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논문 기본 정보

자료유형
학술대회자료
저자정보
강상현 (부산대학교) 최지원 (부산대학교) 추한박 (부산대학교) 진상은 (부산대학교)
저널정보
대한인간공학회 대한인간공학회 학술대회논문집 2020 대한인간공학회 추계학술대회
발행연도
2020.10
수록면
19 - 23 (5page)

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초록· 키워드

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Objective: The current study aimed to quantify physical and cognitive workload of the low back pain developers (PDs) and non-pain developers (NPDs) under the office working environment in which two natural-unconstrained postures (prolonged sitting, prolonged standing) and two cognitive demand tasks (low cognitive demand task, high cognitive demand task) were tested. Background: Previous studies suggested a possible difference in sit-stand schedules between PDs and NPDs, but they have only focused only on preventing the first occurrence of low back pain. Method: 13 healthy males visited twice on different days for testing prolonged sitting and standing, and were asked to play the Tetris game and perform cognitive tests for 75 minutes. The experimental protocol consisted of five 15 min sessions, and each session had Tetris game (primary task), cognitive tests (secondary task), and dual task. The dependent variables included three cognitive tests and EMG measures, captured every 7 min. Results: PDs exhibited significantly greater peak NEMG (90<SUP>th</SUP> %ile) in abdominal muscles while standing compared to sitting, but there was no difference in NPDs. In addition, executive function in PDs deteriorated under the high cognitive demand conditions compared to NPDs. These findings might provide an evidence that a subjective complaint of pain may interfere with executive function and result in a confliction between motor control and sensory processing. Conclusion: From biomechanical perspective, PDs had a greater physical workload in the standing posture than in the sitting posture, but NPDs had no difference between postures. From perspective of cognitive abilities, PDs degraded executive function under a dual-task scenario as compared to NPDs.

Application: The cost-benefit of physical and cognitive workload between PDs and NPDs could be used for leveling continuous static muscle loading and creating sit-stand schedules for various cognitive load.

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ABSTRACT
1. Introduction
2. Method
3. Results and Discussion
4. Conclusion
References

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