Young R J, Ismail A H, Bradley A, Corrigan D L
Br J Sports Med. 1976 Dec;10(4):230-5. doi: 10.1136/bjsm.10.4.230.
The purpose of the study was to: 1) identify the differences in serum testosterone levels among four groups of adult men differentiated on the basis of physical fitness and age, and 2) determine the effect of a four-month physical fitness programme consisting of running, calisthenics and recreational activities on the serum testosterone levels of the four groups. The groups were designated: high-fit, young aged about 32 (n = 7); high-fit, old aged about 52 (n = 7); low-fit, young (n = 7), and low-fit, old (n = 7). The subjects were selected and grouped according to physical fitness scores obtained using the regression equation of Ismail et al. Serum testosterone was determined by a radioimmunoassay method. The pre-test ANOVA revealed that the high-fit groups had a significantly (p less than .01) higher testosterone level (754.29 ng/100 ml) than the low-fit groups (548.07 ng/100 ml) and the high-fit, young group (925.01 ng/100 ml) was significantly (p less than .01) higher than the other three groups. Post-test values were adjusted using pre-test testosterone values as covariates. No significant differences among the groups were found indicating that the serum testosterone levels were the same regardless of different ages and fitness levels. The findings were discussed in light of physiological, biochemical and psychological factors.
1）确定根据身体素质和年龄区分的四组成年男性血清睾酮水平的差异，以及2）确定一项为期四个月、由跑步、健身操和娱乐活动组成的健身计划对这四组男性血清睾酮水平的影响。这四组分别为：高身体素质、约32岁的年轻组（n = 7）；高身体素质、约52岁的老年组（n = 7）；低身体素质、年轻组（n = 7），以及低身体素质、老年组（n = 7）。根据使用伊斯梅尔等人的回归方程获得的身体素质得分对受试者进行选择和分组。血清睾酮通过放射免疫分析法测定。预测试方差分析显示，高身体素质组的睾酮水平（754.29 ng/100 ml）显著高于低身体素质组（548.07 ng/100 ml）（p <.01），且高身体素质、年轻组（925.01 ng/100 ml）显著高于其他三组（p <.01）。后测试值以预测试睾酮值作为协变量进行调整。未发现组间存在显著差异，表明无论年龄和身体素质水平如何，血清睾酮水平相同。根据生理、生化和心理因素对研究结果进行了讨论。
