Ventilation and Speech Characteristics During Submaximal Aerobic Exercise Purpose This study examined alterations in ventilation and speech characteristics as well as perceived dyspnea during submaximal aerobic exercise tasks. Method Twelve healthy participants completed aerobic exercise-only and simultaneous speaking and aerobic exercise tasks at 50% and 75% of their maximum oxygen consumption (VO2 max). Measures of ventilation, ... Research Article
Research Article  |   October 01, 2008
Ventilation and Speech Characteristics During Submaximal Aerobic Exercise
 
Author Affiliations & Notes
  • Susan E. Baker
    Miami University, Oxford, OH
  • Jenny Hipp
    Miami University, Oxford, OH
  • Helaine Alessio
    Miami University, Oxford, OH
  • Contact author: Susan E. Baker, Department of Speech Pathology and Audiology, 2 Bachelor Hall, Miami University, Oxford, OH 45056. E-mail: bakerse1@muohio.edu.
Article Information
Special Populations / Genetic & Congenital Disorders / Speech, Voice & Prosody / Speech / Research Articles
Research Article   |   October 01, 2008
Ventilation and Speech Characteristics During Submaximal Aerobic Exercise
Journal of Speech, Language, and Hearing Research, October 2008, Vol. 51, 1203-1214. doi:10.1044/1092-4388(2008/06-0223)
History: Received November 29, 2006 , Revised May 25, 2007 , Accepted February 21, 2008
 
Journal of Speech, Language, and Hearing Research, October 2008, Vol. 51, 1203-1214. doi:10.1044/1092-4388(2008/06-0223)
History: Received November 29, 2006; Revised May 25, 2007; Accepted February 21, 2008
Web of Science® Times Cited: 4

Purpose This study examined alterations in ventilation and speech characteristics as well as perceived dyspnea during submaximal aerobic exercise tasks.

Method Twelve healthy participants completed aerobic exercise-only and simultaneous speaking and aerobic exercise tasks at 50% and 75% of their maximum oxygen consumption (VO2 max). Measures of ventilation, oxygen consumption, heart rate, perceived dyspnea, syllables per phrase, articulation rate, and inappropriate linguistic pause placements were obtained at baseline and throughout the experimental tasks.

Results Ventilation was significantly lower during the speaking tasks compared with the nonspeaking tasks. Oxygen consumption, however, did not significantly differ between speaking and nonspeaking tasks. The perception of dyspnea was significantly higher during the speaking tasks compared with the nonspeaking tasks. All speech parameters were significantly altered over time at both task intensities.

Conclusions It is speculated that decreased ventilation without a reduction in oxygen consumption implies that utilization of oxygen by the working muscles was increased during the speaking tasks to meet the metabolic needs. A greater ability to utilize oxygen from inspired air is found in individuals who are at higher fitness levels, and therefore these findings may have implications for individuals who must complete simultaneous speech and exercise for occupational purposes (e.g., fitness/military drill instructors, singers performing choreography).

Acknowledgments
This research was funded by the American Speech-Language-Hearing Association’s Advancing Academic-Research Careers (AARC) Award. We would like to sincerely thank Jamie Luketic and Meghan McCarthy for their assistance in data measurement.
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