著者

藤本 繁夫 田中 繁宏

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.4, pp.453-459, 1998-08-01 (Released:2010-09-30)

参考文献数

27

被引用文献数

2 1

著者

林 容市 岡野 亮太 平林 正晴 片山 靖富 沼尾 成晴 松尾 知明 中田 由夫 田中 喜代次

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.57, no.2, pp.197-206, 2008-04-01 (Released:2008-08-13)

参考文献数

29

被引用文献数

1

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The aim of this study was to examine a weight reduction program and residual effects, through confirming the relationship between changes in the morphological and psychological indices including personality and self-efficacy (SE) of the participants. Twenty-five middle-aged women were divided into two groups based on type of weight reduction program intervention. Thirteen women participated in a 3-month diet-only weight reduction program (DO group, 53.3±7.4 yr), and 12 women took part in a 3-month diet and aerobic exercise program (DE group, 48.3±9.6 yr). After the programs, the compatibility score of personality in the DO group was negatively correlated to SE that is indicated as confidence in ability to maintain decreased body weight at 2, 3, and 4 years after the program (r=-0.69, -0.58, and -0.60). It can be seen that personality has an effect on the results of the DO group weight reduction program. Additionally, despite a significant decrease in body-weight and %fat in both groups, only the change of %fat significantly correlated with SE. On the basis of these correlations, the changes of %fat that related to the movability perception of body movements has a greater effect on SE after the program than the information only of weight loss. The results of this study suggest that personality and SE accounted for weight maintenance, and were associated with the results of the weight reduction program.

著者

多胡 陽介 浦田 達也 芳田 哲也

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.71, no.4, pp.305-318, 2022-08-01 (Released:2022-07-12)

参考文献数

83

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In this study, we searched the relevant literature for studies involving the number of tackles and wins/losses in a rugby match, the movement of the tackler and ball carrier, the momentum of tackles, the technique and physical fitness of tacklers, and the risk of injury in order to examine the factors contributing to a successful tackle. As a result, it was found that professional players had a higher success rate of tackles than amateur players younger than 20 years of age. However, the number of tackles per match and the relationship between the success rate of tackles and the results of the match differed depending on the competitive level and the country/region. Regarding tackle movements, the success rates of shoulder tackles were higher than those of other types of tackles. High-level players performed shoulder tackles with both shoulders and both hips facing the ball carrier (body position square), with their trunk roughly parallel to the ground. Furthermore, high-level players had a high body mass; thus, they tackled with high momentum (velocity × mass). Regarding physical fitness, high-level tackling techniques required maximum strength and power in the lower and upper limbs, and also improving the maximal aerobic capacity and overall agility may help prevent fatigue and thus positively contribute to successful tackling. This review suggested that young rugby players need to improve their tackling techniques, including adopting a posture with a straight spine and leg-drive, as the risk of concussion among novices was higher than that among experts.

著者

松本 卓也 松永 篤彦 原 美弥子 齊藤 正和 米澤 隆介 石井 玲 忽那 俊樹 山本 壱弥 増田 卓

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.57, no.3, pp.315-326, 2008-06-01 (Released:2008-08-13)

参考文献数

32

被引用文献数

4 5

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PURPOSE : The purpose of this study was to clarify the effects of prolonged expiration (PE) on respiratory and cardiovascular responses and autonomic nervous activity during the exercise.METHODS : Twenty-five healthy men (22±1years) were classified according to the breathing mode during the exercise : 2-second inspiration and 4-second expiration in 1 : 2 group, 3-second inspiration and 3-second expiration in 1 : 1 group and normal breathing in control group. The 6-minute exercise was performed at anaerobic threshold (AT) and 60%AT using a cycle ergometer as an exercise protocol. Respiratory rate (RR) and tidal volume (TV) were measured by the expired gas analysis. The power of low- (LF) and high-frequency components (HF) was analyzed from a Holter electrocardiogram to assess the heart rate variability. RESULTS : RR and LF/HF were significantly lower, TV and HF were significantly higher during the exercise of 60%AT and AT in the 1 : 1 and 1 : 2 groups than in the control group (P<0.05 or P<0.01). The increase of HR was significantly lower and that of HF was significantly higher during the exercise at 60%AT in the 1 : 2 group than in the 1 : 1 group (P<0.05). CONCLUSION : PE activated the parasympathetic nervous activity and consequently restrained an excessive increase of HR during the exercise at 60%AT.

