Department of Physical Activity and Sport, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum", Faculty of Sport Science, 30720, Murcia, Spain.
Department of Languages and Computer Systems, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum", Faculty of Informatics, 30100 Murcia, Spain.
Int J Environ Res Public Health. 2020 Feb 7;17(3):1068. doi: 10.3390/ijerph17031068.
The use of smart devices to obtain real-time data has notably increased in the context of training. These technological tools provide data which monitor the external load and technical-tactical actions related to psychological and physical health in junior tennis players. The purpose of this paper is to monitor technical-tactical actions and physical activity during a current tennis competition in the Green stage using a Zepp Tennis Smart Sensor 2. The participants were 20 junior tennis players (under 10 years of age), with an average age of 9.46 years. The total number of strokes (n= 21,477) during 75 matches was analyzed. The study variables were the following aspects: (a) number of strokes, (b) ball impact in the sweet spot; (c) racket speed; (d) ball spin; (e) calories burned; and (f) match time. The current system of competition, based on knockout, does not meet the World Health Organization's recommendations for daily physical activity time. Players mainly used flat forehands with a lack of variability in technical-tactical actions which did not meet the current learning opportunity criteria of comprehensive methodologies. The competition system in under-11 tennis should be adapted to the players' characteristics by improving the variability and quantity of practice.
在训练背景下，使用智能设备获取实时数据的情况显著增加。这些技术工具提供的数据可监测青少年网球运动员的外部负荷和与心理及身体健康相关的技术-战术动作。本文旨在使用 Zepp Tennis Smart Sensor 2 监测绿球阶段的当前网球比赛中的技术-战术动作和身体活动。参与者为 20 名青少年网球运动员（年龄在 10 岁以下），平均年龄为 9.46 岁。对 75 场比赛中的 21477 次击球进行了分析。研究变量包括：（a）击球次数；（b）球击在甜点区的次数；（c）球拍速度；（d）球的旋转；（e）消耗的卡路里；以及（f）比赛时间。基于淘汰赛的现行竞赛制度不符合世界卫生组织对日常身体活动时间的建议。运动员主要使用平击正手，技术-战术动作缺乏多样性，不符合当前综合方法学的学习机会标准。11 岁以下的网球比赛的竞赛系统应通过提高练习的可变性和数量来适应运动员的特点。
