CALERIE (Washington University): Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy
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|ClinicalTrials.gov Identifier: NCT00099138|
Recruitment Status : Completed
First Posted : December 9, 2004
Last Update Posted : December 11, 2009
|Condition or disease||Intervention/treatment||Phase|
|Aging||Behavioral: Caloric Restriction (CR) Behavioral: Exercise||Phase 1|
Animal studies suggest that caloric restriction (CR), or consuming fewer calories, increases life span, and also protects against some aging-related disease processes such as artherosclerosis and type II diabetes. However, it appears that simply burning more calories through physical activity does not increase life span by itself. It is not known how CR affects humans, but based on this evidence it appears that the reduced total intake and metabolism of food is the main factor, rather than increased exercise alone.
To test this, volunteers will be placed on a program of either 20% caloric restriction or 20% increase of energy expenditure by exercise, or in a control group to be instructed in healthy living. All will be evaluated on a number of potential markers of aging, on body composition, and on risk factors for artherosclerosis and diabetes.
Participation in the study will last for 12 months. The Diet group will receive individual instruction from a registered dietician. The Exercise group will be given an individualized exercise program created by a personal trainer. The Healthy Lifestyle group will be given information on how to make healthier choices; both diet and activity will be discussed. All participants will be measured every two weeks, and will keep daily food and activity logs. All will be seen by a physician and will have lab tests done before beginning the study, at 1 month, and then 3 month intervals.
|Study Type :||Interventional (Clinical Trial)|
|Enrollment :||48 participants|
|Intervention Model:||Parallel Assignment|
|Official Title:||Caloric Restriction and Aging in Humans|
|Study Start Date :||March 2002|
|Actual Primary Completion Date :||February 2006|
|Actual Study Completion Date :||February 2006|
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): NCT00099138
|United States, Missouri|
|Washington University in St. Louis, School of Medicine|
|St. Louis, Missouri, United States, 63110|
|Principal Investigator:||John O. Holloszy, MD||Washington University School of Medicine|