巻号一覧
48 巻, 2 号
選択された号の論文の9件中1～9を表示しています
- |<
- <
- 1
- >
- >|
-
湊 久美子, 内藤 久士1999 年 48 巻 2 号 p. 245-250
発行日: 1999/04/01
公開日: 2010/09/30
ジャーナル フリー加齢による膵外分泌機能の低下を持久的運動習慣によって防ぐことが可能か否か検討する目的で, 老齢ラットの膵酵素活性について持久的走トレーニング (傾斜角度15%, 走行スピード22m/分, 5日/週, 10週間) による影響を観察した.若齢群, 老齢群ともトレーニングラットにおいて血中トリグリセリドは有意に低値を示し, 両群とも持久的なトレーニング効果が観察された.膵の体重当たりの湿重量, 蛋白含量, アミラーゼ, リパーゼ活性は, コントロールラットにおいて, 若齢群に比較して老齢群で著しく低値を示した.老齢群ではトレーニングラットでこれらのいずれの項目も有意に高い値を示した.抄録全体を表示PDF形式でダウンロード (645K) -
―競技レベル, 学年, 経験年数を指標として―津山 薫, 藤城 仁音, 中嶋 耕平, 中里 浩一, 中嶋 寛之1999 年 48 巻 2 号 p. 251-263
発行日: 1999/04/01
公開日: 2010/09/30
ジャーナル フリーA study was conducted to evaluate and compare neck muscle strength between two levels of college American football players with the aim of preventing neck injuries. The subjects were American football players at N University (n=52) belonging to the first level league and American football players at G University (n=14) belonging to the third level league. The findings were as follows.
1. The neck muscle strength of freshman players at N University tended to be lower than that of senior players.
2. It was shown that the neck muscle strength/body weight of experienced American football players was 10-30% higher than that of inexperienced players.
3. There was a significant difference in neck muscle strength/body weight between N University and G University in 1997. However, there was no significant difference between them in 1998, because neck muscle strength/body weight of G University players increased by 13-30% after neck muscle training for about nine months. It was suggested that coaching staff must evaluate the neck muscle strength of each player, especially in freshmen who have had no experience of American football, in order to prevent neck injuries because mismatch of performance level may cause catastrophic neck injury.抄録全体を表示PDF形式でダウンロード (3571K) -
―健康診断結果および日常生活に起因した健康阻害要因に基づく設定―須藤 美智子, 三谷 陽子, 鈴木 政登1999 年 48 巻 2 号 p. 265-279
発行日: 1999/04/01
公開日: 2010/09/30
ジャーナル フリー本研究では, 握力 (比握力) , 柔軟性および推定VO2maxを健康関連体力 (HRPF) として選択し, 20～59歳の男性3102名を対象に, HRPFの臨界レベル (critical level) および望ましいレベル (desirable level) の設定を試みた.まず, 健康診断結果および運動習慣の有無や喫煙, アルコール飲用など日常生活に起因した健康阻害要因を数値化し, 4種類の健康指標の組み合わせ (HIS-A～D) を作成し, HIS得点0～1点の者を“健康人”, 3～4点以上の者を“不健康人”とした.各体力テストの測定値をcut off値としてROC曲線を描き, “健康人”, “不健康人”を選別するのに最も適したHISの組み合わせの選択を行った.その結果, HIS-Bの組み合わせが選ばれた.HIS-Bにおいてそれぞれ0, 1, 2, 3, 4点以上を示した者の比握力, 柔軟性, VO2maxの平均値をcut off値として感度, 特異度およびYouden指数を算出した.“健康人”を“健康人”として最も多く判別でき (特異度) , しかも診断正確度 (Youden指数) の高いcut off値を各々の体力の臨界レベルとし, 健康人 (HIS-B0～1点) の体力レベルを望ましいレベルとして算出し吟味した結果, 健康の基盤となる体力要素として, 柔軟性, 全身持久性能力が挙げられ, それらの臨界レベルおよび望ましいレベルは次のようであった.
1) 柔軟性の望ましいレベルは, 20～, 30～, 40～, 50～歳代それぞれ7.0, 6.6, 5.2, 4.6cmであり, 臨界レベルは20～39歳代共通で3.2cm, 40～59歳代では1.1cmであった.
2) VO2maxの望ましいレベルは, 20～, 30～, 40～, 50～歳代それぞれ50.2, 46.2, 45.5, 41.5ml/kg・分であり, 臨界レベルは41.8, 40.9, 40.0, 37.8ml/kg・分であった.
