A study on usefulness of change of direction deficit as indicator to evaluate change of direction ability

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K11339
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 59020:Sports sciences-related
• Research Institution: Saitama Prefectural University
• Principal Investigator: YASOJIMA Takashi 埼玉県立大学, 保健医療福祉学部, 准教授 (00435091)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 方向転換能力 / 方向転換走 / COD deficit / 走スピード / 下肢パワー

Outline of Final Research Achievements

The purpose of this study was to examine the usefulness of change of direction deficit (CODD), the difference between change of direction (COD) time and sprint time, as a measure to evaluate COD ability. The results showed that CODD might not reflect the running speed aspect of COD, and that it did not correlate with lower limb power parameters or changes due to training to increase COD ability. Therefore, it was suggested that there are many uncertainties in evaluating COD ability with CODD, and in some cases, the evaluation of COD ability may be misleading.

Free Research Field

スポーツ科学

Academic Significance and Societal Importance of the Research Achievements

方向転換（change of direction：COD）能力は、球技スポーツ選手にとって不可欠な体力要素である。本研究は、COD deficitによるCOD能力の評価の可能性について検討したが、結果的に指標としての不確定さの一端を明らかにすることとなり、その点では学術的に意義があるといえるだろう。また、得られた知見は球技スポーツ選手の体力評価の他に、トレーニングや運動指導の場面に活用することができ、その点で社会的意義は少なからずあると考えられる。