巻号一覧
57 巻, 5 号
選択された号の論文の9件中1～9を表示しています
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綜説
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飛奈 卓郎, 田中 宏暁, 西田 裕一郎, 清永 明2008 年 57 巻 5 号 p. 527-532
発行日: 2008/10/01
公開日: 2008/12/03
ジャーナル フリーAngiotensin I converting enzyme (ACE) gene Insertion/Deletion (I/D) polymorphism was first shown as a genetic factor which influences human physical performance in 1998. Since then, various gene polymorphisms which influence physical performance and trainability have been reported. ACE is a key enzyme which produces angiotensin II in the renin-angiotensin system, and its activity was determined by I/D polymorphism. Many studies indicate that the I/I genotype is frequently found in elite endurance athletes, while the D/D genotype is frequently found in power-oriented elite athletes. Longitudinal studies show that the D/D genotype may contribute to enhanced strength trainability. However, it is still unclear whether the I/I genotype enhances endurance trainability. Therefore, the ACE gene I/D polymorphism can be a genetic factor which influences human physical performance.抄録全体を表示PDF形式でダウンロード (192K)
原著
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池田 香代, 岡村 浩嗣2008 年 57 巻 5 号 p. 533-540
発行日: 2008/10/01
公開日: 2008/12/03
ジャーナル フリーWe investigated whether preference for sucrose solution changes after exercise and whether the change influences post-exercise recovery of body fluid and glycogen. Rats were individually housed in cages equipped with 2 bottles containing water and either a 0.4%, 2%, 4 % or 8 % sucrose solution. The rats had free access to the water and sucrose solution for 6 h on both the day before (Pre) and the day of 2 h treadmill exercise (Ex). Fluid intake was measured. We also measured tissue weight, tissue water and tissue glycogen after 6 h recovery. Compared to Pre, voluntary fluid intake on Ex significantly decreased for 2 % and 4 % solutions, whereas it did not change for 0.4% and 8 %. After 6h of fluid ingestion, the content of tissue water and glycogen was highest for 8 % among the solutions. These results demonstrate that 8 % was effective in rehydration and tissue glycogen recovery after exercise, since its voluntary intake did not decrease after exercise.抄録全体を表示PDF形式でダウンロード (221K) -
芝口 翼, 杉浦 崇夫, 古本 司, 井上 恒志郎, 飯田 義晴, 磯山 智美, 内藤 久士, 後藤 勝正, 大森 大二郎, 吉岡 利忠2008 年 57 巻 5 号 p. 541-552
発行日: 2008/10/01
公開日: 2008/12/03
ジャーナル フリーOxidative stress is thought to be a significant contributing factor of age-related sarcopenia. We tested the hypothesis that long-term dietary antioxidant (astaxanthin) intake attenuates sarcopenia. Wistar strain male rats, aged 45 weeks old, were given either control (Cont) or astaxanthin feed (0.004%, Ax) for 1 year. The soleus muscle weight and muscle weight-to-body weight ratios in Ax group were significantly higher than in Cont group, but tibialis anterior muscle mass was similar between the two dietary groups. The level of ubiquitinated proteins was significantly lower in the soleus muscles of Ax group, but not in tibialis anterior muscles when compared with Cont group. Tibialis anterior levels of cathepsin L, especially, and caspase-3 tended to be lower in Ax group than in Cont group. Cathepsin L levels were significantly lower. Whereas no differences between Cont and Ax were observed in soleus levels. There were no significant differences in Ax supplementation on calpain 1 and 2, UBC3B, Cu/Zn SOD and nitrotyrosine levels in either soleus or tibialis anterior muscles. Our data suggest that long-term dietary astaxanthin intake attenuates age-related muscle atrophy, due in part, to reduction in ubiquitination of myofibrillar protein in slow soleus muscles, but not in fast tibialis anterior muscles.抄録全体を表示PDF形式でダウンロード (352K) -
小笠原 一生, 白木 仁, 向井 直樹, 竹村 雅裕, 宮川 俊平2008 年 57 巻 5 号 p. 553-562
発行日: 2008/10/01
公開日: 2008/12/03
ジャーナル フリーThe aim of this study is to examine the potential of the two-dimensional posture evaluation method as a screening tool for detecting the high-risk population for anterior cruciate ligament injury.
