A Study of the Workload of Underground Trammers in the Ranigang Coal Field Area of West Bengal, India

• Autorzy: Dey N.C. , Samanta A. , Saha R.
• Języki publikacji: EN

Abstrakty

EN

Thirty healthy trammers were examined in underground haulage mines during their normal activity. Physiological strain in terms of heart rate (HR) varied between 101.6 and 104.7 beats/min with mean net cardiac cost of 33.06 and 34.06 beats/min for younger and older groups respectively. The average relative cardiac cost was lower for younger subjects than for older ones. Oxygen consumption (VO2) was measured with an Oxylog-II machine (UK); subsequently values were estimated. Maximum aerobic capacity was estimated with an indirect method following a standard step test protocol. The responses revealed that the average VO2 during the activity was 0.75 and 0.8 L/min, which corresponded to energy expenditure (EE) of 3.8 and 3.97 Kcal/min for younger and older subjects respectively. The workload in terms of HR and EE was moderate, whereas the aerobic strain experienced by aged workers was above the acceptable level.

Słowa kluczowe

EN

physiological workload; underground trammer; coal mine; aerobic capacity

PL

wydobycie węgla; procesy produkcyjne; obciążenie fizyczne; górnictwo podziemne; pracownik; Indie; obciążenie pracą

• Wydawca: Taylor & Francis
• Czasopismo: International Journal of Occupational Safety and Ergonomics
• Rocznik: 2006
• Tom: Vol. 12, No. 4
• Strony: 399--407
• Opis fizyczny: Bibliogr. 33 poz., rys., tab., wykr.

Twórcy

autor

Dey N.C.

• Mining Engineering Department, Bengal Engineering and Science University, Shibpur, West Bengal, India

autor

Samanta A.

• All India Institute of Hygiene and Public Health, Kolkata, India

autor

Saha R.

• Mining Engineering Department, Bengal Engineering and Science University, Shibpur, West Bengal, India

