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KMID : 0357220120240010029
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Journal of Korean Society Physical Therapy
2012 Volume.24 No. 1 p.29 ~ p.34
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The Effect of Seat Surface Inclination on Respiratory Function and Speech Production in sitting
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Shin Hwa-Kyung
Kim Hye-Su
Lee Ok-Bun
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Abstract
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Purpose: The purpose of this study was to evaluate the difference between respiratory function and speech production, according to the seat surface inclination while in the sitting position.
Methods: Respiratory function (FVC, FEV1) and speech production (inspiratory frequency, unit reading time, paragraph reading time) were measured in 3 sitting conditions: horizontal seat surface, seat surface tilted forward 15 degrees, and seat surface tilted backward 15 degrees.
Results: We found that the mean values of FVC and FEV1 were statistically significant different according to three types of sitting positions (p<0.05). The following result was observed: forward tilted sitting > horizontal sitting > backward tilted sitting. There was no significant difference in speech production between the different positions. Respiratory function and speech production had a significantly negative correlation in the forward tilted condition and the backward tilted condition.
Conclusion: This finding suggests that the seat surface inclination have an effect on respiratory function. Especially, forward tilted sitting may be an effective posture that may help increases the respiratory function.
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KEYWORD
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Respiratory function, Seat surface inclination, Speech production
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