TY  - JOUR
DB  - PubMed
AU  - Jung, Sang In
AU  - Lee, Na Kyung
AU  - Kang, Kyung Woo
AU  - Kim, Kyoung
AU  - Lee, Do Youn
T1  - The effect of smartphone usage time on posture and respiratory function
LA  - eng
SN  - 0915-5287
SN  - 2187-5626
Y1  - 2016/01/
ET  - 2016/01/30
AB  - [Purpose] The aim of this study was to evaluate the changes in posture and respiratory functions depending on the duration of smartphone usage. [Subjects and Methods] Participants were randomly allocated to 2 groups: group 1 (subjects who used smartphones for <4 hours/day, n=25) and group 2 (subjects who used smartphones for >4 hours/day, n=25). The craniovertebral angles of all participants were measured and scapular indices were calculated to assess the change in posture and forced vital capacity, forced expiratory volume in 1 second, the ratio of forced expiratory volume in 1 second to forced vital capacity, and peak expiratory flow were measured to assess changes in respiratory function. [Results] There were significant differences in the craniovertebral angle, scapular index, and peak expiratory flow depending on the duration of smartphone usage. [Conclusion] The result of this study showed that prolonged use of smartphones could negatively affect both, posture and respiratory function.
SP  - 186
EP  - 189
VL  - 28
IS  - 1
AN  - 26957754
UR  - https://pubmed.ncbi.nlm.nih.gov/26957754
DO  - 10.1589/jpts.28.186
L2  - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4756000/
U1  - 26957754[pmid]
U2  - PMC4756000[pmcid]
U4  - jpts-2015-817[PII]
J2  - J Phys Ther Sci
JF  - Journal of physical therapy science
KW  - Posture
KW  - Respiratory function
KW  - Smartphone
PB  - The Society of Physical Therapy Science
ER  -