Abstract
Ergonomics is system design compressed of man-machine and environment relationship to bring about some output against some given inputs considering different physical, anatomical, physiological, and psychological limits of human being. Based on different workloads (N) and speed (rpm), the experiment was conducted on MONARK 828E Ergometer, to evaluate heart rates of different age groups with variable weights and heights. The farm workers (both men and women) of 20-30 years age group have developed a maximum working heart rate as compared to other age groups of 31-40 and 41-50 years. The energy expenditure rate (EER) for all the farm workers obtained were graded as ‘moderately heavy’. The body mass index (BMI) of age groups 20-30 and 31-40 years were considered as ‘Normal’ and 41-50 were considered as ‘Obese Grade I’. The ponderal index (PI) of all age groups, that is, 20-30, 31-40, and 41-50 years were ‘Ectomorph’ in nature. Further, statistical analysis was performed to develop regression based prediction equation for EER using age, weight, height, heart rate, and maximal oxygen uptake (VO2max) as input variables. Key word: Ergonomics, heart rate, energy expenditure, ponderal index, body mass index.
Highlights
Ergonomics is the scientific study of the relationship between man and his working environment
The productivity of any work environment depends on the quality and complexity of the tools being used, and on the human being involved towards operating the tool and his work environment (Agrawal and Satapathy, 2006)
This experimental analysis was done at Instrumentation Lab in the campus of College of Agricultural Engineering, Bapatla, Andhra Pradesh (India) using Monark cycle Ergometer 828E (Figure 1)
Summary
Ergonomics is the scientific study of the relationship between man and his working environment. It is concerned with ways of designing machines, operations, and work environments so that they match human capabilities and limitations. The productivity of any work environment depends on the quality and complexity of the tools being used, and on the human being involved towards operating the tool and his work environment (Agrawal and Satapathy, 2006). While designing the machine human take almost care on the technical part of the machine, but they do forget about the operator. It is essential to design the work environment based on the anthropometric limitations of the operations. Once upon a time this was a necessity: the struggle for survival
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