Cervical Spine Hyperextension and Altered Posturo-Respiratory Coupling in Patients With Obstructive Sleep Apnea Syndrome.
TypeArticles dans des revues avec comité de lecture
Obstructive sleep apnea syndrome (OSAS) is associated with postural dysfunction characterized by abnormal spinal curvature and disturbance of balance and walking, whose pathophysiology is poorly understood. We hypothesized that it may be the result of a pathological interaction between postural and ventilatory functions. Twelve patients with OSAS (4 women, age 53 years [51-63] (median [quartiles]), apnea hypopnea index 31/h [24-41]) were compared with 12 healthy matched controls. Low dose biplanar X-rays (EOS® system) were acquired and personalized three-dimensional models of the spine and pelvis were reconstructed. We also estimated posturo-respiratory coupling by measurement of respiratory emergence, obtaining synchronized center of pressure data from a stabilometric platform and ventilation data recorded by an optico-electronic system of movement analysis. Compared with controls, OSAS patients, had cervical hyperextension with anterior projection of the head (angle OD-C7 12° [8; 14] vs. 5° [4; 8]; p = 0.002), and thoracic hyperkyphosis (angle T1-T12 65° [51; 71] vs. 49° [42; 59]; p = 0.039). Along the mediolateral axis: (1) center of pressure displacement was greater in OSAS patients, whose balance was poorer (19.2 mm [14.2; 31.5] vs. 8.5 [1.4; 17.8]; p = 0.008); (2) respiratory emergence was greater in OSAS patients, who showed increased postural disturbance of respiratory origin (19.2% [9.9; 24.0] vs. 8.1% [6.4; 10.4]; p = 0.028). These results are evidence for the centrally-mediated and primarily respiratory origin of the postural dysfunction in OSAS. It is characterized by an hyperextension of the cervical spine with a compensatory hyperkyphosis, and an alteration in posturo-respiratory coupling, apparently secondary to upper airway instability.
Files in this item
Showing items related by title, author, creator and subject.
Compensation of Respiratory-Related Postural Perturbation Is Achieved by Maintenance of Head-to-Pelvis Alignment in Healthy Humans ATTALI, Valérie; CLAVEL, Louis; ROUCH, Philippe; RIVALS, Isabelle; RÉMY-NÉRIS, Ségolène; SKALLI, Wafa; SANDOZ, Baptiste; SIMILOWSKI, Thomas (Frontiers Media SA, 2019)The maintenance of upright balance in healthy humans requires the preservation of a horizontal gaze, best achieved through dynamical adjustments of spinal curvatures and a pelvic tilt that keeps the head-to-pelvis alignment ...
CLAVEL, Louis; ATTALI, Valérie; RIVALS, Isabelle; NIERAT, Marie-Cécile; LAVENEZIANA, Pierantonio; ROUCH, Philippe; SIMILOWSKI, Thomas; SANDOZ, Baptiste (Springer, 2020)PURPOSE: In healthy humans, postural and respiratory dynamics are intimately linked and a breathing-related postural perturbation is evident in joint kinematics. A cognitive dual-task paradigm that is known to induce both ...
CLAVEL, Louis; JACQ, O.; NIERAT, Marie-Cécile; SIMILOWSKI, T.; ROUCH, Philippe; SANDOZ, Baptiste (Informa UK Limited, 2017)The objective of this study was to evaluate the postural perturbations due to the use of the spirometer, by comparing it to the Optoelectronic Plethysmography method, on postural control.
Non-invasive assessment of human multifidus muscle stiffness using ultrasound shear wave elastography: A feasibility study MOREAU, Baptiste; VERGARI, Claudio; GAD, Hisham; SANDOZ, Baptiste; SKALLI, Wafa; LAPORTE, Sébastien (Sage Journals, 2016)INTRODUCTION: There is a lack of numeric data for the mechanical characterization of spine muscles, especially in vivo data. The multifidus muscle is a major muscle for the stabilization of the spine and may be involved ...
SANDOZ, Baptiste; LAPORTE, Sébastien; SKALLI, Wafa; MITTON, David (Taylor & Francis, 2010)In order to improve the reliability of children’s models, the aim of this study was to determine the subject-specific masses and 3D locations of the centres of mass (CoM) of body segments using biplanar X-rays. Previous ...