著者

石渡 貴之

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.68, no.1, pp.44, 2019 (Released:2019-01-17)

参考文献数

3

著者

後藤 一成

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.64, no.1, pp.45, 2015 (Released:2015-01-25)

著者

鈴木 宏哉 田中 茂穂 城所 哲宏 高倉 実 喜屋武 享 安部 孝文 田中 真紀 田中 千晶

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.68, no.1, pp.59, 2019

著者

森 健一 吉岡 利貢 白松 宏輔 苅山 靖 尾縣 貢

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.60, no.5, pp.503-510, 2011 (Released:2011-11-15)

参考文献数

31

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The purpose of this study was to investigate the influence of physiological factors which effect oxygen kinetics and energy system contribution on the power of Wingate test (WT), with focusing on the difference of aerobic capacity. Twenty three male track and field athletes (sprinters, long distance runners and decathletes) performed the WT on electromagnetic-braked cycle ergometer. The applied resistance was 7.5% of body weight, and the duration was 60 seconds. Moreover, aerobic capacity (maximal oxygen uptake [VO2max]) was determined by an incremental test, and anaerobic capacity (maximal accumulated oxygen deficit [MAOD]) was determined by a supramaximal constant load test. The oxygen uptake during each test was recorded by a breath-by-breath method. The participants were divided into two group which was high VO2max group (High group; n = 11) and low VO2max group (Low group; n = 12). In the results, although the VO2max was significantly higher in the High group, the MAOD was not significantly different between two groups. The oxygen uptake during WT was significantly higher in the High group, and the accumulated oxygen deficit during WT was significantly higher in the Low group. The aerobic contribution was significantly higher in the High group than in the Low group. In contrast, the anaerobic contribution was significantly higher in the Low group than in the High group. These results suggest that by the difference of aerobic capacity, aerobic and anaerobic energy supply contribution was different in WT.

著者

永富 良一

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.60, no.1, pp.81, 2011 (Released:2011-03-30)

著者

原村 未来 高井 洋平 山本 正嘉 金久 博昭

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.66, no.1, pp.101-110, 2017-02-01 (Released:2017-01-21)

参考文献数

34

被引用文献数

1

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This study aimed to clarify the differences in cardiorespiratory and metabolic responses to body mass-based front lunge and squat exercises with relation to muscular activity. Seven healthy adult males performed 200 times body mass-based squat and front lunge exercises. During the exercises, oxygen uptake, heart rate (HR), blood lactate concentration (La), ground reaction force were measured. Oxygen uptake was divided by body mass (VO2). VO2 and HR was normalized to maximal VO2 (%VO2max) and maximal HR (%HRmax) obtained from an incremental load test. Electromyograms (EMGs) during the two exercises were recorded from the vastus lateralis (VL), rectus femoris, vastus medialis (VM), biceps femoris, gluteus maximus (GM). EMG amplitudes during both exercises were normalized to those during maximal voluntary contraction, and expressed as relative value (%EMGMVC). Time that cardiorespiratory parameters became stable was 4-6 min in both exercises. VO2, %VO2max, metabolic equivalent, were higher in the front lunge than the squat. No significant differences in HR, %HRmax and La were found between both tasks. %EMGMVC in VL, VM and GM were higher in the front lunge than the squat. These current findings indicate that 1) body mass-based squat and front lunge exercises are physiologically of more than moderate intensity, and 2) the cardiorespiratory responses to body mass-based front lunge are greater than those to body mass-based squat. This may be due to the difference in muscular activities of VL, VM and GM during the tasks.

著者

髙木 誠一

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.68, no.1, pp.37, 2019 (Released:2019-01-17)

著者

森本 武利

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.56, no.1, pp.9-10, 2007-02-01 (Released:2007-05-15)

参考文献数

7

被引用文献数

1 1

著者

佐藤 菜穂子

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.67, no.6, pp.431-437, 2018-12-01 (Released:2018-11-21)

参考文献数

28

被引用文献数

1

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Although street dance quickly became popular in Japan, and the population of street dancers is increasing, there is limited information on injuries sustained during street dance in Japan. The purpose of this study was to investigate the epidemiology of injuries in street dancers in Japan. One hundred and ninety-five Japanese street dancers (92 intermediate, 35 advanced, and 68 expert dancers) participated in this study. A questionnaire survey concerning the injuries sustained during dancing was conducted over a 3-month period. The main results were: (1) Sixty-one dancers reported a total of 72 injuries, and injury rate was 0.56 per 1000 players-hours; (2) Ankle injuries accounted for 45.8% of the reported injuries; (3) Dancing proficiency level was related to the occurrence of injury, and the occurrence was significantly higher for the expert dancers; (4) The duration of warm-up was related to the occurrence of pains. These findings provide fundamental information that may contribute to the development of injury prevention in street dance.

