Research Article

Relationship Between Quality of Life and Pattern of Musculoskeletal Disorders Among Pepper Sellers in Ondo Town, Ondo State

Aanuoluwapo Deborah Afolabi1, Toafik Oluwasegun Afolabi1,*, Mayowa Mark Olapade2, Bibiire Segun Damola2, Boluwatife Olasehinde2, Ayomide J Akinyemi2, Ojo Victor Oluwaseyi2, Abiodun Jeremiah Olaniyi2, Adesina Olalekan S2, Adeoluwa Isaac Oni2 and Gift Onyedika Chukwuoti3

1University of Medical Sciences, Ondo State, Nigeria
2University of Medical Sciences Teaching Hospital, Ondo State, Nigeria
3University of Port Harcourt Teaching Hospital, Rivers State, Nigeria

Received Date: 29/11/2024; Published Date: 04/02/2025

*Corresponding author: Toafik Oluwasegun Afolabi, University of Medical Sciences, Ondo State, Nigeria

DOI: 10.46998/IJCMCR.2025.48.001199

Abstract

Background: Musculoskeletal Disorders (MSDs) are a common occupational health issue affecting various professions, including pepper sellers. Despite their prevalence, there is limited information on the pattern of MSDs and their impact on the Quality of Life (QoL) among pepper sellers in Ondo town.

Aim of the Study: This study aimed to report the pattern of Musculoskeletal Disorders (MSDs) among pepper sellers, assess their Quality of Life (QoL). It determined the relationship between MSDs and QoL, also, to find the relationship Between Pain Intensity and Quality of Life of Pepper Sellers in Ondo town.

Materials and Methods: A cross-sectional study was conducted involving 390 respondents from various shops in Ondo town that were conveniently recruited. The Standardized Nordic Musculoskeletal Questionnaire, Visual Analogue Scale, and Short Form Health Survey (SF-12) were used to assess the presence of musculoskeletal symptoms, pain intensity, and Quality of Life (QoL) respectively. Data collection included direct questions on pain in the previous 12 months, demographic data, and health or occupation-related factors. Descriptive statistics of mean, standard deviation, frequency, and percentages were used summarized the socio-demographic and physical characteristics of the respondents. Inferential statistics of spearman rank correlation was used to determine the relationship between musculoskeletal pain and QoL, with an alpha level set at p < 0.05.

Results: Results indicated that 97.9% of the participants had MSD symptoms in at least one body region, with the lower back (49.2%) and knees (35.9%) being the most affected regions.

The mean value of quality of life-physical and mental domains of the participants were 206.118 ± 53.3634 and 388.462 ± 44.7523.  Additionally, 44.4% of the participants were aged 31-40 years, and most of them (69.2%) had a secondary school education while majority 47.9% had mild pain. There was no relationship between the pattern of musculoskeletal disorders and quality of life among pepper sellers in Ondo town (p=>0.05) but there was relationship between MSDs at the ankle/feet with the QOL-mental domain (p=<0.05). Also, there was relationship between pain intensity and quality of life among pepper sellers in Ondo town (P=0.001).

Conclusion: The high prevalence of MSDs among pepper sellers in Ondo town and there was no relationship between MSDs and Quality of life among pepper sellers in Ondo town expect with ankle/feet pain.

Keywords: Musculoskeletal disorders (MSDs); Pepper sellers; Quality of life (QoL); Pain intensity

Introduction

Musculoskeletal Disorders (MSDs) have been identified as the most expensive occupational health disorder and leading work-related health concern in developed as well as developing countries. It accounts for over 30% of all injuries requiring time away from work [1]. Musculoskeletal disorders (MSDs) have been defined as injuries affecting muscles, tendons, ligaments, joints, nerves, and blood vessels, and have been reported to be the major causes of work-related disability [2,3]. The global burden of disease study in 2017 indicated that MSDs increased the risk of disability by 50% from 1990 to 2017 globally [4]. The current prevalence and distribution of MSDs are widespread in many countries, generating substantial costs in terms of lost workdays, medical expenses, and impact on health-related quality of life [5]. Additionally, in low- and middle-income countries, they account for 19% of all disability-adjusted life years lost due to disability [6].

