著者

前田 奎 大山卞 圭悟 関 慶太郎 水島 淳 広瀬 健一 尾縣 貢

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

pp.18002, (Released:2019-01-21)

参考文献数

38

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The purpose of this study was to investigate, using path analysis, causal relationships among motion factors for achieving a high release velocity in the male discus throw. The throwing motions of 61 male discus throwers were analyzed using three-dimensional motion analysis. Variables such as release velocity, velocities gained by each body segment, body segment velocity, body angle and angular velocity were obtained. The path model indicating the causal relationships among these factors was constructed by path analysis. The main results were as follows: Influences of velocities gained by each body segment on release velocity were largest for the arm, followed in order by the trunk and legs. Motion factors such as weight shift, acquisition of the velocity of the center of gravity, sweeping the legs, rotations of the hip and shoulder, twisting and untwisting of the trunk, acquisition of the velocity of the right knee and extension of the left knee had direct or indirect influences on the velocities gained by each body segment. Motion factors in the path model revealed causal relationships along the time sequence of the throwing motion. In addition, the path model in this study indicated the cause and effect structure of the throwing motion by which Japanese male discus throwers were able to achieve a high release velocity. The results of this study can be utilized for technical coaching of the discus throw based on causal relationships.

著者

水島 淳 梶谷 亮輔 九鬼 靖太 柴田 篤志 前田 奎 大山 卞 圭悟 尾縣 貢

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.66, pp.703-714, 2021 (Released:2021-10-20)

参考文献数

28

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Introduction: The purpose of this study was to investigate the effects of a 4-week barefoot sprint training program on sprint biomechanics and stretch-shortening cycle jump ability. Methods: Fourteen children with no experience in barefoot sprinting were randomly assigned to 1 of 2 groups: a barefoot training group (3 boys and 4 girls; age, 11.0 ± 0.8 years-old; height, 143.1 ± 8.4 cm; body mass, 35.4 ± 5.6 kg; shoe mass, 0.17 ± 0.02 kg) and a control group (3 boys and 4 girls; age, 11.0 ± 0.8 years-old; height, 142.6 ± 8.2 cm; body mass, 34.4 ± 6.4 kg; shoe mass, 0.18 ± 0.01 kg). The 4-week intervention consisted 40 minutes of sprint training per weekly session using the allocated footwear. Before and after the intervention, 2-dimensional biomechanical analysis of the 50-m maximal sprint under both shod and barefoot conditions, and the countermovement jump and 5 repeated rebound jumping tests were performed by both groups. Pre- to post-test changes in spatio-temporal parameters and sprint kinematics, and jump heights for both jump types, and the contact time and rebound jump index for the rebound jump, were analysed using 2-way mixed ANOVA. Results and Discussion: After the 4-week intervention, a higher step frequency (p <0.01), a longer step length (p <0.05), and a higher sprint velocity (p <0.01) were observed in the barefoot training group, although no change was observed in the foot strike patterns and the swing leg velocity. The barefoot training group showed a higher rebound jump index (p <0.05) and a shorter contact time (p <0.01), while no differences were evident in the counter-movement jump height. These results suggest that 4-week barefoot sprint training seems to be an effective strategy for improving certain aspects of sprint biomechanics and for development of fast stretch-shortening cycle ability in children.

著者

木越 清信 尾縣 貢 田内 健二 大山 卞 圭悟 高松 薫

出版者

The Japanese Society of Physical Fitness and Sports Medicine

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.52, no.2, pp.167-178, 2003-04-01 (Released:2010-12-10)

参考文献数

16

被引用文献数

2 3

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本研究の目的は, 5秒間の全力ペダリング運動中における座位姿勢の変化が下肢筋群の筋活動および最大パワーに及ぼす影響を明らかにすることであった.被験者には, 大学陸上競技部に所属する男性10名 (21.5±1.9yrs, 178.8±4.7cm, 71.0±5.6kg) を用い, シートの高さを変化させた3種類 (High, MiddleおよびLow) の試技条件下で, それぞれ5秒間のペダリング運動を体重×0.1kpの負荷で行わせた.主な結果は以下の通りである.1.3回転の最大パワーは, HighがLowと比較して有意に高値を示した.2.骨盤傾斜角度は, HighおよびMiddleがLowと比較して有意に高値を示した.3.膝関節最大伸展角度および屈曲角度は, High, MiddleおよびLowの川頁に有意に高値を示した.4.脊柱起立筋および大腿二頭筋におけるmEMGは, HighがLowと比較して有意に高値を示した.5.Highにおいては, 3回転の最大パワーと大殿筋におけるmEMGとの間に有意な正の相関関係が認められた.また, 3回転の最大パワーと大腿二頭筋および外側広筋におけるmEMGとの間に正の相関傾向が認められた.以上の結果から, 5秒間の全力ペダリング運動において, シート高の変化による座位姿勢変化は下肢筋群, 特に股関節伸展筋群の筋張力および最大パワーに影響を及ぼす可能性があることが示唆された.

