Evidence map›Paper›PMID 41606758›Full record

Observational studyBMC pulmonary medicine2026

Association of muscle mass and quality with functional decline in older patients with pneumonia: single-center retrospective observational study in Japan.

Yuichi Murakawa, Akira Tamaki, Ryota Matsuzawa, Shinjiro Miyazaki, Koji Fujishima, Tatsuma Hori, Miki Naide, Kenichiro Sakai, Tomoya Ishii

Abstract readObservational Study
In one paragraph

Observational study in BMC pulmonary medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
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

3 citing papers in PubMed.

  1. Possible Sex Differences in the Morphological and Functional Muscle Quality Reflected by Phase Angle: Implications for Muscle Quality Assessment.Physiotherapy research international : the journal for researchers and clinicians in physical therapy · 2026
    Article
  2. Article
  3. Review
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

9 authors.

Yuichi MurakawaGraduate School of Rehabilitation Science, Hyogo Medical University, 1-3-6 Minatojima, Chuo-ku, Kobe, Hyogo, 650-8530, Japan.
Akira TamakiGraduate School of Rehabilitation Science, Hyogo Medical University, 1-3-6 Minatojima, Chuo-ku, Kobe, Hyogo, 650-8530, Japan. a-tamaki@hyo-med.ac.jp.
Ryota MatsuzawaGraduate School of Rehabilitation Science, Hyogo Medical University, 1-3-6 Minatojima, Chuo-ku, Kobe, Hyogo, 650-8530, Japan.
Shinjiro MiyazakiRehabilitation Center, KKR Takamatsu Hospital, 4-18 Tenjinmae, Takamatsu City, Kagawa, 760-0018, Japan.
Koji FujishimaDepartment of Rehabilitation Technology, Sanuki Municipal Hospital, 387-1 Ishida Higashi Kou, Sangawa-cho, Sanuki City, Kagawa, 769-2393, Japan.
Tatsuma HoriDepartment of Rehabilitation Technology, Sanuki Municipal Hospital, 387-1 Ishida Higashi Kou, Sangawa-cho, Sanuki City, Kagawa, 769-2393, Japan.
Miki NaideDepartment of Rehabilitation Technology, Sanuki Municipal Hospital, 387-1 Ishida Higashi Kou, Sangawa-cho, Sanuki City, Kagawa, 769-2393, Japan.
Kenichiro SakaiDepartment of Respiratory Medicine, Sanuki Municipal Hospital, 387-1 Ishida Higashi Kou, Sangawa-cho, Sanuki City, Kagawa, 769-2393, Japan.
Tomoya IshiiDepartment of Respiratory Medicine, Sanuki Municipal Hospital, 387-1 Ishida Higashi Kou, Sangawa-cho, Sanuki City, Kagawa, 769-2393, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMuscle mass has recently been reported to be associated with survival and functional prognosis in older patients with pneumonia. However, it is unclear whether muscle quality and muscle mass affect the performance of activities of daily living (ADL) in older patients with pneumonia. Further, the impact of the overlap between muscle mass and muscle quality decline has not been established. The present study aimed to determine the effect of muscle mass and muscle quality, measured using chest computed tomography (CT), on ADL performance of older patients with pneumonia.

methodsNine hundred and twenty-two patients, diagnosed with pneumonia and admitted to Sanuki Municipal Hospital for pulmonary rehabilitation, were included. The cross-sectional area of the erector spinae muscle at the lower level of the 12th thoracic vertebra (ESM

resultsThe data of 373 participants were included in the analysis. Multiple logistic regression analysis using motor FIM effectiveness score as the dependent variable revealed that low muscle mass was still a significant independent variable after adjustment for confounding factors [odds ratio (OR), 0.43; 95% confidence interval (CI), 0.20-0.90]. The combination of low muscle mass and quality (OR, 0.14; 95% CI, 0.06-0.32) was a stronger influencing factor than low muscle mass alone.

conclusionsThe overlap of muscle mass and muscle quality loss in older patients with pneumonia markedly affects their ADL performance.

Indexed as

Activities of Daily LivingMuscle, SkeletalPneumoniaSarcopeniaAgedAged, 80 and overFemaleHumansJapanLogistic ModelsMaleRetrospective StudiesTomography, X-Ray ComputedErector spinae muscleMuscle massMuscle qualityOlder adultsOverlapping reductionsRehabilitation effectiveness

Identifiers

PMID41606758
PMCPMC12924255

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.