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Study · Measured the body's own peptide · 2010

4 results

Coordinated increase in skeletal muscle fiber area and expression of IGF-I with resistance exercise in elderly post-operative patients.

Suetta C, Clemmensen C, Andersen JL, Magnusson SP, Schjerling P, Kjaer M

Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society23 Dec 2009Cited by 17 (Europe PMC)

PMID20031461 (opens in a new tab)DOI10.1016/j.ghir.2009.11.005 (opens in a new tab)PepBankPUB-20031461
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 study4

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

Natural levels measured4

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 levelRandomized controlled trialMechanism

    In elderly post-operative patients, resting muscle MGF levels did not differ between the three groups at baseline.

    In plain wordsIn older patients after surgery, the body's own MGF levels in muscle were similar across the three groups at the start.

    Peptide
    MGF / PEG-MGF
    Outcome
    No significant changeBaseline resting MGF expression across groups
    Study

    n: not reported in source

    Comparator
    Between the three groups
    Outcome group
    Muscle injury and repair · Musculoskeletal

    Source sentences

    Summary
    At baseline there was no difference between the three groups in muscle fiber area or resting levels of IGF-IEa and MGF.
    1 context sentence
    Summary · context
    About 28 subjects, 14 men and 14 women (age 69, range 60-86 years) were randomized to unilateral resistance training (RT: 3/week), electrical stimulation (ES: 1h/day) or functional exercises (FE: 1h/day).

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

  2. 02HumanEndogenous levelRandomized controlled trialMechanism

    In elderly post-operative patients, resistance training increased muscle MGF expression, in contrast to electrical stimulation and functional exercises.

    In plain wordsIn older patients after surgery, resistance training raised the body's own MGF in muscle, unlike electrical stimulation or functional exercises.

    Peptide
    MGF / PEG-MGF
    Outcome
    IncreaseMGF expression after resistance training
    Study

    n: not reported in source

    Comparator
    Electrical stimulation and functional exercises
    Outcome group
    Muscle injury and repair · Musculoskeletal

    Source sentences

    Summary
    parallel to an increase in the expression of IGF-IEa and MGF, in contrast to ES and FE.
    1 context sentence
    Summary · context
    About 28 subjects, 14 men and 14 women (age 69, range 60-86 years) were randomized to unilateral resistance training (RT: 3/week), electrical stimulation (ES: 1h/day) or functional exercises (FE: 1h/day).

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

  3. 03HumanEndogenous levelRandomized controlled trialMechanism

    In elderly post-operative patients, electrical stimulation did not increase muscle MGF expression.

    In plain wordsIn older patients after surgery, electrical stimulation did not raise the body's own MGF in muscle.

    Peptide
    MGF / PEG-MGF
    Outcome
    No significant changeMGF expression after electrical stimulation
    Study

    n: not reported in source

    Comparator
    Non-operated side
    Outcome group
    Muscle injury and repair · Musculoskeletal

    Source sentences

    Summary
    parallel to an increase in the expression of IGF-IEa and MGF, in contrast to ES and FE.
    1 context sentence
    Summary · context
    About 28 subjects, 14 men and 14 women (age 69, range 60-86 years) were randomized to unilateral resistance training (RT: 3/week), electrical stimulation (ES: 1h/day) or functional exercises (FE: 1h/day).

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

  4. 04HumanEndogenous levelRandomized controlled trialMechanism

    In elderly post-operative patients, functional exercises did not increase muscle MGF expression.

    In plain wordsIn older patients after surgery, functional exercises did not raise the body's own MGF in muscle.

    Peptide
    MGF / PEG-MGF
    Outcome
    No significant changeMGF expression after functional exercises
    Study

    n: not reported in source

    Comparator
    Non-operated side
    Outcome group
    Muscle injury and repair · Musculoskeletal

    Source sentences

    Summary
    parallel to an increase in the expression of IGF-IEa and MGF, in contrast to ES and FE.
    1 context sentence
    Summary · context
    About 28 subjects, 14 men and 14 women (age 69, range 60-86 years) were randomized to unilateral resistance training (RT: 3/week), electrical stimulation (ES: 1h/day) or functional exercises (FE: 1h/day).

    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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