Richard Gregory Cowden，Nicolas Mascret，Timothy Ryan Duckett（Department of Behavioural Medicine，University of KwaZulu-Natal，Durban，KwaZulu-Natal 4041，South Africa；Department of Psychology，Middle Tennessee State University，Murfreesboro，TN 37132，USA；Aix Marseille Univ，CNRS，ISM，Marseille 13007，France；Department of Educational Foundations and Leadership，University of Toledo，Toledo，OH 43610，USA）.A person-centered approach to achievement goal orientations in competitive tennis players：Associations with motivation and mental toughness[J].运动与健康科学(英文),2021,第1期