著者

村冨 浩太朗 太田 和希 小嶺 肇之 谷川 聡 山崎 一彦 前村 公彦

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.67, pp.715-729, 2022 (Released:2022-08-24)

参考文献数

45

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In the 400-m hurdles, race patterns based on physical fitness are an essential consideration for better performance. This study aimed to clarify the relationship between race patterns and physical fitness characteristics in male 400-m hurdlers. Thirteen collegiate 400-m hurdlers underwent measurement of maximal accumulated oxygen deficit (MAOD) and maximal oxygen uptake (VO2max). Race analyses were also conducted. The results revealed significant correlations between the 400-m hurdles running time and MAOD (r = −0.674, p <0.05) and VO2max (r = −0.607, p <0.05). There were also significant correlations between MAOD and running speed in the early phase (r = 0.839, p <0.001) and middle phase (r = 0.605, p <0.05), and between VO2max and running speed in the middle phase (r = 0.670, p <0.05) and late phase (r = 0.565, p <0.05). It was possible to classify the subjects into four types based on their physical fitness characteristics, and different race patterns were demonstrated based on fitness type. In particular, two subjects with similar times (C: aerobic type, E: anaerobic type) had very different pacing strategies. These results suggest that anaerobic and aerobic capacities affect the speed in each phase of the 400-m hurdles, and that therefore individual physical fitness characteristics consequently affect the entire race pattern. These findings will be valuable when applying the principle of individuality to training strategies for 400-m hurdlers.

著者

太田 和希 吉田 拓矢 小野 響也 前村 公彦 谷川 聡

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.67, pp.793-808, 2022 (Released:2022-09-29)

参考文献数

38

被引用文献数

2

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This study investigated the relationships between pelvic behavior and impulse of ground reaction force as well as leg backward swing velocity during the acceleration phase and full speed phase of sprint running. Eleven male sprinters performed 30-m and 60-m sprints from a crouching start at maximal effort. Threedimensional motion analysis was performed to investigate the relationships between pelvic behavior and impulse of ground reaction force as well as leg backward swing velocity during the acceleration phase and full speed phase of sprinting running. The angular displacement of the pelvic free leg side lateral flexion in the frontal plane showed a significant positive correlation with the propulsion and vertical impulse during the acceleration phase. Also, the lumbosacral free leg side lateral flexion angular impulse showed a significant positive correlation with the propulsion and vertical impulse during the acceleration phase. Additionally, the lumbosacral free leg side torsion angular impulse showed a significant positive correlation with the peak value of the free leg backward swing velocity during the full speed phase. Therefore, the results obtained during the acceleration phase suggest that the pelvic free leg side lateral flexion was able to increase the propulsion and vertical impulse, whereas during the full speed phase, the pelvic free leg side rotation contributed to increasing the free leg backward swing velocity.

著者

佐藤 三佳子 前村 公彦 髙畑 能久 森松 文毅 佐藤 雄二

出版者

公益社団法人 日本食品科学工学会

雑誌

日本食品科学工学会誌 (ISSN:1341027X)

巻号頁・発行日

vol.59, no.4, pp.182-185, 2012-04-15 (Released:2012-05-31)

参考文献数

26

被引用文献数

4 3

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カルノシン,アンセリンを高濃度に含有する鶏肉抽出物の摂取が,中高齢者の筋力にもたらす影響を検討した.中高齢者20名を2群に分け,鶏肉抽出物をそれぞれ一日量に1 500 mg(カルノシン,アンセリンの合計量として225 mg)もしくは0 mgを4週間継続摂取させた.摂取期間の前後に,等速性膝最大伸展力,膝最大屈曲力,および開眼片足立ちの保持時間を測定した.その結果,鶏肉抽出物群において,有意な膝最大伸展力の向上,開眼片足立ち保持時間の延長が認められた.これらの結果より,カルノシン,アンセリンを含有する鶏肉抽出物の摂取は,中高齢者の筋力の向上に有効であると考えられた.

著者

佐藤 三佳子 前村 公彦 森松 文毅 高松 薫

出版者

日本体力医学会

雑誌

体力科學 (ISSN:0039906X)

巻号頁・発行日

vol.55, no.6, 2006-12-01

著者

太田 和希 九鬼 靖太 奥平 柾道 吉田 拓矢 前村 公彦 谷川 聡

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.33, no.2, pp.145-159, 2020-03-20 (Released:2020-06-11)

