Skip to content

Study · Measured the body's own peptide · 2008

2 results

Response of growth and myogenic factors in human skeletal muscle to strength training.

Liu Y, Heinichen M, Wirth K, Schmidtbleicher D, Steinacker JM

British journal of sports medicine28 Feb 2008Cited by 21 (Europe PMC)

PMID18308879 (opens in a new tab)DOI10.1136/bjsm.2007.045518 (opens in a new tab)PepBankPUB-18308879
Publisher pagePubMedAsk about this study
Jump to 2 results

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 study2

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

Natural levels measured2

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 24 volunteers, 6 weeks of strength training with maximum contraction increased muscle MGF gene expression by 1160%.

    In plain wordsIn volunteers, strength training with maximum contraction raised the body's own MGF gene activity in muscle.

    Peptide
    MGF / PEG-MGF
    Outcome
    IncreaseMGF gene expression after strength training, group A
    Study

    n: not reported in source

    Comparator
    Before training
    Outcome group
    Exercise and physical function · Musculoskeletal

    Measurements

    MGF gene expression change
    1160%
    group A

    Source sentences

    Summary
    The MGF gene expression increased significantly in both groups (by 1160% and 59%, respectively), and IGF-1 increased only in group A (by 335%).
    2 context sentences
    Summary · context
    24 volunteers were divided into two groups and performed a 6-week strength training (group A trained with maximum contraction and group B had training combined with maximum contractions, ballistic movement and stretching-shortening cycles).
    Summary · context
    For estimating gene expression of insulin-like growth factor (IGF-1), mechano growth factor (MGF), MyoD and myogenin, real-time RT-PCR was performed.

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

  2. 02HumanEndogenous levelNon-randomized trialMechanism

    In 24 volunteers, 6 weeks of combined strength training with ballistic movement and stretching-shortening cycles increased muscle MGF gene expression by 59%.

    In plain wordsIn volunteers, combined strength training raised the body's own MGF gene activity in muscle.

    Peptide
    MGF / PEG-MGF
    Outcome
    IncreaseMGF gene expression after strength training, group B
    Study

    n: not reported in source

    Comparator
    Before training
    Outcome group
    Exercise and physical function · Musculoskeletal

    Measurements

    MGF gene expression change
    59%
    group B

    Source sentences

    Summary
    The MGF gene expression increased significantly in both groups (by 1160% and 59%, respectively), and IGF-1 increased only in group A (by 335%).
    2 context sentences
    Summary · context
    24 volunteers were divided into two groups and performed a 6-week strength training (group A trained with maximum contraction and group B had training combined with maximum contractions, ballistic movement and stretching-shortening cycles).
    Summary · context
    For estimating gene expression of insulin-like growth factor (IGF-1), mechano growth factor (MGF), MyoD and myogenin, real-time RT-PCR was performed.

    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.

Publication types

PepBank is a research reference. Talk to a doctor before you use any peptide.