著者

前田 奎 大山卞 圭悟 関 慶太郎 水島 淳 広瀬 健一 尾縣 貢

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.64, no.1, pp.21-36, 2019-06-17 (Released:2019-06-25)

参考文献数

38

被引用文献数

1

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The purpose of this study was to investigate, using path analysis, causal relationships among motion factors for achieving a high release velocity in the male discus throw. The throwing motions of 61 male discus throwers were analyzed using three-dimensional motion analysis. Variables such as release velocity, velocities gained by each body segment, body segment velocity, body angle and angular velocity were obtained. The path model indicating the causal relationships among these factors was constructed by path analysis. The main results were as follows: Influences of velocities gained by each body segment on release velocity were largest for the arm, followed in order by the trunk and legs. Motion factors such as weight shift, acquisition of the velocity of the center of gravity, sweeping the legs, rotations of the hip and shoulder, twisting and untwisting of the trunk, acquisition of the velocity of the right knee and extension of the left knee had direct or indirect influences on the velocities gained by each body segment. Motion factors in the path model revealed causal relationships along the time sequence of the throwing motion. In addition, the path model in this study indicated the cause and effect structure of the throwing motion by which Japanese male discus throwers were able to achieve a high release velocity. The results of this study can be utilized for technical coaching of the discus throw based on causal relationships.

著者

前田 奎 大山卞 圭悟 尾縣 貢

出版者

日本コーチング学会

雑誌

コーチング学研究 (ISSN:21851646)

巻号頁・発行日

vol.35, no.1, pp.137-148, 2021

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<p>&nbsp;&nbsp;&nbsp;&nbsp;This study reports a coaching case of a male athlete (abbreviated to "athlete A" after this) who had a problem that left foot lands on the "under-rotation" position during second-turn phase in the discus throw. Since athlete A is the author, this study shows processes and reflections of self-coaching. First, one of the factors which caused "underrotation" was that athlete A was too self-conscious about quick touchdown of left foot during second-turn phase. Then, "turn drill without landing left foot" and "half-turn throw" were adopted as technical training to resolve "under-rotation". Although the number of trials which left foot lands on the "under-rotation" position reduced to a certain degree after both training, the problem had not been resolved completely. However, coaching processes showed in this study can contribute accumulation of a case study to construct general theory about resolving "under-rotation" in the discus throw.</p>

著者

水島 淳 前田 奎 広瀬 健一 大山卞 圭悟 尾縣 貢

出版者

The Japan Journal of Coaching Studies

雑誌

コーチング学研究 (ISSN:21851646)

巻号頁・発行日

vol.32, no.1, pp.71-78, 2018-10-20 (Released:2019-09-02)

参考文献数

21

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The aim of this study was to investigate the coaching beliefs of foreign high-performance track and field coaches in South East Asian countries. Five foreign coaches from Germany, Portugal, and New Zealand who represented Malaysia and Singapore in track and field events at the South East Asian Games in 2017 were asked to participate and were interviewed in this study. For the purposes of this research, the factors believed most important for coaching from the coach’s perspective were asked. The results showed that the coaching beliefs of foreign high-performance track and field coaches in South East Asian countries were divided into 3 categories. These were (a) goal oriented: developing athletes’ competence and developing athletes’ character; (b) coaches’ knowledge oriented: professional knowledge, and interpersonal and intrapersonal knowledge; and (c) coaching context oriented: coaching context.

