Comparing the Exposure-Response Relationships of Physiological and Traditional Vocal Warm-ups on Aerodynamic and Acoustic Parameters in Untrained Singers

Publication date: Available online 13 February 2018
Source:Journal of Voice
Author(s): Jing Kang, Chao Xue, Adriana Chou, Austin Scholp, Ting Gong, Yi Zhang, Zhen Chen, Jack J. Jiang
ObjectivesThe aim of this study was to quantify the effects of traditional and physiological warm-up exercises and to determine the optimal duration of these methods using acoustic and aerodynamic metrics.MethodsTwenty-six subjects were recruited to participate in both straw phonation exercises (physiological vocal warm-up) and traditional singing exercises (traditional vocal warm-up) for 20 minutes each, 24 hours apart. Phonation threshold pressure (PTP), fundamental frequency, jitter, shimmer, and noise-to-harmonics ratio were measured before the intervention (m0), as well as after 5 minutes (m5), 10 minutes (m10), 15 minutes (m15), and 20 minutes (m20) of intervention.ResultsPTP decreased significantly after straw phonation and reached a minimum value at 10 minutes (P < 0.001) and remained stable in traditional singing exercises. There were significant differences in fundamental frequency and shimmer from m0 to m15 and m20 in the traditional singing group (P = 0.001, P = 0.001, P = 0.001, and P = 0.002, respectively). No significant changes in acoustic parameters were observed after straw phonation.ConclusionsBoth straw phonation exercises and traditional singing exercises are effective for voice warm-up. Straw phonation improves the subjects' fatigue resistance and vocal economy, resulting in a reduced PTP, whereas traditional singing exercises focus on technical singing skills, leading to an improvement of acoustic variables.



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