Amigó N, Cadefau J A, Ferrer I, Tarrados N, Cussó R
Unitat de Bioquímica, Facultat de Medicina, Universitat de Barcelona, Spain.
J Sports Med Phys Fitness. 1998 Dec;38(4):298-304.
To study the effect of some weeks of rest on three groups of adolescent soccer players, who had undergone systematic training for eleven months.
Retrospective and comparative investigation; duration 4-8 weeks.
young amateur players from a Spanish football club were examined at the beginning and at the end of the summer rest period.
37 young soccer players aged 14, 15 and 16 years old. They were members of three football teams.
during the rest period they were free from any training program.
biopsies of M. vastus lateralis were taken immediately after training and after the summer holidays. The type, percentage and diameter of the fibers, as well as the enzymes of glycogen metabolism (glycogen synthase and glycogen phosphorylase), glycolysis (phosphofructokinase and lactate dehydrogenase), oxidative metabolism (succinate dehydrogenase and citrate synthase) and creatine kinase and transaminase (aspartate and alanine aminotransferase) were studied.
Detraining had an adaptation effect, decreasing the cross-sectional area of type I and type II fibers, and decreasing the activities of creatine kinase, citrate synthase, phosphofructokinase, lactate dehydrogenase and aspartate aminotransferase.
The results can help trainers to plan the length of the rest period between training.
研究数周休息对三组经过11个月系统训练的青少年足球运动员的影响。
回顾性比较研究；持续时间4 - 8周。
在夏季休息期开始和结束时，对来自一家西班牙足球俱乐部的年轻业余球员进行检查。
37名年龄在14、15和16岁的年轻足球运动员。他们是三支足球队的队员。
在休息期间，他们没有任何训练计划。
在训练后和暑假后立即取股外侧肌活检样本。研究纤维的类型、百分比和直径，以及糖原代谢酶（糖原合酶和糖原磷酸化酶）、糖酵解酶（磷酸果糖激酶和乳酸脱氢酶）、氧化代谢酶（琥珀酸脱氢酶和柠檬酸合酶）、肌酸激酶和转氨酶（天冬氨酸和丙氨酸转氨酶）。
停训产生了适应性效应，降低了I型和II型纤维的横截面积，以及肌酸激酶、柠檬酸合酶、磷酸果糖激酶、乳酸脱氢酶和天冬氨酸转氨酶的活性。
这些结果有助于教练规划训练期间休息期的时长。
