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Updated: Aug 2, 2026

Sperm Collection of Differential Quality Using Density Gradient Centrifugation
Published on: November 29, 2018
[Analysis of sterile male semen of occupational drivers]
Rong-Po Zhao1, Shi-Qiang Yang, Li Huang
1Morphological Laboratory, Medical College, Henan University of Science and Technology, Luoyang, Henan 471003, China.
Objective:
To explore the possible correlation between the driver's occupation and male semen quality.
Methods:
Semen samples were collected from 1,223 infertile men (78 drivers and 1,145 non-drivers) and 100 normal men, and their liquefaction, sperm density, sperm vitality, sperm motility and sperm shape were analysed.
Results:
The abnormal rates of semen quality in sterile male drivers were significantly higher than in non-drivers(P < 0.05) and in normal men(P < 0.01). The semen abnormal rates in drivers with more than 8 years' driving experience were higher than in those with less than 8 years' driving experience(P < 0.05).
Conclusion:
Driving occupation can result in abnormal semen quality.
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