Van Wieringen P C, Emmen H H, Bootsma R J, Hoogesteger M, Whiting H T
Department of Psychology, Faculty of Human Movement Sciences, Free University, Amsterdam, The Netherlands.
J Sports Sci. 1989 Summer;7(2):153-62. doi: 10.1080/02640418908729833.
Effects of video-feedback on improvement of the tennis service were investigated in subjects having at least 2 years of playing experience in tennis. The experiment was carried out in an indoor tennis hall under normal training conditions. Subjects were randomly divided into three groups: a video-feedback training (VFT) group, a traditional training (TT) group and a control group, each consisting of 22 subjects. While the subjects of the control group received no training at all, subjects in both the VFT and TT groups were trained twice weekly during 5 consecutive weeks. Each training session lasted 40 min, of which 30 min was spent on actual practice in training of the service. The remaining 10 min was spent on watching, analysing and discussing video recordings of either their own service performed during the training session (VFT group), or ground strokes and volleys of top level players (TT group). Both the VFT and TT group showed significantly greater improvements in both achievement scores and form (technique) scores than did the control group. No differences, however, could be demonstrated between the VFT and TT group, indicating that the subjects of the former group did not benefit from the video-feedback they received. While form scores correlated significantly (P less than 0.001) with the velocity of the served ball, no such relation between form scores and spatial accuracy was apparent.
在至少有两年网球运动经验的受试者中，研究了视频反馈对网球发球技术提高的影响。实验在室内网球馆正常训练条件下进行。受试者被随机分为三组：视频反馈训练（VFT）组、传统训练（TT）组和对照组，每组各有22名受试者。对照组受试者完全不接受训练，而VFT组和TT组的受试者在连续5周内每周训练两次。每次训练持续40分钟，其中30分钟用于发球训练的实际练习。其余10分钟用于观看、分析和讨论训练期间自己发球的视频记录（VFT组），或顶级球员的底线击球和截击球视频记录（TT组）。VFT组和TT组在成绩得分和动作（技术）得分方面的提高均显著高于对照组。然而，VFT组和TT组之间未显示出差异，这表明前一组受试者并未从所接受的视频反馈中受益。虽然动作得分与发球速度显著相关（P<0.001），但动作得分与空间准确性之间未显示出明显关系。
