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Diseases 2018, 6(1), 1; https://doi.org/10.3390/diseases6010001

Age-Related Differences of Maximum Phonation Time in Patients after Cardiac Surgery

1
Department of International Health, Graduate School of Health Sciences, Kobe University, 7-10-2 Tomogaoka, Suna-ku, Kobe 654-0142, Japan
2
Department of Rehabilitation Medicine, St. Marianna University School of Medicine Yokohama-city Seibu Hospital, 1197-1, Yasashi-cho, Asahi-ku, Yokohama 241-0811, Japan
3
Department of Rehabilitation Medicine, St. Marianna University School of Medicine Hospital, 2-16-1 Sugao, Miyamae-ku, Kawasaki 216-8511, Japan
4
Department of Physical Therapy, Tokushima Bunri University, 180, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
*
Author to whom correspondence should be addressed.
Received: 28 November 2017 / Revised: 18 December 2017 / Accepted: 20 December 2017 / Published: 21 December 2017
(This article belongs to the Section Cardiology)
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Abstract

Background and aims: Maximum phonation time (MPT), which is related to respiratory function, is widely used to evaluate maximum vocal capabilities, because its use is non-invasive, quick, and inexpensive. We aimed to examine differences in MPT by age, following recovery phase II cardiac rehabilitation (CR). Methods: This longitudinal observational study assessed 50 consecutive cardiac patients who were divided into the middle-aged group (<65 years, n = 29) and older-aged group (≥65 years, n = 21). MPTs were measured at 1 and 3 months after cardiac surgery, and were compared. Results: The duration of MPT increased more significantly from month 1 to month 3 in the middle-aged group (19.2 ± 7.8 to 27.1 ± 11.6 s, p < 0.001) than in the older-aged group (12.6 ± 3.5 to 17.9 ± 6.0 s, p < 0.001). However, no statistically significant difference occurred in the % change of MPT from 1 month to 3 months after cardiac surgery between the middle-aged group and older-aged group, respectively (41.1% vs. 42.1%). In addition, there were no significant interactions of MPT in the two groups for 1 versus 3 months (F = 1.65, p = 0.20). Conclusion: Following phase II, CR improved MPT for all cardiac surgery patients. View Full-Text
Keywords: age-related difference; cardiac rehabilitation; maximum phonation time age-related difference; cardiac rehabilitation; maximum phonation time
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Izawa, K.P.; Kasahara, Y.; Hiraki, K.; Hirano, Y.; Watanabe, S. Age-Related Differences of Maximum Phonation Time in Patients after Cardiac Surgery. Diseases 2018, 6, 1.

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