- 著者
- 山田 洋 小河原 慶太 内山 秀一 伊藤 栄治 宮崎 康文 宮崎 誠司
- 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.72, no.3, pp.201-213, 2023-06-01 (Released:2023-05-10)
- 参考文献数
- 19
This study aimed to examine the effects of college baseball pitching on movement, performance, physical strength, and physiological and psychological functions of pitchers. The participants were 10 right-handed male pitchers from the University baseball team. The number of pitches were 15 per inning and 135 per nine innings. Ball speed and accuracy were measured for each pitching. The grip strength, back muscle strength, and standing long jump were measured before and after all pitches. Blood lactate levels were measured before pitching, at the end of the 5th and 7th innings, and at 3rd, 6th, and 9th minutes after pitching. The participant’s heart rate and subjective exercise intensity were measured at the beginning and end of each inning using the Borg scale measurement. Five high-speed cameras were used to capture the pitching motions. The displacement of the center of gravity, lower and upper limb joint angles, and the speed of each segment were calculated. The baseball speed and accuracy did not change with the increased number of pitches. However, the grip strength decreased. Although blood lactate and heart rate were not altered, subjective exercise intensity was increased. The lower limb kinematics remained unchanged; however, elbow height was reduced in the upper limb. These results suggest that highly competitive pitchers experience subjective fatigue with the increased number of pitches, however, they maintain pitch performance, speed, and accuracy without altering whole-body physiology and lower-body function and form.
1 0 0 0 OA カーボンファイバープレート内蔵厚底ランニングシューズによるランニングエコノミーへの影響
- 著者
- 丹治 史弥 栗原 俊 西出 仁明 両角 速 山田 洋 宮崎 誠司
- 出版者
- ランニング学会
- 雑誌
- ランニング学研究 (ISSN:09194312)
- 巻号頁・発行日
- vol.34, no.1.2, pp.1-12, 2023-03-31 (Released:2023-06-09)
- 参考文献数
- 31
The choice of running shoes contributes to the running economy(RE), which is one of the important capacities for distance running performance. Recently, the development of running shoes with high compliance and resilience midsoles and integrated carbon-fiber plates has led to improvements in long-distance running performance. This study aimed to compare the biomechanical variables when wearing carbon-fiber plate running shoes(Nike ZoomX Vaporfly Next%: VN)and conventional running shoes (Nike Zoom Streak 7: ST7)and investigate the factors contributing to the improvement in RE. 10 long-distance runners evaluated the RE, lower limb joint angle, vertical ground reaction force, ground contact time, step frequency, and surface electromyogram with wearing two running shoes(VN and ST7). Notable results were that 1)the VN was a 5.7% on average better RE than the ST7, 2)the ankle joint was more in a plantar flexion position throughout the support phase in the VN than the ST7. Other biomechanical variables were not significantly different between the running shoes. In addition, the most RE improvement(17.2%)runner with the VN compared to the ST7 showed > 1SD difference in dorsi-flexion of the ankle joint, flexion of the hip joint, and an internal rotation of the ankle joint compared to an average of the ten runner’s lower limb joint angle at the support phase. On the other hand, one runner decreased RE(4.3 %)when wearing the VN compared to the ST7. This runner showed > 1SD difference in an internal rotation of the knee joint throughout the support phase compared to an average of the ten runner's lower limb joint angle. These results suggest that the VN provide superior energy returns, which contributes to the improvement of RE, but not all runners can benefit from the improvement of RE by wearing the VN.
1 0 0 0 OA MDQスコアからみた女性柔道選手における月経随伴症状と生活習慣の関連
- 著者
- 位髙 駿夫 藤平 杏子 大川 康隆 宮崎 誠司 塚田 真希
- 出版者
- The Society of Physical Therapy Science
- 雑誌
- 理学療法科学 (ISSN:13411667)
- 巻号頁・発行日
- vol.37, no.4, pp.369-373, 2022 (Released:2022-08-20)
- 参考文献数
- 22
〔目的〕本研究は,女性柔道選手の月経期間別の月経随伴症状と生活習慣との関連性について明らかにすることを目的とした.〔対象と方法〕18歳から21歳までの女性柔道選手169名を対象とし,プロフィール,柔道実施状況,生活習慣で構成された質問紙と月経随伴症状に関する質問紙(MDQ)調査を実施した.〔結果〕月経前および月経中のMDQの総得点と平日の睡眠時間との間に負の相関が認められた.平日および休日の睡眠時間が短い女性柔道選手は月経随伴症状の得点が高値を示す関係性が明らかとなった.〔結語〕女性柔道選手において月経前や月経中は月経随伴症状が悪化することから,睡眠時間をはじめとした生活習慣への注意が必要である.