著者

岩山 海渡

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.67, no.5, pp.351-356, 2018-10-01 (Released:2018-09-25)

参考文献数

33

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This review aimed to verify the effect of exercise and meal timing on energy metabolism. Many people are exercising and playing sports in their own spare time. Although guidelines for daily exercise for healthy life suggest indications of intensity and frequency, there is no instruction about when exercise should be performed. However, there are some diurnal variations in energy metabolism responses to exercise and food intake. In addition, exercise performed before meals and vice versa are different stimuli to whole body energy metabolism, respectively. Further research is required to optimize that translating the results in laboratory to real life, because with growing diversity in lifestyle.

著者

上野 薫 前濱 良太 国正 陽子 牧野 晃宗 佐野 加奈絵 貴嶋 孝太 Komi Paavo V 石川 昌紀

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.67, no.6, pp.383-391, 2018-12-01 (Released:2018-11-21)

参考文献数

38

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The purpose of the present study was to examine characteristics of muscle anatomical cross-sectional area (CSA) for different regions from proximal to distal parts of each muscle of the hamstring muscles in high-level sprinters, and to examine the relationship with those and the sprint performance. The CSA of the semitendinosus (ST), semimembranosus (SM), biceps femoris long head (BFL) and biceps femoris short head (BFS) at the four different region of hamstring muscles for twenty sprinters (SPRINT) and twenty healthy male control subjects (CTRL) were measured by using B-mode ultrasonography. The measured regions were divided into four parts from proximal to distal parts (PRO1, PRO2, DIS2, DIS1). The results clearly showed that absolute CSA values in distal parts for all muscles together with PRO2 in ST were greater in SPRINT than in CTRL. When relative CSA values to the entire hamstrings muscles in each region were compared, only relative CSA at PRO1 in ST was greater in SPRINT than in CTRL, conversely, that at proximal regions in BFL and distal regions in BFS were smaller in SPRINT. In the relationships with sprint performance, the CSAs at PRO1 and PRO2 in ST and at PRO1 in SM were only related negatively. These results suggest that distal parts of hamstring muscles for SPRINT may be characteristics for sprint runners. However, the movements related to the specific hypertrophy (PRO1 and PRO2 in ST, PRO1in SM) may play important roles of the improvement of their sprint performance.

著者

田平 一行

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.66, no.1, pp.16, 2017 (Released:2017-01-21)

著者

宮田 浩文

出版者

一般社団法人日本体力医学会

雑誌

体力科學 (ISSN:0039906X)

巻号頁・発行日

vol.61, no.1, 2012-02-01

著者

安 栽漢 桜井 伸二 金 興烈

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.56, no.1, pp.167-178, 2007-02-01 (Released:2007-05-15)

参考文献数

26

被引用文献数

1 2

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The purpose of this study was to compare muscle activity of the lower limb during treadmill running under five different gradient conditions (level, left and right inclines, downward and upward). All inclines were of 14% grade and tilted toward the left, the right, downward and upward directions of the runner. Twelve young healthy males ran at 2.8 m/s. Electromyographic activities of the following seven muscles-gluteus maximus, biceps femoris, rectus femoris, vastus lateralis, tibialis anterior, medial gastrocnemius, and solues-were measured using bipolar surface electrodes during treadmill running under five different conditions. Results showed that left and right inclined surfaces had only little influence on muscular activity. However, for all of the muscles measured, the activity of the lower-positioned leg was greater than that of the higher-positioned leg. During the upward incline trial, all the muscles showed greater activity than for the other trials. The downward slope tended to give the anterior muscles greater activity, and the posterior muscles less activity, compared to level running.

