| 効果 | 減少 |
| 試験方法 | 二重盲検法 |
| 試験期間 | 1-7 Days |
| 被験者数 | 12 |
| 性別 | 男性 |
| 年齢 | 18-29 |
| 体型 | トレーニング中, 平均 |
この研究の注釈：
Supplementation of betaine at 1.25g twice daily for one week appears to, when exercising in a fasted state, increase IGF-1 (7.8%) and reduce cortisol concentrations (6.1%) and nonsignificantly increase growth hormone (6.1%) relative to placebo.
Supplementation of betaine at 1.25g twice daily for one week appears to, when exercising in a fasted state, increase IGF-1 (7.8%) and reduce cortisol concentrations (6.1%) and nonsignificantly increase growth hormone (6.1%) relative to placebo.
This study noted that the decrease in Akt/P70S6K signalling (anabolic signalling) during exercise was attenuated with betaine, but AMPK was not affected.
研究の資金源に関する問題点：
Partially funded by Dupont Nutrition and Health