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In this paper, a study was performed to develop a Forehand stroke\u2019 performance evaluation system as the second principal component of the virtual\u2010coach Table Tennis shadow\u2010play training system. This study was conducted to show the effectiveness of the proposed LSTM model, compared with 2DCNN and RBF\u2010SVR time\u2010series analysis and machine learning methods, in evaluating the Table Tennis Forehand shadow\u2010play sensory data provided by the authors. The data was generated, comprising 16 players\u2019 Forehand strokes racket\u2019s movement and orientation measurements; besides, the strokes\u2019 evaluation scores were assigned by the three coaches. The authors investigated the ML models\u2019 behaviors changed by the hyperparameters values. The experimental results of the weighted average of RMSE revealed that the modified LSTM models achieved 33.79% and 4.24% estimation error lower than 2DCNN and RBF\u2010SVR, respectively. However, the  results show that all nonlinear regression models are fit enough on the observed data. The modified LSTM is the most powerful regression method among all the three Forehand types in the current study.<\/jats:p>","DOI":"10.1155\/2021\/5584756","type":"journal-article","created":{"date-parts":[[2021,4,9]],"date-time":"2021-04-09T20:20:47Z","timestamp":1617999647000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["A Deep Learning Approach for Table Tennis Forehand Stroke Evaluation System Using an IMU Sensor"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4426-2451","authenticated-orcid":false,"given":"Sahar S.","family":"Tabrizi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8949-9180","authenticated-orcid":false,"given":"Saeid","family":"Pashazadeh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6667-5575","authenticated-orcid":false,"given":"Vajiheh","family":"Javani","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,4,9]]},"reference":[{"key":"e_1_2_10_1_2","unstructured":"ShanF. 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