氏名

トウ トウケイコ

杜 唐慧子

職名

助教 (https://researchmap.jp/7000017507/)

所属

(スポーツ科学部)

学歴・学位

学歴

2011年09月-2016年01月 早稲田大学 スポーツ科学研究科
2005年09月-2011年08月 上海体育学院 運動人体科学

学位

博士 課程 早稲田大学 スポーツ科学

修士 課程 上海体育学院

研究分野

キーワード

バイオメカニクス、肩関節、水泳

科研費分類

複合領域 / 健康・スポーツ科学 / スポーツ科学

論文

Critical scapula motions for preventing subacromial impingement in fully-tethered front-crawl swimming

杜唐慧子

Sports Biomechanics査読有り2019年07月-

DOI

詳細

掲載種別:研究論文(学術雑誌)ISSN:1752-6116

概要:The aims were to quantitatively describe the coordinated motions of the scapula and humerus during fully tethered front-crawl strokes and to test the hypothesis that scapular motion functions to reduce the risk of subacromial compression. An electromagnetic tracking device was used to record the kinematics of the thorax, humerus, and scapula on the dominant side in 17 collegiate swimmers. Because evidence suggests that compressive force develops under the coracoacromial arch when the arm elevated above 90º of arm elevation is maximally internally rotated, such shoulder configurations were measured for each participant. A series of scapulohumeral angles measured with this procedure were compared with the corresponding angles exhibited during fully tethered front-crawl swimming to identify the scapulohumeral angles indicative of subacromial compression. Additional comparison was performed without taking the scapular motion into account. Scapulohumeral angles indicative of subacromial compression were observed in 15 participants, accounting for 7.7 ± 7.1% of stroke cycle time. This duration was significantly less than the corresponding duration identified without having taken the scapular motion into account (22.6 ± 13.8% of stroke cycle time). The difference was due primarily to the unique movements of the scapular to accommodate demands imposed by stroke motions, and this supported the hypothesis.

Accuracy and reliability of a method for measuring three-dimensional articular motions of the shoulder complex during swimming

杜唐慧子

Sports Biomechanics査読有り2019年11月-

DOI

詳細

掲載種別:研究論文(学術雑誌)ISSN:1752-6116

概要:This technical report introduces a method for measuring the three-dimensional articular motions of the shoulder complex during swimming. Eleven collegiate swimmers performed front-crawl strokes at maximal effort and their shoulder motions were measured with an electromagnetic tracking device. Sensors were attached to the sternum, acromia and humeri to determine their relative positions and orientations. A cart carrying the components of the device was pushed back-and-forth along the poolside, so that the sensors attached to the swimmer could be detected within the electromagnetic field. The stroke-to-stroke reliability of the measured articular motions was determined for each swimmer. The accuracy of the device was tested by measuring the relative positions and orientations of multiple sensors fixed on a wooden stick moving above and below the water surface. The measured values were compared with pre-determined fixed values. The coefficient of variance for the joint angles between stroke cycles was <10% of the total range of movement. Within a range of 1282 mm from the transmitter, the root-mean-square error of measurement was 0.7° for orientation and 4 mm for position, both of which were superior to optical measurements. This method is accurate and reliable for measuring the kinematics of the shoulder complex during swimming.

肢・体幹の関節連動運動にみられる短距離クロール泳選手の特徴

杜唐慧子

シンポジウム: スポーツ・アンド・ヒューマン・ダイナミクス講演論文集2019年10月-

詳細

掲載種別:研究論文(研究会,シンポジウム資料等)ISSN:2432-9509

概要:Swimming techniques require a fine coordination of various joints to maximize performance and reduce the risk of injury. A large number of variables are necessary to describe the coordination of multiple joints during swimming strokes. Since joints move in harmony with other joints during swimming, it should be possible to describe the coordination of multiple joint motions with a fewer characteristic variables. The purpose of the study was to find the characteristic variables to describe the coordination of multiple joint motions of front-crawl sprint swimmers. Twenty-four members of collegiate swimming team were asked to swim a front-crawl technique with their maximal effort in a 25m course. An electromagnetic tracking device was used to record the joint angles in three-dimensions at 240 Hz. Three stroke cycles were extracted for each swimmer and the total of 72 stroke cycles were analyzed. Sixteen variables including the joint angles of elbow, shoulder complex and torso were calculated for each stroke cycles. A principal component analysis was used to simplify the variables of joint angles for each stroke cycles. The scores of principal components were compared between the stroke cycles performed by the front-crawl sprint swimmers and the others. Results showed that 6 principal components account for 77% of the variance. Front-crawl sprint swimmers showed a smaller glenohumeral joint elevation angle, less rotation range of the upper limb and torso lateral tilt mainly in one side during the pull phase of stroke cycles.

