The Accuracy of Respiratory Calibration Methods for Estimating Lung Volume during Speech Breathing: A Comparison of Four Methods across Three Adult Cohorts

Autor/inn/en	McKenna, Victoria S.; Huber, Jessica E.
Titel	The Accuracy of Respiratory Calibration Methods for Estimating Lung Volume during Speech Breathing: A Comparison of Four Methods across Three Adult Cohorts
Quelle	In: Journal of Speech, Language, and Hearing Research, 62 (2019) 8, S.2632-2644 (13 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Accuracy; Speech; Physiology; Older Adults; Comparative Analysis; Error Patterns; Measurement Techniques; Diseases; Neurological Impairments; Human Body; Least Squares Statistics; Age Differences + Suchen Sie Ihr Suchwort? Speaking; Sprechen; Physiologie; Älterer Erwachsener; Fehlertyp; Messtechnik; Disease; Krankheit; Neurodegenerative Erkrankung; Menschlicher Körper; Age; Difference; Age difference; Altersunterschied
Abstract	Purpose: This study evaluated the accuracy of respiratory calibration methods for estimating lung volume during speech breathing. Method: Respiratory kinematic data were acquired via inductance plethysmography in 32 young adults, 22 older adults, and 13 older adults with Parkinson's disease (PD). Raw rib cage (RC) and abdomen (AB) signals (V) were calibrated to liters using 4 correction methods: (a) isovolume maneuvers, (b) a constant 2:1 RC-to-AB ratio, (c) least squares method with RC correction only (LsqRC), and (d) least squares method with both RC and AB corrections (LsqRC/AB). Mean percent error, the absolute difference between estimated and actual lung volumes then normalized to each speaker's vital capacity, was calculated for each method. Results: For young adults, the LsqRC/AB method significantly reduced mean percent error compared to all other methods. Although LsqRC/AB also resulted in smaller errors for older adults and adults with PD, LsqRC/AB and LsqRC were not significantly different from one another in these groups. Conclusion: The LsqRC/AB method reduces errors across all cohorts, but older adults and adults with PD also have reduced errors when using LsqRC. Further research should investigate both least squares methods across larger age and disease severity ranges. (As Provided).
Anmerkungen	American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01