論文 - 仰木　裕嗣

Gender Differences in Metabolic Responses During Water Walking

Koichi Kaneda, Yuji Ohgi, Chiaki Tanaka

International Journal of Aquatic Research and Education （Human Kinetics）  5 （ 4 ） 421 - 431 2011年11月

査読有り

Quantifying and assessing biomechanical differences in swim turn using wearable sensors

仰木 裕嗣

Sports Technology 4 （ 3-4 ） 128 - 133 2011年

共著,  ISSN  1934-6190

　概要を見る

The swim turn makes up a substantial portion of the total swim time in competition, and efficient turns can determine finishing positions in many competitions. Swim turns can be a neglected area of performance gain. This is largely due to the difficulty in extracting performance measures that might lead to improvement. An inertial sensor was used to assess the different phases of the swimming turn and the data were then compared to the synchronised video data. As a case study, two elite swimmers, a competitive pool swimmer and an elite Triathlete, were compared as a demonstration of the technology as a potential tool for routine use. The participants were asked to perform their typical tumble turn at two velocities. Timing of the rotation relative to the turn’s push off was measured. The inertial sensor detected differences in rotation between the two swimmers tested. The sensor reported that push off occurred for the competitive swimmer before 908and for the Triathlete after 908of rotation and was confirmed by video footage. © 2011 Taylor &amp
Francis Group, LLC. All rights reserved.

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The effect of self-determined pace on muscle activity and leg motion in water walking and deep-water running

仰木 裕嗣

Journal of Science and Medicine in Sport 13   e86 2010年12月

共著

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バスケットボールのフリースローの結果予測時における熟練選手の視覚探索活

石橋千征，加藤貴昭，永野智久，仰木裕嗣，佐々木三男

スポーツ心理学研究 37 （ 2 ） 101 - 112 2010年

査読有り

　概要を見る

バスケットボールのフリースロー映像を観察する際の熟練者と非熟練者の眼球運動データから，シュート結果の予測を迅速にかつ効率よく評価するための選択的な視覚探索ストラテジーを示した

Development of a swimming motion display system for athlete swimmers’ training using a wristwatch-style acceleration and gyroscopic sensor device

仰木 裕嗣

Procedia Engineering （ELSEVIER SCIENCE BV）  2 （ 2 ） 3035 - 3040 2010年

共著, 査読有り,  ISSN  1877-7058

　概要を見る

6自由度慣性センサを手首に装着し，泳者の上肢の動きを再現した．軌道再現のあと,
水泳動作のコンピュータシミュレーションソフトウェアSWUMを用いて，生成される推進力の推定を試みた．

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Measurement of kinematics of a flying disc using an acceleromete

仰木 裕嗣

Procedia Engineering 2 （ 2 ） 30411 - 3416 2010年

共著, 査読有り

　概要を見る

飛翔するフライングディスク上に装着した加速度センサから得られる加速度データ
は運動座標系における加速度であり，この成分を分解することでフライングディスクの回転速度を算出した．

Ski jumping flight skill analysis based on high-speed video image

仰木 裕嗣

Procedia Engineering （ELSEVIER SCIENCE BV）  2 （ 2 ） 2381 - 2386 2010年

共著, 査読有り,  ISSN  1877-7058

　概要を見る

スキージャンプ飛翔中の選手の映像を側面より高速度カメラによって撮影し，その軌
道をもとにして流体力である抗力／揚力係数の変化を求めた．踏切直後の姿勢変化によって抗力／揚力の著しい違いが一流選手とそれ以外の選手間に観察された．

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Estimation Method for Energy Expenditure by Acceleration of Human Head during Water Walking

Kaneda K, Ohgi Y, Tanaka C

Biomechanics and Medicine in Swimming XI    366 - 368 2010年

査読有り

Measurement of kinematics of a flying disc using an accelerometer

Reno Koyanagi, Yuji Ohgi

ENGINEERING OF SPORT 8: ENGINEERING EMOTION - 8TH CONFERENCE OF THE INTERNATIONAL SPORTS ENGINEERING ASSOCIATION (ISEA) （ELSEVIER SCIENCE BV）  2 （ 2 ） 3411 - 3416 2010年

査読有り,  ISSN  1877-7058

　概要を見る

In this study, a tri-axial accelerometer was attached to a flying disc to measure the kinematics during flight. A subject performed disc throwing. High speed video cameras were used to capture release and end points to validate boundary measurements. Results of the acceleration wave showed a sinusoidal pattern during the flight phase. According to the results of an additional verification experiment, we classified components of the acceleration wave during the flight phase to estimate the angular velocity of the disc, and validated it using high speed video cameras. (C) 2009 Published by Elsevier Ltd.

