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Study · Measured the body's own peptide · 2008

1 result

Androgen receptors and testosterone in men--effects of protein ingestion, resistance exercise and fiber type.

Hulmi JJ, Ahtiainen JP, Selänne H, Volek JS, Häkkinen K, Kovanen V, Mero AA

The Journal of steroid biochemistry and molecular biology30 Mar 2008Cited by 33 (Europe PMC)

PMID18455389 (opens in a new tab)DOI10.1016/j.jsbmb.2008.03.030 (opens in a new tab)PepBankPUB-18455389
Publisher pagePubMedAsk about this study
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Summary

The text of this summary is not shown here, because the article license does not allow reuse. Read it at the source (opens in a new tab)

Text rights: Publisher copyright. Results still quote short attributed sentences.

Results from this study1

No result from this study comes from a test of the peptide.

Natural levels measured1

These results measure the body's own peptide. Nobody was given the peptide. They are not evidence about taking it. They are left out of key results, evidence counts and charts.

  1. 01HumanEndogenous levelNon-randomized trialMechanism

    In older men, whey protein ingestion did not significantly change muscle MGF mRNA expression at 1 and 48 h after resistance exercise versus placebo.

    In plain wordsIn older men, protein intake did not change the body's own MGF gene activity in muscle after exercise, compared with placebo.

    Peptide
    MGF / PEG-MGF
    Outcome
    No significant changeMuscle MGF mRNA expression after resistance exercise with protein
    Study

    n = 18

    Comparator
    Placebo
    Outcome group
    Exercise and physical function · Musculoskeletal

    Source sentences

    Summary
    However, protein ingestion did not significantly affect AR mRNA or protein expression, or MGF and IGF-IEa mRNA expression at 1 and 48 h post-RE.
    1 context sentence
    Summary · context
    Protein (15 g whey) (n=9) or placebo (n=9) was consumed before and after a RE bout (5 sets of 10 repetition maximums), and vastus lateralis muscle biopsies were taken pre, 1 and 48 h post-RE.

    This result measures the body's own MGF / PEG-MGF. Nobody was given the peptide. It is not evidence about taking it.

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

Version history

PepBank keeps every version of the data on this study. Status changes from Retraction Watch, Europe PMC and Crossref are listed with their source.

  1. Version 2Current

    13 Oct 2026, 21:44 UTC

    Study results updated

  2. Version 1

    13 Oct 2026, 16:31 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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