The Accuracy of the Swallowing Kinematic Analysis at Various Movement Velocities of the Hyoid and Epiglottis.
10.5535/arm.2013.37.3.320
- Author:
Seung Hak LEE
1
;
Byung Mo OH
;
Seong Min CHUN
;
Jung Chan LEE
;
Yusun MIN
;
Sang Heum BANG
;
Hee Chan KIM
;
Tai Ryoon HAN
Author Information
1. Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea. keepwiz@gmail.com
- Publication Type:Original Article
- Keywords:
Reproducibility of results;
Biomechanics;
Deglutition
- MeSH:
Biomechanics;
Deglutition;
Epiglottis;
Mass Screening;
Reference Values;
Reproducibility of Results
- From:Annals of Rehabilitation Medicine
2013;37(3):320-327
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: To evaluate the accuracy of the swallowing kinematic analysis. METHODS: To evaluate the accuracy at various velocities of movement, we developed an instrumental model of linear and rotational movement, representing the physiologic movement of the hyoid and epiglottis, respectively. A still image of 8 objects was also used for measuring the length of the objects as a basic screening, and 18 movie files of the instrumental model, taken from videofluoroscopy with different velocities. The images and movie files were digitized and analyzed by an experienced examiner, who was blinded to the study. RESULTS: The Pearson correlation coefficients between the measured and instrumental reference values were over 0.99 (p<0.001) for all of the analyses. Bland-Altman plots showed narrow ranges of the 95% confidence interval of agreement between the measured and reference values as follows: 0.14 to 0.94 mm for distances in a still image, -0.14 to 1.09 mm/s for linear velocities, and -1.02 to 3.81 degree/s for angular velocities. CONCLUSION: Our findings demonstrate that the distance and velocity measurements obtained by swallowing kinematic analysis are highly valid in a wide range of movement velocity.