Several studies have identified various risk factors and patterns for developing MSDs. In a study by Hoy et al [7]. increasing age, lower educational levels, and the presence of other diseases were reported to be strongly associated with an increased risk of developing MSDs. Other commonly reported factors associated with the increase in incidence and prevalence of MSDs among workers include awkward working postures, repetitive use of body parts, prolonged standing, demographic characteristics, poor lifting techniques, and the absence of effective work injury prevention programs [8,9]. Previous studies on MSDs have indicated that lower back, neck, shoulder, forearm, and hand are the most common body parts that suffer from MSDs [10]. The observed pattern of MSDs among agricultural service workers predominantly occurs in the low back; nevertheless, they are often more generalized in nature [11]. Furthermore, the European Agency for Safety and Health at Work has reported that in the European Union, the relative prevalence rate of MSDs is highest among service workers, and shop and market sales employees [12]. Additionally, working for a long time in a sitting position or maintaining a static posture for a prolonged period has been identified as one of the major causes of occupational diseases [13]. Also, previous studies have indicated that constant sitting affects mostly the neck and lower back region [14]. In a study by Davis et al [15], it was reported that musculoskeletal discomfort and pain in different body regions are common complaints among individuals whose occupations are characterized by repetitiveness and monotonous work. Furthermore, neuromuscular fatigue and discomfort in the shoulder, low back, and neck region have been commonly reported among sales workers [16]. Additionally, cumulative local muscle fatigue has been strongly associated with increased risk potential for MSDs [17]. Pain has a great impact on individuals and society through the associated disability, comorbidity, loss of job, healthcare needs, and quality of life [18].

The impact of Musculoskeletal Disorders (MSDs) in the general population has been associated with disability and assessed by measures of Quality of Life (QoL) [19,20]. Consequently, Quality of Life (QoL) has become an important indicator of the burden of musculoskeletal disorders (MSDs) [21]. Additionally, surveys from the industrialized world revealed a high prevalence of MSDs and their negative effect on the perceived QoL, as compared with other common chronic conditions [22]. Most investigations examining the potential drop in QoL induced by musculoskeletal disorders have compared patients with established disease with healthy controls in a cross-sectional design [23]. Thus, quality of life has become an important measure when studying health status and health outcomes [24].

Job performance in certain occupations often requires specific postures and continuous repetitive movements often conducted with forceful exertions that may lead to musculoskeletal disorder (MSDs) symptoms [25]. Saleswomen, by the nature of their job, are often required to work in a sitting position for a prolonged period with little or no physical activity, and they are affected by MSDs because their body muscles are forced to maintain a static posture for a long period at working time [26]. In addition, sales workers face substantial stress, including time constraints, mental pressure, and physical demands, especially with repetitive movements, thereby making the job description of a saleswoman entail job-related risk factors that cause MSDs symptoms [27]. Studies have been conducted to explore the relationship between the pattern of musculoskeletal disorders and Quality of Life (QoL) among saleswomen in developed countries. However, there is evidence on the burden of MSDs on market women in developing countries, like Nigeria. Hence, this study aims to explore the pattern of musculoskeletal disorders among pepper sellers in Ondo town, Ondo State, and its impact on their Quality of Life (QoL).

Aims

This research aimed to report the pattern of musculoskeletal disorders, assess the Quality of Life (QoL) and the pain intensity.  Also, determined the relationship between the pattern of musculoskeletal disorders and quality of life among pepper sellers in Ondo town.  Then, determine the relationship between pain intensity and quality of life among pepper sellers in Ondo town.

Materials and Methods

A cross-sectional study involved 390 respondents conveniently recruited from various shops in Ondo town. The Standardized Nordic Musculoskeletal Questionnaire, Visual Analogue Scale, and Short Form Health Survey (SF-12) were used to assess the presence of musculoskeletal symptoms, pain intensity, and QoL, respectively. Data collection included direct questions on pain in the previous 12 months, demographic data, and health or occupation-related factors. Descriptive statistics, including mean, standard deviation, frequency, and percentages, summarized the socio-demographic and individual characteristics of the participants. Inferential statistics of spearman rank correlation was used to determine the relationship between musculoskeletal pain and QoL. Also, Pearson correlation was used to determine the relationship between pain intensity and QOL. Alpha level set at p < 0.05.

