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Conjugated Linoleic Acid Supplementation Does Not Reduce Visceral Adipose Tissue in Middle-Aged Men Engaged in a Resistance-Training Program

Authors
Journal
Journal of the International Society of Sports Nutrition
1550-2783
Publisher
Springer (Biomed Central Ltd.)
Publication Date
Volume
3
Issue
2
Identifiers
DOI: 10.1186/1550-2783-3-2-28
Keywords
  • Research Article
Disciplines
  • Medicine

Abstract

Conjugated Linoleic Acid Supplementation Does Not Reduce Visceral Adipose Tissue in Middle-Aged Men Currently Participating in a Resistance-Training Program Journal of the International Society of Sports Nutrition. 3(2): 28-36 2006. (www.sportsnutritionsociety.org) Conjugated Linoleic Acid Supplementation Does Not Reduce Visceral Adipose Tissue in Middle- Aged Men Engaged in a Resistance-Training Program Roger E. Adams, Andie Hsueh, Betty Alford, Clay King, Huanbiao Mo, Robert Wildman Address correspondence to [email protected] Recieved August 7, 2006/Accepted December 1, 2006 ABSTRACT Conjugated linoleic acid (CLA) supplementation has shown convincing effects at reducing body fat in animals; yet human study results have been somewhat inconclusive. The purpose of this study is to determine whether four weeks of CLA supplementation, the approximate length of a commercial package, can result in a positive change in visceral adipose tissue in resistance-trained middle-aged men. Thirty overweight and moderately obese, but otherwise healthy male subjects (aged 35 to 55 years) currently involved in resistance training, were randomly assigned into CLA and placebo groups in a double-blind, placebo controlled approach. The study lasted for 12 weeks and consisted of three four-week periods. During the first four weeks (run-in period) each subject received placebo (4 g safflower oil). Throughout the next four weeks (supplementation period), the placebo group continued receiving placebo, while the CLA group received 3.2 g/d of CLA. During the final four weeks (run-out period) all subjects received the placebo. Computed tomography (CT) scans were used to measure visceral adipose tissue (VAT) at weeks 4, 8 and 12. No significant reduction in VAT cross-sectional area was determined in the CLA group during the study. On the contrary, a significant reduction in cross- sectional area of VAT of 23.12 cm2 during the supplementation period was measured in the pl

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