QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Purchase Article View Shopping Cart Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Vukovich, M. D. Articles by Bohlken, R. M. Search for Related Content PubMed PubMed Citation Articles by Vukovich, M. D. Articles by Bohlken, R. M.

---

Research Communication

Body Composition in 70-Year-Old Adults Responds to Dietary ß-Hydroxy-ß-Methylbutyrate Similarly to That of Young Adults¹

South Dakota State University, Brookings, SD 57007 and ^* Wichita State University, Wichita, KS 67260

²To whom correspondence should be addressed. E-mail: matthew_vukovich{at}sdstate.edu.

Studies in young adults have demonstrated that ß-hydroxy-ß-methylbutyrate (HMB) can increase gains in strength and fat-free mass during a progressive resistance-training program. The purpose of this study was to determine whether HMB would similarly benefit 70-y-old adults undergoing a 5 d/wk exercise program. Thirty-one men (n = 15) and women (n = 16) (70 ± 1 y) were randomly assigned in a double-blind study to receive either capsules containing a placebo or Ca-HMB (3 g/d) for the 8-wk study. Skin fold estimations of body composition as well as computerized tomography (CT) and dual X-ray absorptiometry (DXA) scans were measured before the study and immediately after the 8-wk training program. HMB supplementation tended to increase fat-free mass gain (HMB, 0.8 ± 0.4 kg; placebo, -0.2 ± 0.3 kg; treatment x time, P = 0.08). Furthermore, HMB supplementation increased the percentage of body fat loss (skin fold: HMB, -0.66 ± 0.23%; placebo, -0.03 ± 0.21%; P = 0.05) compared with the placebo group. CT scans also indicated a greater decrease in the percentage of body fat with HMB supplementation (P < 0.05). In conclusion, changes in body composition can be accomplished in 70-y-old adults participating in a strength training program, as previously demonstrated in young adults, when HMB is supplemented daily.

KEY WORDS: • older adults • humans • exercise training • body composition • ß-hydroxy-ß-methylbutyrate (HMB)

This article has been cited by other articles:

				M. F. McCarty and K. I. Block Toward a core nutraceutical program for cancer management. Integr Cancer Ther, June 1, 2006; 5(2): 150 - 171. [Abstract] [PDF]

				S. L. Nissen and R. L. Sharp Effect of dietary supplements on lean mass and strength gains with resistance exercise: a meta-analysis J Appl Physiol, February 1, 2003; 94(2): 651 - 659. [Abstract] [Full Text] [PDF]