著者

岡﨑 和伸

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.70, no.1, pp.52, 2021 (Released:2021-01-13)

著者

田中 喜代次 大山卞 圭悟 根来 宏光 和久 夏衣 三輪 好生

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.71, no.3, pp.287-292, 2022-06-01 (Released:2022-05-10)

参考文献数

10

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Pelvic floor trauma developing into pelvic frailty is a significant concern in urogynecology or orthopedics. The majority of women who have experienced vaginal childbirth are affected, to a certain extent, by some form of pelvic floor damage, thereby eliciting substantial alterations of functional anatomy in the pelvic cavity which are manifested as urinary incontinence or pelvic organ prolapse (e.g., uterine prolapse). With the above in mind, medical researchers, continence experts, and continence exercise practitioners in the research areas of sports medicine and rehabilitation medicine believe that the coordinated activity of pelvic floor muscles, in association with the abdominal muscles, is a prerequisite for urinary and defecatory continence. Since the pelvic floor forms the base of the abdominal cavity, stronger pelvic floor muscles are crucial in maintaining such capabilities. Opposing action of the abdominal and pelvic floor muscles ensures that exercises for one may also strengthen the other. Appropriate abdominal maneuverability or logical exercise training of the abdominal muscles may thus be beneficial in maintaining not only strength but also coordination, flexibility, and endurance of pelvic floor muscles and abdominal muscles. Such exercises, collectively known as pelvic floor muscle training, may be effective for long-term pelvic cavity care and also in rehabilitating cases of pelvic floor dysfunction. Further research is needed, however, in determining whether pelvic floor muscle function can be truly enhanced or maintained by such exercises in cases of pelvic floor dysfunction and/or decreased urinary continence.

著者

甲斐 裕子 神藤 隆志 山口 大輔 吉葉 かおり 河原 賢二 荒尾 孝 石倉 恭子

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.70, no.1, pp.39, 2021 (Released:2021-01-13)

著者

黒川 泰嗣 岩橋 眞南実 柳岡 拓磨 長谷川 博

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.71, no.2, pp.193-203, 2022-04-01 (Released:2022-03-14)

参考文献数

41

被引用文献数

1

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Prolonged exercise in a hot environment increases the minute ventilation (VE) and respiratory rate (RR) with an increase in core temperature. This hyperthermia-induced hyperventilation decreases the partial pressure of arterial blood carbon dioxide (PaCO2). Conversely, nasal breathing during exercise has been reported to produce low VE and RR values and high PaCO2 values; however, no studies have investigated this in hot environments. Therefore, the purpose of this study was to clarify the effect of nasal breathing on estimated partial pressure of carbon dioxide in arterial blood (PaCO2,estimate) during prolonged exercise in a hot environment. Twelve university endurance athletes participated in the study and performed a 40-minutes steady-state cycling exercise at an intensity of 55% of peak oxygen uptake in a hot environment (room temperature 35℃, relative humidity 40%). Using randomized crossover design, two experiments were performed—nasal breathing condition (NB) and mouth breathing condition (MB). Moreover, physiological indices were measured during the exercise. Rectal temperature increased in both conditions, but there was no significant difference between these conditions. PaCO2,estimate values were significantly higher in NB between 10 minutes and 40 minutes of exercise (p < 0.05) compared to MB, and decreased with time in MB. Compared to MB, the VE was significantly lower in NB between 30 minutes and 40 minutes (p < 0.05), while the RR was significantly lower in NB between 25 minutes and 40 minutes of exercise (p < 0.05). Therefore, nasal breathing during a prolonged moderate-intensity exercise in a hot environment prevented the decrease in PaCO2,estimate due to hyperthermia-induced hyperventilation.

著者

田渕 鳴利

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.69, no.1, pp.67, 2020

著者

門間 陽樹

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.71, no.1, pp.42, 2022 (Released:2022-01-14)

著者

門間 陽樹 本田 貴紀

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.71, no.1, pp.40, 2022 (Released:2022-01-14)

著者

本橋 紀夫

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.69, no.1, pp.36, 2020 (Released:2020-01-21)

著者

齊藤 訓英 山本 利春 笠原 政志

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.70, no.3, pp.219-228, 2021-06-01 (Released:2021-05-13)

