title: Interactions between voice fundamental frequency and cardiovascular parameters. Preliminary results and physiological mechanisms.
abstract: OBJECTIVE
  To determine heart rate influence on voice fundamental frequency under stress conditions.
  
  
  METHODS
  In 14 healthy volunteers, heart rate and blood pressure variables were analyzed during three classical autonomic tasks. Sustained voice samples were obtained to analyze F0.
  
  
  RESULTS
  Cold pressure test increased mean blood pressure, without effect on heart rate; isometric and mental tasks increased heart rate and blood pressure. Voice F0 was only affected by mental and cold ice tasks; it significantly correlated with the heart rate that occurred before and during every vocal emission.
  
  
  CONCLUSIONS
  Cardiovascular changes showed that subjects were significantly stressed during autonomic tasks. Heartbeat variations had a regular and significant influence on phonatory frequency, and this effect occurred during baseline and stress conditions.
authors: Radiology and Physical Medicine, Ophthalmology and Otorhinolaryngology Department, Medical Faculty, Malaga University, Spain. bermudezdealvear@gmail.com
authors: Rosa M Bermúdez de
authors: RM
authors: Alvear
authors: Francisco J
authors: FJ
authors: Barón-López
authors: María D
authors: MD
authors: Alguacil
authors: Mark S
authors: MS
authors: Dawid-Milner
mesh_terms: D000704:Analysis of Variance; D001341:Autonomic Nervous System / Q000503:physiopathology*; D001794:Blood Pressure; D002319:Cardiovascular System / Q000294:innervation*; D003080:Cold Temperature; D005260:Female; D018737:Hand Strength; D064368:Healthy Volunteers; D006339:Heart Rate; D006801:Humans; D007537:Isometric Contraction; D008297:Male; D055641:Mathematical Concepts; D013061:Speech Acoustics; D013068:Speech Production Measurement; D013312:Stress, Physiological; D013315:Stress, Psychological / Q000209:etiology / Q000503:physiopathology* / Q000523:psychology; D013997:Time Factors; D014833:Voice Quality; D055815:Young Adult