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60 巻, 2 号
選択された号の論文の8件中1～8を表示しています
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今村 貴幸, 佐藤 真治, 牧田 茂, 間嶋 満2011 年 60 巻 2 号 p. 177-184
発行日: 2011年
公開日: 2011/05/18
ジャーナル フリーPurpose: The purpose of this study was to investigate the effect of non-instrumental resistance training on exercise capacity of patients with chronic heart disease. Methods: Nineteen elderly male patients (66.2±5.7 years) participated in the study. All had experienced coronary artery bypass surgery, coronary artery intervention, or aortic valve replacement [left ventricular ejection fraction (EF): 54.0±15.8 %]. Patients were divided into two groups. T group (N=9) performed combined aerobic and non-instrumental resistance training; and C group (N=10) performed only aerobic exercise. Resistance training involved 10 to 15 repetitions (maximum)(RM) of squats, push ups, calf raises and trunk curls. Each exercise included 3 sets of 10 repetitions repeated 3 times a week. Aerobic exercise was prescribed at the intensity of the aerobic threshold (AT) level 3 times a week. There was no significant base line for either T group or C group. Results: After three months of exercise, peak torque, peak VO2, and peak watts were significantly greater in T group, compared to those of C group. However, there was no significant correlation (r = .49) between the improvement of peak VO2 and peak torque. Conclusion: It was concluded that combined aerobic and non-instrumental resistance training is more effective than aerobic exercise alone for exercise capacity of patients with chronic heart disease. Home-based non-instrumental resistance training is usually highly significant from the perspective of the exercise capacity of patients with chronic heart disease.抄録全体を表示PDF形式でダウンロード (1420K) -
馬 佳濛, 柴田 愛, 村岡 功2011 年 60 巻 2 号 p. 185-193
発行日: 2011年
公開日: 2011/05/18
ジャーナル フリーPorpose: Physical inactivity is a modifiable risk factor for many chronic diseases. In China, inactive lifestyle is increasing yearly on Chinese adults by rapid economic development which produces their lifestyle changes. Thus, we investigated the prevalence and socio-demographic correlates of meeting the physical activity recommendation among Chinese adult internet users.
Methods: Data were analyzed for 1394 Chinese adults who responded an internet based cross-sectional survey. The International Physical Activity Questionnaire Chinese version was used to determine whether the individuals met the physical activity recommendation (150minutes/week) on the ACSM/AHA guideline. Demographic data (gender, age, marital status, employment status, educational level, annual income level, and body mass index) were also obtained. A multivariate logistic regression analysis was utilized.
Results: Overall, 87.3% of respondents met the physical activity recommendation. Age and annual income were significantly associated with meeting the physical activity recommendation. Women aged 40-49 years were more likely to meet the physical activity recommendation than those aged 30-39 years (OR = 2.12). Women with annual incomes of 40000∼50000 Yuan were more likely to meet the physical activity recommendation than those with annual incomes of 30000 Yuan or less (OR = 2.40).
Conclusion: The high prevalence rate and different socio-demographic correlates of meeting physical activity recommendation were observed among Chinese adults compared with these in developed countries. Specific strategies accounting for such socio-demographic correlates may be needed for effectively promoting physical activity among Chinese adults.抄録全体を表示PDF形式でダウンロード (980K) -
手島 貴範, 角田 直也2011 年 60 巻 2 号 p. 195-205
発行日: 2011年
公開日: 2011/05/18
ジャーナル フリーThe purpose of this study was to investigate the relative growth of thigh muscle thickness and development of ball kicking performance in junior male soccer players.
The study participants included 235 Japanese male soccer players aged between 10 and 18 years. Subjects were classified into 10 groups on the basis of their body height every 5 cm. The thickness of the anterior and posterior thigh muscles (MTA and MTP, respectively) were measured using B-mode ultrasonography. The ball distance (BD) and ball velocity (BV) were measured using a tape measure and a speed gun, respectively. By using a custom-made speed meter, we measured the maximal swing velocity of the lower limb (SV) while the players were kicking the ball. These parameters, along with the height, were plotted on a logarithmic graph to obtain the allometric equation y = bxa.
