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Resistance Training and Diet in Patients With Chronic Renal Failure

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. Identifier: NCT00018317
Recruitment Status : Completed
First Posted : July 5, 2001
Last Update Posted : January 21, 2009
Information provided by:
VA Office of Research and Development

Brief Summary:
This study will examine the effects of long-term adherence to a low protein diet (LPD) of 0.6 g/kg-1/d-1 with and without progressive resistance exercise training in patients with impaired renal function on body composition, renal function (glomerular filtration rate), nitrogen balance, muscle strength and size, and functional capacity. The hypothesis is that adherence to a LPD will result in a reduction in skeletal muscle mass and reduced strength and functional capacity while those patients who adhere to the LPD and exercise will demonstrate a similar preservation of renal function but will have greater fat free mass, muscle mass and strength. The intervention trial will last 18 months in which patients with moderate renal failure will be randomly assigned to one of 4 interventions: standard care, standard care + exercise, LPD, and LPD with exercise. In this way the independent and combined effects of diet and exercise on the progression of renal disease and body composition will be monitored. This study will have important implications for the treatment of patients with chronic renal failure. New strategies of combining exercise with recommendations of a low protein diet may slow the progression of renal disease and improve strength and functional capacity in these at-risk patients.

Condition or disease Intervention/treatment Phase
Kidney Failure, Chronic Behavioral: low protein diet Behavioral: resistance training Behavioral: combination of diet control and exercise Not Applicable

Detailed Description:
Management of dietary protein intake of the CRF patient represents a critical balance between providing adequate protein to meet nutritional requirements, and limiting protein intake in the hope of slowing or abating the progression of CRF. A number of studies have demonstrated that reduced dietary protein intake can slow the progression of chronic renal failure. Finding effective ways to increase nitrogen retention and decrease urinary nitrogen excretion may help CRF patients maintain a more positive nitrogen balance and lessen the nitrogen load on the kidneys for a given dietary protein intake. Our laboratory has demonstrated that in older men and women, the consequence of adherence to a low protein diet is an accommodation that results in decreased muscle mass, strength,and compromised immune function. We have also demonstrated that when healthy, free living older men and women consume a weight maintenance diet providing the RDA for protein of 0.8 g/kg-1/day-1 for 15 weeks they lose skeletal muscle mass. These data clearly indicate that elderly people have an increased need for dietary protein (compared to young people). Data has also demonstrated that progressive resistance exercise improves nitrogen balance in older healthy individuals as well as in patients with mild to moderate chronic renal failure.

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Study Type : Interventional  (Clinical Trial)
Allocation: Randomized
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Resistance Training and Diet in Patients With Chronic Renal Failure
Study Start Date : October 2000
Study Completion Date : December 2005

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Kidney Failure

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   50 Years to 89 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
  • Men and women 50-89 years with chronic renal failure (defined as creatinine clearance of 25-65).
  • Volunteers must be able to fulfill the requirements associated with this protocol.
  • Volunteers may be hypertensive and/or diabetic.

Information from the National Library of Medicine

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 identifier (NCT number): NCT00018317

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United States, Arkansas
Central Arkansas Veterans Healthcare System
Little Rock, Arkansas, United States, 72205
Sponsors and Collaborators
US Department of Veterans Affairs
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OverallOfficial: Dinesh Chatoth, M.D.

Layout table for additonal information Identifier: NCT00018317    
Other Study ID Numbers: AGCG-005-99F
First Posted: July 5, 2001    Key Record Dates
Last Update Posted: January 21, 2009
Last Verified: December 2004
Keywords provided by VA Office of Research and Development:
Additional relevant MeSH terms:
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Renal Insufficiency
Kidney Failure, Chronic
Kidney Diseases
Urologic Diseases
Renal Insufficiency, Chronic