Thousands of people are working daily in a dusty environment. Many studied reported respiratory symptoms and ventilatory disorders among Factory workers who exposed to cement dust. But the evidence for respiratory effect and daily activities over a long time of cement dust exposure has not been conclusive

A total of 49 subjects working in a cement production factory were assessed and divided into three groups according to the total period of work exposure. Groupe A (18 subjects) with work period < 10 years, group B (13 subjects) with work period 10-15 years, group C (18 subjects) with work period > 15 years. The ventilatory functions, oxygen saturation, and quality of life were assessed in the three groups. RESULTS: The study results revealed a statistically significant difference between the three groups in the mean values of FVC (%), FEV1/FVC (%), SPO2.

Inclusion Criteria:

• The ages were between 25 to 50 years old.
• the body mass index ranged from (18,5 - 29,9) kg/m2.

Exclusion Criteria:

• Age less than 25 or more 50.
• Any chronic diseases
• severe musculoskeletal and cardiopulmonary disorders and
• Class III Obesity (35-39.9 kg/m 2) or more

Out of sixty persons who were assigned to this study, a total of 49 subjects (group 1 n = 18, group 2 n = 13 and group 3 n = 18) completed the study (Fig. 1).

In all groups, A, B and, C; height and weight scale were obtained for calculating BMI. The distribution of smokers between different age groups was measured (table ) The pulmonary function tests were performed to evaluate the capacity and volume of the lungs among the participants. Spirometry measurements, including FVC, FEV1, ratio of FEV1 to FVC (FEV1/FVC), forced expiratory flow 25-75% (FEF 25-75%), and peak expiratory flow (PEF