著者

後藤 一成 崔 鳥淵 大山 卞 圭悟 高松 薫

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.48, no.4, pp.383-393, 2003-07-10 (Released:2017-09-27)

被引用文献数

1

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本研究では,レジスタンス運動における代表的な負荷方法であるStrength-up type(S-type)の運動とBulk-up type(B-type)の運動と負荷特性の相違を,動作中の筋放電量(実験A)と運動後の成長ホルモンの分泌量(実験B)の両面から検討することを目的とした。実験A,Bともに,被験者には健常な一般成人男性8名を用い,S-typeの運動とB-typeの運動をそれぞれ異なる日に行わせた。運動には,実験Aでは片脚による膝伸展運動を,実験Bでは両脚による膝伸展運動を用いた。実験A,Bともに,S-typeの運動においては1RMの90%の負荷を,セット間に3分間の休息をはさんで5セット行わせた。これに対して,B-typeの運動においては,1-3セットは1RMの80,60,40%,4-6セットは70,50,40%,7-9セットの間には30秒間,3-4,6-7セットの間には3分間の休息をはさんで,合計9セット行わせた。両運動ともに,いずれのセットにおいても動作は可能な限り反復させた。主な結果は以下の通りである。(1)各セットにおける反復回数は,S-typeの運動では3-8回の範囲にあったが,B-typeの運動では8-24回の範囲にあった(実験A,実験B)。(2)各セットにおける大腿直筋,外側広筋,内側広筋の%mEMGを平均化した値は,S-typeの運動では等尺性最大筋力発揮時の値とほぼ同様の水準が維持されていたのに対して,B-typeの運動では,3セットごとにみるとセット数が進むにつれてて低下したが,9セット全体でみると徐々に増加する傾向が認められた(実験A)。(3)各セットにおけるFmeam/%mEMGは,s-typeの運動ではいずれのセットにおいても一定の水準が維持されていたのに対して,B-typeの運動ではセット数が進むにつれて大きく低下する傾向が認められた。(4)運動後の血清成長ホルモン濃度は,B-typeの運動がS-typeの運動に比較して著しく上昇し,両運動間には運動後のいずれの時間においても有意差が認められた(実験B)。また,血中乳酸濃度も,B-typeの運動がS-typeの運動に比較して高値を示した(実験A,実験B)。(5)運動後における大腿囲の増加率は,B-typeの運動がS-typeの運動に比較して有意に高値を示した(実験A,実験B)。(6)運動後におけるMVCおよびMRFDの減少率は,いずれもB-typeの運動がS-typeの運動に比較して有意に高値を示した(実験B)。上述の結果は,S-typeの運動とB-typeの運動における負荷特性には,神経系の改善と筋肥大に関連した要因から見てきわめて大きな相違があること,およびこれらの相違が両運動のトレーニング効果の差に影響を及ぼす可能性があることを示唆するものである。

著者

山元 康平 宮代 賢治 内藤 景 木越 清信 谷川 聡 大山卞 圭悟 宮下 憲 尾縣 貢

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.59, no.1, pp.159-173, 2014 (Released:2014-06-13)

参考文献数

39

被引用文献数

2

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This study was conducted to clarify the relationship between race pattern and performance in the men's 400-m race. Using several video cameras, 154 male 400-m sprinters (45-46 s: 26, 47 s: 35, 48 s: 58, 49 s: 35) in official competitions were videotaped at a sampling rate of 59.94 Hz from the start to the finish. The split time at every 50 m from the start was calculated using the Overlay method, which analyzes the split time by superimposing an image of the 400-m race onto an image of the hurdles in a 400-m hurdle race. Each segment was defined as follows: First segment, from the start to the 100-m mark; 2nd segment, from the 100-m mark to the 200-m mark; 3rd segment, from the 200-m mark to the 300-m mark; 4th segment, from the 300-m mark to the finish. The results of regression analysis revealed significant correlations between the 400-m race time and the all of the segment times (r=0.589-0.887, p<0.001), the ratio of the time for the 3rd segment (r=0.290, p<0.001) to that of the 4th segment (r=0.218, p<0.01), the rate of change in running speed from the 1st to the 2nd segments (r=−0.317, p<0.001), and that from the 2nd to the 3rd segments (r=−0.271, p<0.01). However, the relationship between the 400-m race time and the deceleration index (the slope of the linear relationship between running speed and the number of segments from the peak running speed to the finish) was not significant (r=0.154, p=0.056). These results suggest that it is important to maintain running speed in the 2nd and 3rd 100-m segments to achieve high performance in the 400-m sprint.

