巻号一覧
52 巻, 4 号
選択された号の論文の10件中1～10を表示しています
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TAKASHI NIGORIKAWA, KAZUO OISHI, MICHIO YASUKAWA, MAMI KAMIMURA, MITSU ...2003 年 52 巻 4 号 p. 359-367
発行日: 2003/08/01
公開日: 2010/09/30
ジャーナル フリーThis study was designed to investigate the relationships between the tendencies toward Type A behavior pattern (TABP) and sports injuries. A total of 2164 (1631 males and 533 females) athletes from several colleges in Japan, volunteered for this study. They were divided into two groups ; an injury group and a non-injury group. KG's Daily Life Questionnaire was used to investigate the tendency of TABP. Our hypothesis was that Type A individuals showed higher occurrences of sports injury than Type B individuals. Most of the results in this study supported our hypothesis. To put it concretely, the injury group showed higher TABP tendency than the non-injury group. And the higher TABP score group showed higher occurrence of injury experiences than those of low score group. Therefore, there was a possibility that TABP tendency of athletes might be one of the informations to prevent sports injuries.抄録全体を表示PDF形式でダウンロード (855K) -
金 昌龍, 渡部 和彦2003 年 52 巻 4 号 p. 369-379
発行日: 2003/08/01
公開日: 2010/09/30
ジャーナル フリー本研究は, 太極拳を実施している中・高齢者34名を対象に太極拳の実践が立位姿勢保持に関するバランス機能に如何なる効果をもたらすかについて, イクイテストシステムの分析によりその関連性について調べた.その結果, 以下の知見が得られた.
1.太極拳の実践は短期間ではその効果は現れにくいが, 継続的な実践によって, 中・高齢者のバランス機能の能力を向上させ, あるいは機能低下を遅延させる可能性が示唆された.
2.水平移動を伴う外乱刺激に対する身体応答の速さは, 太極拳の実践によってその機能の向上が期待できるという可能性が示された.
3.脚の伸展筋力は太極拳を長期間実践することにより, ある程度の衰えを防ぐ可能性が示されたが, 脚筋力とバランス機能との間には相関関係が認められなかった.
4.太極拳を長期間継続することはヒトのバランス機能の向上に貢献できる可能性を示した.静的バランス機能より動的なバランス機能への貢献の可能性が示された.抄録全体を表示PDF形式でダウンロード (1327K) -
山田 洋, 八田 有洋, 西平 賀昭, 木塚 朝博, 増田 正, 横井 孝志, 岡田 守彦2003 年 52 巻 4 号 p. 381-389
発行日: 2003/08/01
公開日: 2010/09/30
ジャーナル フリーWe evaluated motor unit (MU) fatigue in the first dorsal interosseous muscle (FDI) using the collision principle. Eight healthy men exerted 70% (short-duration fatigue task: SDF task) and 30% (long-duration fatigue task: LDF task) maximum voluntary contraction of isometric abductions in the left FDI until exhausted. Before and after voluntary contractions, the ulnar nerve was stimulated at the wrist and elbow with supramaximal intensity, and a pair of M-waves was obtained. Fatiguerelated changes were studied in mean power frequency (MPF), averaged rectified value (ARV) calculated from surface EMG, and motor nerve conduction velocity (MCV) and distribution of motor nerve conduction velocity (DMCV) calculated from M-waves. The MPF of voluntary EMG decreased, whereas ARV increased significantly during SDF and LDF tasks, indicating fatigue had developed in the FDI. Endurance was significantly shorter in the SDF task than in the LDF task (p<0.01), whereas differences between tasks were not seen in MPF and ARV changes. Tasks did not affect MCV, but lower components in DMCV increased for both tasks. Increased lower components were larger in the LDF task than in the SDF task. The shift in DMCV indicated that fatigued MUs stopped activity and enduring MUs, which had lower axon conduction velocity, were activated selectively. These results suggest that the collision principle is applicable in evaluating motor unit fatigability.抄録全体を表示PDF形式でダウンロード (2483K) -
井上 基浩2003 年 52 巻 4 号 p. 391-406
発行日: 2003/08/01
公開日: 2010/09/30
ジャーナル フリーThis study was undertaken to examine the effects of electro-acupuncture with direct current on peripheral nerve regeneration. Fifty-five 7 month old male rats were used in the present study. Sciatic nerve of each rat was crushed at the thigh, then the subject were divided into four groups as Cathode distal group (n=15), Anode distal group (n=14), Sham group (n=13), and Control group (n=13) . In the Cathode distal group, an insulated acupuncture needle which was inserted at lcm distal to the injured site was used as cathodal electrode, while a needle inserted at lcm proximal to the lesion was used as anodal electrode. In the Anode distal group, the needle at lcm distal and pro. ximal to the lesion were used as the anodal and the cathodal electrodes respectively. In the Sham group, no electrical stimulation were given to the insulated needle inserted at the same site as the aforementioned