[Semen analysis of sterile patients among occupational computermen].
OBJECTIVE
To explore temn possible correlation between the computer occupational semen quality.


METHODS
We included in this study 224 sterile males (118 computermen and 106 non-computermen) treated in our clinic of male sterility and 125 normal fertile men as controls, and analyzed such parameters as semen liquefaction time and sperm density, vitality and motility according to the WHO standard.


RESULTS
Compared with the normal controls, there was a significant decrease in the semen volume and sperm density, vitality and motility (P < 0.05-0.01) and a marked increase in liquefaction time in the infertile computermen and non-computermen (P < 0.01). The semen volume and sperm vitality and motility were significantly lower in the infertile computermen than in the infertile non-eomputermen (P < 0.05). The three parameters were also significantly decreased in the 0-5, 6-10 and > 10 h/d computer use groups. Similarly, significantly lower sperm density, vitality and motility were observed in the > 10 hid group than in the 0-5 and 6-10 h/d groups (P < 0.05-0.01), but with no statistical difference between the latter two (P > 0.05).


CONCLUSIONS
Computer occupation is associated with abnormal semen quality, and long-term computer use ( > 10 h/d) may be one of the factors of male infertility.
He
Jiang
J
Institute of Clinical Medicine, PLA Technological Center for Healthy Birth & Child Care, Urumqi General Hospital of Lanzhou Military Region, Urumqi, Xinjiang 830000, China. hejiang8770@163.com
Liu
Hong-chun
HC
Yu
Wu-zhong
WZ
Zou
Hong-yun
HY
D003201:Computers; D006801:Humans; D007248:Infertility, Male / Q000175:diagnosis / Q000209:etiology*; D008297:Male; D016273:Occupational Exposure; D009790:Occupations; D055101:Semen Analysis; D013076:Sperm Count; D013081:Sperm Motility