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Study · Measured the body's own peptide · 2006

2 results

Skeletal muscle IGF-I isoform expression in healthy women after isometric exercise.

Greig CA, Hameed M, Young A, Goldspink G, Noble B

Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society1 Oct 2006Cited by 26 (Europe PMC)

PMID17107821 (opens in a new tab)DOI10.1016/j.ghir.2006.09.005 (opens in a new tab)PepBankPUB-17107821
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 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 levelObservational studyMechanism

    In healthy women, muscle MGF mRNA was significantly higher 2.5 hours after a single bout of maximal isometric exercise than at baseline.

    In plain wordsIn healthy women, the body's own muscle MGF messenger RNA was higher 2.5 hours after one bout of isometric exercise.

    Peptide
    MGF / PEG-MGF
    Outcome
    IncreaseMuscle MGF mRNA 2.5 h after isometric exercise
    Study

    n = 6

    Comparator
    Baseline
    Outcome group
    Exercise and physical function · Musculoskeletal

    Measurements

    p value
    0.026
    MGF mRNA at 2.5 h versus baseline

    Source sentences

    Summary
    mRNA for MGF was significantly elevated by 2.5h (p=0.026).
    3 context sentences
    Summary · context
    Six healthy women (median age 38 years, range 25-43 years).
    Summary · context
    Single bout of maximal isometric knee extension undertaken as 20 sets of 6 contractions.
    Summary · context
    Muscle samples from the lateral mass of the quadriceps were obtained by needle biopsy at baseline, 2.5h and 50h after exercise.

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

  2. 02HumanEndogenous levelObservational studyMechanism

    In healthy women, muscle MGF mRNA did not differ significantly between 2.5 hours and 50 hours after isometric exercise.

    In plain wordsIn healthy women, the body's own muscle MGF messenger RNA showed no clear difference between 2.5 and 50 hours after exercise.

    Peptide
    MGF / PEG-MGF
    Outcome
    No significant changeMuscle MGF mRNA between 2.5 h and 50 h after exercise
    Study

    n = 6

    Comparator
    2.5 h after exercise
    Outcome group
    Exercise and physical function · Musculoskeletal

    Source sentences

    Summary
    There were no statistically significant differences between measurements at 2.5h and 50h for either transcript.
    3 context sentences
    Summary · context
    Six healthy women (median age 38 years, range 25-43 years).
    Summary · context
    Single bout of maximal isometric knee extension undertaken as 20 sets of 6 contractions.
    Summary · context
    Muscle samples from the lateral mass of the quadriceps were obtained by needle biopsy at baseline, 2.5h and 50h after exercise.

    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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