There was a sharp bend in the graph showing the relationships between MTA, MTP, BV, SV, and body height. The growth indexes "a" of MTA and MTP were increased at 157.3 cm and 159.9 cm, respectively. The development indexes "a" of BV and SV were increased at 144.3 cm and 146.1 cm, respectively. However, there were 2 sharp bends in the graph showing the relationships between BD and body height. The development index "a" of BD showed the highest value from 150.5 to 171.2 cm.
These results suggested that the developmental spurt in ball kicking performance was faster than the growth spurt in muscle thickness of the thigh.抄録全体を表示PDF形式でダウンロード (1036K) -
森本 茂2011 年 60 巻 2 号 p. 207-216
発行日: 2011年
公開日: 2011/05/18
ジャーナル フリーTo investigate factors that increase the mechanomyographic (MMG) signal during voluntary prolonged muscle contraction at relatively low tension levels, the MMG signal from the motor unit (MU mechanical signal: MUMS) was analyzed. In the present study, the author focused on the interval dependency of MUMS amplitude as one of the factors to increase MMG. From the m. vastus medialis or m. vastus lateralis, MUAP and myoelectrical signal (MES) were recorded by Ag/AgCl disc electrode and MMG and MUMS were respectively recorded by condenser microphone during various types of muscle contractions; brief isometric constant contraction (BICC), prolonged isometric constant contraction (PICC) and prolonged isometric contraction under constant MU firing interval (PIC-CFI).
The amplitude of positive phase in MUMS (MS-Vpositive) increased proportionally with the firing interval of the MU in BICC. The firing interval of MU showed an initial elongation, followed by shortening during PICC. During PICC and PIC-CFI, MS-Vpositive sustained in an initial part of the contraction and then abruptly increased. There was no meaningful relationship between the firing interval and MS-Vpositive during PICC and PIC-CFI. However, the increment ratio of the MS-Vpositive in PIC-CFI was smaller than that in PICC.
The present results on MS-Vpositive suggested that the increment of MMG during PICC did not depend on the firing interval change in the activated MUs. Based on findings with different increment ratios in MS-Vpositive between PICC and PIC-CFI, it is suggested that the hysteresis of muscle contraction is one of the factors causing an increase in MUMS and MMG.抄録全体を表示PDF形式でダウンロード (1572K) -
中村 和照, 仙石 泰雄, 緒形 ひとみ, 鍋倉 賢治2011 年 60 巻 2 号 p. 217-228
発行日: 2011年
公開日: 2011/05/18
ジャーナル フリーBlood lactate kinetics is an important physiological determinant of endurance exercise performance. Recently, some studies reported that the blood glucose transition point can also be observed (blood glucose threshold; GT) and the GT is consistent with the lactate threshold (LT). However, we have recently reported that blood glucose kinetics and blood lactate kinetics were different during two sets of incremental running tests in the same day. This result suggested that influence of low glycogen storage on GT and LT are different. This study was intended to clarify the effect of low glycogen storage on the blood glucose and the blood lactate kinetics during incremental running test performed two successive days. Eight male endurance runners participated in incremental running test performed two successive days. The main finding was that the blood glucose was significantly lower in the second day than the first day during incremental test, although blood glucose was not different at rest in both days. However, blood lactate was not different form rest to fifth stages in both days, significantly lower only at the final stage in the second day than the first day. Respiratory exchange ration were lower in the second day compared to the first day. GT was significantly higher in the second day than the first day, but LT was not different in both days. We concluded that low glycogen storage effected blood glucose kinetics more than blood lactate kinetics, and resulted in only the change of GT.抄録全体を表示PDF形式でダウンロード (1279K) -
関 博之, 与那 正栄, 内藤 祐子, 室 増男2011 年 60 巻 2 号 p. 229-237
発行日: 2011年
公開日: 2011/05/18