3D Scapular Kinematics and Scapulohumeral Rhythm in Swimmers and Baseball Pitchers

杜唐慧子

ISBS-Conference Proceedings Archive査読有り2018年05月-2018年09月 

詳細

掲載種別:研究論文(国際会議プロシーディングス)

概要:The present study was conducted to describe characteristics of scapular kinematics and scapulohumeral rhythm (SHR) in baseball pitchers and swimmers. The participants were 16 swimmers, 19 baseball pitchers and 8 non-athletes. Each participant was asked to perform three tasks, arm abduction, shoulder horizontal abduction (HA) and shoulder internal/ external rotation (IR/ER). An electromagnetic tracking device was used to record the 3D data of shoulder complex. The SHR during the arm abduction and the range of motion for shoulder complex were determined for each task. The results showed that swimmers had significantly greater ranges of shoulder HA and scapular upward rotation while pitchers had a significantly greater range of shoulder ER and a significantly smaller range of shoulder IR. There was no obvious difference in SHR between the groups.

Three-dimensional torso motion in tethered front crawl stroke and its implications on low back pain

杜唐慧子

Journal of Applied Biomechanics査読有り32(1)p.50 - 582016年02月-2016年02月 

DOIScopus

詳細

掲載種別:研究論文(学術雑誌)ISSN:10658483

概要:© 2016 Human Kinetics, Inc.Low back pain is a common problem among competitive swimmers, and repeated torso hyperextension is claimed to be an etiological factor. The purpose of this study was to describe the three-dimensional torso configurations in the front crawl stroke and to test the hypothesis that swimmers experience torso hyperextension consistently across the stroke cycles. Nineteen collegiate swimmers underwent 2 measurements: a measurement of the active range of motion in 3 dimensions and a measurement of tethered front crawl stroke at their maximal effort. Torso extension beyond the active range of torso motion was defined as torso hyperextension. The largest torso extension angle exhibited during the stroke cycles was 9 ± 11° and it was recorded at or around 0.02 ± 0.08 s, the instant at which the torso attained the largest twist angle. No participant hyperextended the torso consistently across the stroke cycles and subjects exhibited torso extension angles during tethered front crawl swimming that were much less than their active range of motion. Therefore, our hypothesis was rejected, and the data suggest that repeated torso hyperextension during front crawl strokes should not be claimed to be the major cause of the high incidence of low back pain in swimmers.

Three-dimensional motion of shoulder complex during front crawl swimming

杜唐慧子

ISBS-Conference Proceedings Archive査読有り34(1)p.569 - 5722016年-2016年

詳細

掲載種別:研究論文(国際会議プロシーディングス)ISSN:1999-4168

概要:The purposes of the study were to describe glenohumeral joint motion during front crawl swimming and to determine if the glenohumeral joint motion could be predicted by the humero-thoracic motion using linear regression model. Fourteen swimmers were asked to perform a resisted front crawl swimming. Three-dimensional motions of shoulder complex were measured with an electromagnetic tracking devise. The results showed that humerus and scapula did not move in a set ratio during front crawl swimming and the glenohumeral joint motion could not be predicted accurately from the humero-thoracic motion. A characteristic movement pattern was observed in the catch phase in which the humerus moved caudally behind the scapular plane while moving in front of the torso. This movement pattern may facilitate internal rotation of the shoulder to execute the catch and pull vigorously.

Subacromial impingement in front-crawl swimming: a preliminary report

杜唐慧子

ISBS-Conference Proceedings Archive査読有り2013年-2013年

link

詳細

掲載種別:研究論文(国際会議プロシーディングス)ISSN:1999-4168

概要:The purposes of the present study were to measure the glenohumeral joint motion exhibited during front-crawl swimming and to re-examine the instances at which the subacromial structures were experiencing impingement. A series of glenohumeral configurations indicative the impingement were measured to define the so called “boundary range of motion,” which was used to identify if the glenohumeral configurations exhibited at any instant during swimming is indicative of impingement. A simplified kinematic model composed of right scapula, right humerus and thorax was used to describe the shoulder configuration for three collegiate swimmers. The results showed that impingement occurred for 0~ 12% of the stroke time during the front-crawl for the three subjects.

