Journal of Physical Therapy Science
Online ISSN : 2187-5626
Print ISSN : 0915-5287
ISSN-L : 0915-5287
Original Article
Effect of sitting posture on respiratory function while using a smartphone
Kyung Woo KangSang In JungDo Youn LeeKyoung KimNa Kyung Lee
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2016 Volume 28 Issue 5 Pages 1496-1498


[Purpose] The purpose of this study was to investigate respiratory function in different sitting postures while using a smartphone. [Subjects and Methods] Fifty healthy volunteers were recruited. Participants were divided into 2 groups, a control group of participants who spent time as they liked for 1 hour, and a smartphone group of participants who spent time using a smartphone in a sitting position for 1 hour. To investigate changes in respiratory function, we measured forced vital capacity, forced expiratory volume in 1 second, ratio of forced expiratory volume in 1 second to forced vital capacity, and peak expiratory flow. [Results] There was a statistically significant difference in forced vital capacity and forced expiratory volume in 1 second between the control group and smartphone group. [Conclusion] The clinical implication of our findings is that the posture assumed while using a smartphone leads to reduced respiratory function.

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© 2016 by the Society of Physical Therapy Science. Published by IPEC Inc.

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License.
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