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Journal of Environmental and Public Health
Volume 2011 (2011), Article ID 232168, 6 pages
http://dx.doi.org/10.1155/2011/232168
Research Article

Maximum Aerobic Capacity of Underground Coal Miners in India

1Department of Physiology, National Medical College, Bhediyahi-18, P.O. Box 78, Parsa, Birgunj, Nepal
2Department of Mining Engineering, Bengal Engineering and Science University, Shibpur, Botanic Garden, West Bengal, Howrah 711103, India
3Department of Occupational Health, Ergonomics and Human Performance Research Laboratory, All India Institute of Hygiene & Public Health, (A.I.I.H & P.H), 110 C.R. Avenue; Kolkata 700073, India
4Department of Physiology, Himachal Dental College, Sundernagar, Himachal Pradesh, Mandi 175002, India

Received 18 May 2011; Accepted 12 July 2011

Academic Editor: Ike S. Okosun

Copyright © 2011 Ratnadeep Saha et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Miners fitness test was assessed in terms of determination of maximum aerobic capacity by an indirect method following a standard step test protocol before going down to mine by taking into consideration of heart rates (Telemetric recording) and oxygen consumption of the subjects (Oxylog-II) during exercise at different working rates. Maximal heart rate was derived as 220−age. Coal miners reported a maximum aerobic capacity within a range of 35–38.3 mL/kg/min. It also revealed that oldest miners (50–59 yrs) had a lowest maximal oxygen uptake (  mL/kg/min) compared to (  mL/kg/min) compared to (  mL/kg/min) the youngest group (20–29 yrs). It was found to be negatively correlated with age ( and −0.33 for younger and older groups respectively) and directly associated with the body weight of the subjects ( , ). Carriers showed maximum cardio respiratory capacity compared to other miners. Indian miners was found to be lower both compared to their abroad mining counterparts and various other non-mining occupational working groups in India.