Cited by 205Growth Hormone and Insulin-like Growth FactorsNutrition and Health in AgingHormonal and reproductive studies

Association of IGF-I levels with muscle strength and mobility in older women

Open access
Cappola, Anne R., Bandeen-Roche, Karen, Wand, Gary S., Volpato, Stefano, Fried, Linda P.·2001·The Journal of Clinical Endocrinology & Metabolism

Abstract

The functional consequences of the age-associated decline in IGF-I are unknown. We hypothesized that low IGF-I levels in older women would be associated with poor muscle strength and mobility. We assessed this question in a population representative of the full spectrum of health in the community, obtaining serum IGF-I levels from women aged 70-79 yr, enrolled in the Women's Health and Aging Study I or II. Cross-sectional analyses were performed using 617 women with IGF-I levels drawn within 90 d of measurement of outcomes. After adjustment for age, there was an association between IGF-I and knee extensor strength (P = 0.004), but not anthropometry or other strength measures. We found a positive relationship between IGF-I levels and walking speed for IGF-I levels below 50 microg/liter (P < 0.001), but no relationship above this threshold. A decline in IGF-I level was associated with self-reported difficulty in mobility tasks. All findings were attenuated after multivariate adjustment. In summary, in a study population including frail and healthy older women, low IGF-I levels were associated with poor knee extensor muscle strength, slow walking speed, and self-reported difficulty with mobility tasks. These findings suggest a role for IGF-I in disability as well as a potential target population for interventions to raise IGF-I levels.

Integrity signals

Registry

Crossref · 10.1210/jcem.86.9.7868

Cites

27 of 27 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The weak observational association between low circulating IGF-1 and some measures of weak muscle strength and limited mobility among older women may reflect general age-associated debility rather than specific hormonal effects.

    “The weak observational association between low circulating IGF-1 and some, but not other, measures of weak muscle strength and limited mobility among older women may reflect general age-associated debility rather than any specific hormonal effects (173).”

Cites

Flagged first, then by citations

1 of the 28 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Cappola, A. R., Bandeen-Roche, K., Wand, G. S., Volpato, S., & Fried, L. P.
Affiliations
  • Johns Hopkins University (US)
  • Department of Biostatistics, Johns Hopkins School of Hygiene and Public Health (K.B.-R.), Baltimore, Maryland 21205
  • National Institutes of Health (US)
Corresponding author
Cappola, Anne R.
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2001-09-01
Volume
86
Issue
9
Pages
4139-4146
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2082560483
Cited by
205
References
28
Citations by year
2026: 1 · 2025: 4 · 2024: 5 · 2023: 3 · 2022: 9 · 2021: 4 · 2020: 11 · 2019: 8 · 2018: 9 · 2017: 9 · 2016: 4 · 2015: 8 · 2014: 8 · 2013: 14 · 2012: 13
FWCI
5.28
Type
journal article
Language
en
Open access
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Research Information System University of Ferrara (University of Ferrara) (submittedVersion)
  • Columbia Academic Commons (Columbia University)
Funders
  • Johns Hopkins University
  • Quest Diagnostics
  • National Institute on Aging (N01AG12112, R01 AG11703, R01AG011703)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal and reproductive studies
Keywords
insulin-like growth factor I, muscle strength, quadriceps strength, mobility (physical function), walking speed, older women, functional disability, aging, Women's Health and Aging Study
MeSH terms
Activities of Daily Living, Aged, Aging, Body Composition, Body Weight, Cross-Sectional Studies, Female, Humans, Insulin-Like Growth Factor I, Psychomotor Performance, Muscle, Skeletal, Hand Strength, Phlebotomy, Human Growth Hormone

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review