crossover
    2008

    Growth hormone isoform responses to GABA ingestion at rest and after exercise

    Powers ME, Yarrow JF, McCoy SC, Borst SE

    Published in Medicine and Science in Sports and Exercise

    Key Findings

    3 g oral GABA elevated both immunoreactive and immunofunctional GH at rest and augmented the resistance-exercise GH response versus placebo.

    Conclusions

    Oral GABA acutely increases circulating growth hormone in resistance-trained men.

    Limitations

    Only 11 subjects, acute hormonal endpoints, no evidence of downstream anabolic benefit.

    Supplements Studied

    GABA
    Amino Acid

    At rest, GABA ingestion elevated both irGH and ifGH compared with placebo.

    Outcomes Measured

    Growth Hormone Support

    At rest, GABA ingestion elevated both irGH and ifGH compared with placebo.

    Study Details

    Year:2008
    Sample Size:11
    Duration:1 weeks
    Quality Score:5/10

    Access Study

    View on DOIView on PubMedOriginal Source

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