Clinical Trials Logo

Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT03154138
Other study ID # 69HCL17_0172
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date December 4, 2017
Est. completion date April 2024

Study information

Verified date March 2022
Source Hospices Civils de Lyon
Contact Aurélien HUGUES, PhD
Phone 0637054040
Email huguesaurelien@gmail.com
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Postural imbalance after stroke leads to limitations of activity and a worse autonomy. The postural imbalance is increased in right supratensorial stroke (RSS) compared to left supratensorial stroke. The evidences for the rehabilitation of postural imbalance are weak. Likewise, disorders of spatial reference frames are increased in RSS. The postural imbalance is correlated with the disorders of spatial reference frames in RSS patients. Prismatic adaptation (PA) is often used for the rehabilitation of unilateral spatial neglect after RSS. Several studies have demonstrated a peculiar expansion of sensorimotor after-effects to spatial cognition. An immediate effect of reduction in postural imbalance have been showed in acute RSS. Therefore, it is interested to investigate the immediate and delayed effects of PA on the postural balance and the spatial reference frames in chronic RSS to purpose a new therapeutic approach. The hypothesis of the study is that PA would improve the postural balance (activity) of chronic RSS patients by a reduction in mediolateral postural asymmetry, resulting from a " bottom-up " action of PA on spatial reference frames.


Recruitment information / eligibility

Status Recruiting
Enrollment 28
Est. completion date April 2024
Est. primary completion date December 2023
Accepts healthy volunteers No
Gender All
Age group 18 Years to 80 Years
Eligibility Inclusion Criteria: - Adult, over 18 years old, and less than 80 years old - Stroke - right - supratensorial, - unilateral, - haemorrhagic or ischemic, - chronic (over 12 months) - Ability to stay over 30 seconds in standing static position with open eyes and close eyes - Show a postural imbalance, determined by a body weight bearing on right lower limb = 60% during at least one posturographic evaluation with open eyes and that requires an inpatient rehabilitation - Covered by a Health System where applicable, and/or in compliance with the recommendations of the national laws in force relating to biomedical research - Free, enlightened and written consent of the patient Exclusion Criteria: - Cerebellar lesion - Brainstem lesion - Bilateral cerebral lesion - All orthopaedic or rheumatologic diseases, retinal visual impairments or other diseases interfering with assessments in accordance with the investigator's judgment - Pregnancy or breast feeding - Under an administrative or legal supervision

Study Design


Related Conditions & MeSH terms

  • Chronic Right Supratensorial Stroke Patients
  • Stroke

Intervention

Device:
The prismatic adaptation (PA)
Prismatic adaptation (PA) is based on the wearing of a pair of glasses producing a visual field deviation of 10° to rightward. While wearing theses glasses, the patient is asked to perform fast pointing movements towards targets by the right hand. Targets are symmetrical located at 10° in the right and left side in front of the patient. The order of pointing between these two targets is pseudo-randomly by the therapist. At the beginning of the exposure, the patient performs pointing movements with a shift toward the right side (initial errors consecutive to the prism deviation). Taking into account theses errors, the patient then compensates the optical deviation. After removing the prismatic glasses, the asked pointing movement to the targets is once again shifted but to the left side this time (after-effects attesting the prismatic adaptation)
The sham prismatic adaptation (S-PA)
The sham prismatic adaptation (S-PA) is based on the wearing of a pair of glasses producing no visual field deviation. Theses sham glasses is identical with theses used in PA group without the optical deviation. The conditions are similar with theses in the PA group. The procedure with the sham glasses are similar with these one used in the PA group: While wearing the sham glasses, the patient is asked to perform fast pointing movements towards targets by the right hand. Targets are symmetrical located at 10° in the right and left side in front of the patient. The support with targets are the same as these one used in the PA group. The order of pointing between these two targets is pseudo-randomly by the therapist. At the beginning of the exposure, the patient performs pointing movements without shift. No compensation of movement is observed. After removing the prismatic glasses, the asked pointing movement to the targets is not shifted (No after-effects observed)

