[논문]온실에서 방울토마토 수확작업시 작업자의 생리학적 및 생체역학적 반응 측정

선우훈; 임기택; 김장호; 손현목; 정종훈

doi:10.5307/jbe.2011.36.3.223

온실에서 방울토마토 수확작업시 작업자의 생리학적 및 생체역학적 반응 측정
Measurement of Worker's Physiological and Biomechanical Responses during the Cherry Tomato Harvesting Work in a Greenhouse 원문보기

바이오시스템공학 = Journal of biosystems engineering, v.36 no.3, 2011년, pp.223 - 230

선우훈 (Research Institute for Agriculture and Life Sciences) , 임기택 (Research Institute for Agriculture and Life Sciences) , 김장호 (Research Institute for Agriculture and Life Sciences) , 손현목 (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University) , 정종훈 (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University)

Abstract ▼ AI-Helper

Physiological signals such as body temperature, heart rate, blood pressure and heart rate variability and biomechanical workload for stress analysis were investigated during the cherry tomato harvesting work in a greenhouse. The skin temperatures raised $0.05^{\circ}C$/min, $0.03^{\circ}C$/ min, and $0.08^{\circ}C$/min in standing, stooping and squatting postures, respectively. Breath rate significantly increased from 18 to 28 breaths/min during the cherry tomato harvesting work. As the heart rate during the work ranged from about 72 to 110 beats/min (bpm), the cherry tomato harvesting work appeared to be a light intensity task of less than 110 bpm. The worker's average energy consumption rate in three positions during 43 min working time was 65.74 kcal (91 kcal/h in 70 kg). This was a light intensity of work, compared to 75 kcal/h in 70 kg of basic metabolic energy consumption rate of a worker with 70 kg weight; The maximum shear force on the disk (L5/ S1) due to static workload in the cherry tomato harvesting work was 446 N in the stooping posture, 321 N in the squatting posture and 287 N in the standing posture. Acute stress index expressed with the heart rate variability, increased parasympathetic activation up to about 70 while workers were doing most agricultural work in this study. This study provided a system to measure quantitatively workers' physiological change, kinematics and kinetic factors without any restrictions of space in the greenhouse works.

주제어

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문제 정의

Therefore, the objective of this study was to measure workers’ physiological and biomechanical responses quantitatively during the cherry tomato harvesting work in a greenhouse.

제안 방법

A worker’s heart rate, pulse, temperature, physical activity, HRV and angular acceleration of a trunk was measured at each posture, and analyzed to evaluate the system.

대상 데이터

3%. The disease symptoms appeared in various body parts including legs (47.7%), waist (40.9%), and shoulders (36.6%). The particularly high prevalence of musculoskeletal disorders among field crop harvesters was reported; thus, understanding the causes and ways to improve this situation is needed.
This system consisted of a transmitter (Polar WearLink® 31 transmitter, Polar RS400) and a running computer.

성능/효과

(2) The average respiration rate during cherry tomato harvesting work was 23.5 ± 3.0 breaths/min.
(3) The average heart rate during the greenhouse work of cherry tomato harvesting was 91 bpm. Heart rate increased while performing greenhouse work, but it showed mainly a light intensity work.
he results of change in overall physical activity showed insignificant differences in the wrist and ankle, and movement in the waist was small. In cherry tomato harvesting, wrist and ankle movement was brisk.

참고문헌 (7)

Chandler, R. F., C. E. Clauser, J. T. McConville, H. M. Reynolds and J. W. Young. 1975. Investigation of inertial properties of the human body. Technical Report AMRL-74-137, Aerospace Medical Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio.
Choi, J. M., B. H. Bae and M. C. Kim. 2007a. The method to calculate the standard index using heart rate (R-R) interval variability. Korean Patent 10-0745972. (In Korean)
Choi, S. J. 2007b. Agricultural work safety model village agricultural work hazard factor diagnosis and administration, Won-jin work disease administration foundation, Working Environment Health Research Center, Korea. (In Korean)
Lavender, S. A., Y. C. Li, R. N. Natarajan and G.. B. J. Andersson. 2009. Does the asymmetry multiplier in the 1991 NIOSH lifting equation adequately control the biomechanical loading of the spine. Ergonomics 52(1):71-79.

상세보기
Nordin, M. and V. H. Frankel. 2001. Basic biomechanics of the musculoskeletal system, Third edition
Rural Resource Develop. 2004. Institute, RDA, Korea. Agricultural disaster prevention and safety management project. (In Korean)
Son, H. M., H. Seonwoo, K. T. Lim., J. H. Kim and J. H. Chung. 2010. Analysis of physiological bio-information, human physical activities and load of lumbar spine during the repeated lifting work. Journal of Biosystems Engineering 35(5):357-365. (In Korean)

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