A feasibility study of the incidence and symptoms of the throwing yips in college baseball players

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  • Aoyama Toshiyuki
    Department of Physical Therapy, Ibaraki Prefectural University of Health Sciences
  • Ae Kazumichi
    Department of Physical Therapy, Ibaraki Prefectural University of Health Sciences
  • Souma Hiroto
    Department of Sports Rehabilitation, Gakusai Hospital
  • Miyata Kazuhiro
    Department of Physical Therapy, Ibaraki Prefectural University of Health Sciences
  • Kajita Kazuhiro
    Faculty of Health and Sport Sciences, Tsukuba International Academy for Sport Studies (TIAS), University of Tsukuba
  • Nara Takaaki
    Faculty of Health and Sport Sciences, University of Tsukuba
  • Kawamura Takashi
    Faculty of Health and Sport Sciences, University of Tsukuba

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Other Title
  • 大学野球選手における送球イップスの発症率とその症状に関する探索的研究
  • ダイガク ヤキュウ センシュ ニ オケル ソウキュウ イップス ノ ハッショウリツ ト ソノ ショウジョウ ニ カンスル タンサクテキ ケンキュウ
  • A feasibility study of the incidence and symptoms of the throwing yips in college baseball players (in Japanese)

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Abstract

<p>The yips represent a disorder that makes it challenging for an individual to perform automatic and coordinated movements in sports activities. The cause of the yips is not sufficiently clarified, and limited information is available regarding throwing yips in baseball. Therefore, this study was designed to clarify the incidence and characteristics of the throwing yips among college baseball players. Total 107 players of the college baseball team participated in the study and completed the questionnaire by answering questions about their experience of the yips (loss of control to throw the ball accurately for more than 1 month), the symptom intensity, and changes observed in the symptoms in different situations. The 47.1% of players met the definition of throwing yips. The symptoms of the yips were more pronounced with short-distances and low intensity of throwing. Moreover, there were various subjective symptoms, such as the issue about co-contraction of the upper limb, sensory function, body ownership, and movement planning. Various physical symptoms associated with throwing yips suggest that the yips are not only a disorder of motor skills, but result from movement disorders. The present results show that the occurrence of the yips depends on the throwing condition; this finding provides useful insights into the mechanism and the treatment of the yips. Interdisciplinary studies that aim to elucidate the cause of the yips and develop effective intervention are necessary.</p>

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