|Year : 2019 | Volume
| Issue : 2 | Page : 78-84
Work-related musculoskeletal disorders of tribal female Sal leaf platemakers: An unperceived issue
Sasangbaha Mandi1, Piya Majumdar1, Subhashis Sahu1, 2
1 Department of Physiology, Ergonomics and Occupational Physiology Laboratory, University of Kalyani, Kalyani, West Bengal, India
|Date of Submission||02-Aug-2019|
|Date of Decision||19-Sep-2019|
|Date of Acceptance||06-Dec-2019|
|Date of Web Publication||09-Jan-2020|
Dr. Subhashis Sahu
Department of Physiology, Ergonomics and Occupational Physiology Laboratory, University of Kalyani, Nadia, Kalyani - 741 235, West Bengal
Source of Support: None, Conflict of Interest: None
BACKGROUND: Industrialization and globalization produce a threat to the traditional livelihood of the indigenous population. A large number of tribal people in Asia are engaged in small-scale forest-based industries. Sal leaf platemaking is a common occupation among most tribal women in the Eastern part of India. However, occupational health problems of the women engaged in this job are hardly reported so far.
MATERIALS AND METHODS: This study was carried out on 400 female workers engaged in Sal leaf platemaking units and 100 tribal female homemakers were considered as a referent. Modified Nordic Questionnaire and body part discomfort rating scale were applied for finding reported pain. The working postures were evaluated by rapid entire body assessment, rapid upper limb assessment, and Ovako Working Posture Analysis System (OWAS) methods.
RESULTS: The findings emphasize that the Sal leaf platemakers complaints about different musculoskeletal problems. They have to go to the nearby forest (2–3 km far) by foot for 3–4 days per week for collecting the Sal leaves and carry it to their home for making of plates. They spend 4–6 hour daily in making Sal leaf artifacts. The maximum discomforts felt were reported in the lower back, hips, neck, leg, and hand during working hours and also some after the work. The postural analysis shows that most of the posture adopted during Sal leaf platemaking requires corrective measures.
CONCLUSION: Postural stress is a causative agent for work-related musculoskeletal disorders. Therefore, to reduce the problems faced by them, some low-cost ergonomic interventions such as working bench, proper work-rest cycle, and back support should be formulated and implemented for the betterment of their daily livings.
Keywords: Ergonomics, musculoskeletal disorder, occupational health, postural analysis, tribal women
|How to cite this article:|
Mandi S, Majumdar P, Sahu S. Work-related musculoskeletal disorders of tribal female Sal leaf platemakers: An unperceived issue. BLDE Univ J Health Sci 2019;4:78-84
|How to cite this URL:|
Mandi S, Majumdar P, Sahu S. Work-related musculoskeletal disorders of tribal female Sal leaf platemakers: An unperceived issue. BLDE Univ J Health Sci [serial online] 2019 [cited 2021 Jan 22];4:78-84. Available from: https://www.bldeujournalhs.in/text.asp?2019/4/2/78/275434
People has been dependent and inhabitant of forest since ages provides a great example of symbiosis. India has the largest population of tribal people (8.6% of the total population as per the 2011 census) and a major portion of them are an inhabitant of forest area. Tribal people are greatly dependent on forest for various needs whose livelihood is based on forest products such as fuelwood, fodder and small timber, Sal leaves, Kendu leaves, Sabai grass, Mahua seeds, Bahara, Amalaki, Haritaki, gum, honey, etc. There is strong evidence that, in general, Kharwar tribes and other tribal populations of India were experiencing serious to critical nutritional stress.
Sal leaf platemaking is a common occupation of tribal women in West Bengal, India. They have to go to the nearby forest (2–3 km far) by foot for 3–4 days/week to collect the green Sal leaves. They spend 4–6 hour daily in making Sal leaf architects. The task in Sal leaf platemaking units comprises collecting Sal leaves, stitching of leaves and making plates, drying of plates, packaging of the plate, and finalizing the shape of the plate with a machine. Apart from this occupational work, the female also performs other household works.
Musculoskeletal disorders (MSDs) are the most important cause of temporary work impairment in the world and together with mental disorders; they account for the majority of permanent disability persons, especially in unorganized workers. Work-related MSDs (WRMSDs) are caused by a range of physical, individual, and psychological risk factors.,
Lower back pain and neck pain are categorized as WRMSDs, which are commonly experienced among workers., Back and lower limb disorders occur disproportionately among truck drivers, wore house workers, airplane baggage handlers, construction trades nurses, nursing aides, and other patient-care workers, and operators of cranes and other large vehicles.
