A Comparison Study of Posture and Fatigue of Neck According to Monitor Types (Moving and Fixed Monitor) by Using Flexion Relaxation Phenomenon (FRP) and Craniovertebral Angle (CVA)

Kyeong-Hee Choi, Min-Uk Cho, Chae-Won Park, Seoung-Yeon Kim, Min-Jung Kim, Boram Hong and Yong-Ku Kong
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Kyeong-Hee Choi: Department of Industrial Engineering, Sungkyunkwan University, Suwon 16419, Korea
Min-Uk Cho: Department of Industrial Engineering, Sungkyunkwan University, Suwon 16419, Korea
Chae-Won Park: Department of Industrial Engineering, Sungkyunkwan University, Suwon 16419, Korea
Seoung-Yeon Kim: Department of Industrial Engineering, Sungkyunkwan University, Suwon 16419, Korea
Min-Jung Kim: Department of Industrial Engineering, Sungkyunkwan University, Suwon 16419, Korea
Boram Hong: DOTHEAL Co., Ltd., Suwon 16690, Korea
Yong-Ku Kong: Department of Industrial Engineering, Sungkyunkwan University, Suwon 16419, Korea

IJERPH, 2020, vol. 17, issue 17, 1-12

Abstract: This study quantified the neck posture and fatigue using the flexion relaxation phenomenon (FRP) and craniovertebral angle (CVA); further, it compared the difference between the level of fatigue and neck posture induced by two types of monitors (regular fixed monitor and moving monitor). Twenty-three male participants were classified into two groups—the low-flexion relaxation ratio (FRR) group and the normal-FRR group, depending on the FRR value. All participants performed a document task for 50 min using both types of monitors. It was found that the FRR values significantly decreased after the documentation task. The CVA analysis showed that the moving monitor’s frequency of forward head posture (FHP) was lower than that for the fixed monitor. Overall, the moving monitor worked better than the fixed monitor; this can be interpreted as proof that such monitors can reduce neck fatigue.

Keywords: forward head posture (FHP); flexion relaxation phenomenon (FRP); visual display terminal (VDT); neck fatigue; craniovertebral angle (CVA) (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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