I've read all those already, but I do appreciate it.
Study 1 is from 2001 and does not mention if individuals are trained.
Study 2 is from 2000 and doesn't give any details as to materials and methods, etc. so I can't comment further.
Study 3 is from 2000 and involved "Thirty-seven, untrained, college-aged men."
Study 4 is from 2000.
Study 5 is from 2000 and only says that HMB can be safe to supplement with and has no ill side effects and that it can decrease the risk of heart attack and stroke becuase of overal reduction of cholesterol.
I just don't see anything recent that negates any more recent study that show no positive anaerobic effect of HMB.
EDIT: Here is one, but it used untrained men.
http://www.ncbi.nlm.nih.gov.proxy.l...ez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum
Int J Sport Nutr Exerc Metab. 2005 Aug;15(4):413-24.Links
Supplementation with beta-hydroxy-beta-methylbutyrate (HMB) and alpha-ketoisocaproic acid (KIC) reduces signs and symptoms of exercise-induced muscle damage in man.van Someren KA, Edwards AJ, Howatson G.
School of Life Sciences, Kingston University, Kingston-upon-Thames, United Kingdom.
This study examined the effects of beta-hydroxyl-beta-methylbutyrate (HMB) and alpha-ketoisocaproic acid (KIC) supplementation on signs and symptoms of exercise-induced muscle damage following a single bout of eccentrically biased resistance exercise. Six non-resistance trained male subjects performed an exercise protocol designed to induce muscle damage on two separate occasions, performed on the dominant or non-dominant arm in a counter-balanced crossover design. Subjects were assigned to an HMB/KIC (3 g HMB and 0.3 g alpha-ketoisocaproic acid, daily) or placebo treatment for 14 d prior to exercise in the counter-balanced crossover design. One repetition maximum (1RM), plasma creatine kinase activity (CK), delayed onset muscle soreness (DOMS), limb girth, and range of motion (ROM) were determined pre-exercise, at 1h, 24 h, 48 h, and 72 h post-exercise. DOMS and the percentage changes in 1RM, limb girth, and ROM all changed over the 72 h period (P < 0.05). HMB//IC supplementation attenuated the CK response, the percentage decrement in 1RM, and the percentage increase in limb girth (P < 0.05). In addition, DOMS was reduced at 24 h post-exercise (P < 0.05) in the HMB/KIC treatment. In conclusion, 14 d of HMB and KIC supplementation reduced signs and symptoms of exercise-induced muscle damage in non-resistance trained males following a single bout of eccentrically biased resistance exercise.