著者

飯田 路佳 江藤 幹 大須賀 洋祐 辻本 健彦 清野 諭 大久保 善郎 大山卞 圭悟 田中 喜代次

出版者

公益社団法人 日本女子体育連盟

雑誌

日本女子体育連盟学術研究 (ISSN:18820980)

巻号頁・発行日

vol.33, pp.19-27, 2017 (Released:2017-05-18)

参考文献数

29

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本研究の目的は,体力測定や生理・生化学的指標から得られる 「活力年齢」 に着目し,中高年女性におけるリズム系運動がどのような健康増進効果をもたらすかについて,①BMIが25kg/m2以上の対象者(以下肥満群),②BMIが25kg/m2未満で明らかな疾患がない対象者(以下一般群),③リズム系運動習慣者(以下ダンサー群)の3群間において,活力年齢およびその構成要素を比較することにより,リズム系運動習慣者の健康体力水準の違いを明らかにすることとした。活力年齡は包括的健康度の指標として,健康と体力に関連する多項目(全身持久性体力,敏捷性,バランス,血圧,血中脂質,腹囲,肺機能など)から推定される。対象は,肥満群(平均年齢62.0±3.9歳)24名,一般群(平均年齢62.4±4.8歳)28名,およびダンサー群(平均年齢63.8±5.3歳)21名であった。ダンサー群の活力年齢(54.5±7.4歳)は,肥満群(67.6±4.6歳)および一般群(62.6±8.1歳)よりも有意に良好な値を示した(P<0.05)。このことから,長年にわたり日常的に,ダンスに代表されるリズム系運動を中心とした身体活動を継続していくことの有益性が認められた。

著者

屋代 澪 寺山 由美 大山卞 圭悟

出版者

日本コーチング学会

雑誌

コーチング学研究 (ISSN:21851646)

巻号頁・発行日

vol.34, no.2, pp.139-150, 2021-03-20 (Released:2021-05-27)

参考文献数

17

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In this research, we focused on continuous rapid movement and clarified the actual condition of dancers breathing. In addition, we examined differences in breathing due to differences in experience years, targeting female college student dancers with various dance experience history. As a result, the respiration of a dancer with a history of more than 15 years of experience was 80% the same breath, the difference in respiration became different as the years of experience decreased. In addition, the possibility that the dance genre experienced in the past and the experience of other sports was influenced was considered as the characteristic of respiration.

著者

前田 奎 大山卞 圭悟 広瀬 健一 尾縣 貢

出版者

日本コーチング学会

雑誌

コーチング学研究 (ISSN:21851646)

巻号頁・発行日

vol.31, no.2, pp.175-184, 2018-03-20 (Released:2019-09-02)

参考文献数

18

被引用文献数

2

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The purposes of this study were to clarify the influence of physical strength on throwing distance, and to estimate strength requirement for each target throwing distance of discus. The questionnaire method was used to investigate parameters about morphology and physical strength for 114 male discus throwers. Pearson’s correlation coefficient was calculated to investigate the relationships between the parameters and throwing distance. Then, multiple regression analysis was carried out to clarify influence of the parameters on throwing distance. As a result, all parameters correlated significantly to throwing distance. The parameters of morphology to have great influence on throwing distance were span of arm and body weight. The parameters of physical strength to have great influence on throwing distance were backward over head shot throw, snatch, standing five steps jump, 30m dash, in descending order. In addition, physical strength requirement corresponding to throwing distance of discus was gained by estimating the standard value of each parameter from the regression analysis. Strength requirement shown in this study has a high practicality for coaches and throwers in planning training programs and setting goals.

著者

田中 喜代次 大山卞 圭悟 根来 宏光 和久 夏衣 三輪 好生

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.71, no.3, pp.287-292, 2022-06-01 (Released:2022-05-10)

参考文献数

10

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Pelvic floor trauma developing into pelvic frailty is a significant concern in urogynecology or orthopedics. The majority of women who have experienced vaginal childbirth are affected, to a certain extent, by some form of pelvic floor damage, thereby eliciting substantial alterations of functional anatomy in the pelvic cavity which are manifested as urinary incontinence or pelvic organ prolapse (e.g., uterine prolapse). With the above in mind, medical researchers, continence experts, and continence exercise practitioners in the research areas of sports medicine and rehabilitation medicine believe that the coordinated activity of pelvic floor muscles, in association with the abdominal muscles, is a prerequisite for urinary and defecatory continence. Since the pelvic floor forms the base of the abdominal cavity, stronger pelvic floor muscles are crucial in maintaining such capabilities. Opposing action of the abdominal and pelvic floor muscles ensures that exercises for one may also strengthen the other. Appropriate abdominal maneuverability or logical exercise training of the abdominal muscles may thus be beneficial in maintaining not only strength but also coordination, flexibility, and endurance of pelvic floor muscles and abdominal muscles. Such exercises, collectively known as pelvic floor muscle training, may be effective for long-term pelvic cavity care and also in rehabilitating cases of pelvic floor dysfunction. Further research is needed, however, in determining whether pelvic floor muscle function can be truly enhanced or maintained by such exercises in cases of pelvic floor dysfunction and/or decreased urinary continence.

