Wednesday, November 4, 2015

Weeding ...a sternous farm activity

WEEDING

the research results of ergonomic evaluation of weeding activity......
Ø Mean age of rural woman collecting weeds was 29.5 years, measuring body weight and height as 50 kg and 155.5 cm., respectively having mesomorph body (60.0%). Aerobic capacity was found to be 1.79 l/min having high average physical fitness. A significant positive correlation existed between VO2 max and body weight.
Ø Traditional kasola was used to remove weeds by majority of respondents (80.0%) and spent nearly 4 hours covering a distance of 4 kms per day on weeding.
Ø Heart rate increased in woman while collecting weeds (104.4bpm). Increase was more in older age group varying from 97.8 bpm to 122bpm. A woman showed energy expenditure as 6.79 Kj/min for weeding. Direct relationship existed between heart rate and energy expenditure.
Ø Physiological cost of work of a woman doing weeding was 66.0 bpm. Physiological workload of the woman while collecting weeds was graded as heavy and moderately heavy.
Ø Grip strength increased upto 6.8% after the start of the activity whereas it decreased up to 14.4% at the end of the activity. Increase in grip strength was more in lower age group (7.0%) whereas the decrease was more in upper age group. Bending and squatting posture was adopted for about 35 to 38 times while collecting weeds. More deviation was observed in lumbar region (14.4o) than the cervical region (2.1o) during collection of weeds .A woman reported severe to moderate pain in upper, mid and lower back, fingers and shoulders. Mild pain was reported in lower extremities.
Ø Mean temperature, relative humidity and noise was recorded as 42.2oC, 37.1% and 47.3db, respectively.
here are the power point presentaion....


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