Effect of Whey Protein on Blood Pressure
|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.|
|ClinicalTrials.gov Identifier: NCT00659672|
Recruitment Status : Completed
First Posted : April 16, 2008
Last Update Posted : February 9, 2011
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|Condition or disease||Intervention/treatment||Phase|
|High Blood Pressure||Dietary Supplement: Whey Protein Dietary Supplement: Soy Protein Dietary Supplement: Control (carbohydrate)||Not Applicable|
Several lines of evidence suggest that consumption of dairy foods, and specifically whey protein, may reduce blood pressure. This proposed study is designed investigate the effect of whey protein compared to another protein source.
Since blood pressure is a recognized risk factor for cardiovascular disease, if there is clear evidence that whey protein reduces blood pressure, dietary recommendations may be made regarding whey protein intake. However, dietary recommendations to consume whey protein as a means to improve health status must be science-based. Results from this study will provide a scientific basis for dietary recommendations regarding whey protein intake.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||35 participants|
|Intervention Model:||Crossover Assignment|
|Masking:||Triple (Participant, Investigator, Outcomes Assessor)|
|Official Title:||Effect of Whey Protein on Blood Pressure|
|Study Start Date :||September 2008|
|Actual Primary Completion Date :||February 2009|
|Actual Study Completion Date :||February 2009|
- Dietary Supplement: Whey Protein
40 grams per day Whey Protein
- Dietary Supplement: Soy Protein
40 grams per day soy protein
- Dietary Supplement: Control (carbohydrate)
40 grams per day maltodextrin
- systolic and diastolic blood pressure [ Time Frame: monthly ]
- Hormones,lipoproteins, and inflammation [ Time Frame: monthly ]
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|Ages Eligible for Study:||28 Years to 70 Years (Adult, Older Adult)|
|Sexes Eligible for Study:||All|
|Accepts Healthy Volunteers:||Yes|
- BMI between 25 and 42 kg/m2
- Fasting glucose < 126 mg/dl
- Blood pressure > 120/80 and < 160/100 mm Hg [based two measurements collected on separate days]
- Use of prescription or over-the-counter medications that alter blood pressure.
- Presence of kidney disease, liver disease, gout, certain cancers, thyroid disease, gastrointestinal, other metabolic diseases, or malabsorption syndromes.
- Women who have given birth during the previous 12 months.
- Pregnant women or women who plan to become pregnant or become pregnant during the study.
- Lactating women.
- Type 2 diabetes requiring the use of oral antidiabetic agents or insulin.
- History of eating disorders or other dietary patterns which are not consistent with the dietary intervention (e.g., vegetarians, very low fat diets, high protein diets).
- Volunteers who routinely participate in "heavy" exercise or volunteers who initiate an exercise program during the study.
- Volunteers who have lost 10% of body weight within the last 12 months.
- Use of vitamin and mineral supplements or antacids containing magnesium or calcium.
- Use of prescription or over-the-counter antiobesity medications or supplements (e.g., phenylpropanalamine, ephedrine, caffeine, during and for at least 6 months prior to the start of the study) or history of a surgical intervention for obesity.
- Active cardiovascular disease (such as heart attack or procedure within the past three months or participation in a cardiac rehabilitation program within last three months, stroke or history/treatment for transient ischemic attacks in the past three months, or documented history of pulmonary embolus in past six months).
- Smokers or other tobacco users (during the 6 months prior to the start of the study).
- Known (self-reported) allergy or adverse reaction to dairy products (including lactose) or soy.
- Unable or unwilling to give informed consent or communicate with study staff.
- Self-report of alcohol or substance abuse within the past twelve months and/or current acute treatment or rehabilitation program for these problems (Long-term participation in Alcoholics Anonymous is not an exclusion.)
- Other medical, psychiatric, or behavioral factors that in the judgment of the Principal Investigator may interfere with study participation or the ability to follow the intervention protocol.
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 ClinicalTrials.gov identifier (NCT number): NCT00659672
|United States, Maryland|
|USDA Beltsville Human Nutrition Research Center|
|Beltsville, Maryland, United States, 20705|
|Principal Investigator:||David J Baer, Ph.D.||USDA-ARS, Beltsville Human Nutrition Research Center|
|Responsible Party:||David J. Baer, Ph.D, Principal Investigator, USDA-ARS|
|Other Study ID Numbers:||
|First Posted:||April 16, 2008 Key Record Dates|
|Last Update Posted:||February 9, 2011|
|Last Verified:||February 2011|
high blood pressure