ジャーナル フリーThe effect of forearm and upper limb muscles vibration during extension and flexion movement of wrist and elbow was studied in 10 normal human subjects. In first experiment, a vibratory stimulation was applied to either the flexor carpi ulnaris (FCU) or the biceps brachii (BB) muscle during simple and simultaneous extension movement about wrist and elbow. In second experiment, vibratory stimulation was applied to either the extensor carpi radialis (ECR) or the triceps brachii (TB) muscle during simple and simultaneous flexion movement about wrist and elbow. The main new findings of the present study are as follows. During simple and simultaneous extension-flexion movements of the elbow, the application of vibration to the FCU or to the ECR produced an undershoot of the target position. However, no undershoot was observed by the application of vibration to the BB or the TB during simultaneous extension-flexion movements of the wrist. From these results, it was revealed that although there are cases where the phenomenon of undershoot resulting from vibration of the wrist and elbow during simple and simultaneous movements corresponds to the type of synaptic connection from muscle spindle group Ia sensory inputs to alpha motor neurons, as identified by Cavallari & Katz (1989) and Cavallari et al. (1992), the manifestation of undershoot is influenced by differences between the movement patterns of the wrist and elbow joints, as well as the differences between simple movement and simultaneous movement.抄録全体を表示PDF形式でダウンロード (1368K) -
大久保 善郎, 清野 諭, 藪下 典子, 松尾 知明, 大須賀 洋祐, 金 美芝, 鄭 松伊, 根本 みゆき, 大月 直美, 田中 喜代次2011 年 60 巻 2 号 p. 239-248
発行日: 2011年
公開日: 2011/05/18
ジャーナル フリーBACKGROUND: The purpose of this study was to examine the association between habitual walking and multiple or injurious falls among community-dwelling older adults. METHODS: Cross-sectional analysis was conducted on the data from 708 community-dwelling older adults, aged 60-91 years (72.3 +/- 6.6 yr, 233 men and 475 women). Prevalence of falls between walkers and non-walkers was compared separately by the number of risk factors (Groups R0, R1, R2, R3 and R4+). Logistic regression analysis was used to assess the association between habitual walking and falls separately by lower (R<3) and higher (R3+) risk groups. An interaction between habitual walking and risk of falling was examined in logistic regression analysis among all participants. RESULTS: In Groups R0, R1 and R2, prevalence of falls was lower in walkers than non-walkers; however, in Groups R3 and R4+, prevalence of falls was higher in walkers. Logistic regression analysis showed that habitual walking was significantly associated with fewer falls (Odds ratio (OR): 0.44, 95% confidence interval (CI): 0.20-0.97) among the lower risk group, but significantly associated with greater falls (OR: 4.61, 95% CI: 1.32-16.09) among the higher risk group. The interaction between habitual walking and higher risk of falling was significant (P < 0.05). CONCLUSION: Habitual walking seems to positively affect the prevention of multiple or injurious falls but only in community-dwelling older adults who have less than three risk factors.抄録全体を表示PDF形式でダウンロード (1237K) -
松原 建史, 樋口 慶亮, 峰 祐子, 柳川 真美, 山口 靖子, 樋口 ゆう子, 神宮 純江, 進藤 宗洋, 小池 城司2011 年 60 巻 2 号 p. 249-257
発行日: 2011年
公開日: 2011/05/18
ジャーナル フリーThe purpose of this study was to elucidate the relation between double product break point (DPBP) and pulse wave velocity (PWV).
Two hundred three healthy Japanese females were studied (mean age; 53.5 +/- 11.7 years old). The DPBP was measured by continuous incremental exercise test with a bicycle ergometer (ML-3600, Fukuda Electronic Co. Ltd). The work rate at DPBP was converted into metabolic equivalents (METs@DPBP). The brachial-ankle PWV (baPWV) was also measured. In addition, height, weight and mean blood pressure (mBP) were measured and physical activity condition in daily life (PA) was evaluated by questionnaire.
The mean METs@DPBP was 5.0 +/- 0.7 METs. The mean baPWV was 1,373 +/- 254 cm/ sec. The relation between METs@DPBP and baPWV was investigated with the use of multiple linear regression models with adjustment for affecting factors of baPWV.
In this study, it was identified that there was a significantly inverse relation between METs@DPBP and baPWV (p <0.01). This finding was independent from age, height, weight, mBP and PA. Thus, there was an inverse relation between sub-maximal aerobic capacity and arterial stiffness.抄録全体を表示PDF形式でダウンロード (1072K)
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