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Study · Measured the body's own peptide · 2011

1 result

Recovery after heavy resistance exercise and skeletal muscle androgen receptor and insulin-like growth factor-I isoform expression in strength trained men.

Ahtiainen JP, Lehti M, Hulmi JJ, Kraemer WJ, Alen M, Nyman K, Selänne H, Pakarinen A, Komulainen J, Kovanen V, Mero AA, Häkkinen K

Journal of strength and conditioning research1 Mar 2011Cited by 28 (Europe PMC)

PMID21311349 (opens in a new tab)DOI10.1519/jsc.0b013e318202e449 (opens in a new tab)PepBankPUB-21311349
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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 strength-trained men, muscle MGF mRNA expression was higher 48 hours after heavy resistance exercise than before exercise (p < 0.05).

    In plain wordsIn strength-trained men, the body's own MGF in leg muscle was higher two days after heavy exercise than before it.

    Peptide
    MGF / PEG-MGF
    Outcome
    IncreaseMGF mRNA expression in vastus lateralis 48 h after heavy resistance exercise
    Study

    n = 8

    Comparator
    Pre-exercise levels
    Outcome group
    Muscle injury and repair · Musculoskeletal

    Source sentences

    Summary
    IGF-IEa (p < 0.05) and MGF (p < 0.05) mRNA expression were increased compared to pre-exercise levels.
    1 context sentence
    Summary · context
    were examined from biopsies of vastus lateralis (VL) muscle before and 48 hours after heavy resistance exercise (5 × 10 repetition maximum [RM] leg press and 4 × 10RM squats) in 8 adult strength trained men.

    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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