Evidence map›Paper›PMID 33293881›Full record

ArticleNature and science of sleep2020

Inspiratory Muscle Training in the Severity of Obstructive Sleep Apnea, Sleep Quality and Excessive Daytime Sleepiness: A Placebo-Controlled, Randomized Trial.

José Carlos Nogueira Nóbrega-Júnior, Armèle Dornelas de Andrade, Erika Alves Marinho de Andrade, Maria do Amparo Andrade, Alice Santana Valadares Ribeiro, Rodrigo Pinto Pedrosa, Ana Paula de Lima Ferreira, Anna Myrna Jaguaribe de Lima

3 registry-linked trialsOpen access · goldAbstract read
In one paragraph

Article in Nature and science of sleep, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 10 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 3 pooled it
1.3field-weighted citation impact, top 19% 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.

NCT05210998 nacompletednot on this mapstarted 2022, after this paper: background citation

Investigation of the Effects of Respiratory Muscle Training Combined With Aerobic Exercise in Persons With Obstructive Sleep Apnea Syndrome

TypeinterventionalSponsorIstanbul University - CerrahpasaRan2022 to 2023Enrolled36ConditionsObstructive Sleep Apnea SyndromeArmsGradual Aerobic exercise training AND Respiratory muscle training, Gradual Aerobic exercise training
NCT06087900 nacompletednot on this mapstarted 2022, after this paper: background citation

Effects of Different Exercise Modalities on Apnea-Hypopnea Index and Oxidative Stress in Patients With Obstructive Sleep Apnea.

TypeinterventionalSponsorChulalongkorn UniversityRan2022 to 2023Enrolled40ConditionsObstructive Sleep ApneaArmsModerate continuous training (MICT), High intensity interval training (HIIT), Inspiratory muscle training (IMT), Control
NCT07329049 nanot yet recruitingnot on this mapstarted 2026, after this paper: background citation

The Effect of Inspiratory Muscle Training on Cognitive Functions, Cerebral Oxygenation, and Neurotrophic Factor Level in Patients With Obstructive Sleep Apnea Syndrome

TypeinterventionalSponsorIstinye UniversityRan2026 to 2027Enrolled42ConditionsObstructive Sleep Apnea Syndrome (OSAS)Armsinspiratory muscle training, Placebo inspiratory muscle training, Usual Care
3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 3 syntheses or guidelines pooled it, 17 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Inspiratory muscle training as adjuvant therapy in obstructive sleep apnea: a randomized controlled trial.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2022
    Trial
  5. Exploring Exercise Interventions for Obstructive Sleep Apnea: A Scoping Review.Journal of functional morphology and kinesiology · 2025
    Review
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  7. Article
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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

8 authors at 2 institutions in 1 country.

José Carlos Nogueira Nóbrega-JúniorDepartment of Physical Therapy, Facottur Faculty, Olinda, Pernambuco, Brazil.ORCID 0000-0003-3908-9260
Armèle Dornelas de AndradeDepartment of Physical Therapy Federal University of Pernambuco, Recife, Pernambuco, Brazil.
Erika Alves Marinho de AndradeDepartment of Physical Therapy Federal University of Pernambuco, Recife, Pernambuco, Brazil.
Maria do Amparo AndradeDepartment of Physical Therapy Federal University of Pernambuco, Recife, Pernambuco, Brazil.
Alice Santana Valadares RibeiroDepartment of Rehabilitation, Hospital Otávio de Freitas, Recife, Pernambuco, Brazil.
Rodrigo Pinto PedrosaSleep and Heart Laboratory, Pronto Socorro Cardiológico de Pernambuco (PROCAPE)- University of Pernambuco, Recife, Pernambuco, Brazil.
Ana Paula de Lima FerreiraDepartment of Physical Therapy Federal University of Pernambuco, Recife, Pernambuco, Brazil.ORCID 0000-0002-0925-0183
Anna Myrna Jaguaribe de LimaDepartment of Physical Therapy Federal University of Pernambuco, Recife, Pernambuco, Brazil.ORCID 0000-0002-4224-4009
Universidade Federal de Pernambuco · BRUniversidade de Pernambuco · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeExercise programs have been considered as an adjuvant treatment in obstructive sleep apnea (OSA). However, few studies have focused on the effects of the inspiratory muscle training (IMT) in reducing the severity and the symptoms of OSA. PATIENTS AND

methodsA randomized controlled trial was conducted and approved by the local Ethics Committee. All subjects signed the informed consent form and were randomized into 2 groups: a) IMT group (n = 8), 8 weeks of IMT with 75% of maximal inspiratory pressure (MIP) and b) placebo group (n = 8): subjects performed IMT without load.

resultsIMT group showed reduction in the apnea-hypopnea index (AHI) (p = 0.01), in the Berlin questionnaire score (p = 0.001) and an increase in inspiratory muscle strength (p = 0.018). IMT group demonstrated a reduction in the AHI (31.7 ± 15.9 events/h vs 29.9 ± 15.8 events/h; p <0.001), in the Berlin questionnaire scores (2.6 ± 0.5 vs 1.2 ± 0.5; p = 0.016), Pittsburgh Sleep Quality Index (PSQI) score (7.2 ± 3.6 vs 3.7 ± 1.3; p = 0.008), in the Epworth Sleepiness Scale (ESS) (12.5 ± 4.0 vs 7.7 ± 3.0; p = 0.008) and increase in MIP (83.6 ± 26.5 cmH

conclusionThe IMT promotes discrete changes in the AHI and improves sleep quality and excessive daytime sleepiness in OSA. Moreover, IMT is a cheap, useful and simple home-based training program and can be considered as an adjunct therapy for OSA patients.

Indexed as

adjuvant therapyexercise trainingobstructive sleep apnea symptomsrespiratory exercises

Identifiers

PMID33293881
PMCPMC7719323
OpenAlexW3108637924

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

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.