ArticlePloS one2022
Postural-respiratory function of the diaphragm assessed by M-mode ultrasonography.
Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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.
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.
Who cites it
10 citing papers in PubMed, 16 citations in OpenAlex.
- Respiratory pattern change in female and male runners by respiratory tract restriction using a respirator.PloS one · 2026Trial
- Resveratrol Ameliorates PTZ-Induced Seizure Activity and Diaphragm Muscle Dysfunction by Regulating Calcium Handling and Apoptotic Pathways in Rats.Molecular neurobiology · 2026Article
- Mapping the Evidence on Abdominal Weight Training for Respiratory Muscle Strength: A Scoping Review.Cureus · 2026Review
- Impact of arm position and load on upper and lower esophageal sphincter pressures.Frontiers in physiology · 2026Article
- Diaphragm excursion and thickness in patients with chronic low back pain with and without lumbar instability.Scientific reports · 2025Article
- Inspiratory muscle training in natural bodybuilders: adaptations in diaphragm muscle thickness and maximal strength.Frontiers in physiology · 2025Article
- Diaphragmatic downward excursion as a novel metric for assessing Valsalva maneuver efficacy in patent foramen ovale detection by contrast transthoracic echocardiography.Frontiers in cardiovascular medicine · 2025Article
- Motor Dysfunctions in Fibromyalgia Patients: The Importance of Breathing.Open access rheumatology : research and reviews · 2024Article
- Ultrasonographic evaluation of diaphragmatic excursion changes after major laparoscopic surgeries in the Trendelenburg position under general anaesthesia: A prospective observational study.Indian journal of anaesthesia · 2023Article
- The Importance of the Diaphragm in Neuromotor Function in the Patient with Chronic Obstructive Pulmonary Disease.International journal of chronic obstructive pulmonary disease · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesThe diaphragm changes position and respiratory excursions during postural loading. However, it is unclear how it reacts to lifting a load while breath-holding or breathing with simultaneous voluntary contraction of the abdominal muscles (VCAM). This study analyzed diaphragm motion in healthy individuals during various postural-respiratory situations.
methods31 healthy participants underwent examination of the diaphragm using M-mode ultrasonography, spirometry, and abdominal wall tension (AWT) measurements. All recordings were performed simultaneously during three consecutive scenarios, i.e., 1. Lifting a load without breathing; 2. Lifting a load and breathing naturally; 3. Lifting a load and breathing with simultaneous VCAM.
resultsUsing paired-samples t-tests, lifting a load without breathing displaced the diaphragm's expiratory position more caudally (P < .001), with no change noted in the inspiratory position (P = .373). During lifting a load breathing naturally, caudal displacement of the diaphragm's inspiratory position was presented (P < .001), with no change noted in the expiratory position (P = 0.20) compared to tidal breathing. Total diaphragm excursion was greater when loaded (P = .002). Lifting a load and breathing with VCAM demonstrated no significant changes in diaphragm position for inspiration, expiration, or total excursion compared to natural loaded breathing. For all scenarios, AWT measures were greater when lifting a load (P < .001).
conclusionIn healthy individuals, caudal displacement and greater excursions of the diaphragm occurred when lifting a load. The postural function of the diaphragm is independent of its respiratory activity and is not reduced by the increase in AWT.
Indexed as
Identifiers
What OpenQuestion holds
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.