Effects of an 8-Week Corrective Dance Exercises Intervention on Thoracic Hyperkyphosis, Scapular Position, Respiratory Function, and Happiness in Girls Aged 10–12 Years

Purpose: This study examined the impact of an 8-week corrective dance intervention on thoracic hyperkyphosis, scapular position, breathing, and happiness in girls aged 10–12 years. Methods: Sixty participants were randomly assigned to either an experimental (EX) or control (CO) group. The intervention involved rhythmic and corrective movements conducted 3 times a week. Measurements were taken before and after the intervention for thoracic hyperkyphosis angle, scapular position, lung function, and happiness levels. Results: EX showed greater improvements (P = .001) than CO for the decrement of thoracic hyperkyphosis angle (48.20–42.80°) than in CO (47.66°–46.59°), and scapular position improved more (P = .003) in EX (1.48°–1.20°) than in CO (1.44°–1.42°). Forced vital capacity (P = .001) and forced expiratory volume in 1 second (P = .001) significantly increased in EX (FVC: 2.65–3.40 L; FEV1: 2.32–2.74 L), while they remained stable in CO. Happiness levels significantly improved (P = .001) in EX (42.20–49.79) and slightly decreased in CO (41.80–40.15). Conclusions: The 8-week dance program improved posture, scapular position, breathing, and happiness in girls aged 10–12 years. It enhances physical health, emotional well-being, and social skills in children and adolescents.