[Changes in urine vitamin C, creatinine and uropepsin levels as a result of workload at standard work stations in the shipyard].

In 30 randomly selected workers at standard shipyard work-stations, energetic expenditure was estimated by comparing the results with those of biochemical tests used for evaluating the workload degree, such as: creatinine and vitamin C content in urine, uropepsin activity, degree of saturating the organism with vitamin C. The same examinations were carried out in 20 auxiliary and administrative employees composing a control group. The results demonstrate decreased vitamin C level in urine and saliva towards the end of the working day in the productive" group (the one under examination) as compared to the control one." The total creatinine level and uropepsin activity were also enhanced in the urine of the productive workmen. The differences between the mean values between the examined and control groups were statistically significantly different. A correlation was found between the energetic expenditure and changes in the mentioned biochemical parameters in urine.