CORVALLIS - Researchers at Oregon State University are seeking volunteers for a study to examine the efficacy of a new nutritional supplement that claims to improve the health benefits of a diet and exercise program for overweight adults.

The study is being conducted in cooperation with the National Research Council for Health.

The manufacturer's claims about improved fat loss and greater maintenance of lean mass have not yet been scientifically verified. OSU is participating in a national study to check these claims.

Principal investigator in the study is Dan Williams, an assistant professor of exercise and sports science at OSU. Susan Fox, head of the Human Performance Lab in the College of Health and Human Performance, will be project manager.

Approximately 80 volunteers are needed for the study, which will begin in October. Participants should be 18 to 50 years of age, at least 20 percent above ideal body weight, and willing to be randomly assigned to either a group that will take an active supplement, or a group that will take an inactive placebo. Volunteers also must be willing to eat a prescribed low-calorie diet and able to take part in an exercise walking program on the OSU campus five days a week. Participants should not have thyroid disease, diabetes, or cardiovascular disease.

The participants will receive a free physical examination and body composition analysis, the nutritional supplements, and lunch and dinner entrees.

Persons interested in the study should contact the OSU Human Performance Laboratory at 541-737-2189.

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Dan Williams, 541-737-5922