The major sporting success of one's countrymen and women is often supposed to promote the growth of general participation in that sport. This study is the first to analyse the impact of sports heroes on the membership figures of the corresponding sports association by means of an econometric analysis. We do so by evaluating the so-called 'Boris Becker effect' by simultaneously testing for the effects of the rise and retirement of the three stars Boris Becker, Stefanie Graf, and Michael Stich. As a first paradox, our results indicate a negative tennis growth effect associated with the time period of the ascendency of the sport stars. With the first paradox, their retirement should then have a positive effect. In this sense, our second result of a statistically negative tennis growth since the declining success of the German tennis stars must be regarded as a second paradox.
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机译：人们通常认为，同胞和妇女在体育运动中取得的重大成就将促进人们普遍参与这项运动。这项研究是首次通过计量经济学分析来分析体育英雄对相应体育协会会员人数的影响。我们通过同时测试三颗星Boris Becker，Stefanie Graf和Michael Stich的上升和退休的影响来评估所谓的“ Boris Becker效应”。作为第一个悖论，我们的结果表明与运动明星崛起的时间段相关的负面的网球增长效应。对于第一个悖论，他们的退休将产生积极的影响。从这个意义上讲，自从德国网球巨星的成功下滑以来，我们网球运动在统计上出现负增长的第二个结果必须被视为第二个悖论。
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