Jacob Wilson studie: HMB vs HMB+ATP vs ATP

[BobaFett]

http://www.jissn.com/content/10/S1/P17

Results

Supplementation with ATP and HMB-FA increased strength gains over the 12-week study (ATP*time, p < 0.05 and HMB*time, p <0.05, respectively). Strength gains following training were greatest in the HMB-FA+ATP group, followed by the HMB-FA, ATP, and placebo groups respectively. No significant interaction (HMB-FA*ATP*time, p > 0.05) was observed indicating that the HMB and ATP supplementation effects were additive. During the overreaching cycle, strength declined in the placebo (-4.5%) group, but this decline was blunted in both the ATP (-2%) and HMB-FA (-.5 %) groups. Surprisingly, the HMB-FA+ATP group continued to gain strength (+1.2%). Over the 12-weeks of training vertical jump power increased to the greatest extent in the HMB+ATP group, followed by the HMB-FA, ATP, and placebo groups, respectively. The percentage increases in vertical jump power were synergistic with HMB-FA and ATP supplemented in combination (HMB-FA*ATP*time, p < 0.004). Vertical jump power during the overreaching cycle decreased more in the placebo group, 5.0±0.4%, compared with the smaller decreases in vertical jump power for the HMB-FA, ATP, and HMB-FA+ATP supplemented groups, 1.4±0.4, 2.2±0.4, and 2.2±0.5%, respectively, over weeks 9 and 10 (t-test, p < 0.05). Lean body mass was increased in an additive manner by 2.1±0.5, 7.4±0.4, 4.0±0.4, and 8.5±0.8 kg in placebo, HMB-FA, ATP, and HMB-FA+ATP-supplemented participants, respectively (t-test, p < 0.05), and fat percentage only decreased in the HMB supplemented groups.

Conclusions

Our results suggest that HMB-FA, ATP, and the combination can enhance LBM, and strength, in an additive manner, with power increasing synergistically when HMB-FA and ATP are combined. These supplements also appear to blunt the typically overreaching response seen to high volume, low recovery training cycles.