A large number of tribal people are employed in brickmaking industries. The incidences of work-related musculoskeletal problems are substantial due to awkward postures and heavy manual material handling (MMH). Similar observations were made by among construction laborers working in the unorganized sector in West Bengal, India.
A study on the MSD among the male handloom weavers showed that they suffered from pain in different body parts. The maximum discomfort felt in the lower back and knee, caused due to adopting awkward sitting postures for a long time, repeated movements of the limbs, altogether put the workers into stress. Many researchers have pointed out the close relationship between working postures and the prevalence of musculoskeletal symptoms., Unfortunately, there is a dearth of studies regarding the occupational health problems in the tribal people engaged in different unorganized sectors.
To evaluate the current scenario of the tribal female worker, the present study aims at identification of pain or discomfort felt in different body parts of the tribal female workers according to the activities they are engaged in while making Sal leaf plate and identification of the risk levels of different awkward working posture which will be dealt in the following sections.
| Materials and Methods|| |
Four hundred adult tribal female workers engaged in Sal leaf platemaking for having at least 2 years of experience were randomly considered as the study participants and 100 tribal females, mainly homemakers, were considered as the referent. Exclusion criteria were those who were suffering from chronic diseases had undergone any surgery within 6 months or not willing to cooperate with the study protocol.
Height and weight of individuals were measured by properly calibrated anthropometric rod and digital weighing machine, respectively. From those data, body mass index (BMI) and body surface area were calculated.,
The modified Nordic Questionnaire was applied to tribal female Sal leaf platemaking workers and homemakers for the assessment of musculoskeletal problems.
Assessment of discomfort feeling
10-point body part discomfort scale was used for the measurement of discomfort feeling in different body parts during occupational work.
Working posture analysis
Working postures of Sal leaf platemaking workers were evaluated by the Ovako Working Posture Analysis System (OWAS) method, rapid upper limb assessment (RULA) method,, and rapid entire body assessment (REBA) method, and accordingly, scoring was done for further investigation.
The data were expressed as the mean ± standard deviation to evaluate statistical significance for physical characteristics. Differences in the questionnaire responses between the working groups were evaluated using the Chi-square test where P < 0.05 was used as the limit of significance. A hypothesis test for proportions was to analyze the tendency of deviation of the outcome.
The study was conducted following the Helsinki Declaration. Prior to the experiment, written consent was obtained from the participants and the study protocol was approved by the Department of Physiology, University of Kalyani.
| Results|| |
[Table 1] represents the physical parameters of Group 1 (i.e., the tribal Sal leaf platemaking female workers) and Group 2 (i.e., the tribal homemakers). As observed from the following table, we can conclude that most of the female workers belong to the middle-age group and that the Sal leaf platemaking workers had comparatively lower BMI to that of referent homemakers.
|Table 1: Physical characteristics of tribal female Sal leaf platemaking workers and homemakers|
Click here to view
The following [Table 2] represents the reported pain/discomfort felt by the Sal leaf platemaking workers and the referent group during the work and post the working schedule which demarcated that majority of them felt pain after work.
Responses of work-related discomfort or pain in different body parts of Sal leaf platemakers and homemakers have been presented in [Table 3]. Most complaints of discomfort feeling by two groups have significantly differed at P < 0.05. These perturbances in different body parts among Sal leaf platemaking workers are thought to be the cause of operation done by awkward sitting posture for a prolonged time. Hence, these causative factors may be affecting their health. They are thereby suffering from the musculoskeletal related disturbances in the neck, wrist, upper back, lower back, hip, and knee from these repetitive stressful precise works.
|Table 3: Responses of discomfort/pain in different body parts among tribal female Sal leaf platemaking (i.e., Group 1) and homemakers (i.e., Group 2)|
Click here to view
[Figure 1] represents the prevalence of pain among the female workers and the counter referent group for the previous 7 days which demarcated the extensiveness of pain at the neck, lower back, hip, and knee.
|Figure 1: Prevalence of pain among different body parts of Sal leaf plate making workers (i.e. Group 1) and homemakers (i.e. Group 2) for past 7 days represented as percentage|
Click here to view
Association of the feeling of pain or the absence of feeling of pain between platemaking workers and homemakers on the basis of their pain prevalence for the past 1 year is given in [Table 4]. From the statistical analysis by means of the Chi-square test, it is clear that maximum discomfort responses were significantly higher in the neck, wrist, upper and lower back, hip, knee, and ankles of Sal leaf platemakers. This discomfort may be attributed to continuous forward bending, moving, and awkward sitting posture exposed for a prolonged time.
