Evidence map›Paper›PMID 34686189›Full record

Observational studyRespiratory research2021

Diaphragmatic excursion is correlated with the improvement in exercise tolerance after pulmonary rehabilitation in patients with chronic obstructive pulmonary disease.

Masashi Shiraishi, Yuji Higashimoto, Ryuji Sugiya, Hiroki Mizusawa, Yu Takeda, Shuhei Fujita, Osamu Nishiyama, Shintarou Kudo, Tamotsu Kimura, Yasutaka Chiba and 3 more

Abstract readObservational Study
In one paragraph

Observational study in Respiratory research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
–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

17 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Respiratory Muscle Strength and Mortality in Patients with COPD: A Systematic Review and Meta-Analysis.International journal of chronic obstructive pulmonary disease · 2025
    Pooled it
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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

13 authors.

Masashi ShiraishiDepartment of Rehabilitation Medicine, Kindai University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka, 5898511, Japan. masashi-shiraishi@med.kindai.ac.jp.ORCID http://orcid.org/0000-0001-5410-1331
Yuji HigashimotoDepartment of Rehabilitation Medicine, Kindai University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka, 5898511, Japan.
Ryuji SugiyaDepartment of Rehabilitation Medicine, Kindai University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka, 5898511, Japan.
Hiroki MizusawaDepartment of Rehabilitation Medicine, Kindai University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka, 5898511, Japan.
Yu TakedaDepartment of Rehabilitation Medicine, Kindai University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka, 5898511, Japan.
Shuhei FujitaDepartment of Rehabilitation Medicine, Kindai University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka, 5898511, Japan.
Osamu NishiyamaDepartment of Respiratory Medicine and Allergology, Kindai University School of Medicine, Osaka, Japan.
Shintarou KudoInclusive Medical Science Research Institute, Morinomiya University of Medical Sciences, Osaka, Japan.
Tamotsu KimuraDepartment of Rehabilitation Medicine, Kindai University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka, 5898511, Japan.
Yasutaka ChibaDivision of Biostatistics, Clinical Research Center, Kindai University School of Medicine, Osaka, Japan.
Kanji FukudaDepartment of Rehabilitation Medicine, Kindai University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka, 5898511, Japan.
Yuji TohdaDepartment of Respiratory Medicine and Allergology, Kindai University School of Medicine, Osaka, Japan.
Hisako MatsumotoDepartment of Respiratory Medicine and Allergology, Kindai University School of Medicine, Osaka, Japan.

Funding

science and technology innovative research team in higher educational institutions of hunan province 21K11(325)
6 · The paper itself

Abstract

backgroundIn patients with chronic obstructive pulmonary disease (COPD), the maximum level of diaphragm excursion (DE

methodsThis was a prospective cohort study. Of the 62 patients with stable COPD who participated in the outpatient PR programme from April 2018 to February 2021, 50 completed the programme. Six-minute walk distance (6MWD) was performed to evaluate exercise tolerance, and ultrasonography was performed to measure DE

resultsBaseline levels of forced expiratory volume in 1 s, 6MWD, maximum inspiratory pressure, DE

conclusionDE

Indexed as

Exercise TherapyExercise ToleranceAgedAged, 80 and overClinical Decision-MakingDiaphragmFemaleHumansLungMalePredictive Value of TestsProspective StudiesPulmonary Disease, Chronic ObstructiveRecovery of FunctionResistance TrainingTime FactorsCOPDDiaphragmatic excursionPulmonary rehabilitationSix-minute walk distance (6MWD)

Identifiers

PMID34686189
PMCPMC8532083

What OpenQuestion holds

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Registered trials

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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.