Bibliografia

• 1.Gallagher S. Ergonomics issues in mining. In: Karwowski W, Marras WS, editors. The occupational ergonomics handbook. New York, NY, USA: CRC Press LLC, 1999. p. 1893–915.
• 2.Garg A. Ergonomics and the older worker: an overview. Exp Aging Res. 1991;17(3):143–55.
• 3.Mincheva L, Nguyen VCh. Physical work capacity of miners. Probl Khig. 1986:11:55–64. In Bulgarian.
• 4.Turner JA. Predictors of chronic disability in injured workers: a systematic literature synthesis. Am J Ind Med. 2000;38:707–22.
• 5.Griffiths A. Work design and management—the older worker. Exp Aging Res. 1999;25:411–20.
• 6.Favre MN, Roche F, Januel B, Rigaudiere P, Seydoux D, Fournel P, et al. Exercise test and evaluation of exertional dyspnoea in former coal miners. Rev Mal Resir. 2002;19(3):315–22. In French.
• 7.Kampmann B, Piekarski C. Assessment of the risks of heat disorder work encountered during work in hot conditions in German hard coal mines. In: Tochihara Y, Ohnaka T, editors. Environmental ergonomics—the ergonomics of human comfort, health, and performance in the thermal environment. Amsterdam, The Netherlands: Elsevier; 2005. p. 79–84.
• 8.Sawka MN, Toner MM, Francesconi RP, Pandolf KB: Hypohydration and exercise: effects of heat acclimation, gender, and environment. J Appl Physiol. 1983;55(4):1147–53.
• 9.Brake DJ, Bates GP. Fluid losses and hydration status of industrial workers under thermal stress working extended shifts. Occup Environ Med. 2003;60(2):90–6.
• 10.Astrand PO, Rodhal K. Textbook of work physiology. New York, NY, USA: McGraw Hill; 1986.
• 11.Oxylog-2. Instruction manual. Gillingham, Kent, UK: PK Morgan.
• 12.Martiz JS, Morrison JF, Peter J, Strydom NB, Wyndham CH. A practical method of estimating an individual’s maximal oxygen intake. Ergonomics. 1961;4:97–122.
• 13.The Committee on Exercise, American Heart Association (AHA). Exercise testing and training of apparently healthy individuals: a handbook for physicians. New York, NY, USA: AHA; 1972.
• 14.Palenciano L, Gonzalez V, Santullano LA, Montoliu MA. Cardiac frequency in miners recorded during four to five work shifts. Eur J Appl Physiol Occup Physiol. 1996;73(3–4):369–75.
• 15.Brouha L. Evaluation of the physiological requirements of jobs. In: Physiology in industry: evaluation of industrial stress by the physiological reaction of the workers. London, UK: Pergamon Press; 1960. p. 82–108.
• 16.Nielson R, Meyer JP. Evaluation of metabolism from heart rate in industrial work. Ergonomics. 1987;30:565–72.
• 17.Malchaire J, Wallemaeq M. Validity of oxygen consumption measurement at the workplace. What are we measuring? Ann Occup Hyg. 1984;28:189–93.
• 18.Barbant C, Bedard S, Mergler D. Cardiac strain among women worker in an industrial laundry. Ergonomics. 1989;32:615–28.
• 19.Costa G, Berti F, Betta A. Physiological cost of apple farming activities. Ergonomics. 1989;20:281–86.
• 20.Montoliu MA, Gonzalez V, Palenciano L. Cardiac frequency throughout a working shift in coal miners. Ergonomics. 1995;38(6):1250–63.
• 21.Brake DJ, Bates GP. Fatigue in industrial workers under thermal stress on extended shift lengths. Occ Med (London). 2001:51(7):456–63.
• 22.Mincheva L, Khadzhiolova I, Deianov Kh. An occupational physiology study at the Asarel Mining and Milling Works. The evaluation of the work load in the basic jobs in an open-pit mine. Probl Khig. 1995;20:35–47. In Bulgarian.
• 23.Rodhal K, Vokac Z, Fugelli P, Vaage O, Maehlum S. Circulatory strain, estimated energy output and catecholamine excretion in Norwegian coastal fisherman. Ergonomics. 1974;17(5):585–602.
• 24.Pal AK, Sinha DK. The energy cost of metalliferous mining operations in relation to the aerobic capacity of Indian miners. Ergonomics. 1994;37(6):1047–54.
• 25.Ho Z. The energy expenditure of three categories of labourers in Southern China. In: Rand WM, Uauy R, Scrimshaw NS, editors. Protein-energy-requirement studies in developing countries: results of international research. Tokyo, Japan: United Nations University Press; 1984. Retrieved October 10, 2006, from: http://www.unu.edu/Unupress/unupbooks/80481e/80481E00.htm
• 26.Abt G, Tranter, M. Assessment of heart rate and metabolic rate in an Australian underground coalmine. Journal of Occupational and Health Safety—Australia & New Zealand. 1999;15(4):351–7.
• 27.Ramanathan NI, Dutta SR, Roy BN, Chatterjee A, Mullick LN. Energy cost of different muscular exercise tests performed by the Indian subjects. Indian Journal Occupational Health. 1967;10:253–61.
• 28.Chamoux A, Borel AM, Catilina P. Pour la standardization d’unefrequence cardiaque de repos. Arch Mal Prof. 1985;46:241–50.
• 29.Saha PN. Aerobic capacity of dockworkers in Bombay. Am Ind Hyg Assoc J. 1975;36:311–17.
• 30.Benavides R. Physical work capacity in coal miners and industrial worker. Rev Med Chil. 1992;120(10):1170–6. In Spanish.
• 31.Saha PN, Dutta SR, Bannerjee PK, Narayane GG. An acceptable workload for Indian workers. Ergonomics. 1979;22:1059–71.
• 32.Rutenfranz J, Hmarinen J, Klimmer F, Kylian H. Workload and demanded physical performance capacity under different industrial working conditions. In: Kaneko M, editor. Fitness for the aged, disabled and industrial worker (International series on sport sciences, 20). Champaign, IL, USA: Human Kinetics; 1990. p. 217–38.
• 33.TLVs®, Threshold Limit Values for chemical substances & physical agents in the workroom environment with intended changes (for 1981). Cincinnati, OH, USA: American Conference of Governmental Industrial Hygienists (ACGIH).