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ITを活用した中高年向け生活習慣改善プログラムにおける継続要因に関する検討

宮川祥子, 小熊祐子, 大澤繁男, 仰木裕嗣

日本公衆衛生学会総会抄録集 67回   244 2008年10月

ISSN  1347-8060

Aerodynamic Study of Ski Jumping Flight Based on High-Speed Video Image

Masahide Murakami, Nobuhiko Hirai, Kazuya Seo, Yuji Ohgi

The Engineering of Sport 7 1   449 - 456 2008年07月

査読有り

Development and validation of an automated method to detect gait events using acceleration and angular rate

櫻井義久, 仰木 裕嗣, 丸山剛生

The Engineering of Sport 7 （International Sports Engineering Association）  7 （ 2 ） 359-366 2008年06月

研究論文（学術雑誌）, 単著, 査読有り

Aerodynamic study of ski jumping flight based on inertia sensors

仰木 裕嗣,平井 伸幸,村上　正秀, 瀬尾　和哉

The Engineering of Sport 7 （International Sports Engineering Association）  7 （ 2 ） 157-164 2008年06月

研究論文（学術雑誌）, 共著, 査読有り

Aerodynamic study of ski jumping flight phase

仰木 裕嗣

The Engineering of Sport 7, （International Sports Engineering Association）  7 （ 1 ） 449-456 2008年06月

研究論文（学術雑誌）, 共著, 査読有り

Measurement of the forces on ball in flight using built-in accelerometer

小柳　玲乃, 仰木 裕嗣

The Engineering of Sport 7 （International Sports Engineering Association）  7 （ 2 ） 1-7 2008年06月

研究論文（学術雑誌）, 共著, 査読有り

Visual Search strategies and expertise of touch football players while observing a scene-monitor video film

仰木 裕嗣

Journal of Sport & Exercise Psychology （North American Society for the Psychology of Sport and Physical Activity (NASPSPA).）  30 （ 30 ） S93-94 - S94 2008年06月

研究論文（研究会，シンポジウム資料等）, 単著, 査読有り,  ISSN  0895-2779

中高年向け生活習慣改善プログラム「インターネット健康コミュニティ」

宮川祥子, 仰木裕嗣, 大澤繁男, 山下光雄, 小熊祐子, 佐藤蓉子

ITヘルスケア 3 （ 1 ） 14 - 17 2008年05月

ISSN  1881-4808

　概要を見る

中高年を対象とした、ITを活用した生活習慣改善プログラム「インターネット健康コミュニティ」の概要とその効果について述べる。生活習慣改善は、長期に継続して取り組むこと、また本人が主体的に取り組むことが重要である。本プログラムのインターネットでの記録蓄積・コミュニケーションと対面型のコミュニケーションを併用しているという特徴は、食事・運動記録の蓄積によりセルフモニタリングが可能となること、対面でのコミュニケーションが継続的な記録の蓄積の原動力となりえることが示唆された。(著者抄録)

Modelling swimmer's speeds over the course of a race

島津秀康, 柴田里程, 仰木 裕嗣

Journal of Biomechanics （Elsevier）  41 （ 3 ） 549-555 2008年

研究論文（学術雑誌）, 共著, 査読有り

　概要を見る

A stochastic model of swimming speed over the course of a male 200 m freestyle swimming race is proposed. It builds on a dynamical model reflecting the trade-off between drag and propulsion in swimming. The parameters of the model are estimated from elapsed time data observed at several points along the pool. The model fits the data well and also provides a good description of the swimming strategies of each swimmer from phase to phase in the race. An individual factor measuring how much faster or slower the individual swims relative to the average swimming speed of the race is simultaneously estimated in the course of fitting the model. This factor is, as expected, closely related to the final outcome of the race.

1811 高速度カメラによるスキージャンパーに働く空気力の測定(S18 スポーツ流体工学,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

瀬尾 和哉, 村上 正秀, 仰木 裕嗣, 平井 伸幸

年次大会講演論文集 （一般社団法人日本機械学会）  2008   145 - 146 2008年

　概要を見る

We measured aerodynamic forces acting on real jumping flights in the take-off phase as well as a quasi-steady flight phase. The frame rate was 250 frames/s. It is concluded that the present aerodynamic force data derived from the image analysis are found to be in fair agreement with existing wind tunnel data for the cases of jumping flights in the quasi-steady flight phase. The aerodynamic data in the cases of relatively large forward leaning angle, which is typical in the initial phase of a jumping, could also be obtained. The lift in the take-off phase is relatively larger when compared with the quasi-steady flight phase.

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Development and validation of an automated method to detect gait events using acceleration and angular rate (P216)

Yoshihisa Sakurai, Yuji Ohgi, Takeo Maruyama

ENGINEERING OF SPORT 7, VOL 2 （SPRINGER VERLAG PARIS）  7 （ 2 ） 359 - + 2008年

査読有り

　概要を見る

The purpose of this Study was to develop and validate an automatic procedure using accelerometers and angular rate sensors for detecting exact gait events: heel contact (HC), toe contact (TC), heel off (HO) and toe off (TO). For this purpose, two miniature-sized light sensors were attached to the right shoe which measured triaxial acceleration and biaxial angular velocity of various positions of the shoe while ground reaction force and marker data were recorded at the same time as reference measurements. Healthy men walked on a walkpath at self-selected normal speed with the instrumented shoes on. An automated algorithm was developed to detect HC, TC, HO and TO from the acceleration and angular velocity signals, which were compared with reference data from force plates and markers. The results showed that our method demonstrated similar HC and TO to those with force plates and markers. Moreover, this method well detected stance phase duration. However, TC and HO differed among the three methods (force plates vs. markers vs. sensors). We concluded that the system using inertia sensors can identify TC and HO accurately and be used in gait analysis.