Relationship between women's occupational work and bone health: a study from India

Area of Science:

• Orthopedics and Sports Medicine
• Public Health
• Nutritional Science

Background:

• Physical activity is a known determinant of bone mass.
• Limited research exists on the impact of occupational activities on bone health.
• Bone health is crucial, especially in low-income populations where nutritional deficiencies may be prevalent.

Purpose of the Study:

• To investigate the relationship between different occupational activities and bone parameters in Indian women.
• To assess bone mineral density (BMD) and bone area using dual-energy X-ray absorptiometry (DXA).
• To explore potential influencing factors like diet and body size.

Main Methods:

• Study included 158 women from low-income groups in India, categorized by occupation: beedi makers, sweepers, and construction workers.
• Occupational groups were compared for anthropometric parameters, parity, menopausal status, and dietary calcium intake.
• Bone mineral density (BMD) and bone area were measured at various skeletal sites using DXA.

Main Results:

• Overall BMD values were lower than in developed countries, potentially due to body size differences.
• No significant differences in femoral neck and hip BMD were observed across occupational groups.
• Beedi makers had a larger femoral neck bone area; sweepers showed significantly lower lumbar spine BMD, with higher osteoporosis prevalence in sweepers and construction workers.

Conclusions:

• Occupational activities have varied effects on bone health, with lumbar spine BMD being particularly affected.
• The squatting posture of beedi makers was associated with better lumbar spine BMD, possibly due to upper body weight-bearing.
• Undernutrition may significantly influence the relationship between occupational physical activity and bone parameters in this population.