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KMID : 1211620230180030113
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Journal of the Korean Society of Physical Medicine
2023 Volume.18 No. 3 p.113 ~ p.119
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Changes in the Pelvic Posture and Low Back Pressure Pain Threshold in Response to Smartphone Use in the Sitting Position: A Cross-sectional Study
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Lee Dae-Hee
Jeon Hye-Joo
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Abstract
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PURPOSE: This study aimed to determine the effects of using a smartphone in the sitting position on the pelvic posture and the low back pressure pain threshold (PPT).
METHODS: Thirty participants (15 women and 15 men) were recruited for this study. The participants were asked to sit in a normal sitting position without using a smartphone, followed by sitting while watching a video using a smartphone. The pelvic posture was measured using the back range of motion Ⅱ (BROMⅡ) device and a palpation meter. We measured PPT using the digital pressure algometer.
RESULTS: Pelvic posterior tilting was significantly greater when sitting while using a smartphone relative to sitting without using a smartphone (p < .05). There was no significant difference in the height of the iliac crest when sitting while using a smartphone compared to sitting without using a smartphone (p > .05). The PPTs of L1, L3, and L5 were significantly lower when sitting while using a smartphone relative to sitting without using a smartphone (p < .05).
CONCLUSION: Based on these results, it can be concluded that frequent smartphone use while sitting may potentially increase the risk of developing low back problems.
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KEYWORD
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Low back, Pelvis, Pressure pain threshold, Smartphone
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