2014 Fiscal Year Final Research Report
A novel attempt to clarify the mechanics of choronic groin injuries in soccer
| Project/Area Number |
24500737
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Sports science
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| Research Institution | Fukuoka University (2014)
Nagoya University (2012-2013) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
AKIMA Hiroshi 名古屋大学, 総合保健体育科学センター, 教授 (40292841)
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| Co-Investigator(Renkei-kenkyūsha) |
IKEGAMI Yasuo 愛知淑徳大学, 健康医療科学部, 教授 (60092988)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | Soccer kick / Adductor longus / Surface EMG / Motion Capture / Ball reaction force |
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| Outline of Final Research Achievements |
Groin pain has been recognized as common chronic injury for soccer players. This study was designed to identify the mechanics of hip adductors associated to chronic groin pain during the instep and side-foot soccer kicking. The biggest originality of this study was to precisely detect superficial region of adductor longus muscle using ultrasound techniques. Moreover, we aimed to estimate ball reaction force from ball kinematics.
We observed the change of hip adductor’s activation level against kicking effort level separately for the two types of soccer kicks, and found no distinctive changes for the kicking leg in both kicks while notable, significant changes were observed for the support leg EMG in both kicks (between 50% effort vs. other conditions).
We also succeeded in developing an accurate ball impact model to estimate time-dependent change of the ball rection force by considering oval shape ball deformation and instantaneous change of ball surface density during ball impact.
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| Free Research Field |
Sports Biomechanics
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