Adolescence Idiopathic Scoliosis, AIS
Conditions
Brief summary
This study aims to assess the immediate effects of a self-corrective exercise on muscle activity and spinal alignment in adolescents with idiopathic scoliosis. Eligible participants will undergo clinical assessments of spine deviation and surface electromyography (EMG) before and after a single session of guided self-controled and self-corrective exercise. The findings may help inform rehabilitation strategies for adolescent idiopathic scoliosis.
Detailed description
Adolescent idiopathic scoliosis (AIS) involves three-dimensional spinal deformity and asymmetric paraspinal muscle activation. Scoliosis-specific, self-corrective exercises are widely used in conservative care, but their immediate neuromuscular and postural effects after a single guided session remain insufficiently characterized. This prospective pre-post study will enroll adolescents with radiographically confirmed AIS for one clinic visit. After eligibility confirmation and consent/assent, participants will complete baseline assessments, perform a standardized, therapist-guided self-controlled, self-corrective exercise tailored to curve pattern, and then repeat the same assessments immediately afterward. The protocol emphasizes axial elongation, active self-correction delivered within a brief supervised session. The primary purpose is to quantify immediate changes in spinal alignment and paraspinal muscle activity to explore potential mechanisms of action and inform refinement of rehabilitation strategies for AIS. Feasibility and tolerability will be monitored during the single visit. No additional imaging is required beyond existing clinical records. Findings will be disseminated through scientific channels to guide future conservative management and hypothesis generation for subsequent controlled trials.
Interventions
BEHAVIORALControl Exercise
A standard exercise without self-correction, performed by all participants as the control condition.
BEHAVIORALSelf-corrective Exercise
A self-corrective exercise intervention targeting improved postural alignment and muscle activation.
Sponsors
The University of Hong Kong
Study design
Allocation
NON_RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
10 Years to 19 Years
Healthy volunteers
Yes
Inclusion criteria
* adolescent males and females with AIS * being aged 11 to 19 years
Exclusion criteria
* having a nonidopathic etiology of scoliosis * history of spinal surgery; spine trauma (e.g., fracture or motor vehicle accident) * metal implants (e.g., pacemaker) * not capable of understanding and completing our motor tasks * experiencing severe dermatological conditions or have open wounds at electrode placement sites.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Back muscle symmetry assessed by surface electromyography (sEMG) using the Asymmetry Index (ASI). | Immediately after each exercise session. | Surface EMG signals will be recorded from bilateral back muscles to assess muscle symmetry. The the Asymmetry Index (ASI) ranges from 0 to 1, where 1 indicates complete asymmetry and 0 indicates perfect symmetry. Higher values indicate greater asymmetry. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Vertical line deviation (VLD) of spinous processes and sacrum in the coronal plane (posterior view) | Immediately after each exercise session | The deviation of spinous processes and sacrum from the vertical line will be measured in the coronal plane from a posterior view. |
Countries
Hong Kong
Outcome results
None listed