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Gazzetta Medica Italiana - Archivio per le Scienze Mediche 2021 July-August;180(7-8):349-54

DOI: 10.23736/S0393-3660.20.04305-3

Copyright © 2020 EDIZIONI MINERVA MEDICA

lingua: Inglese

Modulation of vestibulo-ocular reflex gain-symmetry induced by osteopathic manipulations on the fascial system in young healthy subjects: a three-arm randomized controlled trial

Marco ROMAGNOLI , Andrea TARANTINO, Matteo GALLI, Daniele ORIGO

Department of Clinical Research, SOMA Istituto Osteopatia Milano, Milan, Italy



BACKGROUND: The vestibulo-ocular reflex (VOR) gain-symmetry is fundamental for gaze control. VOR is a multisensorial integrated reflex that combines vestibular, visual, and proprioceptive inputs. Osteopathic manipulative treatment (OMT) approaches fascial system for the treatment of somatic dysfunction. Fascial system was recently described as body-wide proprioceptive organ. Hence, we performed a single-blinded, with third rater-blinded, three-arm randomized controlled trial to investigate the OMT interaction with VOR-gain-symmetry (VGS) of young healthy subjects, with the aim to evaluate the interaction between: proprioception, VOR and osteopathic manipulations on fascial-system.
METHODS: Participants were treated and examined in the SOMA institute outpatient clinic. According to the randomization list, the subjects received a sham OMT, an OMT and no interventions. The primary endpoint was the VGS variation (VGS01), assessed by video head impulse test, after 30 minutes from the interventions. Besides, VGS after 1 week from the interventions was the secondary endpoint.
RESULTS: One-hundred and eighty subjects were randomized; of those, 171 subjects completed the trial. Subjects who underwent OMT reduced them VGS01 asymmetry about 3.89% with a significant difference between groups (P=0.002). At follow-up, subjects who receive OMT maintained a 2.29% asymmetry reduction in contrast to the other groups that presented no delta with baseline (P=0.011).
CONCLUSIONS: OMT compared to placebo and time control demonstrated a plausible modulatory effect on VOR asymmetry of healthy subjects, which it might be mediated by proprioceptive inputs and multisensorial integration of vestibular system. A proof-of-concept trial should be performed to test the OMT in chronic dizzy patients.


KEY WORDS: Fascia; Reflex, vestibulo-ocular; Osteopathic medicine; Head impulse test; Proprioception; Manipulation, osteopathic

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