1 0 0 0 柔道選手における肩鎖関節脱臼放置例の検討
- 著者
- 宮崎 誠司 浜田 一寿 中島 知隆 内山 善康 福田 宏明
- 出版者
- Japan Shoulder Society
- 雑誌
- 肩関節 = Shoulder joint (ISSN:09104461)
- 巻号頁・発行日
- vol.22, no.3, pp.371-374, 1998-09-30
- 参考文献数
- 9
- 被引用文献数
- 1
In order to evaluate the residual disabilities caused by chronic acromioclavicular (A-C) dislocations,14 Judo athletes (7 cases of Grade II and 7 cases of Grade III) injuries were reviewed. Clinical examinations and isokinetic muscle strength of internal/external rotation and of flexion/extension in the supine position were examined. In Grade II, there were no clinical symptoms or differences in isokinetic muscle strength between the involved and uninvolved sides.<BR>In Grade III,4 cases had motion pain and 3 cases felt weakness in Judo practice. In Grade III the A-C joints, the directions of instability were horizontal as well as vertical. Work magnitudes of extension (60 deg/sec) and those of external rotation at 30° abduction (60 and 120 deg/sec)were less in the involved side than those in the uninvolved sides. Isokinetic muscle strength of extension and external rotation at 30° abduction (60 deg/sec) in Grade III was smaller than that in Grade II. Characteristically, the involved side of Grade III cases had less power than the uninvolved side in flexion/extension above the horizontal level. In Grade III, the torn A-C capsular and coracoclavicular ligaments produce more unstable A-C joints than in Grade II.<BR>During an arm elevation above the horizontal level, more than 3/4 of a clavicle rotation occurs and is controlled by the trapezoid ligament. Unstable A-C joint causes an unstable scapula, leading to muscle weakness of the shoulder, especially in flexion/extension above the horizontal level. The current study showed that the Grade III had patterns in the flexion/extension which were different in the involved and uninvolved sides.<BR>This could explain why there is weakness above the horizontal level in Grade III injuries. Therefore, an operation is recommended for Grade III A-C injuries of Judo athletes.
- 著者
- 内山 善康 浜田 一寿 中島 知隆 福田 宏明 宮崎 誠司
- 出版者
- Japan Shoulder Society
- 雑誌
- 肩関節 = Shoulder joint (ISSN:09104461)
- 巻号頁・発行日
- vol.22, no.3, pp.537-541, 1998-09-30
- 参考文献数
- 10
- 被引用文献数
- 6
The purpose of this study was to compare the limitations between the external rotation (ER) of athletes in overhand sports players (OS) and judo players (JP) with traumatic anterior shoulder instability after a modified inferior capsular shift (MICS)procedure. Thiryt-two shoulders of OS and 38 shoulders of JP were operated on using MICS and were observed for more than 12 months postoperatively.<BR>Twenty-six dominant and 6 nondominant shoulders were examined directly. There were 21 “tsurite” (lapel grip) and 17 “hikite” (sleeve grip) shoulders in JP. The average ages at surgery of OS and JP were 22.9 and 21.5 years old, respectively.<BR>All the patients had had an episoders of sports injury. There were no recurrences in OS, but 3 (8%)in JP. In OS,12% of the dominant shoulders and 67% of the no ndominant sides after MICS could perform better their sports activities than preoperatively. The ratios of JP which showed a better performance were 15% of operated “tsurite” and 52% of the operated “hikite” sides. The average decrease of ER motion in dominant shoulders of OS was 18.8°in the hanging position and 14.5°in 90°of abduction. In JP, “tsurite” sides had 3.3°and 4.8°of limitation on 0°and 90°of abduction, respectively. There was on other limitation of ROM in either OS or JP, postoperatively. Based on comparisons of ER motion between OS and JP showing better sport activity, ER at 90°abduction should be 80°for the dominant side of OS and 85°for the “tsurite” side of JP in order to get a better performance, postoperatively. Thus, the “tsurite” side in JP should be treated in the same manner as that of the dominant side of OS.
1 0 0 0 内股に関するバイオメカニクス的研究
1 0 0 0 柔道の内股における体幹の傾斜角度の変化について
- 著者
- 八百 則和 木村 季由 西村 一帆 宮崎 誠司 原 将浩 力丸 静香 丹羽 美智子 古泉 佳代
- 出版者
- 東海大学スポーツ医科学研究所
- 雑誌
- 東海大学スポーツ医科学雑誌 (ISSN:09153659)
- 巻号頁・発行日
- no.29, pp.25-30, 2017
1 0 0 0 IR 微弱電流刺激(MENS)の臨床的効果
- 著者
- 宮崎 誠司 佐藤 宣践 橋本 敏明 白瀬 英春 山下 泰裕 中西 英敏 上水 研一朗 恩田 哲也 中村 豊
- 出版者
- 東海大学
- 雑誌
- 東海大学紀要. 体育学部 (ISSN:03892026)
- 巻号頁・発行日
- vol.37, pp.91-95, 2007
- 被引用文献数
- 1
A clinical evaluation using lysholm score was done about micro current electric stimulation (MENS) to the sports injury. The reduction of the pain was seen at the early stage of medial collateral ligament injury of the knee. The motor function was improved at the early stage, compared with the group that doesn't enforce MENS. In 56 days after injury, we evaluate by Lysholm score. In using MENS eight all examples were excellent (mean 97.9), on the other hand, without using MENS excellent was only one example in ten(mean93.0). The effect of MENS was thought to be the one by the injury current. There is a possibility of taking part in the electron transport system for the ATP synthesis.