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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT00131131
Other study ID # DK46890 (completed 2006)
Secondary ID R01DK046890
Status Completed
Phase N/A
First received August 16, 2005
Last updated October 5, 2017
Start date May 2003
Est. completion date December 2009

Study information

Verified date October 2017
Source National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The specific objective of this project is to study the impact exercise has on gallstone formation during pregnancy when women are at increased risk due to biochemical and physiological alterations.


Description:

The female gender and multiparity are the two most important positive correlates of cholesterol gallstone disease. Pregnancy represents the period of time when the 'lithogenic' pressure on a woman is the highest. Biliary sludge is a precursor stage of gallstones. The investigators studied the etiological factors associated with the development of sludge and stones during pregnancy, and their early results suggest that it is inversely related to physical activity. They also found that being overweight, a known risk factor for gallstone disease, is associated with high blood leptin levels. In addition, the risk associated with high leptin levels is partially mitigated by physical activity.

In order to disentangle the effects of physical activity, leptin and gestational diabetes on gallbladder disease risk, and to understand the mechanisms behind the observed associations, the investigators propose to conduct a randomized controlled trial. This interventional study is a logical extension of their previous observational investigation. Their specific aims are:

- To evaluate whether an endurance exercise program is associated with lower risk of gallbladder disease in overweight pregnant women;

- To evaluate whether an endurance exercise intervention program changes leptin levels in pregnancy among overweight women;

- To examine the associations between gallbladder disease incidence and potential causal variables in this prospective trial. These variables include leptin levels, HDL, insulin levels, BMI (as it varies within women classified as overweight), as well as changes in these variables.

Gallstone disease affects 15-20% of adult Americans. Cholecystectomy is one of the most commonly performed operations. The morbidity, and the burden of cost, incurred by gallstones are staggering. Yet there is a dearth of understanding in the epidemiology and the cause of this disease. The results of this investigation should generate new, important and useful insights into the pathogenesis, and provide a rational strategy for the prevention, of this common and costly disease.


Recruitment information / eligibility

Status Completed
Enrollment 1196
Est. completion date December 2009
Est. primary completion date November 2008
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Female
Age group 18 Years to 50 Years
Eligibility Inclusion Criteria:

- Pregnant

- Over 18 years of age

- Eligible for care at Madigan Army Medical Center

Exclusion Criteria:

- Prior gallbladder surgery

- Non-English speaking

- Medical reason not to exercise during pregnancy

- Moving from area within 3 months

Study Design


Related Conditions & MeSH terms


Intervention

Behavioral:
Exercise


Locations

Country Name City State
United States Madigan Army Medical Center Tacoma Washington

Sponsors (2)

Lead Sponsor Collaborator
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) University of Washington

Country where clinical trial is conducted

United States, 

References & Publications (1)

Ko CW, Napolitano PG, Lee SP, Schulte SD, Ciol MA, Beresford SA. Physical activity, maternal metabolic measures, and the incidence of gallbladder sludge or stones during pregnancy: a randomized trial. Am J Perinatol. 2014 Jan;31(1):39-48. doi: 10.1055/s-0 — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Development of gall bladder sludge or gallstones Gallbladder sludge was defined as the presence of low amplitude echoes within the gallbladder without postacoustic shadowing, which could layer with positioning of the patient. Gallstones were defined as high amplitude echoes with postacoustic shadowing. 18 and 36 weeks gestation
Secondary Insulin Insulin, mU/mL 18 and 36 weeks gestation
Secondary Leptin Leptin pg/L 18 and 36 weeks gestation
Secondary Adiponectin Adiponectin pg/mL 18 and 36 weeks gestation
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