Effect of Core Stabilization Exercises on Acoustic Properties and Performance of Voice

Abstract

Voice production is a complex process requiring coordination of multiple bodily systems, including core muscles, which play a crucial role in breath control and vocal stability. This study aimed to investigate the impact of core stabilization exercises on vocal performance and acoustic properties in individuals undergoing voice training. A total of 27 music students were divided into an experimental group (n = 17) and a control group (n = 10). The experimental group participated in a 10-week core stabilization program under physiotherapist supervision, while the control group did not receive any intervention. Assessments included acoustic voice analysis, vocal performance evaluation, and muscle strength tests conducted before and after the program. Results showed significant improvements in the experimental group compared to the control group in key acoustic parameters (mean pitch, jitter, shimmer, and harmonics), vocal performance (musicality, technique, and breath control), and core muscle strength. Participants reported better vocal control, improved breathing, and greater singing comfort. These findings suggest that core stabilization exercises can enhance vocal performance by improving respiratory control and core muscle strength. Integrating such exercises into vocal training programs may benefit singers and voice professionals. Further studies with larger samples and long-term follow-ups are recommended.