文献一覧: 岡田純一 (著者)

41 0 0 0 OA 腹部トレーニング7種目における腹直筋上部,腹直筋下部,外腹斜筋および大腿直筋の筋電図学的研究

著者: 半田徹加藤浩人長谷川伸岡田純一加藤清忠
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.54, no.1, pp.43-54, 2009-06-30 (Released:2009-11-05)
参考文献数: 27

The purpose of this study was to examine muscle activities during seven traditional different free dynamic exercises designed to strengthen the abdominal muscles. Eleven adult men with experience in weight training were asked to perform three repetitions of LSU, BSU, TSU, TC, RSU, LR and SLR. Activities of the upper rectus abdominis (URA), lower rectus abdominis (LRA), external abdominal oblique (EAO), and rectus femoris (RF) during the hip flexion and hip extension phases of each exercise were examined by electromyography (EMG) and analyzed using root mean square (RMS) values. The following results were obtained: (1) The mean RMS values for the URA were larger during the RSU and SLR than during the other five exercises. The value for the same muscle was larger during the TC exercise than during the LSU, BSU, TSU, and LR exercises. The mean RMS value for the LRA was largest during the RSU exercise, while that during the SLR exercise was larger than those during the LSU, BSU, TSU, TC, and LR exercises. (2) The mean RMS value for the EAO was largest during the SLR exercise, while that during the RSU exercise was second-largest and that during the TSU exercise was third-largest. The mean RMS values for the RF were larger during the RSU and SLR than during the other five exercises. The smallest value for this muscle was recorded during the TC exercise. (3) In most of the exercises, RMS in the hip flexion phase was larger than in the hip extension phase, and each muscle exhibited a knee flexion phase/knee extension phase ratio of between 0.5 and 0.8. However, the ratio for EAO and RF exceeded this range. (4) The muscle activity for the RF muscle in the RSU and SLR exercises was large, implying excessive stress for the lumbar vertebrae. Nevertheless, these exercises induced active muscle activity, and appeared desirable to perform with sufficient attention to safety.These results suggest that RSU and SLR exercises are the most effective movements for stimulating the URA, LRA and EAO. Moreover, TC is an effective movement for training the URA, and TSU is an effective movement for training.

2020-09-06 15:22:01
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2 0 0 0 OA 腹部トレーニング7種目における腹直筋上部,腹直筋下部,外腹斜筋および大腿直筋の筋電図学的研究

著者: 半田徹加藤浩人長谷川伸岡田純一加藤清忠
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.0907160099, (Released:2009-07-20)
参考文献数: 27

2020-08-08 06:27:03
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2 0 0 0 OA 筋力トレーニングのプル系5種目における上腕二頭筋, 広背筋および僧帽筋の筋電図学的研究

著者: 半田徹加藤浩人長谷川伸岡田純一加藤清忠
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.54, no.2, pp.159-168, 2005 (Released:2006-12-01)
参考文献数: 22
被引用文献数: 3 7

To compare the effectiveness of five different muscle training movements on the biceps brachii, latissimus dorsi and trapezius muscles, eight weight-trained men (age, 20.4±0.5 years) were asked to perform three repetitions, at 70% one repetition maximum, of upright rowing (UR) and bent-over rowing (BR) exercises using a barbell ; and seated rowing (SR), front lat pull-down (LPf) and back lat pull-down (LPb) exercises using a Universal Machine. The activities of the biceps brachii, latissimus dorsi, and trapezius during the elbow flexsion and elbow extension phases of each exercise were analyzed using integrated electromyography (EMG) and normalized I-EMG. The results were as follows :1. The mean nrmsEMG values for the biceps brachii were larger during UR and LPf exercises than during BR, SR, and LPb exercises, suggesting that UR and LPf are more effective than the other movements for training the biceps brachii. The mean nrmsEMG values for the latissimus dorsi were larger during SR, LPf, and LPb exercises, followed by BR and UR exercises (in descending order), suggesting that SR, LPf, and LPb exercises are more effective than the other movements for training the latissimus dorsi.2. The mean nrmsEMG values for the upper trapezius were larger during UR and BR exercises than during SR, LPf, and LPb exercises, suggesting that UR and BR exercises are more effective than the other movements for training the upper trapezius. The mean nrmsEMG values for the middle trapezius were larger during BR and SR exercises than during UR, LPf, and LPb exercises, suggesting that BR and SR exercises are more effective than the other movements for training the middle trapezius. The mean nrmsEMG values for the lower trapezius were larger during BR exercise than during other movements, suggesting that BR exercise is more effective than the other movements for training the lower trapezius.3. In all the exercises, each muscle showed a higher nrmsEMG value during the elbow flexsion phase than during the elbow extension phase. This observation suggests that the training method examined in this study should emphasize the elbow flexsion movement.The present results suggest that UR exercise is the most effective movement for training the biceps brachii and upper trapezius, BR is most effective for training the upper trapezius, middle trapezius and lower trapezius, SR is most effective for training the latissimus dorsi and middle trapezius, LPf is most effective for training the biceps brachii and latissimus dorsi, and LPb is most effective for training the latissimus dorsi.

