Decreased respiratory-related postural perturbations at the cervical level under cognitive load
TypeArticles dans des revues avec comité de lecture
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 postural and ventilatory disturbances can be used to modulate this multijoint posturo-ventilatory (PV) interaction, particularly in the cervical spine, which supports the head. The objective of this study was to assess this modulation. METHODS: With the use of optoelectronic sensors, the breathing profile, articular joint motions of the cervical spine, hip, knees and ankles, and centre of pressure (CoP) displacement were measured in 20 healthy subjects (37 years old [29; 49], 10 females) during natural breathing (NB), a cognitive dual task (COG), and eyes-closed and increased-tidal-volume conditions. The PV interaction in the CoP and joint motions were evaluated by calculating the respiratory emergence (REm). RESULTS: Only the COG condition induced a decrease in the cervical REm (NB: 17.2% [7.8; 37.2]; COG: 4.2% [1.8; 10.0] p = 0.0020) concurrent with no changes in the cervical motion. The CoP REm (NB: 6.2% [3.8; 10.3]; COG: 12.9% [5.8; 20.7] p = 0.0696) and breathing frequency (NB: 16.6 min-1 [13.3; 18.7]; COG: 18.6 min-1 [16.3; 19.4] p = 0.0731) tended to increase, while the CoP (p = 0.0072) and lower joint motion displacements (p < 0.05) increased. CONCLUSION: This study shows stable cervical spine motion during a cognitive dual task, as well as increased postural perturbations globally and in other joints. The concurrent reduction in the PV interaction at the cervical spine suggests that this "stabilization strategy" is centrally controlled and is achieved by a reduction in the breathing-related postural perturbations at this level. Whether this strategy is a goal for maintaining balance remains to be studied.
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; 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.
Cervical Spine Hyperextension and Altered Posturo-Respiratory Coupling in Patients With Obstructive Sleep Apnea Syndrome. CLAVEL, Louis; REMY-NERIS, Ségolène; SKALLI, Wafa; ROUCH, Philippe; LESPERT, Yoann; SIMILOWSKI, Thomas; SANDOZ, Baptiste; ATTALI, Valérie (Frontiers Editorial, 2020)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 ...
LESPERT, Yoann; ATTALI, Valérie; SIMILOWSKI, Thomas; SANDOZ, Baptiste; ING, R.K. (Informa UK Limited, 2020-11-02)In healthy subjects, spinal alignment varies with the variations of lung volume and the natural breathing perturbs physiologically the balance. The reciprocal action between respiratory postural perturbation and partial ...
Experiences with a new biplanar low-dose X-ray device for imaging the facial skeleton: A feasibility study BERG, Britt-Isabelle; LAVILLE, Aurélien; COURVOISIER, Delphine S.; ROUCH, Philippe; SCHOUMAN, Thomas (PLOS, 2020)Methods We evaluated 48 biplanar radiographs from 12 patients (posteroanterior/lateral), originally taken for a scoliosis examination with a biplanar low-dose X-ray device. For this study, the images were further evaluated ...