groups. In the Control group, no operation was given after crush injury. Regeneration of the sciatic nerve were evaluated with the number and the latency of the evoked EMG recorded at 12 sites in the foot, the behavioral test score (BTS) at 1, 2, 3, and 4 week after crush injury, weight ratio of the tibialis anterior and morphological study at 4 weeks after crush injury. Every kind of evaluation indicated that regeneration of the peripheral nerve was faster in the Cathode distal group than those in the other group. In the Anode distal group, the number of the evoked EMG and BTS were significantly lower than those in the Control group with tendency of longer latency and lesser muscle weight ratio. We suggested that electro-acupuncture with cathode distal orientation accelerated regeneration of the peripheral nerve after crush injury, while anode distal orientation delayed the regeneration. The electro-acupuncture with cathode distal orientation might be one of the useful treatment having advantage to perform deeper insertion with minimal invasion.抄録全体を表示PDF形式でダウンロード (5079K) -
長谷川 伸, 館 俊樹, 佐々木 宏, 鳥居 俊, 加藤 清忠2003 年 52 巻 4 号 p. 407-419
発行日: 2003/08/01
公開日: 2010/09/30
ジャーナル フリーThe purpose of this study was to investigate the influence of a shoulder injury on rotator cuff muscle thickness and shoulder muscle strength in baseball players. Based on orthopedic medical checks performed by a doctor for 57 male collegiate baseball players, two groups, the pain-free normal group (NOR group, n=19) and the impingement test positive group (IMP group, n=17) volunteered to participate in the study. Muscle thickness of the supraspinatus, infraspinatus and posterior deltoid muscles was measured bilaterally using a B-mode ultrasound apparatus (SSD-500, Aloka) with a 5-MHz transducer. Isometric shoulder abduction strength was measured bilaterally with a hand-held dynamometer in the sitting position with the arm at 45 degrees abduction, and shoulder external and internal rotation strength were measured bilaterally with an isokinetic dynamometer in the sitting position with the upper arm at 90 degrees abduction.
When the two groups were compared, the NOR group showed significantly greater values on the dominant side than on the non-dominant side for muscle thickness of the posterior deltoid. However, the IMP group showed significantly greater values on the non-dominant side than on the dominant side of muscle thickness of the supraspinatus, the muscle strength with the abduction and external rotation (300 deg/sec) and external internal rotation strength ratio (180 deg/sec) .
Also, the IMP group had a significantly weaker dominant/non-dominant ratio of supraspinatus muscle thickness (p<0.05) and abduction strength than the NOR group (p<0.01) .
These results suggest that baseball players with positive impingement show both a morphological and functional decline in the supraspinatus muscle. The dominant side supraspinatus weakness observed in the IMP group of this study may reflect muscle atrophy and chronic fatigue.抄録全体を表示PDF形式でダウンロード (4736K) -
藤瀬 武彦2003 年 52 巻 4 号 p. 421-432
発行日: 2003/08/01
公開日: 2010/09/30
ジャーナル フリーThe purpose of this study was to compare the self-estimation and ideal figure of one's body between Japanese and Caucasian female students. A questionnaire was employed to examine three areas of inquiry : Language, Numerical value, and Model figure. The subjects were chosen from the following sources: Fifty seven Japanese female students (JF-group : BMI 20.9±1.9 kg/m2) and 53 male students (JM-group : 21.4±3.0kg/m2), and 28 Caucasian female students (CF-group : 23.1±3.3 kg/m2) and 26 male students (CM-group : 22.7±3.2 kg/m2) . The proportion of those who consi dered themselves as“fat”were as follows : JF-group at 75.4% and CF-group at 32.1% (X2=16.182, p<0.01) . The proportion of subjects considering the ideal figure as“slim”were as follows: JF-group at 91.2% and CF-group at 46.4% (X2=28.973, p<0.001) . However many subjects in the JM-group and CM-group selected“slightly slim”or“average”as the ideal figure for a woman. From BMI analysis, which calculates ideal body weight with the subjects' actual standing height, it was discovered that the JF-group averaged 18.7±1.3 kg/m2. This was a