著者

吉田 孝久 大山 卞 圭悟 宮地 力 村木 征人

出版者

日本コーチング学会

雑誌

コーチング学研究 (ISSN:21851646)

巻号頁・発行日

vol.22, no.1, pp.29-39, 2008-12-31 (Released:2021-08-13)

著者

前田 奎 大山卞 圭悟 加藤 忠彦 水島 淳 山本 大輔 梶谷 亮輔 広瀬 健一 尾縣 貢

出版者

一般社団法人 日本体育学会

雑誌

日本体育学会大会予稿集

巻号頁・発行日

vol.69, pp.206_3, 2018

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<p> 円盤投の指導現場において、投てき動作前半の局面で円盤あるいは円盤を保持する腕を積極的に加速させる動作について、「円盤を走らせる」という表現が用いられている。この「円盤を走らせる」動作は、効率の良い投てき動作を遂行させる上で重要であると指導現場では認識されているが、実際に競技力の高い円盤投競技者ほど「円盤を走らせている」のか、という疑問が生じる。そこで本研究では、「円盤を走らせる」動作に関連すると考えられるパラメータとパフォーマンスとの関係について明らかにすることを目的とした。国内一般レベルから世界トップレベルまでの記録を有する男子円盤投競技者62名(記録:38.05 – 68.94m)を対象に、競技会での投てき動作を撮影し、3次元動作分析を行った。円盤の速度について確認したところ、第一両脚支持局面の変化量および右足離地時点について、対象者全体で見た場合、投てき距離との間に有意な正の相関関係が認められた。しかし、競技レベルごとに見ると、世界トップレベル競技者12名については、有意な負の相関関係が認められたのに対して、国内競技者50名については、有意な正の相関関係が認められた。</p>

著者

松尾 信之介 藤井 宏明 苅山 靖 大山 卞 圭悟

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.56, no.2, pp.287-295, 2011 (Released:2011-12-28)

参考文献数

18

被引用文献数

4

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Changes in the activity of hip adductor muscles with increased running speed were investigated in 4 male sprinters (personal best for 100 m: 10.58±0.26 s). The subjects were instructed to run at three different speeds (3-4 m/s, 6-8 m/s and 9- m/s). The surface electromyograms (EMGs) of 10 muscles around the hip joint were recorded, and whole-body motions were also filmed with a high-speed video camera (150 fps). Regardless of running velocity, the adductor longus (AL) showed activity concomitant with the rectus femoris when the hip joint was in extension. This suggested that the AL functioned as a hip flexor. On the other hand, the adductor magnus (AM) showed activity when the hip joint was flexed, suggesting that the AM assisted hip extensors such as the gluteus maximus. During high-speed sprinting, the AL was also activated when the hip joint was flexed. Similarly, the AM also showed activity when the hip joint was extended, corresponding to the latter half of the support phase. During the support phase, the AM may serve to stabilize the frontal plane by co-contracting with hip abductors such as the gluteus medius and tensor fasciae latae. Furthermore, the AL and AM showed increased activity while the hip was fully flexed and extended. This remarkable muscle activity around the flexion-extension reversal point during high-speed sprinting may stabilize the hip joint so that it resists dislocative force through the unique anatomical features of the hip adductor muscles, i.e. “shunt-” rather than “spurt-type” architectural characteristics.