Prediction of Energy Expenditure for Adolescents Based on Gait Tactile Sensation Parameters

杜唐慧子

Chinese journal of sports medicine査読有り31(2)p.101 - 1052012年-2012年

詳細

掲載種別:研究論文(学術雑誌)

講演・口頭発表等

上肢・体幹の関節連動運動にみられる短距離クロール泳選手の特徴

杜唐慧子

日本機械学会 シンポジウム: スポーツ工学・ヒューマンダイナミクス20192019年10月25日

詳細

口頭発表(一般)開催地:福岡

Special shoulder movement in tethered swimming

杜唐慧子

Sport and Innovation Conference招待有り2019年10月02日

詳細

国際会議口頭発表(一般)開催地:ブダペスト

牽引泳における肩複合体運動の特徴

杜唐慧子

日本体育学会第70回大会2019年09月10日

詳細

国内会議口頭発表(一般)開催地:横浜

概要: 牽引泳は競泳選手が用いる水中パワートレーニングのひとつである。牽引泳時に選手が発揮するパワーは通常泳時よりも大きいことから、上肢の関節にはより大きな力が作用し、それに応じて肩複合体の運動リズムも変化するものと考えられる。そこで、本研究の目的は通常のクロール泳と牽引泳における肩複合体運動を比較することとした。男子水泳選手17名が牽引泳を、10人が通常のクロール泳を行った。電磁ゴニオメーターを用いて遊泳中の胸郭、肩甲骨、上腕骨の三次元運動を計測した。計測値を1ストロークの所要時間で正規化し、5%ストロークタイム毎に条件間比較を行った。分析の結果、胸郭に対する上腕の運動には条件間に有意差は認められなかった。一方、肩甲骨の運動(上方回旋角と後方傾斜角)には入水からストレッチまでの局面において有意差(牽引泳―通常遊泳時>9°、p<0.05)が認められた。この肩甲骨運動の変化は肩甲上腕関節をゼロポジションに近づける効果をもたらすものである。したがって、この結果は牽引泳時には腱板筋が効果的に機能し、安定性の高い肩甲上腕関節肢位で大きなパワーを発揮していたことを示唆するものである。

Three-dimensional kinematics in front-crawl swimming and the implications to chronic injuries

杜唐慧子

International Conference on Sports and Medical Technology(Ministry of Science and Technology, Taiwan)招待有り2018年09月29日

詳細

国際会議口頭発表(招待・特別)開催地:台湾

3D Scapular Kinematics and Scapulohumeral Rhythm in Swimmers and Baseball Pitchers

杜唐慧子

the 36th International Conference on Biomechanics in Sports(International Society of Biomechanics in Sports)2018年09月10日

詳細

国際会議ポスター発表開催地:ニュージーランド・オークランド

クロール泳に適応した肩甲上腕リズムの検討

日本体育学会第68回大会2017年10月09日

詳細

国内会議

Three-dimensional motion of shoulder complex during front crawl swimming

Tanghuizi Du

2016年07月

詳細

国際会議口頭発表(一般)

クロール泳における体幹の三次元運動と慢性腰痛

杜唐慧子

2015年08月

詳細

国内会議口頭発表(一般)

バタフライ泳法と平泳ぎにおける肩峰下インピンジメントの検討

杜 唐慧子

第23回日本バイオメカニクス学会大会2014年09月

詳細

国内会議口頭発表(一般)

A new method for measuring swimming techniques with an electromagnetic tracking device

Tanghuizi Du

The 9th International Sport Sciences Symposium on "Active Life"2013年12月

詳細

国際会議シンポジウム・ワークショップ パネル(公募)

Subacromial impingement in front-crawl swimming: a preliminary report

Tanghuizi Du

31 International Conference on Biomechanics in Sports2013年07月

詳細

国際会議口頭発表(一般)

The Instance of Subacromial Impingement during Front Crawl

Tanghuizi Du

2013年02月

詳細

国際会議シンポジウム・ワークショップ パネル(公募)

Combined Three-Dimensional Torso Movement during Front Crawl Swimming: a Preliminary Report

Tanghuizi Du

The 7th International Sport Sciences Symposium on "Active Life"2012年09月

詳細

国際会議シンポジウム・ワークショップ パネル(公募)

Three-Dimensional Torso Movement during Front Crawl Swimming

Tanghuizi Du

The 6th International Sport Sciences Symposium on "Active Life"2012年02月

詳細

国際会議シンポジウム・ワークショップ パネル(公募)

外部研究資金

科学研究費採択状況

研究種別:若手研究

How to swim faster? Focusing on the propulsive force and kinematics of swimming

2018年04月-2021年03月

研究分野:スポーツ科学

研究種別:研究活動スタート支援

An innovate approach for altering the stroke technique to protect swimmer's shoulder

2016年04月-2018年03月

研究分野:スポーツ科学

研究種別:特別研究員奨励費

水泳動作中におけるshoulder impingementの発生メカニズムの解明

2014年04月-2016年03月

研究分野:スポーツ科学

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