以上, 健康に関する体力 (HRPF) のうち柔軟性および推定VO2maxの望ましいレベルと臨界レベルを設定した.健康診断の事後措置として行われる運動指導において健康であるための体力の最低レベル (“臨界レベル”) を維持させるよりも健康や体力の向上を目標とした指導が望ましいことは言うまでもなく, 本研究ではその目標値となる“望ましいレベル”も設定した.抄録全体を表示PDF形式でダウンロード (1864K) -
山次 俊介, 出村 慎一, 長澤 吉則, 中田 征克, 松澤 甚三郎, 島田 茂1999 年 48 巻 2 号 p. 281-289
発行日: 1999/04/01
公開日: 2010/09/30
ジャーナル フリーThis study aims to examine the effects of kinesio taping (KT) on explosive muscle and sustained maximal muscle exertions of lower limbs in pre- and post-strenuous exercises (SE) up to exhaustion. Twenty healthy college males (mean age 20.4 ± 1.08 yr) participated in the experiment for both the conditions of strapping KT (KT group) and no strapping KT (control group) . They all took pre- and post-SE isokinetic tests (IK test) .
The KT was strapped around muscle groups related to flexion and extension motions of a knee joint before the experiment. The effects of KT were confirmed on the exertion of the explosive muscle strength in flexion motion of post-SE, and the sustained muscle strength in pre- and post-SEs. It was inferred that the effects of KT relate to the fatigue state of muscle groups related to motion and motion types, and interpretation of these effects differs by the load intensity and the variables used for evaluation.抄録全体を表示PDF形式でダウンロード (2106K) -
真田 樹義, 佐藤 真治, 神戸 義彦, 朽木 勤, 文谷 知明, 江橋 博1999 年 48 巻 2 号 p. 291-299
発行日: 1999/04/01
公開日: 2010/09/30
ジャーナル フリーThe gastrocnemius muscles are composed predominantly of type II B and II A fibers while the soleus muscle is composed of type I fibers. However, the relationships between the calcaneal bone stiffness and the triceps surae muscles consisting of the different types of skeletal muscle fibers are unknown. The purpose of this study was to investigate the relationships between the calcaneal bone stiffness and the gastrocnemius or soleus muscle thickness in 73 postmenopausal women. We measured the speed of sound (SOS) and the broad band ultrasound attenuation (BUA), using a ultrasonic measurement of the calcaneal and the gastrocnemius or soleus muscle thickness used to measure the B-mode ultrasound anatomy. There was a significant differences in age between the high-and low-SOS groups. In the high-BUA group, the body mass index, the lower leg girth and the triceps surae muscle thickness were significantly higher than those in the low-BUA group. This data indicated that SOS is related to ageing and BUA is related to the body mass or the muscle thickness. The other side, stiffness and SOS were significantly correlated with the gastrocnemius muscle thickness, but not with the soleus muscle mass. Therefore, this study suggests that the calcaneal bone stiffness is closely related to the muscle thickness, which may be related especialy to the fast twitch muscle.抄録全体を表示PDF形式でダウンロード (2327K) -
宮地 元彦, 家光 素行1999 年 48 巻 2 号 p. 301-313
発行日: 1999/04/01
公開日: 2010/09/30
ジャーナル フリーIn a recent study, endurance athletes, i.e. cyclists and long-distance runners, were found to have larger arterial conductance vessels than untrained controls. The aim of the present study was to determine the blood flow profiles of dilated vessels in these endurance-trained athletes. Twelve endurance-trained athletes (ET group) and twelve untrained control subjects (UC group) volunteered for the study. The cross-sectional area (CSA), peak and mean blood velocity in the ascending aorta (pV and mV), blood pressure (BP), and heart rate (HR) were measured in the semi-supine position on a cycle ergometer fitted with a backrest, at rest and during exercise at 40%, 60%, and 80%Vo2max. Furthermore, stroke volume (SV), cardiac output (CO), total peripheral resistance, and double product were calculated. The SV and CO of the ET group were significantly larger than those of the UC group during exercise. The CSA of the ascending aorta in the ET group was significantly larger than that in the UC group at rest and during exercise. There were no differences in the mV and mean BP between the two groups. Upon comparison at the same SV, pV, mV, the total peripheral resistance, and double product of the ET group were lower than those of the UC group. These results suggest that the dilation of the arterial conductance vessels with endurance training contri-butes to an increase in blood flow to the exercising muscles without a rise in mechanical stress (shear stress and pressure) to the aortic wall. In other words, the arterial conductance vessels adapt morphologically to maintain an adequate degree of the mechanical stress on the aortic wall.抄録全体を表示PDF形式でダウンロード (1305K) -
～興奮収縮連関の機能を担う筋細胞内膜系とCa2+チャンネル～竹倉 宏明, 吉岡 利忠1999 年 48 巻 2 号 p. 315-325
発行日: 1999/04/01
公開日: 2010/09/30
ジャーナル フリーPDF形式でダウンロード (8293K) -
1999 年 48 巻 2 号 p. 327-335
発行日: 1999/04/01
公開日: 2010/09/30
ジャーナル フリーPDF形式でダウンロード (1611K) -
1999 年 48 巻 2 号 p. 336-341
発行日: 1999/04/01
公開日: 2010/09/30
ジャーナル フリーPDF形式でダウンロード (874K)
- |<
- <
- 1
- >
- >|