著者

広瀬 健一 大山卞 圭悟 尾縣 貢

出版者

The Japan Journal of Coaching Studies

雑誌

コーチング学研究 (ISSN:21851646)

巻号頁・発行日

vol.30, no.1, pp.65-72, 2016-10-20 (Released:2019-09-04)

参考文献数

24

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This study reports a coaching case of a men's hammer throw athlete (abbreviated to “T athlete” after this) who had a problem with the acceleration of the hammer during the turn phase. T athlete’s personal record was 45.75m at the start of coaching. The theme of the training program was “hammer throw without using preliminary swings”. And T athlete practiced to accelerate the hammer during the turn phase. The training was carried out for about three and a half months. The procedure of the approach was divided into two stages. The approach ① was the 1st training process until T athlete learned “the hammer throw without using preliminary swings”. The approach ② was a training process after learning “the hammer throw without using preliminary swings”. During the approach ①, T athlete was able to learn the timing to accelerate the hammer from the right back during “the hammer throw without using preliminary swings”. In addition, the approach ② conducted the inclined plane of the hammer orbit of the actual throw to get closer to the one of “the hammer throw without using preliminary swings”. Finally, T athlete improved the personal record approximately 7m (45.75 to 52.67m). “The hammer throw without preliminary swings” is considered to be effective as one of the convincing training method to improve the turn technique of hammer throw.

著者

松尾 信之介 藤井 宏明 苅山 靖 大山 卞 圭悟

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

pp.1106020186, (Released:2011-06-07)

参考文献数

21

被引用文献数

4

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Changes in the activity of hip adductor muscles with increased running speed were investigated in 4 male sprinters (personal best for 100 m: 10.58±0.26 s). The subjects were instructed to run at three different speeds (3 4 m/s, 6 8 m/s and 9 m/s). The surface electromyograms (EMGs) of 10 muscles around the hip joint were recorded, and whole-body motions were also filmed with a high-speed video camera (150 fps). Regardless of running velocity, the adductor longus (AL) showed activity concomitant with the rectus femoris when the hip joint was in extension. This suggested that the AL functioned as a hip flexor. On the other hand, the adductor magnus (AM) showed activity when the hip joint was flexed, suggesting that the AM assisted hip extensors such as the gluteus maximus. During high-speed sprinting, the AL was also activated when the hip joint was flexed. Similarly, the AM also showed activity when the hip joint was extended, corresponding to the latter half of the support phase. During the support phase, the AM may serve to stabilize the frontal plane by co-contracting with hip abductors such as the gluteus medius and tensor fasciae latae. Furthermore, the AL and AM showed increased activity while the hip was fully flexed and extended. This remarkable muscle activity around the flexion-extension reversal point during high-speed sprinting may stabilize the hip joint so that it resists dislocative force through the unique anatomical features of the hip adductor muscles, i.e. “shunt-” rather than “spurt-type” architectural characteristics.

著者

山元 康平 広瀬 健一 前田 奎 大山 卞 圭悟 木越 清信 尾縣 貢

出版者

日本学生陸上競技連合

雑誌

陸上競技研究 (ISSN:09199918)

巻号頁・発行日

vol.2018, no.2, pp.11-20, 2018-06

著者

小野 真弘 徐 広孝 大山 卞 圭悟 西嶋 尚彦

出版者

日本体育測定評価学会

雑誌

体育測定評価研究 (ISSN:13471309)

巻号頁・発行日

vol.14, pp.1-10, 2015-03-31 (Released:2016-04-14)

参考文献数

23

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The purpose of this study was to create an achievement evaluation standard for men’s discus throwing. Subjects were 96 male discus thrower. The six trials of the discus throwing movement were recorded by camera, and the best record was used for analysis. Delphi method with 8 experts was implemented for characteristic causal analysis. Item characteristic and test characteristic were analyzed by IRT of 2PLM. Binary data (success=1, failure=0) was collected following the achievement decision criterion. The discus throwing was classified in the main of 4 motor phase (preparation, first turn, second turn, release).The discus throwing movement was configured 11 sub-movements and 34 items. A difficulty gap between the first turn and the release turn was large, there was a lot of items than other phases. Therefore, it is guessed that the first turn phase and the release phase are main phase and important for discus throwing. Unidimensionality, fitness to 2PLM and invariance of parameters were confirmed. The test reliability coefficient displayed a maximum value of 0.97 at an ability of -0.1. Ability range with the reliability coefficient of over 0.8 was between -0.2 to 2.0. It is means that the achievement evaluation standard of the discus throwing movement skill was high test precision. The correlation of the ability and the throwing record was 0.93 (p <0.05). The validity of this achievement evaluation standard was confirmed.

著者

山元 康平 内藤 景 宮代 賢治 関 慶太郎 上田 美鈴 木越 清信 大山卞 圭悟 宮下 憲 尾縣 貢

出版者

日本陸上競技学会

雑誌

陸上競技学会誌 = Japan journal of studies in athletics (ISSN:13483269)

巻号頁・発行日

no.14, pp.9-18, 2016