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- Ergonomics SA : Journal of the Ergonomics Society of South Africa
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- Volume 21, Issue 1, 2009
Ergonomics SA : Journal of the Ergonomics Society of South Africa - Volume 21, Issue 1, 2009
Volume 21, Issue 1, 2009
Source: Ergonomics SA : Journal of the Ergonomics Society of South Africa 21 (2009)More Less
We are now into our third year of using the full peer-review system for all manuscript submissions. We take this opportunity to express our extreme gratitude to all our reviewers who have spent many hours evaluating manuscripts, sometimes even several versions of a manuscript. Without their valued input we would not be able to continue to improve the quality of submissions that finally make it into the journal. Once again we are able to provide you with a collection of articles presenting ergonomics studies from industrially developing countries; two papers from South Africa and one each from India and Nigeria.
Physiological response of emergency care students during a simulated extrication of a patient trapped in a light motor vehicle - implications for exercise testingSource: Ergonomics SA : Journal of the Ergonomics Society of South Africa 21, pp 2 –10 (2009)More Less
At present the metabolic cost of a simulated extrication of a patient trapped in a light motor vehicle by emergency care practitioners (ECP's) is not known. Twenty emergency care students performed i) a simulated (SIM) extrication of a patient trapped in a light motor vehicle, where maximum VO2, VE, HR and RER were measured. These results were compared to values measured during a maximal incremental treadmill test in the laboratory (LAB). VO2max (SIM) was significantly lower than VO2max (LAB) (35.9 ±8.1 vs. 43.5 ± 10.1 mlO2·kg-1.min-1 SIM vs. LAB; P=0.001). Similarly maximum VE during the simulated rescue was significantly lower to maximum VE in the laboratory setting (74.9 ±21 vs. 105.6 ±33 L.min-1 SIM vs. LAB; P=0.001). There was a significant correlation between maximum VO2 (r=0.57), maximum HR(r=0.63) and maximum VE(r=0.59) between the two tests, p<0.05. Extricating a patient from a light motor vehicle is physically demanding. The incremental treadmill laboratory test can be used to determine the minimum cardiovascular requirements for performing a light motor vehicle extrication.
Ergonomics study on Musculoskeletal Disorders among female agricultural workers of West Bengal, IndiaSource: Ergonomics SA : Journal of the Ergonomics Society of South Africa 21, pp 11 –22 (2009)More Less
Females are considered the backbone of the agricultural workforce. Female agricultural workers are compelled to carry out considerable amounts of manual and physically demanding tasks in the agricultural fields for long periods of time. This continuous and excessive work may cause the development of musculoskeletal disorders. For this study 50 female agricultural workers (17 to 20 years of age) were selected randomly from the villages of West Bengal. A modified Nordic questionnaire on feelings of discomfort was completed over a five-year period. From the analysis of the questionnaire it was observed that most of the subjects suffered discomfort, especially at the wrists, shoulders, hands, lower back and knees. Subjects suffered discomfort during work, after work and during sleep at night. By considering the results of the study it was revealed that spading is the most strenuous task.
Source: Ergonomics SA : Journal of the Ergonomics Society of South Africa 21, pp 23 –38 (2009)More Less
The construction industry entails a wide range of activities, which expose workers to unfavourable ergonomic challenges. There is a high prevalence of work-related musculoskeletal disorders (WMSDs), which are associated with the following actions: frequent bending; bending and twisting of the body; working above shoulder height;working below knee level; lifting; manual handling of heavy and irregular-sized loads, and adopting awkward work postures. The exploratory phase of a Doctoral study included a questionnaire survey that investigated the perceptions of architectural technologists regarding various design, procurement, and construction management issues relative to construction ergonomics. Furthermore, a training intervention afforded the researchers the opportunity to investigate the impact thereof through the conducting of a pre-seminar and post-seminar survey. The findings provide documentary evidence of the need for and the value of improving knowledge and the raising of awareness relative to construction ergonomics among architectural technologists. Furthermore, the findings highlight the value of training.
Source: Ergonomics SA : Journal of the Ergonomics Society of South Africa 21, pp 39 –50 (2009)More Less
A survey of ten selected anthropometric dimensions of two Nigerian major ethnic groups (Hausa and Yoruba) living in southwestern Nigeria was conducted. The aims were to obtain anthropometric data that could be useful for design purpose and to examine possible differences between the data of the two ethnic groups and likely implications on equipment and workplace designs. A total of 306 subjects took part in the study. The results indicate that the Hausas generally have larger dimensions than their Yoruba counterparts. The differences in the dimensions were found to be statistically significant for height, overhead reach, popliteal height, sitting height and arm span (for males) and height, overhead reach, head height, hand breadth at the thumb, knee height, popliteal height, and arm span for the females at p < 0.05. The need to design equipment and workplaces taking into consideration the data of the ethnic groups was emphasised. Similarly, the importance of having a larger anthropometric database for the whole Nigerian population was also stressed.