Unraveling the Muscle Activation Equation: 3D Scoliosis-Specific Exercises and Muscle Response in Adolescent Idiopathic Scoliosis

Abstract

This study aimed to analyze both thoracic and lumbar erector spinae muscle activations during three different types of 3-dimensional elongation exercises in individuals with adolescent idiopathic scoliosis (AIS). Participants included 24 adolescents with AIS with a double curve (S type scoliosis), meeting specific criteria, such as a Cobb angle between 10° and 20° and not having undergone surgical or brace treatments. Electromyography (EMG) data were collected to evaluate muscle activation. Three-dimensional scoliosis-specific exercises were applied as 3 different exercise types with TheraBand resistance, manual stimulation, and breathing inducement from convex side to concave side until a symmetric position was maintained with self-correction. Different exercise types significantly affected muscle activity, with the highest activations in TheraBand resistance, followed by manual and just breathing inducement conditions for the convex and concave sides of the thoracic and lumbar regions. This suggests that exercise type significantly impacts muscle engagement in AIS patients, providing valuable insights for targeted exercise program design. Specially, the muscle activation of TheraBand resistive exercise can be an alternative with more muscle activation and motivational effects during a 3D scoliosis-specific exercise program.