of Health and Exercise Science, University of Oklahoma

Study Documents (Full-Text)

None provided.

More Information

Publications

• Chan K, Qin L, Lau M, Woo J, Au S, Choy W, Lee K, Lee S. A randomized, prospective study of the effects of Tai Chi Chun exercise on bone mineral density in postmenopausal women. Arch Phys Med Rehabil. 2004 May;85(5):717-22.
• Phoosuwan M, Kritpet T, Yuktanandana P. The effects of weight bearing yoga training on the bone resorption markers of the postmenopausal women. J Med Assoc Thai. 2009 Sep;92 Suppl5:S102-8.

• Responsible Party: Debra Bemben, Professor, University of Oklahoma
• ClinicalTrials.gov Identifier: NCT02163668
• Other Study ID Numbers: OUYogaStudy
• First Posted: Jun 16, 2014
• Last Update Posted: Jun 16, 2014
• Last Verified: Jun 1, 2014

• Keywords provided by Debra Bemben, Professor, University of Oklahoma: Yoga; Bone turnover markers; Bone strength; Bone mineral density
• Additional relevant MeSH terms: Osteoporosis

Study Results

No Results Posted as of Jun 16, 2014