Review Article
Occupational Health & Ergonomics

Musculoskeletal Disorders and Their Relationship with Physical Activities Among Office Workers: A Review

Summary

Musculoskeletal disorders (MSDs) represent one of the most significant occupational health challenges facing the modern workforce. With the ongoing shift towards knowledge-based economies and computer-dependent work, an increasing proportion of the global workforce spends prolonged hours in sedentary positions, creating conditions conducive to the development of chronic musculoskeletal pain. This review article, published in the Malaysian Journal of Public Health Medicine, comprehensively examines the relationship between musculoskeletal disorders and physical activity among office workers.

Prevalence and Impact

The review documents that lower back, neck, and shoulder pain are the most common musculoskeletal complaints among office workers worldwide. Recent epidemiological studies have reported overall MSD prevalence rates exceeding 80% among office workers, with neck pain affecting approximately 30–59% and lower back pain affecting 25–53% of this population. These disorders generate substantial economic costs through medical treatment, absenteeism, reduced productivity, and disability claims. In the United States alone, musculoskeletal diseases are the most common cause of occupational illness, with costs to the healthcare sector estimated between $45 and $54 billion annually.

Mechanisms of Office Work-Related MSDs

The review presents several hypothetical mechanisms underlying the development of MSDs in office workers. Prolonged static posture—particularly sitting—leads to sustained loading on spinal structures, reduced blood flow to muscles, accumulation of metabolic waste products, and progressive fatigue of stabilising muscles. The cervical spine is particularly vulnerable during computer work due to the sustained flexion and forward head posture required for screen viewing, while the lumbar spine is subjected to increased intradiscal pressure in seated positions compared to standing.

Beyond direct biomechanical loading, the review highlights evidence that prolonged sitting is associated with broader health consequences including cognitive impairment at the workplace, fragmented daytime sleep quality, and increased risks of psychological, physiological, and medical impairments. These interconnected effects suggest that the impact of sedentary office work extends beyond the musculoskeletal system to affect overall worker health and wellbeing.

Role of Physical Activity

The central argument of this review is that physical inactivity is the primary modifiable risk factor for office work-related MSDs. The evidence base, drawn from both epidemiological studies and intervention trials, consistently demonstrates that regular physical activity—including workplace exercise programmes—can effectively prevent and reduce musculoskeletal discomfort among office workers.

The review examines multiple intervention modalities. Resistance training and strengthening exercises for the neck, shoulder, and trunk musculature have shown efficacy in reducing pain and improving function. Stretching exercises targeting commonly shortened muscle groups (hip flexors, pectorals, upper trapezius) can address postural imbalances that develop from prolonged sitting. Aerobic exercise contributes to improved blood flow, reduced inflammation, and enhanced pain tolerance through endorphin release. Combined programmes incorporating multiple exercise types appear to offer the greatest benefit.

Ergonomic Considerations

While physical activity is emphasised as the primary intervention, the review also discusses the complementary role of ergonomic workplace modifications. Proper workstation setup—including monitor height and distance, keyboard and mouse positioning, chair adjustment, and desk height—reduces biomechanical stress during computer work. The review notes that exercise interventions combined with ergonomic modifications tend to produce greater benefits than either approach alone, suggesting a synergistic relationship between reducing physical demands and building physical capacity.

Implications for Workplace Health Programmes

The evidence synthesised in this review provides a strong rationale for implementing workplace exercise programmes as a core component of occupational health strategy in office-based organisations. Such programmes should be accessible, time-efficient (given the constraints of the workday), and tailored to address the specific musculoskeletal demands of office work. Organisational support—including allocated time for exercise, provision of facilities or instruction, and management endorsement—is critical for sustained participation and effectiveness.

Limitations

The review’s scope, while comprehensive, is necessarily limited by the quality and heterogeneity of the primary studies examined. Many workplace exercise intervention studies suffer from small sample sizes, short follow-up periods, high dropout rates, and lack of blinding. The review does not provide a formal systematic review or meta-analysis, limiting the precision of effect estimates. Additionally, individual variation in MSD susceptibility due to factors including age, sex, fitness level, and psychosocial work environment is acknowledged but not fully addressed.

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