significantly lower level than 20.6±1.7 kg/m2 for the CF-group (p<0.001) . The value for the JF-group was almost the same as the JM-group (18.9±1.3kg/m2) . There was no difference in the BMI of the selected model as each group's physical self-perception, although there was significant difference between the actual body figure of the JF-group and CF-group. Using the BMI of the selected model as the ideal figure, the JF-group and CF-group averaged 18.4±1.1 kg/m and 19.6±1.5kg/m2 (p<0.01) . After controll ing for the actual BMI of the JF-group (BMI≥22.0 kg/m2) and CF-group, these tendencies did not change. Based on these findings, it was concluded that Japanese female students consider themselves far fatter than they actually are, and expressed a wish to become slimmer despite already being slim. Also, there are differences between females and males as to their images of the ideal body figure. Male students prefer fatter women than what Japanese female students imagine is the ideal figure.抄録全体を表示PDF形式でダウンロード (3243K) -
黒岩 一雄, 西平 賀昭, 八田 有洋, 和坂 俊昭, 金田 健史, 秋山 幸代, 木田 哲夫, 坂本 将基, 紙上 敬太2003 年 52 巻 4 号 p. 433-442
発行日: 2003/08/01
公開日: 2010/12/10
ジャーナル フリーWe studied whether exercise fatigue affects somatosensorv input using somatosensory evoked potential (SEP) . Sixteen subjects performed intermittent grip strength exercises with muscle fatigue while ignoring electrical stimulation given to an elbow. We induced SEP in the exercise task (during contraction) in every stage (first stage, middle stage and final stage) . In addition, we induced SEP in the exercise task during relaxation in the first stage and final stage. As a result, the early component amplitude of SEP decreased with the progress of exercise (manifestation of muscle fatigue) during contraction and relaxation. Our findings suggested that somatosensory input decreased with the manifestation of muscle fatigue. Somatosensory input is necessary for control of voluntary movement. Therefore, we speculate that these factors play a role in decreased performance of athletes competing in long-duration events.抄録全体を表示PDF形式でダウンロード (1129K) -
大河原 一憲, 田中 喜代次, 中田 由夫, 李 東俊, 魏 丞完, 中塘 二三生2003 年 52 巻 4 号 p. 443-453
発行日: 2003/08/01
公開日: 2010/09/30
ジャーナル フリーThe purpose of this study was to compare estimates of human body composition determined from single-frequency bioelectrical impedance methods (S-BIM) and multi-frequency bioelectrical impedance methods (M-BIM) . The human body composition was assessed by dual energy X-ray absorptiometry (DEXA), 5 brands of S-BIM, and 2 brands of M-BIM. Forty-five women, aged 26-58 years, served as subjects. The S-BIM and M-BIM fat-free mass (FFM) estimates were highly correlated with the FFM measured by DEXA (r=0.82-0.93) . The standard errors of estimate (SEE) for FFM were approximately 2 kg. With the exception of the MLT-100 (which slightly underestimated FFM), all brands of BIM slightly overestimated FFM. The absolute mean differences between FFMDEXA and each of the 7 BIM estimates ranged from -3.02 kg to 3.46 kg. Although the 7 brands of BIM provided slightly different estimates, the results of this study suggest that 5-BIM and M-BIM are relatively valid in human body composition.抄録全体を表示PDF形式でダウンロード (1167K) -
尾縣 貢, 真鍋 芳明, 高本 恵美, 木越 清信2003 年 52 巻 4 号 p. 455-463
発行日: 2003/08/01
公開日: 2010/09/30
ジャーナル フリー本研究の目的は, 400m走中の関節トルクの変化と走速度, ピッチおよびストライドの変化との関係, 400m走中のトルク発揮の持続能力と体力要因としての下肢の筋持久力との関係を検討することであった.400mの48.75±1.32sベスト記録を有する競技者11名を被検者とし, 400m走における前半 (160m地点) , 後半 (360m地点) の疾走動作の撮影, 等速性運動における膝・股関節運動の持久性を測定した.
主な結果は以下の通りである.
1) 400m走後半において速度を維持していた者ほど400m走タイムは短かった.
2) 走速度, ピッチおよびストライドともに後半で有意に低下した.
3) 走速度変化率と股関節屈曲・伸展および膝関節屈曲・伸展のトルク変化率とは有意な正の相関関係にあり, トルクが維持できる者ほど走速度も維持できるという関係が認められた.
4) 走速度変化率はピッチ変化率と有意な正の相関関係に, ピッチ変化率はピッチを構成する支持期時間の変化率との間に有意な負の相関関係にあった.このうちの支持期時間変化率は, 股関節伸展・屈曲トルク変化率との間に有意な正の関係が認められた.これらのことから, 後半でのピッチの維持には, 股関節トルクの持続能力が影響を及ぼすと考えられる.
5) 股関節屈曲トルク変化率と股関節屈曲筋持久力, 股関節伸展トルク変化率と膝関節屈曲筋持久力との間などに有意な関係が認められ, 体力要因である筋持久力が走動作の中でのトルク発揮の持続性に影響を持つことが明らかになった.
以上のことから, 400m疾走中の下肢関節トルクの持続能力は, ピッチ維持能力および走速度維持能力に影響を及ぼし, 体力要因である下肢の筋持久力に影響を受けていることが示唆された.抄録全体を表示PDF形式でダウンロード (1051K) -
松井 信夫2003 年 52 巻 4 号 p. 465-471
発行日: 2003/08/01
公開日: 2010/09/30
ジャーナル フリーPDF形式でダウンロード (703K)
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