Year : 2007 | Volume
: 32 | Issue : 3 | Page : 225--226
Influence of psychosocial workplace factors on occurrence of musculoskeletal discomfort in computer operators
Dinesh Bhanderi, SK Choudhary, Lata Parmar, Vikas Doshi
Pramukh Swami Medical College, Karamsad, Anand, Gujarat, India
Dept. of Community Medicine, Pramukh Swami Medical College, Karamsad - 388 325, Anand, Gujarat
|How to cite this article:|
Bhanderi D, Choudhary S K, Parmar L, Doshi V. Influence of psychosocial workplace factors on occurrence of musculoskeletal discomfort in computer operators.Indian J Community Med 2007;32:225-226
|How to cite this URL:|
Bhanderi D, Choudhary S K, Parmar L, Doshi V. Influence of psychosocial workplace factors on occurrence of musculoskeletal discomfort in computer operators. Indian J Community Med [serial online] 2007 [cited 2019 Sep 23 ];32:225-226
Available from: http://www.ijcm.org.in/text.asp?2007/32/3/225/36838
The ever increasing use of computers in various fields has led to rise in musculoskeletal problems related to its operation. Apart from ergonomic design factors, number of psychosocial workplace factors have emerged that may influence the biomechanical load or the reactions to workplace stress. The National Institute for Occupational Safety and Health (NIOSH, 1997)  has outlined five psychosocial factors that are related to back and upper extremity disorders. i.e., job satisfaction, intensified workload, monotonous work, job control and social support. The present article, which is a part of broader cross sectional study done on 419 subjects who work on computer for varying period of time, helps to understand the relationship between various psychosocial workplace factors and occurrence of these problems.
Materials and Methods
The study was conducted in two talukas of Anand district, namely Anand and Petlad from May 2004 to January 2006. The sample size of 400 was calculated considering a prevalence of computer related health problems as 20%, as revealed in a pilot study. Forty was added to this figure assuming 10% nonresponse. Thus 440 was the final sample size.
Establishments and institutes in Anand and Petlad talukas, where computers are extensively used, were enlisted. These included banks, computer training centers and colleges running degree courses in computer applications. After seeking the permission of the heads of these institutes, all the staff and faculty members as well as final year students were enlisted. 440 subjects were selected randomly. 31 did not participated in the study, making the non-response rate 7.0%. Rest of the subjects (n=419) were asked to fill a pre-tested questionnaire, after obtaining their verbal consent. Other relevant information was gathered through personal inspection of workstation.
Results and Discussion
Mean age of the subjects who participated in this study was 25.04 years with a range of 18 to 55 years. 3/4 th of the subjects were young with age of 15 to 25 years and 279 (66.6%) were male. Majority i.e., 274 (65.4%) respondents started use of computers at young age of 16-20 years. 183 (43.7%) individuals were using computers for more than 5 years. About 41% of the respondents used to work on computers for 21 to 40 hours in a week.
The prevalence of self reported symptoms related to musculoskeletal discomfort (MSD) like tiredness, neck and shoulder stiffness, neck and shoulder pain, tingling/numbness in hands or fingers during or after work or at night perhaps interrupting sleep, hand or wrist pain, backache, headache, leg cramps, leg stiffness, numbness in ankles and feet, reduction in strength of hand and difficulty in grasping objects, ranged from 0.7% to 34.8%. Overall prevalence of any musculoskeletal discomfort was 75.2%. i.e., 315 out of 419 subjects reported any of these symptoms.
In our study, 118 (28.2%) respondent felt that their work place is overcrowded. A significantly higher proportion of these subjects reported MSD [Table 1]. Similarly, feeling of boredom at work-place was found to be associated with occurrence of MSD [Table 1]. A feeling of boredom at work was identified as important job stressor leading to increased number of health related complaints in computer operators in studies by Linton  and Smith et al .
176(42.0%) respondents felt that the workload at their work place is high. They were more likely to develop MSD related to computer use [Table 1]. A study by Pot et al. , found a correlation between high levels of perceived work load and MSDs.  Similar result was reported by Smith et al . 
There have been a range of studies supporting , and refuting  the hypothesis that computer work under time constraints as well as lack of social support from seniors and peers contributes to the development of MSD. In our study, tight deadlines had to be met by 203 (48.4%) subjects at their work place. No association was found between meeting such tight deadlines and any of the musculoskeletal symptoms [Table 1]. However, our study upholds the association between MSD and support from peers as well as from seniors at workplace [Table 2].
In our study, 180 (43%) subjects were employed in some job involving computer use. No significant association was found between job satisfaction and occurrence of MSD [Table 2]. Linton  did not find any correlation between psychosocial factors at work (including job demands and satisfaction) and MSD symptoms. However, contradictory were the findings in other studies. ,
In this study, no association was established between subject's perception regarding opportunities for promotion or development in the job and occurrence of MSD [Table 2]. Smith and Cohen found "concerns about career development" as one of the job stressors contributing to VDU operator problems, in their study on clerical operators. 
Thus, it can be concluded that, apart from ergonomic parameters, various psychosocial workplace factors need to be considered while designing a preventive intervention program for computer operators. But, as the review of literature shows equivocal results, a prospective study involving more objective measures may provide additional epidemiological evidence to establish impact of psychosocial work environment on computer related musculoskeletal disorders.
This study was funded by Charutar Arogya Mandal Medical Research Society, H.M.Patel Center for Medical Care and Education, Gokalnagar, Karamsad, Anand district, Gujarat.
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