Department of Exercise Physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan 81746-7344, Iran.
Sports Scientist, Sepahan Football Club, Isfahan 81887-78473, Iran.
Int J Environ Res Public Health. 2020 Oct 29;17(21):7934. doi: 10.3390/ijerph17217934.
The purpose of this study was to test the relationships between training workload (WL) parameters with variations in anaerobic power and change of direction (COD) in under-16 soccer players. Twenty-three elite players under 16 years were daily monitored for their WL across 20 weeks during the competition soccer season. Additionally, players were assessed three times for anthropometric, body composition, COD, and anaerobic power. A correlational analysis between the mean differences between assessments and accumulated WL parameters were conducted. Moreover, a regression analysis was executed to explain the variations in the percentage of change in fitness levels considering the accumulated WL parameters and peak height velocity. The accumulated daily loads during one week showed a large and a moderate correlation with peak power and COD at different periods of the season. Regression analysis showed no significant predictions for COD ( = 1.2, = 0.41) prediction, acute load ( = 0.63, = 0.78), or chronic load ( = 0.59, = 0.81). In conclusion, it may be assumed that the values of the chronic workload and the accumulated training monotony can be used to better explain the physical capacities of young soccer players, suggesting the importance of psychophysiological instruments to identify the effects of the training process in this population.
本研究旨在测试青少年足球运动员训练负荷（WL）参数与无氧能力和变向能力（COD）变化之间的关系。23 名 16 岁以下的精英球员在比赛赛季的 20 周内每天的 WL 都进行了监测。此外，运动员还进行了三次人体测量、身体成分、COD 和无氧能力评估。对评估之间的平均差异与累积 WL 参数之间的相关性进行了分析。此外，还执行了回归分析，以根据累积 WL 参数和峰值高度速度来解释体能水平变化的百分比。一周内的累积日负荷与赛季不同时期的最大功率和 COD 呈大、中度相关。回归分析显示，COD（=1.2，=0.41）、急性负荷（=0.63，=0.78）或慢性负荷（=0.59，=0.81）的预测均无统计学意义。总之，可以假定慢性负荷和累积训练单调的数值可以更好地解释年轻足球运动员的身体能力，这表明心理生理仪器对于识别该人群训练过程的影响非常重要。