Results

Characteristics of the Study Group
Majority of the respondents (44.4%) were between ages 31-40, followed by (31.5%) who were between the ages 41-50 years. Most of the respondents (69.2%) had secondary academic qualification and most of them (66.4%) had 3-4 years’ work experience, Majority (89.7%) of the respondents were married and Majority (53.8%) had their location at Iyalaje Market as presented in Table 1.

Table 1: Socio-Demographic Characteristics of the Research Group.

The mean weight of the respondents was (67.182 ± 6.2039 kg), the mean height was 1.75 ± 1.6405 m) and the body mass index was (24.954 ± 1.9789 kg/m2). The mean value for Quality of life-physical domain was 206.118 ±53.3634 and the mean value for Quality of life-mental health domain was (388.462 ± 44.7523).

The pattern of musculoskeletal disorders for the majority of the respondents were high in the 12 months for the neck (57%), elbow (68%), Upper back (70%), and the pattern of musculoskeletal disorders were low for shoulder (69%), wrist/hand (87.9%), upper back (82.1%), low back (50.8%), and knees (87.7%). The pattern of musculoskeletal for the majority of the respondents were low in the 7 days duration. The mean value for the quality of life among the respondents for the physical domain was (206.118 ± 53.3634), and mental health domain (388.462 ± 44.7523).

The pain intensity among the respondents was highest (47.9%) with the VAS of 3, (23.3%) with the VAS of 4.

Table 2: Participants’ Profile on physical characteristics and quality of life.

Table 3: Pattern of MSDs among Pepper Sellers in Ondo Town in the Last 12 Months and 7 Days.

Table 4: Pain Intensity Among Pepper Sellers in Ondo Town.

Table 5: Relationship between the Pattern of MSDs and Quality of Life among Pepper Sellers in Ondo Town.

Table 6: Relationship between Pain Intensity and Quality of Life of Pepper Sellers in Ondo Town.

Discussion

The objectives of this study were to describe the pattern of Musculoskeletal Diseases (MSDs) among pepper sellers in Ondo town, evaluate their Quality of Life (QoL), and investigate the correlations between MSDs, QoL, pain severity, educational background, and Body Mass Index (BMI).

The occurrence of musculoskeletal problems among market workers corresponds with many prior studies [28-30]. Similar to the results of Tian et al [30], which found that 83% of grocery workers reported symptoms, almost all participants (97.9%) reported discomfort or pain in at least one body location over the previous year. Schneider et al [31] did, however, indicate a lower prevalence, which may be because the two-month symptom evaluation period was shorter than the 12-month period in our study.

The most common Musculoskeletal Disorder (MSD) seen among pepper vendors was low back pain, which aligns with previous research conducted on grocery workers [30,31]. The knees, shoulders, upper back, elbows, hips/thighs/buttocks, and neck exhibited a high incidence of the condition, while the ankles/feet and wrists/hands had a lower prevalence. This pattern indicates that the physical requirements of selling pepper have a considerable effect on the musculoskeletal well-being of these workers.

Curiously, almost 12% of the subjects had foot pain, which is different from the findings of Tian et al [30] and Schneider et al [31], who observed slightly lower rates of occurrence. Nevertheless, in their study, Dalager & Sjøgaard [32] identified foot pain as the second most prevalent musculoskeletal disorder (MSD), underscoring the variation in MSD occurrence among various research groups and demographics.

Repetitive tasks, such as working as a cashier, are frequently linked to musculoskeletal disorders (MSDs) in the hand and wrist [9,33]. These disorders are particularly common among individuals who engage in strong hand movements [34]. Contrary to expectations, this study revealed a reduced occurrence of hand/wrist symptoms among those who sell peppers, potentially attributed to variations in job responsibilities in comparison to cashiers.

There was no relationship between MSDs and Quality of life among pepper sellers in Ondo town.

There was significant relationship between ankle/feet pain and quality of life-Mental domain among pepper sellers in Ondo town.

There was significant relationship between pain intensity and quality of life-Mental domain among pepper sellers in Ondo town.

Conclusion

The high prevalence of MSDs according to body parts among pepper sellers in Ondo town especially at the low back and knee joint. Also, there was no relationship between MSDs and Quality of life among pepper sellers in Ondo town expect with ankle/feet pain. There was significant relationship between pain intensity and quality of life-Mental domain among pepper sellers in Ondo town.

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