Fatigue in industrial workers under thermal stress on extended shift lengths

Brake, D J; Bates, Graham

doi:10.1093/occmed/51.7.456

Cited by 32 publications

(23 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So, the trend of lowered average aerobic capacity compared to general population and other occupations was in well concert with the results obtained by other investigators [12–15]. With respect to mining population abroad, the mean value was quite comparable with the Spanish [16], Polish [17] and Australian miners [18]. However, the aerobic capacities of South African miners (47 mL/kg/min) [19] and some other Spanish mine workers (43.2 mL/kg/min) [20] as found by other investigators was reported to be far higher than the observed value.…”

Section: Discussionsupporting

confidence: 87%

Maximum Aerobic Capacity of Underground Coal Miners in India

Saha

Dey

Samanta

et al. 2011

Journal of Environmental and Public Health

View full text Add to dashboard Cite

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 (34.2 ± 3.38 mL/kg/min) compared to (42.4 ± 2.03 mL/kg/min) compared to (42.4 ± 2.03 mL/kg/min) the youngest group (20–29 yrs). It was found to be negatively correlated with age (r = −0.55 and −0.33 for younger and older groups respectively) and directly associated with the body weight of the subjects (r = 0.57 – 0.68, P ≤ 0.001). Carriers showed maximum cardio respiratory capacity compared to other miners. Indian miners VO2max was found to be lower both compared to their abroad mining counterparts and various other non-mining occupational working groups in India.

show abstract

Section: Discussionsupporting

confidence: 87%

Maximum Aerobic Capacity of Underground Coal Miners in India

Saha

Dey

Samanta

et al. 2011

Journal of Environmental and Public Health

View full text Add to dashboard Cite

show abstract

“…It was revealed that the average V O2max of the younger and older groups was 38.13 ± 2.4 and 36.04 ± 2.3 ml/kg/min, which was lower than that for Indian industrial workers (46.6 ml/kg/min) [29]. The value was found to be lower than that for Australian (39.1 ml/kg/min) and Spanish (43.2 ml/kg/min) miners too [21,30].…”

Section: Heaviness Of the Job And Cardiovascular Fitness Of The Trammermentioning

confidence: 62%

“…These estimated values were used to assess RAS and were crossexamined against certain recommended criteria of physical strain that allowed a better evaluation of strain in relation to different parameters. The physical strain of the present underground tramming job in terms of HR could be compared with underground coalface miners of poorly mechanized mines in Austria [20] and metalliferous miners in Australia [21]. Exertion was also reported for drillers and diggers of Bulgarian opencast mines [22].…”

Section: Physical Strain Of the Tramming Jobmentioning

confidence: 99%

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

Dey

Samanta

Saha

2006

International Journal of Occupational Safety and Ergonomics

View full text Add to dashboard Cite

show abstract

“…(4,6,8,(27)(28)(29)(30)(31)(32) In particular, those studies that have measured core temperature responses report moderate but stable core temperature elevations for different work environments of various degrees of mechanization. (6,33) In the present study, we found that mean core temperature during the work shift increased and was maintained at comparable levels over the course of the work shift, with values ranging between 37.20 and 37.42 • C for the different jobs.…”

Section: Discussionmentioning

confidence: 99%

A Field Evaluation of the Physiological Demands of Miners in Canada's Deep Mechanized Mines

Kenny

Vierula

Mate

et al. 2012

Journal of Occupational and Environmental Hygiene

View full text Add to dashboard Cite

This study was conducted to evaluate the physical/mechanical characteristics of typical selected mining tasks and the energy expenditure required for their performance. The study comprised two phases designed to monitor and record the typical activities that miners perform and to measure the metabolic energy expenditure and thermal responses during the performance of these activities under a non-heat stress environmental condition (ambient air temperature of 25.8°C and 61% relative humidity with a wet bulb globe temperature (WBGT) of 22.0°C). Six common mining jobs were evaluated in 36 miners: (1) production drilling (jumbo drill) (n = 3), (2) production ore transportation (load-haul dump vehicle) (n = 4), (3) manual bolting (n = 9), (4) manual shotcrete (wet/dry) (n = 3), (5) general services (n = 8) and, (6) conventional mining (long-hole drill) (n = 9). The time/motion analysis involved the on-site monitoring, video recording, and mechanical characterization of the different jobs. During the second trial, continuous measurement of oxygen consumption was performed with a portable metabolic system. Core (ingestible capsule) and skin temperatures (dermal patches) were recorded continuously using a wireless integrated physiological monitoring system. We found that general services and manual bolting demonstrated the highest mean energy expenditure (331 ± 98 and 290 ± 95 W, respectively) as well as the highest peak work rates (513 and 529 W, respectively). In contrast, the lowest mean rate of energy expenditure was measured in conventional mining (221 ± 44 W) and manual shotcrete (187 ± 77 W) with a corresponding peak rate of 295 and 276 W, respectively. The low rate of energy expenditure recorded for manual shotcrete was paralleled by the lowest work to rest ratio (1.8:1). While we found that production drilling had a moderate rate of energy expenditure (271 ± 11 W), it was associated with the highest work to rest ratio (6.7:1) Despite the large inter-variability in energy expenditure and work intervals among jobs, only small differences in average core temperature (average ranged between 37.20 ± 0.22 to 37.42 ± 0.18°C) were measured. We found a high level of variability in the duration and intensity of tasks performed within each mining job. This was paralleled by a large variation in the work to rest allocation and mean energy expenditure over the course of the work shift.

show abstract

Fatigue in industrial workers under thermal stress on extended shift lengths

Cited by 32 publications

References 17 publications

Maximum Aerobic Capacity of Underground Coal Miners in India

Maximum Aerobic Capacity of Underground Coal Miners in India

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

A Field Evaluation of the Physiological Demands of Miners in Canada's Deep Mechanized Mines

Contact Info

Product

Resources

About