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Ultrasound Assessment of OMT on Diaphragm Motion

Journal: The AAO Journal Date: 2023/06, 33(2):Pages: 18-19. doi: Subito , type of study: observational study

Full text    (https://meridian.allenpress.com/aaoj/article/33/2/10/493538/LBORC-NUFA-Poster-Abstracts-2023-Residents)

Keywords:

diaphragm [73]
movement [57]
observational study [126]
OMT [2951]
osteopathic manipulative treatment [2973]
ultrasound [28]

Abstract:

Introduction/Background: Recent research has investigated ultrasound (US) as an effective means to assess the diaphragm, but no research has been published that quantifies the effect of Osteopathic Manual Therapy (OMT) on the motion of the diaphragm. Osteopathic principles consider the thoracoabdominal diaphragm motion an important component of health. Objective/Hypothesis: This prospective, observational, pilot study aims to determine if and how much OMT can affect changes in diaphragm motion based on US measurements obtained before and after treatment. We hypothesize that OMT will increase diaphragmatic movement significantly, both at rest and with maximal inspiratory effort. Methods: 20 “healthy” male & female volunteers ages 18-40 were recruited. Pre-OMT and post-OMT diaphragm assessments were completed using multiple B-mode and M-mode US images: including muscle thickness and motion characteristics of resting (tidal variability) and maximal inspiration of both the zone of apposition (lateral wall) and dome of the diaphragm. All subjects underwent 15 minutes of OMT, which was a combination of an adapted MOPSE protocol and individualized AGR treatment. Final statistical analysis included simple mean, standard deviation, proportions, and paired t-tests. Results: Preliminary data (n=4) demonstrated statistically significant average increase in bilateral diaphragmatic done and lateral wall motion post OMT in 8 of 12 parameters measured, best exemplified by left zone of apposition maximal inhalation increase of 5.8 cm on average. Final data will be complete with full statistical analysis. Discussion/Conclusion: OMT demonstrated a statistically significant increase in diaphragmatic motion after OMT. We plan to extend this pilot project to a prospective, randomized study in subjects with and without chronic pulmonary diseases. Limitations include US measurement variability, lack of blinding, and study limited to healthy subjects.


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