Tsitouras P D, Martin C E, Harman S M
J Gerontol. 1982 May;37(3):288-93. doi: 10.1093/geronj/37.3.288.
There are reports of decreases in both sexual activity and serum testosterone in older men but not of any clear association between the two variables. In healthy participants in the Baltimore Longitudinal Study on Aging, despite the fact that serum testosterone did not decline with age, sexual activity decreased in a highly predictable fashion. In men over 60 years old, those with higher levels of sexual activity (for age) had significantly greater levels of serum testosterone. Although we found an inverse correlation between testosterone and percentage of body fat, there was no relationship between percentage of body fat and sexual activity. We also found no correlation between testosterone or sexual activity and smoking or coronary heart disease. Subjects drinking more than 4 oz. of ethanol per day were more likely to have decreased sexual activity but not diminished testosterone concentration. Our data suggest that, although serum testosterone level and ethanol intake may affect sexual activity in older men to some degree, age itself still appears to be the most influential variable.
有报告称老年男性的性活动和血清睾酮水平均有所下降，但这两个变量之间并无明确关联。在巴尔的摩纵向衰老研究的健康参与者中，尽管血清睾酮水平并未随年龄下降，但性活动却以高度可预测的方式减少。在60岁以上的男性中，（按年龄）性活动水平较高者的血清睾酮水平显著更高。虽然我们发现睾酮与体脂百分比呈负相关，但体脂百分比与性活动之间并无关联。我们还发现睾酮或性活动与吸烟或冠心病之间没有相关性。每天饮用超过4盎司乙醇的受试者性活动减少的可能性更大，但睾酮浓度并未降低。我们的数据表明，尽管血清睾酮水平和乙醇摄入量可能在一定程度上影响老年男性的性活动，但年龄本身似乎仍是最具影响力的变量。
