著者

藤岡 正子 佐古 隆之 木目 良太郎 村瀬 訓生 長田 卓也 下村 浩祐 白石 聖 勝村 俊仁 佐藤 和人

出版者

イセブ

雑誌

日本運動生理学雑誌 (ISSN:13403036)

巻号頁・発行日

vol.17, no.2, pp.35-42, 2010-07

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The purpose of this study was to determine whether 6 weeks handgrip endurance exercise training affects resting muscle metabolic rate in forearm flexor muscles. Eight healthy female subjects (22±0yr) performed dynamic handgrip exercise training until exhaustion at 30% of maximum voluntary contraction, 1Hz (0.5s contraction, 0.5s relaxation). Aerobic exercise for localized muscle training was carried out for 1 set per day, 5 days a week, for 6 weeks. Resting muscle metabolic rate, and time constant for phosphocreatine (PCr) recovery as an index of muscle oxidative capacity were measured using ^<31>P magnetic resonance spectroscopy (^<31>P-MRS) pre- and post-training. Performance time was evaluated during handgrip exercise at 30% MVC. The time constant tended to be shorter post-training (46.6±2.9s) compared with pre-training (50.7±2.8s) (p=0.07). After training, the performance time (84.5±5.8s) was significantly longer than pre-training (52.9±3.5s) (p<0.05). No significant difference of resting metabolic rate was found between pre- and post-training (5.8±0.4, 6.0±0.3μM ATP/s pre- and post-training, respectively). These results suggest that the resting muscle metabolic rate in forearm flexor muscles was unchanged by localized aerobic exercise training, even though muscle endurance capacity improved.

著者

日本運動生理学会事務局 [編]

出版者

イセブ

巻号頁・発行日

1994

著者

藤本 哲男

出版者

日本運動生理学会

雑誌

日本運動生理学雑誌 (ISSN:13403036)

巻号頁・発行日

vol.4, no.2, pp.161-166, 1997-08-30

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The purpose of this experiment was to test whether a mechanical circulatory simulator (MCS), which has been developed in order to evaluate characteristics of artificial organs, could be used to simulate exercise stress tests. The MCS consists of an atrium, an aorta and a ventricle which is driven by a DC motor. It is important to reproduce natural hemodynamic conditions in the MCS. At first, a computational simulation model, which can simulate natural circulatory reactions to exercise stress tests, was developed. Utilizing an algorithm in the model, a blood pressure control system was installed in the MCS. A personal computer used aortic pressure feedback to calculate proper cardiac output, heart rate and total peripheral resistance to control the MCS. Hemodynamic data including aortic pressure, heart rate, cardiac output and total peripheral resistance obtained in the MCS was similar to that from exercise stress tests conducted on a goat using a treadmill (3.2km/h). As a result, the new MCS, with the blood pressure control system, is now considered more effective than previous simulators in exercise stress testing for the aged.

著者

浜野 学 大橋 信行 松田 竜太郎 清田 寛 大和 眞 川上 隆史

出版者

日本運動生理学会

雑誌

日本運動生理学雑誌 (ISSN:13403036)

巻号頁・発行日

vol.5, no.1, 1998-03-31

著者

遠藤 洋志 三村 達也 高橋 英幸 水野 康 板井 悠二 浅野 勝己 山形大学 阪南大学 筑波大学体育科学系 筑波大学体育科学系 筑波大学臨床医学系 筑波大学体育科学系

雑誌

日本運動生理学雑誌 = Journal of exercise and sports physiology (ISSN:13403036)

巻号頁・発行日

vol.5, no.1, pp.83, 1998-03-31 (Released:2017-02-27)

著者

山崎 先也 岡本 啓 松久 ミユキ 野原 隆司 田口 貞善

出版者

日本運動生理学会

雑誌

日本運動生理学雑誌 (ISSN:13403036)

巻号頁・発行日

vol.8, no.2, pp.99-105, 2001-10-31

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The purpose of this study was to compare the bone turnover between eleven young female rhythmic sports gymnasts(aged 19-21 yr.)and nine sedentary control female subject(aged 21-22 yr.). The gymnasts were training 4-6 hours per day, 7 times per week with dieting. Bone turnover was assesed using speciific biomarkers of formation(serum intact osteocalcin)and resorption(the 24 hours urinary deoxypyridinoline). The gymnasts had significantly lower percent fat and body weights than the control females. The gymnasts showed significantly lower levels of serum calcium but slightly higher urinary calcium concentrations compared with the controls. The gymnasts had significantly higher bone resorption and lower bone formation compared with the control females. The findings suggest that an increased bone resorption in the female rhythmic sports gymnasts may cause loss of bone mass which was probably due to the vigorous exercise training under dieting regimes.

著者

田中 喜代次 金 憲経 中西 とも子 天貝 均

出版者

日本運動生理学会

雑誌

日本運動生理学雑誌 (ISSN:13403036)

巻号頁・発行日

vol.6, no.1, pp.37-45, 1999-01-30

被引用文献数

14

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The results of early work completed using bioelectrical impedance for body composition assessment was limited by technological problems. Most of the research has focused on bioelectrical impedance conducted at a frequency of 50 kHz. It has been recently determined that low- and high-frequency bioelectrical impedance measurements can be used to distinguish the volume of extracellular water (ECW) from the volume of total body water (TBW). Therefore, a multi-frequency bioelectrical impedance method allows an independent assessment of ECW, TBW, and intracellular water (ICW). Using dual energy X-ray absorptiometry (DXA; Lunar DPX-L) as a reference method, we examined the validity of bone mineral content and bone-free lean tissue mass (LTM) measured by a multi-frequency bioelectrical impedance instrument (MLT-100, Sekisui) using a number of frequencies ranging from 2.5 kHz to 350 kHz applied to the right side of the body. The subjects were 52 men and 109 women, aged 23 to 86 years (men: 53.2±17.37 yr, women: 52.5±17.07 yr). The average LTM determined by DXA were 49.4± 5.92 kg for men and 35.6±4.35 kg for women. Multiple regression equations developed in the present study for estimating LTM were: LTM=0.306X_1+0.003X_2+0.098X_3+3.44 (R=0.948, SEE=1.93 kg) for men LTM=0.169X_1+0.003X_2+0.186X_3+5.75 (R=0.917, SEE=1.76 kg) for women where X_1=Ht^2/R_<HIGH>, X_2=H^3/1000 and X_3=Ht^2/R_<LOW> an R_<HIGH> and R_<LOW> stand for resistance of TBW and resistance of ECW, respectively. These equations may be used to evaluate body composition for a wide range of Japanese adults with reasonable accuracy.

著者

大貫 義人

出版者

日本運動生理学会

雑誌

日本運動生理学雑誌 (ISSN:13403036)

巻号頁・発行日

vol.1, no.1, 1994-01-29