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Effect of the back plate positioning for start time performances for 5m and 10m distances in swimming kick start
J-GLOBAL ID : 202201012804701108J-GLOBAL ID : 202301019486094800J-GLOBAL ID : 200901085265547080J-GLOBAL ID : 202101004237845144The purpose of this study was to clarify the effects in the lower hip angle in different back plate positions has on the times of the 5 m and 10 m of a swim start. Seven male Japanese swimmers including national level athletes were selected as subjects. Each swimmer participated in three back plate positionsïŒeach dive using a different back plate position and recordings of time from the start to 15m were made. 10 motion captured systems were used to capture kinematics data, and two video cameras measured the time at each passing point. The results of this study showed that the 10m time was significantly shorter in the order of Front, Prefer, and
Back. There was no difference in the take-off horizontal velocity, but the 10m time resulted to be shorter when the take-off angle was higher. The farther the distance between the back plate, the larger rear foot hip angle at the kick start stance of the start, and the earlier the start of extension of each joint angle. It is considered that this makes it easier to raise the upper body, which enables horizontal movement and increases the speed of the 10m time.1520860078898196096application/pdfdepartmental bulletin pape
Examination of selective learning environment for challenging records in high jump class : a study among 6th grade elementary school children
J-GLOBAL ID : 202101020656121305The purpose of this study was to examine a selective learning environment regarding how to challenge records through a high jump class for 36 ïŒ19 boys and 17 girlsïŒ 6th grade elementary school children. A unit of learning for high jump that introduced a selective learning environment was practiced five times. In the first half of the unit, learning activities were practiced by acquiring a rhythmic approach and challenging the target record using a nomogram. In the second half of the unit, learning activities were practiced by selecting the approach technique ïŒfive- or seven-step approachïŒ and the method of goal setting ïŒnomogram or a quick reference table showing percentages for heightïŒ. Results indicated the following.
1ïŒThe high jump class that introduced a selective learning environment in this study was effective in increasing motivation and interest in learning high jump.
2ïŒIt is desirable to introduce both seven-step and five-step approaches when teaching the technique for high jump approach, and to enable learners to select the approach technique that suits them best.
3ïŒIt is desirable to use both a quick reference table showing percentages for height and nomograms to set goals for high jump, and to encourage learners to use the goal setting method that best suits them.1520015653961903232application/pdfdepartmental bulletin pape
Public-Private Partnerships in the Sewerage Projects
J-GLOBAL IDïŒ202101013193905836ç®ã次
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Quantitative analysis of foot arch deformation and plantar load distribution pattern during running
J-GLOBAL ID : 202101004237845144J-GLOBAL ID : 201801009314123820J-GLOBAL ID : 202201012804701108The purpose of this study was to quantify the foot medial longitudinal arch deformation and related plantar load distribution during running.
ãPlantar pressure measurement plate (Novel GmbH®, 100Hz), motion capture system (Oxford, 100Hz) and force plate (Kistler, 1KHz) were used as to synchronize each data in time domain. Plantar load distribution was divided into five sub-area based on anatomical measurement points on the foot. Medial longitudinal arch angle was calculated as the angle between the distal first metatarsal, navicular tuberosity and calcaneus, and first metatarsophalangeal joint angle as the angle between the hallux, distal and proximal first metatarsal.
ãThe plantar load was observed to shift to the forefoot during push off, and the medial longitudinal arch angle showed the largest change. Thereafter, the anterior ground reaction force tended to increase with dorsiflexion of the metatarsophalangeal joint. Medial longitudinal arch could be a flexible structure that absorbs plantar load during foot contact. It is assumed that the dorsiflexion of the first metatarsophalangeal joint during push off contributes to the increase in foot stiffness in order to support forward propulsion.1520860078895092480application/pdfdepartmental bulletin pape
Reaction Times of The Gyaku- and Kizami- tsuki in female collegiate karate athletes : Analysis from ground reaction forces and kinematics
J-GLOBAL ID : 201101073728331279J-GLOBAL ID : 201801007052633411J-GLOBAL ID : 202201012804701108J-GLOBAL ID : 201801009314123820J-GLOBAL ID : 202101004237845144The purpose of this study was to analyze the kinematics and kinetics of how karate players respond to LED light stimuli and opponents when performing kizami- and gyaku-tsuki. The effects of the distance between the attacker and the opponent, and the differences in event types and levels on the reaction time were also examined. Thirteen female university student karate athletes ïŒkumite international levelïŒnïŒ2, kumite college levelïŒnïŒ6, kataïŒnïŒ5ïŒ participated in this study. Fourteen motion capture cameras and three force plates were used to record kizami-tsuki and gyaku-tsuki movements to LED light stimuli and the opponent. Kinetics and kinematics analysis showed no difference in reaction time to LED light stimuli among kumite, kata, and competition levels, but international level kumite athletes tended to have the shorter reaction time to opponent's movements. In conclusion, our results suggest that international-level kumite players have an excellent ability to predict and judge the movements of their opponents.1520297128939472640application/pdfdepartmental bulletin pape
A study on the tradition of Judo : Focusing on âqualitative thoughts on traditional Japanese valuesâ
J-GLOBAL ID : 200901048993785165This study aimed to re-evaluate the diverse values of Judo from the perspective of physical techniques. It also attempted to clarify the various values in the Budo in order to further advance Judo while embracing its local and global characteristics.
ãThe dilution of the culture of modern Judo is gaining attention as one of its problems, and the concepts of competition and victory are typical examples. However, the competitive nature of Judo is a valuable concept. Therefore, its traditional nature has to be maintained while including competitiveness. âHuman developmentâ is closely related to the tradition of Budo, and an attempt at âhuman developmentâ is closely linked to the traditional idea of education in Japan. Thus, it clearly exhibits exposure to valuable concepts in conjunction with the learning of physical skills. In addition, it can be regarded as an activity that represents the culture of a âPathâ that involves multifaceted growth at the same time. A discussion of aspects like that will also reveal some of the qualitative thoughts on traditional values unique to Japan.1520860078895597568application/pdfdepartmental bulletin pape
The dynamics of muscle activity in the aqua treadmill (WWS)
J-GLOBAL ID : 200901006236324733J-GLOBAL ID : 200901009625371738J-GLOBAL ID : 201801018102090530application/pdfdepartmental bulletin pape
Political Change and Buddhist Monks in 1950s Sri Lanka
J-GLOBAL ID : 200901018227773990ç®ã次
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A Report on the Performance of Kokushikan Universityâs Judo Team : 2022 All-Japan Judo Championships
J-GLOBAL ID : 201701013784237740J-GLOBAL ID : 200901081246796295J-GLOBAL ID : 202301016670669019J-GLOBAL ID : 201301094229252459J-GLOBAL ID : 200901011933088480application/pdfdepartmental bulletin pape
Organization Development viewed from the Evolution of Orgzanization Theories
J-GLOBAL ID : 200901099054341010ç®ã次
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