Original Article: JRCRS. 2025; 13(4):228-235
7- Associations Between Obesity, Piriformis Muscle Dysfunction, And Pain in Drivers: A Cross Sectional Study
Muhammad Salman1, Ramiz Meraj2, Usama Shahid3, Taimoor Ali Hassan4, Zohaib Hassan5, Waqas Haider Sial6, Muhammad Adnan Haider7
1 Physiotherapist, Spine C, Shanghai, China
2 Physiotherapist, Meraj physiotherapy Clinic, Burewala, Pakistan
3 Physiotherapist, Aqsa Clinic & maternity home Tandlianwala, Pakistan
4 Physiotherapist, Taimoor Physiotherapy and Health Clinic, Faisalabad, Pakistan
5 Physiotherapist, Hamza Hospital, Lahore, Pakistan
6 Physiotherapist, Royal Metropolitan medical university, Kyrgyzstan KG
7 MS Student, Physical Therapy Department, Tokyo Metropolitan University, Japan
Read Full-Text Full-Text PDF DOI: https://dx.doi.org/10.53389/JRCRS.2025130407
ABSTRACT:
Background: Obese vehicle drivers are predisposed to piriformis syndrome due to prolonged sitting, poor posture, and increased mechanical stress. Excess body weight may intensify piriformis muscle tightness and compress the sciatic nerve, resulting in chronic pain and functional limitations.
Objective: To determine the associations between obesity, piriformis muscle dysfunction, and pain severity among professional drivers.
Methodology: This cross-sectional study was conducted over six months in District Lahore among 113 male online vehicle drivers (Uber, Careem, Foodpanda) aged 18–60 years, selected through convenient sampling. Participants with prolonged sitting time and elevated BMI were included. Data were collected using a self-designed questionnaire, the Piriformis Stretch Test, and the Visual Analog Scale (VAS) for pain assessment. Ethical approval was obtained, and informed consent was secured from all participants. Statistical analysis was performed using SPSS version 24.0, applying descriptive and Pearson’s correlation tests to evaluate relationships among BMI, Piriformis Stretch Test outcomes, and pain severity.
Results: A significant positive correlation was found between BMI and the Piriformis Stretch Test (r = 0.681, p < 0.001), indicating that drivers with higher BMI were more likely to exhibit piriformis tightness. Piriformis Stretch Test results also showed a strong correlation with pain intensity (r = 0.833, p < 0.001), while BMI correlated significantly with pain severity (r = 0.681, p < 0.001). Approximately 72% of participants reported moderate-to-severe pain (VAS > 5). Longer driving hours (>8 hours/day) and increasing age further amplified pain levels (p < 0.05).
Conclusion: Higher BMI, prolonged driving duration, and piriformis muscle dysfunction were significantly associated with increased pain severity among vehicle drivers. These findings highlight the importance of implementing targeted interventions such as weight management, ergonomic adjustments, and regular stretching programs to reduce musculoskeletal pain in this population.
Keywords: Correlation, Drivers, Obese, Occupational health, Piriformis dysfunction