2013 Fiscal Year Final Research Report
RELATIONSHIP BETWEEN PLANTAR LOAD DISTRIBUTION AND LOWER JOINT KINETICS DURING TAKE-OFF PHASE IN VERTICAL JUMP
| Project/Area Number |
23650394
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Sports science
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| Research Institution | Nippon Sport Science University |
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Principal Investigator |
FUNATO Kazuo 日本体育大学, 体育学部, 教授 (60181442)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 足底圧分布 / 定量化 / 経時的変化 / モーションキャプチャー / 地面反力 / 垂直跳び / 跳躍高 / キネマティックス |
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| Research Abstract |
This study was designed to examine the quantification of plantar load distribution pattern during take-off phase and apply it to performance assessment related to height in vertical jump. In order to define sub-areas from foot anatomical measurement points, Foot scan (RsScan), VICON MX20 and Force plate were systematically synchronized. Each foot sub-area was determined consisted of including 5 sub-areas(MF: medial forefoot, LF: lateral forefoot, MiF: midfoot, MH: medial heel, LH: lateral heel). Twenty one male subjects performed counter movement jumps on pressure plate and force plate. Subjects were divided into Good(n=7) and Poor(n=6) groups according to jump height. 5 sub-areas plantar load impulses and weighing normalize time were calculated. Good jumper exhibited larger MF plantar load impulse compared to Poor group (p<0.05). Earlier Lateral-Medial planter load shift time might influence on GRF vector as to result greater MF plantar load impulse.
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