参考文献数

38

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This study aimed to clarify the step variables and three-dimensional joint kinematics of the pelvis while increasing running speed on a treadmill. Sixteen male track and field athletes ran on an instrumented treadmill at three different running speeds: 4.0, 6.0, and 8.0 m/s. The step variables, such as step frequency, step length, contact time, and flight time, and the kinematic data of each running speed were recorded using a high-speed video camera (300 fps) and a Vicon T20 system (250 Hz). In addition, the pelvic angular displacement (Δ) was calculated by subtracting the minimum from the maximum values of the pelvic angle in the stance phase. The results were as follows: (1) Stride length and step frequency were significantly greater at higher running speeds. Although contact time was significantly shorter at the faster speeds, flight time was significantly shorter when transitioning from 6.0 to 8.0 m/s and from 4.0 to 8.0 m/s. (2) The pelvis of the swing leg side elevated from toe off to early half of swing phase with increasing running speeds. In addition, the pelvis of the stance leg side rotated to the swing leg side from mid stance phase to toe off with increasing running speeds. (3) Δelevation showed a significant negative correlation with step frequency but a significant positive correlation with stride length for each running speed. In addition, Δrotation showed a significant positive correlation with step frequency but a significant negative correlation with stride length at 8.0 m/s.     Therefore, increased pelvic elevation improves the stride when transitioning from a low to high speed, and increased pelvic rotation leads to a higher step frequency during the stance phase when running at 8.0 m/s. In addition, it was suggested that it is necessary to run at minimum 8.0 m/s for the pelvis to behave differently compared with running at slower speeds to learn the high speed running movement.

著者

新井 宏昌 渡邉 信晃 高本 恵美 真鍋 芳明 前村 公彦 岩井 浩一 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.49, no.4, pp.335-346, 2004-07-10 (Released:2017-09-27)

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A study was conducted to investigate the changes in anthropometric factors, physical fitness, and sprint ability and motion during the preparatory and competitive periods in two Japanese female elite sprinters. The measurements were carried out from the preparatory period to the competitive period three times. The main results were as follows : 1) In both athletes, sprint speed decreased after the preparatory period and increased in the competitive period. 2) High-intensity sprint training during the competitive period led to hypertrophy of the psoas major muscle and improvement of anaerobic power of the upper limbs. 3) During the competitive period in both athletes, the knee continued to flex after contacting, and took off while maintaining a minimal angle. These results suggest that the performance of elite sprinters changes through each training period, and is influenced by a combination of anthropometric factors, physical fitness and sprint motion.

著者

木越 清信 加藤 彰浩 前村 公彦

出版者

日本陸上競技学会

雑誌

陸上競技学会誌 (ISSN:13483269)

巻号頁・発行日

no.9, pp.7-13, 2011

著者

梶谷 亮輔 前村 公彦 山元 康平 関 慶太郎 尾縣 貢 木越 清信

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.63, no.1, pp.139-149, 2018-06-10 (Released:2018-06-20)

参考文献数

20

被引用文献数

1

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The aim of this study was to examine the validity, reliability, and utility of a method for evaluating the characteristics of the counter movement jump. Fifty-two male track and field athletes (sprinters or decathletes) jumped from a 30-cm platform and consciously changed their counter movement times. This study determined the counter movement time required to achieve the highest jump. The results are summarized as follows: 1. The waveform between the counter movement time and jumping height was an inverted U-shape. 2. It is normally accepted that the optimum counter movement time is determined via the jump test. 3. There was a significant correlation between the first test and the re-test in terms of the counter movement time. 4. Participants were classified into 5 groups based on their optimum counter movement times and highest jumping heights. These results suggest that the newly developed jumping test discussed in this study is a valid method for evaluating the characteristics of counter movement.

著者

前村 公彦 鈴木 康弘 高松 薫

出版者

社団法人日本体育学会

雑誌

体育學研究 (ISSN:04846710)

巻号頁・発行日

vol.50, no.4, pp.415-424, 2005-07-10

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The purpose of this study was to investigate the effects of sprint training (30-s maximal cycle ergometer sprinting) on bicarbonate buffering capacity and anaerobic capacity. Fourteen healthy males were assigned to either a training group (TG; n=7) or a control group (CG; n=7). The TG performed sprint training 2 days per week for 8 weeks. Before and after training, exercise performance (mean power) and excess CO_2 output (ExcessCO_2) were measured by 30-s maximal cycle ergometer sprinting, and maximal accumulated oxygen deficit (MAOD) was measured by 2-3 min exhaustive cycling test. Mean power (pre: 8.5±0.9W/kg, post: 9.3±0.8W/kg, p<0.01), ExcessCO_2 (pre: 93.4±12.8ml/kg, post: 102.3±12.2ml/kg, p<0.05), and MAOD (pre: 59.6±14.4ml/kg, post: 68.2±11.0ml/kg, p<0.01) were significantly increased after training in the TG. A significant correlation was demonstrated between percentage change in ExcessCO_2 and that in MAOD (r=0.755, p<0.05). Before and after training, mean power was significantly correlated with ExcessCO_2 and MAOD, respectively. These results suggest that the increase in ExcessCO_2 caused by sprint training may enhance the energy supplied from anaerobic metabolism, and improve short-duration intensive exercise performance.

著者

禰屋 光男 前川 剛輝 熊井 康こ 榎木 泰介 前村 公彦 岩原 文彦 菅生 貴之 川原 貴

出版者

日本体力医学会

雑誌

体力科學 (ISSN:0039906X)

巻号頁・発行日

vol.54, no.6, 2005-12-01