|Table 4: Responses of discomfort/pain in different body parts among tribal female Sal leaf platemaking (i.e., Group 1) and homemakers (i.e., Group 2) on the basis of their pain prevalence for the past 1 year|
Click here to view
[Table 5] depicts the significant association between the MSD complaints of the Sal leaf platemaking female workers with the BMI at regions such as the neck, shoulder, wrist, lower back, and hip. A value <18.5 kg/m2 signifies that the subjects are suffering from chronic energy deficiency (The World Health Organization, 1998 Guidelines), as has been indicated.
|Table 5: The relationship between the complaint regarding musculoskeletal disorders and body mass index|
Click here to view
The postural stress among the female Sal leaf plate workers due to varied adopting postures while working had been depicted in [Table 6]. This risk level was measured by OWAS, REBA, and RULA standard methods. This assessment had shown that most of the Sal leaf platemaking workers experience some strain and were at greater risk of developing postural deformities for which actions need to be implemented in the near future.
|Table 6: Analysis of working posture of tribal Sal leaf platemaking workers|
Click here to view
| Discussions|| |
In India, the importance of women in tribal society is unique than in any other social group. The tribal females work in the agricultural field during the agricultural season as a daily laborer. They perform different heavy work such as cutting of crops, harvesting, collecting crops from land to home, and threshing. Their involvement has also been found in various other sectors.
In this cohort study, we have considered tribal female workers engaged in the Sal leaf platemaking activity for their livelihood of different districts of West Bengal, India. Initial investigation showed that they have to go to the nearby forest for collecting Sal leaves that too for 3–4 days/week and carry it back to their home and finally uses it for ultimate product formation, i.e., Sal plate. These plates are purchased by the trader.
The questionnaire study showed that most of the tribal females who are engaged in the Sal leaf platemaking job suffered from discomfort and pain feeling in different body parts that may be considered as a pro indicator for the MSD. The most complaint about discomfort was raised in the hip, wrist, neck, and lower back. The main causation of this malaise may be due to the awkward sitting posture for a prolonged time without taking proper rest and improper work-rest cycle. Some characteristics of such activity had revealed that there exist repetitive movements, sustained posture, and incorrect work position which may promote MSD.
From the postural analysis, it was evident that most of the postures adopted during the Sal leaf platemaking activities needed change immediately. On the other hand, the amount and quality of forwarding bent work postures influence the comprehensive force on the vertical discs and erector spine muscles as evident by a study. Another pronounced recent study on work-related musculoskeletal problems among traditional and Jacquard handloom weavers had concluded that due to the prolonged awkward working posture, they also do complaints of body discomfort and pain which is a clear indicator for the development of musculoskeletal problems.
The present study depicted that the health condition of the Sal leaf platemakers was compromised to a greater extent and it needs sooner implementation measures. Some low-cost ergonomic interventions such as working bench, intermittent breaks, and back support may reduce the problem faced by the female workers to a greater extent for the betterment of life.
| Conclusion|| |
Since tribal women are suffering from poor economic conditions and malnutrition, they earn their livelihood. They are indeed hard working. Apart from household duty, they are involved in different strenuous works to run the family. Sal leaf platemaking tribal women workers were suffering from various work-related discomfort in their body parts, mainly MSD, because of their continuous awkward working posture due to in-proper work station and working environment. Majorly discomforts were observed in the lower back, neck, wrist, hips/buttock, and knees. Improper work schedule as well as poor working time and nonadjustable work station imparts a negative impact on them. Working posture analysis score showed that some of the postures adopted during Sal leaf platemaking required corrective maneuver. Therefore, it can be recommended to implement some low-cost ergonomic intervention such as working bench, intermittent breaks and back support will improve the quality of life of them.
Authors would like to acknowledge all the subjects for their kind cooperation for the study.
Financial support and sponsorship
SM would like to acknowledge NFST (Ministry of tribal affairs, Government of India) and SS acknowledge partial financial support from PRG, DST-PURSE II of University of Kalyani to carry out this research work.
Conflicts of interest
There are no conflicts of interest.
| References|| |
Saha M, Sengupta S. Symbiotic relationship between forest and tribe: A case study of Santal tribe of Jaypur forest Bankura district West Bengal India. Trans Inst Indian Geograph 2014;36:235-46.
Dolui G, Chatterjee S, Chatterjee ND. The importance of non-timber forest products in tribal livelihood: a case study of Santal community in Purulia district, West Bengal. Indian J Geograp Environ 2014;13:110-20.
