Cited by 83Muscle Physiology and DisordersIntensive Care Unit Cognitive DisordersNutrition and Health in Aging

The time course of disuse muscle atrophy of the lower limb in health and disease

Open access
Hardy, Edward J. O., Inns, Thomas B., Hatt, Jacob, Doleman, Brett, Bass, Joseph J., Atherton, Philip J., Lund, Jonathan N., Phillips, Bethan E.·2022·Journal of Cachexia, Sarcopenia and Muscle

Abstract

Short, intermittent episodes of disuse muscle atrophy (DMA) may have negative impact on age related muscle loss. There is evidence of variability in rate of DMA between muscles and over the duration of immobilization. As yet, this is poorly characterized. This review aims to establish and compare the time‐course of DMA in immobilized human lower limb muscles in both healthy and critically ill individuals, exploring evidence for an acute phase of DMA and differential rates of atrophy between and muscle groups. MEDLINE, Embase, CINHAL and CENTRAL databases were searched from inception to April 2021 for any study of human lower limb immobilization reporting muscle volume, cross‐sectional area (CSA), architecture or lean leg mass over multiple post‐immobilization timepoints. Risk of bias was assessed using ROBINS‐I. Where possible meta‐analysis was performed using a DerSimonian and Laird random effects model with effect sizes reported as mean differences (MD) with 95% confidence intervals (95% CI) at various time‐points and a narrative review when meta‐analysis was not possible. Twenty‐nine studies were included, 12 in healthy volunteers (total n = 140), 18 in patients on an Intensive Therapy Unit (ITU) (total n = 516) and 3 in patients with ankle fracture (total n = 39). The majority of included studies are at moderate risk of bias. Rate of quadriceps atrophy over the first 14 days was significantly greater in the ITU patients (MD −1.01 95% CI −1.32, −0.69), than healthy cohorts (MD −0.12 95% CI −0.49, 0.24) ( P < 0.001). Rates of atrophy appeared to vary between muscle groups (greatest in triceps surae (−11.2% day 28), followed by quadriceps (−9.2% day 28), then hamstrings (−6.5% day 28), then foot dorsiflexors (−3.2% day 28)). Rates of atrophy appear to decrease over time in healthy quadriceps (−6.5% day 14 vs. −9.1% day 28) and triceps surae (−7.8% day 14 vs. −11.2% day 28), and ITU quadriceps (−13.2% day 7 vs. −28.2% day 14). There appears to be variability in the rate of DMA between muscle groups, and more rapid atrophy during the earliest period of immobilization, indicating different mechanisms being dominant at different timepoints. Rates of atrophy are greater amongst critically unwell patients. Overall evidence is limited, and existing data has wide variability in the measures reported. Further work is required to fully characterize the time course of DMA in both health and disease.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1002/jcsm.13067

Cites

71 of 71 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

2 of the 73 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. [55]Toledo D, Freitas B, Carneiro D, Santos D, Dib R, Figueiredo E, et al. Bedside ultrasound muscle layer thickness assessment of the quadriceps in critically ill patient. Crit Care 2017; 21: P33.

Cited by

Sorted by citations

Authors
Hardy, E. J. O., Inns, T. B., Hatt, J., Doleman, B., Bass, J. J., Atherton, P. J., Lund, J. N., & Phillips, B. E.
Affiliations
University of Nottingham (GB)
Corresponding author
Phillips, Bethan E.
Venue
Journal of Cachexia, Sarcopenia and Muscle
Publisher
Wiley
Published
2022-09-14
Volume
13
Issue
6
Pages
2616-2629
ISSN
  • 2190-5991 (ISSN-L)
  • 2190-6009
OpenAlex
W4295903780
Cited by
83
References
73
Citations by year
2026: 20 · 2025: 28 · 2024: 23 · 2023: 11 · 2022: 1
FWCI
1.64
Type
journal article
Language
en
Open access
Locations
  • Journal of Cachexia Sarcopenia and Muscle (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institute for Health and Care Research (ACF-2020-12-004)
  • Versus Arthritis
  • Medical Research Council
  • Biotechnology and Biological Sciences Research Council (BB/R010358/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Critical Care and Intensive Care Medicine › Intensive Care Unit Cognitive Disorders
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
Keywords
disuse atrophy, immobilization, lower limb muscles, critical illness, intensive care unit, quadriceps atrophy, triceps surae, hamstrings, muscle cross-sectional area, muscle architecture, ankle fractures, age-related muscle loss, sarcopenia, critical illness myopathy
MeSH terms
Humans, Muscular Atrophy, Muscle, Skeletal, Muscular Disorders, Atrophic, Lower Extremity, Quadriceps Muscle, Muscle Strength

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