Evidence map›Paper›PMID 32178373›Full record

ReviewNutrients2020

Reference Values for Skeletal Muscle Mass - Current Concepts and Methodological Considerations.

Carina O Walowski, Wiebke Braun, Michael J Maisch, Björn Jensen, Sven Peine, Kristina Norman, Manfred J Müller, Anja Bosy-Westphal

Open access · goldAbstract readReview
In one paragraph

Review in Nutrients, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 105 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
105citing papers in PubMed, 4 pooled it
12.5field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

105 citing papers in PubMed, 4 syntheses or guidelines pooled it, 180 citations in OpenAlex.

  1. The Role of Fat-Free Mass in Weight-Related Complications: A Rapid Review and Meta-Analysis.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026
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  4. Effect of exercise training before and after bariatric surgery: A systematic review and meta-analysis.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2021
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  14. Future of CT body composition research: Methodological discrepancies and advances.Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition · 2026
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45 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 1 country.

Carina O WalowskiInstitute for Human Nutrition and Food Science, Christian-Albrechts-University Kiel, 24105 Kiel, Germany.
Wiebke BraunInstitute for Human Nutrition and Food Science, Christian-Albrechts-University Kiel, 24105 Kiel, Germany.
Michael J Maischseca gmbh & co. kg., Hammer Steindamm 3-25, 22089 Hamburg, Germany.
Björn Jensenseca gmbh & co. kg., Hammer Steindamm 3-25, 22089 Hamburg, Germany.ORCID 0000-0002-3753-8889
Sven PeineInstitute for Transfusion Medicine, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
Kristina NormanDepartment of Nutrition and Gerontology, German Institute of Human Nutrition, Potsdam-Rehbruecke, 14558 Berlin, Germany.
Manfred J MüllerInstitute for Human Nutrition and Food Science, Christian-Albrechts-University Kiel, 24105 Kiel, Germany.
Anja Bosy-WestphalInstitute for Human Nutrition and Food Science, Christian-Albrechts-University Kiel, 24105 Kiel, Germany.
Christian-Albrechts-Universität zu Kiel · DEHumboldt-Universität zu Berlin · DEUniversität Hamburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Assessment of a low skeletal muscle mass (SM) is important for diagnosis of ageing and disease-associated sarcopenia and is hindered by heterogeneous methods and terminologies that lead to differences in diagnostic criteria among studies and even among consensus definitions. The aim of this review was to analyze and summarize previously published cut-offs for SM applied in clinical and research settings and to facilitate comparison of results between studies. Multiple published reference values for discrepant parameters of SM were identified from 64 studies and the underlying methodological assumptions and limitations are compared including different concepts for normalization of SM for body size and fat mass (FM). Single computed tomography or magnetic resonance imaging images and appendicular lean soft tissue by dual X-ray absorptiometry (DXA) or bioelectrical impedance analysis (BIA) are taken as a valid substitute of total SM because they show a high correlation with results from whole body imaging in cross-sectional and longitudinal analyses. However, the random error of these methods limits the applicability of these substitutes in the assessment of individual cases and together with the systematic error limits the accurate detection of changes in SM. Adverse effects of obesity on muscle quality and function may lead to an underestimation of sarcopenia in obesity and may justify normalization of SM for FM. In conclusion, results for SM can only be compared with reference values using the same method, BIA- or DXA-device and an appropriate reference population. Limitations of proxies for total SM as well as normalization of SM for FM are important content-related issues that need to be considered in longitudinal studies, populations with obesity or older subjects.

Indexed as

Body Mass IndexMuscle, SkeletalObesitySarcopeniaHumansReference Valuesappendicular skeletal muscle mass indexfat-free mass indexsarcopeniasarcopenic obesityskeletal muscle areaskeletal muscle massskeletal muscle mass index

Identifiers

PMID32178373
PMCPMC7146130
OpenAlexW3012007566

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.