{"id":1668,"date":"2025-07-30T10:09:52","date_gmt":"2025-07-30T01:09:52","guid":{"rendered":"https:\/\/www.med.osaka-u.ac.jp\/pub\/bci\/?page_id=1668"},"modified":"2025-07-31T13:14:39","modified_gmt":"2025-07-31T04:14:39","slug":"ogasawara_gr","status":"publish","type":"page","link":"https:\/\/www.med.osaka-u.ac.jp\/pub\/bci\/en\/research\/ogasawara_gr","title":{"rendered":"Ogasawara Group"},"content":{"rendered":"

A Comprehensive Understanding of Sports Injuries and
Disorders Through the Intentionality of Movement
\n<\/i><\/h4>\n

1.Comprehensive Study on the Psycho-cognitive and Biomechanical Mechanisms
Underlying Sports Injuries: Risk structure model of sports injury<\/h3>\n
\n

This model illustrates the interconnected risk factors that lead to sports injuries and disorders, moving from left to right. It serves as the overarching concept encompassing Research Topics 2 through 5 below.
\nThe Issei Ogasawara Group conducts research on sports injuries in accordance with this risk structure model. In particular, we aim to establish effective prevention methods by linking the left side of the model\u2014psychological and cognitive factors that are difficult to quantify\u2014with the biomechanical domain, which is more amenable to mathematical modeling. Through this integrated understanding, we pursue psychologically, cognitively, and biomechanically grounded approaches to preventing sports injuries and disorders.<\/p>\n

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 <\/p>\n

2.Biomechanical Research on the Mechanisms of
Sports Injuries and Disorders<\/h3>\n
\n

By combining theoretical analysis of mathematical models of the human body based on equations of motion with motion capture data, we investigate the kinematic and kinetic features that may lead to sports injuries and disorders, as well as which movements are safer. For example, one of our findings revealed that “sudden braking using the heels” is a high-risk motion for anterior cruciate ligament (ACL) injury.<\/p>\n

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 <\/p>\n

3.Prediction of Sports Injury Risk Using Deep Learning
on Postural Sway Data<\/h3>\n
\n

We have long conducted single-legged drop landing tests as a means of evaluating dynamic postural stability in athletes. By analyzing postural sway data\u2014such as ground reaction forces and center of pressure time series\u2014collected during landing with force plates, we use deep learning and related techniques to: predict future risk of ACL injuries, identify hazardous landing postures, and evaluate recovery levels after ankle sprains.<\/p>\n

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 <\/p>\n

4. Experimental Approach for Cognitive Factors and Motor Decision-Making
Related to Movement Control<\/h3>\n
\n

On what basis do humans make movement-related decisions? Do people sometimes take physical risks in pursuit of rewards, even at the expense of bodily safety? We explore these mind\u2013body interactions through experimental paradigms such as primitive reaching tasks and whole-body gross motor psychophysical experiments. This topic serves as a critical bridge between the psychological\/cognitive domain and the biomechanical domain in our overall risk structure model, and is a major focus of our group\u2019s research.<\/p>\n

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 <\/p>\n

5. Psychological Factors Related to Sports Injuries and Disorders
using Mixed Method Approach<\/h3>\n
\n

What kinds of psychological characteristics are linked to sports injuries and disorders? We investigate this question based on key theories in sport psychology, utilizing survey techniques such as large-scale web-based questionnaires and semi-structured interviews. Our approach integrates both quantitative and qualitative data in a mixed methods framework. Some psychological patterns specific to Japanese athletes\u2014distinct from Western populations\u2014have also been observed, highlighting the need for culturally sensitive injury prediction and prevention strategies.<\/p>\n

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 <\/p>\n

6.Other Studies on Human Movement and Sport Science<\/h3>\n
\n
    \n
  • Research on behavior change through \u201cpositive emotions\u201d induced by physical activity (Sport in Life Project, Japan Sports Agency)<\/li>\n
  • Motor control studies on the correct use of chopsticks<\/li>\n
  • Scientific support for elite sports (e.g., performance analysis for Japan\u2019s national handball team)<\/li>\n
  • Development and implementation of lower-limb functional assessment devices for older adults (Society 5.0 Research Promotion Program, MEXT)<\/li>\n<\/ul>\n<\/div>\n

     <\/p>\n

    7. Research Facilities and Equipment<\/h3>\n
    \n

    We maintain motion analysis laboratories on both Suita and Toyonaka campuses, equipped with the following systems:<\/p>\n

      \n
    • Optical motion capture system (OptiTrack Prime 17W, NaturalPoint Inc.)<\/li>\n
    • Multiple force plates (AMTI, Tech Gihan, Technology Service Co., Ltd.)<\/li>\n
    • Wireless EMG sensors (Trigno Avanti & Centro, Delsys)<\/li>\n
    • EEG recording system (Eego Sports, ANT Neuro)<\/li>\n
    • Haptic devices (Phantom Premium 1.5 HF) & custom manipulandum<\/li>\n
    • Pressure distribution measurement system (High Speed I-SCAN)<\/li>\n
    • High-speed cameras<\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"A Comprehensive Understanding of Sports Injuries and Disorders Through the Intentionality of Movement 1.Compre […]","protected":false},"author":1,"featured_media":0,"parent":18,"menu_order":9,"comment_status":"closed","ping_status":"closed","template":"page_en.php","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-1668","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.med.osaka-u.ac.jp\/pub\/bci\/wp-json\/wp\/v2\/pages\/1668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.med.osaka-u.ac.jp\/pub\/bci\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.med.osaka-u.ac.jp\/pub\/bci\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.med.osaka-u.ac.jp\/pub\/bci\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.med.osaka-u.ac.jp\/pub\/bci\/wp-json\/wp\/v2\/comments?post=1668"}],"version-history":[{"count":13,"href":"https:\/\/www.med.osaka-u.ac.jp\/pub\/bci\/wp-json\/wp\/v2\/pages\/1668\/revisions"}],"predecessor-version":[{"id":1697,"href":"https:\/\/www.med.osaka-u.ac.jp\/pub\/bci\/wp-json\/wp\/v2\/pages\/1668\/revisions\/1697"}],"up":[{"embeddable":true,"href":"https:\/\/www.med.osaka-u.ac.jp\/pub\/bci\/wp-json\/wp\/v2\/pages\/18"}],"wp:attachment":[{"href":"https:\/\/www.med.osaka-u.ac.jp\/pub\/bci\/wp-json\/wp\/v2\/media?parent=1668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}