著者

樫村 修生 酒井 秋男

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.55, no.1, pp.145-154, 2006-02-01 (Released:2007-04-04)

参考文献数

22

被引用文献数

1 1

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This study reviewed the influence of hypoxic training on hypoxic pulmonary vasoconstriction (HPV) sensitivity in the isolated perfused lungs preparation of rats. In addition, the study examined the kind of mechanism involved. Therefore, we inhibited nitric oxide (NO) release of endothelial cells, using on NO synthase inhibitor, and reviewed the impact on HPV.As a result, the following became clear. 1)Hypoxic training inhibited HPV. 2) HPV was increased by the administration of NO synthase inhibitor L-NMMA, in particular, conspicuously inhibited HPV in the hypoxic training group was increased. 3) The negative correlation between the onset of blood lactate accumulation and HPV was significant.From the above, it can be concluded that hypoxic training inhibited HPV and NO release for a pulmonary vascular endothelial cell. In addition, we understood that HPV was decreased by hypoxic training as the ability for endurance exercise was increased.

著者

八田 秀雄

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.63, no.1, pp.32, 2014 (Released:2014-01-24)

著者

図子 浩二 西薗 秀嗣 平田 文夫

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.47, no.5, pp.593-600, 1998-10-01

参考文献数

22

被引用文献数

4 2

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A study was conducted to investigate the relationship between the characteristics of torque production with special reference to eccentric and concentric muscle contraction and the structural and functional properties at the lower limb joints in the human kinetic chain. Ten male college athletes were tested with a isokinetic dynamometer (biodex) for eccentric and concentric torques during extension and flexion at the hip and knee, and plantar flexion and dorsiflexion at the ankle (angular velocity ; 30, 60, 120 deg/s) . The peak eccentric and concentric torques were higher in the order hip, knee and ankle joints, as the size of each muscle acting on its joint increased. However, the rate of peak concentric to eccentric torque (CON/ECC, %) was higher at the ankle joint than at the hip and knee joints. They tended to increase in the order of angular velocity ; 30, 60, 120 deg/s. These results suggest that the ankle joint is charactered by higher eccentric torque production. This characteristic is probably due to the fact that (1) the ankle joint is located at the end of the human kinetic chain and plays a role in transmitting the power to the ground effectively, (2) the muscle tendon complex acting at the ankle joint must have increased stiffness and tolerate great stretch loads to store and reuse the amount of elastic energy, (3) the hip and knee joints located at the center are the main sources of power supply. On the other hand, no significant correlations were observed among the torques at the hip, knee and ankle. These results suggest that torque production is independent at each of the lower limb joints, and is based on the structural and functional properties of each joint. These findings seem to be useful to clarifying the methods of strength and power training that can be adapted to the characteristics of torque production and the structural and functional properties of the hip, knee and ankle joints.

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.58, no.6, pp.887-889, 2009-12-01 (Released:2010-01-18)

著者

澤田 亨

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.67, no.1, pp.25, 2018 (Released:2018-01-19)

参考文献数

11

著者

大橋 啓太 小野 くみ子 川手 勇也 渡瀬 涼 石川 朗

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.67, no.4, pp.303-309, 2018-08-01 (Released:2018-07-18)

参考文献数

16

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The aim of this study was to investigate the effects of the difference in the ways to carry a baby using a baby carrier on the respiratory response during upslope walking. Fourteen healthy adults participated in this study. We set the individualized walking speed at 30% of the maximum oxygen uptake at 0% grade. The test began at 0% grade walking on the treadmill and increased by 2% every 5 min until 8%. The test was performed randomly in these two conditions: holding an infant model weighing approximately 15% of body weight in front of the subject with a baby carrier (F) and backpack with a baby carrier (B). Heart rate (HR), oxygen uptake (VO2), minute ventilation (VE), tidal volume (TV), respiratory exchange ratio (R), and respiratory rate (RR) were measured and the values from the last 1 min of each grade were averaged. HR, VO2, VE, TV, R, and RR significantly increased with increasing grade in each condition. There were no significant differences in interaction effects in HR, VO2, VE, TV, R, and RR. This study suggests that the difference in the ways to carry a baby using a baby carrier has no effects on the respiratory response during upslope walking at a speed corresponding to 30% of the maximum oxygen uptake at 0% grade until 8% grade.