https://www.selleckchem.com/pr....oducts/seclidemstat.
OBJECTIVE Professional voice users form an increasing part of our population. Physical fitness instructors listed as professional voice users are at risk for voice problem as they perform vigorous exercises, instruct at the same time and compete vocally with loud background music. Hence, there is a dire need to study the voice problems in this population. The current study was aimed at investigating the phonatory and respiratory functions in physical fitness instructors in comparison to a control group. STUDY DESIGN Cross-sectional