Cited by 373Muscle Physiology and DisordersNutrition and Health in AgingAdipose Tissue and Metabolism

Excessive adipose tissue infiltration in skeletal muscle in individuals with obesity, diabetes mellitus, and peripheral neuropathy: association with performance and function

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Hilton, Tiffany N, Tuttle, Lori J, Bohnert, Kathryn L, Mueller, Michael J, Sinacore, David R·2008·Physical Therapy

Abstract

BACKGROUND AND PURPOSE: The primary purpose of this study was to report differences in calf intermuscular adipose tissue (IMAT), muscle strength (peak torque), power, and physical function in individuals with obesity, diabetes mellitus (DM), and peripheral neuropathy (PN) compared with those without these impairments. A secondary purpose was to assess the relationship between IMAT and muscle strength, power, and physical function. SUBJECTS AND METHODS: Six participants with obesity, DM, and PN (2 women, 4 men; mean age=58 years, SD=10; mean body mass index=36.3, SD=5; mean modified Physical Performance Test [PPT] score=22, SD=3) and 6 age- and sex-matched control subjects without these impairments were assessed and compared in muscle strength, muscle power, physical functioning, and muscle and fat volume, including IMAT in the calf muscles. Muscle, adipose tissue, and IMAT volumes of each calf were quantified by noninvasive magnetic resonance imaging. Muscle strength and power of the plantar-flexor and dorsiflexor muscles were quantified using isokinetic dynamometry. The modified PPT was used to assess physical function. RESULTS: Leg muscle and fat volumes were similar between groups, although IMAT volumes were 2.2-fold higher in the subjects with obesity, DM, and PN (X=120 cm(3), SD=47) than in the control subjects (X=54 cm(3), SD=41). Muscle strength, muscle power, ratio of leg muscle power to leg muscle volume, and modified PPT scores were lower in subjects with obesity, DM, and PN compared with the control subjects. DISCUSSION AND CONCLUSION: The data indicate that excess fat infiltration in leg skeletal muscles is associated with low calf muscle strength, low calf muscle power, and impaired physical function in individuals who are obese with DM and PN.

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  1. Katzmarzyk PT, Janssen I, Ardern CI. Phys- ical inactivity, excess adiposity and prema- ture mortality. Obes Rev. 2003;4:257-290.
  2. Gregg EW, Beckles GL, Williamson DF, et al. Diabetes and physical disability among older US adults. Diabetes Care. 2000;23:1272-1277.
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Authors
Hilton, T. N., Tuttle, L. J., Bohnert, K. L., Mueller, M. J., & Sinacore, D. R.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Hilton, Tiffany N
Venue
Physical Therapy
Published
2008-11-01
Volume
88
Issue
11
Pages
1336-1344
ISSN
  • 0031-9023 (ISSN-L)
  • 1538-6724
OpenAlex
W2135827283
Cited by
373
References
51
Citations by year
2026: 20 · 2025: 22 · 2024: 28 · 2023: 30 · 2022: 32 · 2021: 29 · 2020: 27 · 2019: 18 · 2018: 28 · 2017: 14 · 2016: 25 · 2015: 19 · 2014: 17 · 2013: 18 · 2012: 14
FWCI
4.11
Type
journal article
Language
en
Open access
Locations
  • Physical Therapy (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Collections - Ithaca College Library (Ithaca College) (submittedVersion, public-domain)
Funders
Eunice Kennedy Shriver National Institute of Child Health and Human Development (T32HD007434)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
intermuscular adipose tissue, skeletal muscle fat infiltration, obesity, diabetes mellitus, peripheral neuropathy, triceps surae, muscle strength, muscle power, physical function, plantar flexor muscles, dorsiflexor muscles, isokinetic dynamometry
MeSH terms
Adipose Tissue, Body Composition, Diabetes Mellitus, Female, Humans, Male, Middle Aged, Obesity, Peripheral Nervous System Diseases, Exercise, Muscle, Skeletal, Muscle Strength

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