参考文献数

54

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A few studies have reported that nighttime sleep and daytime napping are significantly associated with sleep disorders, memory, concentration, cognitive ability, and academic performance in children. Moreover, sleep is identified as an important factor that has a profound effect on children’s athletic performance. If a short daytime nap is shown to benefit children involved in sports activities, this evidence could be used to improve children’s athletic performance in the afternoon. In this study, we investigated whether a short daytime nap could reduce the decline in athletic performance observed in the afternoon in children involved in basketball games. We investigated 10 elementary school-age male basketball players. The study was performed under two conditions, with and without a 20-min nap during the lunch break, and evaluation was performed under both conditions for 3 days each. The reaction and 20-m sprint times were measured after morning practice, before afternoon practice, and at the end of practice on all days. At the beginning of afternoon practice, the 20-m sprint time was significantly shorter (p<0.05) in the no-nap group (4.18±0.27 s) than in the nap group (4.24±0.24 s). In conclusion, our results suggest that a short daytime nap in children may reduce the decline in exercise performance observed in the afternoon.

著者

眞鍋 康子 宮武 正太

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.17, 2015 (Released:2015-01-25)

著者

三井 みのり 下河内 洋平 楠本 繁生 笹壁 和佳奈 小菅 萌

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.71, no.1, pp.78, 2022 (Released:2022-01-14)

著者

沼澤 俊

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.71, no.1, pp.122, 2022 (Released:2022-01-14)

著者

猪飼 道夫 吉沢 茂弘 中川 功哉

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.10, no.4, pp.227-238, 1962-05-30 (Released:2010-09-30)

参考文献数

7

著者

高橋 啓悟 白井 祐介 鍋倉 賢治

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.69, no.5, pp.371-381, 2020-10-01 (Released:2020-09-16)

参考文献数

49

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This study aimed to elucidate the effects of exercise intensity on stretch-shortening cycle (SSC) function of the lower limbs after cycling. Ten male triathletes performed a cycling graded test to determine the ventilatory threshold (VT) and two hopping-cycling (30 min of cycling at 90 or 110% VT)-hopping tests. The two hopping-cycling-hopping tests performed in random order. Power output (PO), heart rate (HR) and rate of perceived exertion (RPE) were monitored throughout the 30-min cycling. Blood lactate concentrations (BLa) were measured in order to assess metabolic stress. The SSC function was calculated as the ratio of the jump height to the time spent in contact with the ground (reactive strength index [RSI]). PO, HR and RPE values during cycling at 110%VT was higher than at 90%VT (p < 0.01). BLa value after the cycling at 110%VT was higher than at 90%VT (90%VT: 2.4±1.0 vs. 110%VT: 5.9±2.8 mmol/L, p < 0.01). Regardless of the cycling exercise intensity, the RSI significantly decreased after the cycling exercise (p < 0.01). The RSI remained decreased at 15 min after the cycling exercise (p < 0.05). These results demonstrated that the SSC function decreased after cycling. Exercise intensity during cycling is likely to have no effect on the decrease in SSC function.

著者

吉田 泰郎

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.8, no.1, pp.52-64, 1958-10-01 (Released:2010-09-30)

参考文献数

27

著者

平田 庸子 弘原海 剛 濱田 尚美 白井 麻子 渡辺 一志

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.70, no.4, pp.269-276, 2021-08-01 (Released:2021-07-15)

参考文献数

40

被引用文献数

1

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This study aimed to clarify the effects of carbohydrate mouth rinse on exercise performance. We examined the effect of mouth rinse on fatigability. Thirty healthy male college students completed three trials with non mouth rinse (CON), mouth rinse intervention of 6% glucose (GMR), and artificial sweetener (PLA). Handgrip exercise was performed as a fatigue task. The subjects performed a 10-seconds maximal voluntary contraction (MVC) followed by a 40% MVC rhythmic grasping movement for 14 per minutes, followed by a 4-seconds rest. This set of exercises was performed for a total of ten sets. Mouth rinse was performed from the 5th set to the 10th set. The subjects were divided into three groups: L, M, and S, according to the degree of decrease in MVC due to fatigue in CON. The effect was evaluated using the rate of change in MVC after the mouth rinse. The evaluation was performed for each trail and group. In the L group, mouth rinse significantly improved the rate of change of MVC compared with the other trials (GMR vs. CON: P = 0.002; PLA vs. CON: P = 0.042). A significant trend was observed in the M (GMR vs. CON: P = 0.062), but not in the S. In conclusion, the effects of mouth rinse differed depending on fatigability in isometric hand grip performance, with mouth rinse inhibiting the decrease of motor fatigue. In addition, it was suggested that the sweetness of carbohydrates may have an effect on mouth rinse.