Eleven healthy adults participated in this study. They jumped from a 31 cm-high box and landed on their dominant leg. Three-dimensional knee flexion/extension, knee valgus/varus and hip adduction/abduction angle during single-legged landing were calculated. At the same time, the Frontal-plane Knee Displacement index (FKD)-the knee joint position relative to the line between the hip and ankle joint-was measured.
FKD reflects the time variation of three-dimensional knee valgus and hip adduction angle very well.
Our results suggest that FKD has potential as a screening tool particularly for movement occurring primarily in the frontal-plane.抄録全体を表示PDF形式でダウンロード (288K) -
宮里 幸, 浦辺 幸夫, 山中 悠紀, 上田 泰之, 山口 織江, 金井 香菜, 木村 浩彰2008 年 57 巻 5 号 p. 563-568
発行日: 2008/10/01
公開日: 2008/12/03
ジャーナル フリーIn this study, we investigated whether a difference in the angular velocity has an effect on proprioceptive sensibility in 30 healthy subjects. Knee detection of passive motion at five angular velocities (0.1°/s, 0.2°/s, 0.3°/s, 0.4°/s, and 0.5°/s) was carried out from a starting position of 15° knee flexion for extension using a proprioception testing device. At 0.1°/s, the elapsed time was longer than that of the other angular velocities and the angular displacement was bigger as well. There were no significant differences among the remaining angular velocities (0.2～0.5°/s). Therefore it is suggested that a healthy knee has less proprioception at an angular velocity of 0.1°/s.抄録全体を表示PDF形式でダウンロード (163K) -
大林 弘宗, 浦辺 幸夫2008 年 57 巻 5 号 p. 569-576
発行日: 2008/10/01
公開日: 2008/12/03
ジャーナル フリーLow-back pain is one of the most common injuries in competitive swimmers. Therefore, the prevention of low-back pain would contribute to improved performance of swimmers. A biomechanical analysis is necessary to prevent the sports-related injuries. However, only lumbar movement has been analyzed in swimmers with low-back pain. Lumbar spine movement is closely associated with the pelvis and hip joint. Thus, not only the lumbar joint but also the pelvis and hip joint should be analyzed to determine the cause of low-back pain.
The aim of this study was to investigate the relationship of the effect of underwater movement on the motion characteristics of the lumbar, lumbosacral, and hip joints with trunk flexion-extension in the standing position.
Fourteen male competitive swimmers were recruited for this study. Trunk flexion-extension motion in the standing position and underwater dolphin kick motion were captured in the saggital plane on a digital video camera. A 2D motion analysis was performed to determine the lumbar, lumbosacral, and hip joint angles during these motions.
The results demonstrated that the lumbar angle during the dolphin kick motion was associated with the angle in the standing position when the trunk was extended; and the lumbosacral angle during the same motion was associated with the angle in the standing position when the trunk was flexed.
Additionally, the subjects who tilted their pelvis anteriorly while swimming exhibited a bit of pelvis motion during trunk movement in the standing position. Thus, the anterior tilting of the pelvis during swimming leads to low-back pain in swimmers.抄録全体を表示PDF形式でダウンロード (207K) -
綾部 誠也, 青木 純一郎, 熊原 秀晃, 田中 宏暁2008 年 57 巻 5 号 p. 577-586
発行日: 2008/10/01
公開日: 2008/12/03
ジャーナル フリーPDF形式でダウンロード (289K)
記事
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2008 年 57 巻 5 号 p. 587-592
発行日: 2008/08/01
公開日: 2008/12/03
ジャーナル フリーPDF形式でダウンロード (137K) -
2008 年 57 巻 5 号 p. 593-597
発行日: 2008/10/01
公開日: 2008/12/03
ジャーナル フリーPDF形式でダウンロード (109K)
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