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 positions；each 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 （19 boys and 17 girls） 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 （five- or seven-step approach） and the method of goal setting （nomogram or a quick reference table showing percentages for height）. Results indicated the following. 1．The high jump class that introduced a selective learning environment in this study was effective in increasing motivation and interest in learning high jump. 2．It 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. 3．It 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 ID：202101013193905836目　次 第1章　はじめに 第2章　下水道事業における官民連携 第3章　PFI (コンセッション方式) の導入事例 第4章　おわりに1520016217210717952application/pdfdepartmental bulletin pape

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. 　Plantar 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. 　The 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 （kumite international level：n＝2, kumite college level：n＝6, kata：n＝5） 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 “qualitative thoughts on traditional Japanese values”

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. 　The 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. “Human development” is closely related to the tradition of Budo, and an attempt at “human development” 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 “Path” 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 : 200901018227773990目　次 はじめに 1　仏教僧の組織化とEBP 2　ウィジェーワルダナ家とケラニヤ寺院 3　ブッダラッキタとバンダーラナーヤカ政権 4　グナーナシーハと政治 5　ウィマラワンサとBC協定 おわりにapplication/pdfdepartmental bulletin pape

A Report on the Performance of Kokushikan University’s 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 : 200901099054341010目　次 1．問題意識と本研究の目的 2．ODの学術的背景 3．ODの基本的着想 4．ODの実践的技法 5．OD型変革モデルと若干の考察 6．暫定的結論1520016217210723968application/pdfdepartmental bulletin pape