The goal of this clinical trial is to evaluate the clinical effectiveness of proprioceptive neuromuscular facilitation (PNF) combined with spiral muscle chain training in improving spinal function and posture in adolescents aged 13 to 18 years with spinal curvature abnormalities. The main questions it aims to answer are: Does exercise-based intervention improve trunk inclination angle, kyphotic angle, and body balance parameters in adolescents with spinal curvature abnormalities? Does the combined intervention improve spinal mobility and paraspinal muscle endurance compared with single-intervention approaches? Does the combined intervention lead to favorable changes in surface electromyography (sEMG) indicators of the paraspinal muscles? Researchers will compare a PNF therapy group, a spiral muscle chain training group, and a combined PNF plus spiral muscle chain training group to assess differences in trunk inclination angle, kyphotic angle, spinal mobility, paraspinal muscle endurance, and neuromuscular activation outcomes. Body mass index, fat-to-muscle ratio, and other body-composition-related indicators will be analyzed as exploratory post hoc outcomes. Participants will: Be assigned to one of three intervention groups: PNF therapy alone, spiral muscle chain training alone, or combined PNF plus spiral muscle chain training. Participate in supervised exercise training sessions three times per week for 12 weeks. Undergo pre- and post-intervention assessments, including body composition testing, electronic spinal measurements, and surface electromyography testing.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
189
Proprioceptive neuromuscular facilitation (PNF) therapy is used as an exercise-based intervention to address abnormal spinal curvature in children with adolescent idiopathic scoliosis. The PNF program includes resisted scapular-pelvic patterns, cervical flexion and extension, trunk diagonal patterns (chopping and lifting), bilateral upper-limb diagonal patterns, and bridge exercises. Training sessions are supervised and conducted three times per week (every other day) for 12 weeks.
Spiral muscle chain (SPS) training is applied as an exercise-based intervention aimed at improving spinal alignment, postural control, and neuromuscular coordination in children with adolescent idiopathic scoliosis. The SPS program consists of spiral stabilization exercises performed with elastic resistance, body positioning control, and stretching components according to a standardized training protocol. Training sessions are supervised and conducted three times per week (every other day) for 12 weeks.
The combined intervention integrates proprioceptive neuromuscular facilitation (PNF) therapy and spiral muscle chain (SPS) training as a comprehensive exercise program for children with adolescent idiopathic scoliosis. Participants perform both PNF and SPS exercise components within each training cycle to target spinal alignment, muscle endurance, and neuromuscular activation. Training sessions are supervised and conducted three times per week (every other day) for 12 weeks.
The Affiliated High School of Nanjing Normal University
Nanjing, Jiangsu, China
Change in Trunk Tilt Angle (ATI)
Trunk tilt angle (Angle of Trunk Rotation, ATI) measured using an electronic spine assessment device to evaluate changes in spinal asymmetry and trunk alignment.
Time frame: Baseline and after 12 weeks of intervention
Change in Kyphotic Angle (KA)
Kyphotic angle will be measured using an electronic spinal assessment device to evaluate changes in sagittal spinal curvature.
Time frame: Baseline and after 12 weeks of intervention
Change in Body Balance Parameters
Body balance parameters assessed by electronic spine measurement, including head lateral deviation, shoulder asymmetry, and pelvic tilt.
Time frame: Baseline and after 12 weeks of intervention
Change in Body Mass Index (BMI)
Body mass index will be calculated from measured height and weight to evaluate changes in body composition and growth-related physical characteristics after the 12-week exercise intervention.
Time frame: Baseline and after 12 weeks of intervention
Change in Fat-to-Muscle Ratio (FMR)
Fat-to-muscle ratio will be derived from body composition testing to evaluate changes in the relative distribution of fat mass and muscle mass after the 12-week exercise intervention.
Time frame: Baseline and after 12 weeks of intervention
Change in Spinal Mobility
Spinal mobility assessed by electronic spine measurement, including lateral flexion, flexion-extension, and rotational range of motion.
Time frame: Baseline and after 12 weeks of intervention
Change in Surface Electromyography Parameters
Surface electromyography parameters of the trunk and paraspinal muscles will be assessed, including amplitude-domain and frequency-domain indicators such as integrated electromyography, mean power frequency, and median frequency.
Time frame: Baseline and after 12 weeks of intervention
Change in Trunk Muscle Activation Patterns
Trunk muscle activation patterns will be assessed during standardized functional tasks using surface electromyography to evaluate neuromuscular coordination and activation symmetry of trunk and paraspinal muscles.
Time frame: Baseline and after 12 weeks of intervention
Change in Paraspinal Muscle Endurance
Paraspinal muscle endurance will be assessed using standardized endurance testing, such as the Biering-Sorensen test, to evaluate the sustained contraction capacity of the trunk extensor muscles.
Time frame: Baseline and after 12 weeks of intervention
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.