Wirth A, Neermann G, Eckert W, Heuck C C, Weicker H
Eur J Appl Physiol Occup Physiol. 1979 Apr 12;41(1):51-9. doi: 10.1007/BF00424468.
Twenty healthy athletes performed a heavy physical exercise before and after a controlled training period of 3 months. As a result of physical training there was a reduction in lactate concentration during and after exercise. Plasma free fatty acids and triglyceride levels were lower at rest as well as during and after exercise. Insulin concentrations decreased during exercise before the training period whereas they remained constant afterwards. The composition of individual free fatty acids changed in the same way during exercise before and after training: fatty acids with shorter hydrocarbon chains increased, those with longer chains decreased. Comparing the pattern of individual free fatty acids before and after training a higher percentage of saturated and a lower percentage of mono-unsaturated fatty acids was observed. It is concluded that changes in the plasma free fatty acid profile during heavy exercise reflect a preferential uptake and oxidation of certain individual free fatty acids. The significance of training-induced changes in the plasma free fatty acid pattern is discussed.
20名健康运动员在为期3个月的受控训练期前后进行了剧烈体育锻炼。体育训练的结果是，运动期间和运动后的乳酸浓度降低。静息时以及运动期间和运动后的血浆游离脂肪酸和甘油三酯水平均较低。训练期前运动期间胰岛素浓度降低，而之后保持恒定。训练前后运动期间，个体游离脂肪酸的组成变化方式相同：碳氢链较短的脂肪酸增加，碳氢链较长的脂肪酸减少。比较训练前后个体游离脂肪酸的模式，发现饱和脂肪酸的百分比更高，单不饱和脂肪酸的百分比更低。得出的结论是，剧烈运动期间血浆游离脂肪酸谱的变化反映了某些个体游离脂肪酸的优先摄取和氧化。讨论了训练引起的血浆游离脂肪酸模式变化的意义。
