Heart Rate Variability in a Vocal Stress Test with Special Consideration of the Objective Voice Function.

Objective: Many employees, especially in voice-intensive professions, are under psychological stress at work, which is very difficult to objectify. The aim of the study was to analyze correlations between heart rate variability (HRV) parameters and objective voice function using weighted voice parameters (Dysphonia Severity Index [DSI]) in order to determine whether subjects with impaired vocal function show a predominance of sympathetic control during a vocal stress test.

Study Design: Prospective.

Influence of Different Instrument Carrying Systems on the Kinematics of the Spine of Saxophonists.

Aims: Back strain is a common musculoskeletal complaint affecting musicians, which may be related to unsuitable playing positions causing fatigue and muscle tension. In this study, three saxophone-carrying systems (neck-strap, shoulder-strap, and Saxholder) were examined for their effects on spinal column kinematics.

Methods: The influence of saxophone-carrying systems was investigated in 14 physically healthy alto saxophonists using ultrasound topometry.