2018-03-02 02:42:14
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2 0 0 0 頭蓋骨に単発した Eosinophilic Granuloma の 1 例

著者: 渡辺熙岡田純一郎竹内一夫豊田博
出版者: 杏林医学会
雑誌: 杏林医学会雑誌 (ISSN:03685829)
巻号頁・発行日: vol.11, no.1, pp.27-31, 1980

1953年にLichtensteinがeosinophilic granuloma, Hand-Schuller-Christian病Letterer-Siwe病の3疾患を包括して, Histiocytosis Xなる語を提唱した事は周知の事実である。今回, 我々は9才女児の後頭頭頂部の軽度圧痛を初発症状として発症した頭蓋骨の単発性eosinophilic granulomaを経験した。そこでこの症例の臨床経過を述べ, 更に若干の文献的考察を加える。

2017-04-01 09:49:04
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2 0 0 0 OA 245.第7国東京オリンピック記念体力測定 : 形態の推移

著者: 原孝子塚越克己雨宮輝也伊藤静夫岡田純一黒田幸雄高沢晴夫
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.42, no.6, 1993-12-01

2013-09-08 15:30:16
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https://ci.nii.ac.jp/naid/110001945647

1 0 0 0 OA 重量挙げおよび陸上短距離選手における下肢筋群の筋厚と競技成績との関係

著者: 池袋敏博久保啓太郎岡田純一矢田秀昭角田直也
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.60, no.4, pp.401-411, 2011 (Released:2011-08-30)
参考文献数: 37
被引用文献数: 7 7

This study aimed to investigate the differences in the development of muscle thickness (MT) in the lower limbs with specific sports-event training. Furthermore, the relationship between MT of the lower limbs for weightlifters and sprinters and their competition performances (total weight lifted and 100m sprint times) was examined. Subjects were 64 males divided into 3 groups: weightlifters (n=20), sprinters (n=20), and untrained subjects as controls (n=24). The MT{relative to (body weight)1/3}of knee extensors (KE), knee flexors (KF), plantar flexors (PF) and dorsi flexors (DF) was measured at 21 sites (proximal, middle and distal) along the length of the upper and lower leg by B-mode ultrasound. The MT of KE for weightlifters was significantly greater than that for sprinters and controls, while the MT of KF and PF for sprinters was significantly greater than that for weightlifters and controls. The MT of rectus femoris (RF), vastus intermedius (VI), vastus lateralis (VL) and vastus medialis (VM) for weightlifters was significantly greater than that for sprinters and controls, while the MT of RF and VM for sprinters was greater than that of controls. On the other hand, the MT of KE for weightlifters and sprinters (especially VM) correlated significantly with competition performances. These results indicated that squatting affected the MT of KE except for RF while sprinting affected the MT of KF and PF. It was also concluded that the MT of KE for weightlifters and sprinters (particularly VM) was related to their competition performances.

2023-04-27 15:05:25
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1 0 0 0 OA フランス経済学史

著者: 岡田純一
出版者: The Japanese Society for the History of Economic Thought
雑誌: 経済学史学会年報 (ISSN:04534786)
巻号頁・発行日: vol.20, no.20, pp.26-34, 1982 (Released:2010-08-05)

2021-01-27 22:47:00
1 はてなブックマーク

1 0 0 0 OA 高齢者にみられる腸腰筋体積の性差

著者: 長谷川伸岡田純一加藤清忠
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.57, no.1, pp.131-140, 2008-02-01 (Released:2008-08-06)
参考文献数: 23
被引用文献数: 1

The purpose of this study was to investigate sex differences in the muscle volume (MV) of the iliopsoas, psoas major, and iliacus muscles, normalized by fat free mass (FFM), in the elderly. The subjects were 15 males and 15 females 65 years of age or over. Serial transverse 1.5T magnetic images (10 mm slice) of each subject were taken between the 12th thoracic vertebrae and the lesser trochanter. FFM was measured with a bioelectrical impedance analyzer. The mean MV of each muscle on the right and left sides were calculated and used for regression analysis of the relationship between MV and FFM.A significant correlation was observed between MV and FFM of the iliacus in both sexes (p<0.01), but not between the MV and FFM of the psoas major. MV normalized by FFM and cross-sectional area (CSA) normalized by FFM2/3 showed significantly greater values for the psoas major in the males than in the females (p<0.001), but there was no sex difference in the MV or CSA normalized by FFM of the iliacus.These results suggest that elderly males tend to have a greater muscle volume and cross-sectional area of the iliopsoas than elderly females, and that these sex differences are attributable to differences in the psoas major.