Evaluation of Different Sitting Postures of Rural Primary School Boys in the Classroom
- *Corresponding Author:
- Prakash C Dhara
Department of Human Physiology with community Health
Midnapore-721 102 W.B, India
E-mail: [email protected]
Received Date: May 14, 2012; Accepted Date: June 20, 2012; Published Date: June 27, 2012
Citation: Dutta S, Dhara PC (2012) Evaluation of Different Sitting Postures of Rural Primary School Boys in the Classroom. J Ergonomics 2:105. doi: 10.4172/2165-7556.1000105
Copyright: © 2012 Dutta S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The pupils are involved in reading and writing for a long duration (4-5 hrs) during attending the school. In many of the rural primary schools in India, students are not provided with bench and desk and they used to sit on the floor during attending the class. The present study was aimed to evaluate different postures adopted in the classroom. The posture selected for this study were sitting on the bench, sitting on the floor by folded legs (Indian traditional posture), and sitting on the floor with stretched legs. The study was carried on ten rural primary school children (n=106) between the age groups 6 to 10 years. The musculoskeletal disorders, EMG (Electromyography) of back and shoulder muscles, whole body center of gravity (CG), body joint angles, and base contact area of the student were recorded. During sitting on the bench, the back region was much more affected than sitting on the floor with folded knees. The location CG during sitting on the floor was shifted to the base from the reference position. The study of body joint angle revealed that the neck, shoulder and elbow angles had lesser deviation from that of reference posture during sitting on the floor than that in sitting on the bench. It was also observed that the EMG voltages during sitting on the floor had significantly lower values (p<0.05) than that in sitting on the bench. Base contact area in case of sitting on the floor was much greater than that in sitting on the bench. It was concluded that Indian traditional sitting posture, that is; sitting on the floor with folded knees had lesser muscular stress and greater stability in posture than sitting on the bench among the primary school children.