Effect of sitting posture on respiratory function while using a smartphone.
[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.
Department of Physical Therapy, College of Health and Therapy, Daegu Haany University, Republic of Korea.
Kyung Woo
KW
Kang
Department of Physical Therapy, College of Rehabilitation Science, Daegu University, Republic of Korea.
Sang In
SI
Jung
Department of Physical Therapy, College of Rehabilitation Science, Daegu University, Republic of Korea.
Do Youn
do Y
Lee
Department of Physical Therapy, College of Rehabilitation Science, Daegu University, Republic of Korea.
Kyoung
K
Kim
Department of Physical Therapy, College of Rehabilitation Science, Daegu University, Republic of Korea.
Na Kyung
NK
Lee
Posture; Respiratory function; Smartphone