Poland M L, Giblin P T, Ager J W, Moghissi K S
Int J Fertil. 1986 Jul-Aug;31(3):229-31.
Fifty-three donors with good semen quality were studied monthly for sperm count and motility over 9 to 22 months. Medical students (n = 31) in freshman and sophomore years subjected to the stress of twice-yearly examinations were compared with nonstudents (n = 22) not exposed to common stressful periods. Sperm count and quality (count X motility) for the student group were significantly elevated during examination months versus nonexamination months. Controls demonstrated no differences over these months. Differences between individuals, donor selection factors, and the effects of variable degrees of stress on sperm transport may have contributed to this finding.
对53名精液质量良好的捐献者进行了为期9至22个月的每月精子计数和活力研究。将大一和大二承受每年两次考试压力的医学生（n = 31）与未经历常见压力时期的非学生（n = 22）进行比较。与非考试月份相比，学生组在考试月份的精子计数和质量（计数×活力）显著升高。对照组在这些月份没有差异。个体差异、捐献者选择因素以及不同程度压力对精子运输的影响可能导致了这一结果。