Dey M, Sahu S. Ergonomic survey of leaf plate making activity of tribal women. In: Gangopadhyay S, editor. Proceedings of International Ergonomics Conference, HWWE. Ergonomics for Everyone; 2009. p. 433-40.
Jaiswal A. Nutritional and health status evaluation of tribes of Uttar Pradesh: An anthropological dimension. Glob J Archaeol Anthropol 2018;6:42-7. [Doi: 10.19080/GJAA.2018.06.555685].
Goswami S, Sahu S. Study of musculoskeletal disorders among nurses in different wards in Indian hospitals. J Hum Ergol 2017;46:21-5.
Kuorinka I. The influence of industrial trends on work related musculoskeletal disorders (WRMSDs). Int J Ind Ergonom 1998;21:5-9.
Sett M, Sahu S. Study on work load and work-related musculoskeletal disorders amongst male jute mill workers of West Bengal, India. Work 2012;42:289-97.
Malchaire JB, Roquelaure Y, Cock N, Piette A, Vergracht S, Chiron H. Musculoskeletal complaints, functional capacity, personality and psychosocial factors. Int Arch Occup Environ Health 2001;74:549-57.
Durlov S, Sett M, Sahu S. A study on the development of work stress among two different groups of handloom weavers of West Bengal. Indian J Physiol Allied Sci 2014;68:10-7.
Pope MH, Andersson GB, Frymoyer JW, Chaffin DB, editors. Occupational Low Back Pain: Assessment, Treatment and Prevention. St. Louis: Mosby-Year Book, Inc.; 1991.
Sett M, Sahu S. Ergonomic study on female workers in manual brick manufacturing units in West Bengal India. Asian Pac Newslett Occup Health Saf 2008;15:59-60.
Sahu S, Chattopadhyay S, Basu K, Paul G. The ergonomic evaluation of work-related musculoskeletal disorders among construction labourers working in unorganized sectors in West Bengal, India. J Hum Ergol (Tokyo) 2010;39:99-109.
Durlov S, Sett M, Sahu S. Comparative study of work-related musculoskeletal problems between traditional handloom and Jacquard loom weavers. J Environ Physiol 2015;7:20-8.
Sahu S, Chatterjee A. Evaluation of working posture and work-related musculoskeletal symtoms among carpenters of West Bengal, India. In: Parimalam P, Premalatha MR, Bhanumati P. Ergonomics for Enhanced Productivity held in Tamilnadu Agricultural University. New Delhi: Excel India Publishers; 2013. p. 27-35.
Maity SG, Sahu S. Evaluation of postural stress among soil diggers and soil carriers in brick making sectors in west Bengal. J Environ Physiol 2015;7:34-46.
Weisell RC. Body mass index as an indicator of obesity. Asia Pac J Clin Nutr 2002;11 Suppl 8:681-4.
Banerjee S, Sen R. Determination of the surface area of the body of Indians. J Appl Physiol 1955;7:585-8.
Kourinka I, Joshnson B, Kilbom A, Vinterberg H, Beiring-F BB, Anderson G. Standardised Nordic questionnaires for the analysis of musculoskeletal systems. Appl Ergon 1987;18:233-7.
Reynolds JL, Drury CG, Broderick RL. A field methodology for the control of musculoskeletal injuries. Appl Ergon 1994;25:3-16.
Karhu O, Kansi P, Kuorinka I. Correcting working postures in industry: A practical method for analysis. Appl Ergon 1977;8:199-201.
McAtamney L, Nigel Corlett E. RULA: A survey method for the investigation of work-related upper limb disorders. Appl Ergon 1993;24:91-9.
Hignett S, McAtamney L. Rapid entire body assessment (REBA). Appl Ergon 2000;31:201-5.
Das D, Das A. Statistics in Biology and Psychology. 4th
ed. Calcutta: Academic Publishers; 2004.
World Health Organization. Obesity: Preventing and Managing the Global Epidemic: Report of a World Health Organization Consultation on Obesity. Geneva: World Health Organization; 1997. p. 3-5.
Leskinen TP. Evaluation of the Load on the Spine Based on a Dynamic Biomechanical Model, Electromyography Activity of Back Muscles and Changes in Stature, Dissertation. Tampere: Tampere University of Technology; 1993.
Durlov S, Saha A, Mandi S, Sahu S. An ergonomic survey of health status of the handloom weavers. Int J Sci Res Biol Sci 2018;6:196-202.
[Table 1], [Table 2], [Table 3], [Table 4], [Table 5], [Table 6]