Locations

Country Name City State
France CHU Grenoble Grenoble
France CHU Saint-Etienne Saint-Étienne
France Hôpital Henry Gabrielle, service de médecine physique et réadaptation Saint-Genis-Laval

Sponsors (5)

Lead Sponsor Collaborator
Hospices Civils de Lyon Centre National de la Recherche Scientifique, France, Equipe " ImpAct Trajectoires " du Centre de Recherche en Neurosciences de Lyon (CRNL), Institut National de la Santé Et de la Recherche Médicale, France, Université Claude Bernard Lyon 1 (UCBL)

Country where clinical trial is conducted

France, 

Outcome

Type Measure Description Time frame Safety issue
Primary Balance: The inter-group difference of within-group changes for the Berg Balance Scale (BBS) Balance : The inter-group difference of within-group changes for the Berg Balance Scale (BBS) Score between 0 and 56 points Change from baseline (mean of the 2 pre-tests) at 7 days after the end of treatment (3 weeks about after the baseline)
Secondary Balance: the inter-group difference of within-group changes for the Berg Balance Scale (BBS) Change from baseline (mean of the 2 pre-tests) at one month after the end of treatment (M+1) (1 month and 2 weeks about after the baseline) and at three months after the end of treatment (M+3) (3 month and 2 weeks about after the baseline) Score between 0 and 56 points. Change from baseline at 1 month after the end of treatment
Secondary Balance: The inter-group difference of within-group changes for standing static posturographic variables Satnding posturographic variables include mediolateral and anteroposterior deviation of center of pression (COP), mediolateral and anteroposteriorvariability of COP, sway area of COP, body weight bearing on each lower limb.
The mediolateral and anteroposterior deviations of COP measured in millimeters, the sway area of COP calculated in square millimeters, the mediolateral and anteroposterior variability of COP calculated as the standard deviation of the mediolateral and anteroposterior deviations of COP, body weight bearing on each lower limb measured in percent of total weight bearing.
Change from baseline at +2 Hours, Day 3, Day7, Month +1 and Month +3 after the end of treatment
Secondary Lateropulsion: The inter-group difference of within-group changes for the Scale for Contraversive Pushing (SCP) Score between 0 and 6 points Change from baseline at +2 Hours, Day 3, Day7, Month +1 and Month +3 after the end of treatment.
Secondary The inter-group difference of within-group changes for each spatial reference frame (MSSA, VSSA, OLP, LBA) Spatial reference frames include the measurement of the manual subjective straight aheaed (MSSA), the visual subjective straight ahead (VSSA), open-loup pointing without visual feedback (OLP), the subjective longitudinal body axis (LBA) Angular deviation measured in degrees Change from baseline at +2 Hours, Day 3, Day 7, Month 1 and Month 3 after the end of treatment
Secondary Autonomy : Inter-group difference of within-group changes for the Barthel index (BI) Score between 0 and 100 points Change from baseline (pre-test) at Day7, Month +1 and Month +3 after the end of treatment.
Secondary Additionnal descriptive anatomic study of cerebral lesions using diffusion tensor Magnetic Resonance Imaginig (MRI) (Tractography) To determine the location of the cerebral lesion, the size of cerebral lesion and to quantify the severity of the disconnection (after tractography reconstructions of white matter pathways). Before the starting of the intervention, during the pre-tests.
Secondary Relationship between prismatic adaptation induced changes on misperceptions of spatial reference frames and these on postural and balance disorders Statistical correlations between changes (before versus after intervention) on Berg Balance Scale (BBS), postural disorders (i.e. Weight Beainf Asymetry (WBA), body sway, and lateropulsion), and spatial reference frames. +2Hours, Day+3, Day+7, Month+1 and Month+3.