著者

山田 実

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.34, 2017

著者

大野 誠 池田 義雄

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.42, no.3, pp.317-325, 1993-06-01 (Released:2010-09-30)

参考文献数

15

著者

根本 裕太 菊賀 信雅 澤田 亨 松下 宗洋 丸藤 祐子 渡邊 夏海 橋本 有子 中田 由夫 福島 教照 井上 茂

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.5, pp.431-441, 2022-10-01 (Released:2022-09-13)

参考文献数

35

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Approximately 40%–65% of new fitness club (FC) members cancel their membership within 6 months. To prevent such cancellations, it is essential to identify members at high risk of doing so. This study developed a model to predict the probability of discontinuing FC membership among new members. We conducted a cohort study and enrolled participants from 17 FCs in Japan. We asked 5,421 individuals who became members from March 29, 2015 to April 5, 2016 to participate in the study; 2,934 completed the baseline survey, which was conducted when the participants became FC members. We followed up the participants until September 30, 2016. We excluded 883 participants with missing values and 69 participants under aged 18 years; thus, our analysis covered 1,982 individuals. We conducted the random survival forest to develop the prediction model. The mean follow-up period was 296.3 (standard deviation, 127.3) days; 488 participants (24.6%) cancelled their membership during the follow-up. The prediction model comprised 8 predictors: age; month of joining FC; years of education; being under medical follow-up; reasons for joining FC (health improvement, relaxation); and perceived benefits from exercise (maintaining good body weight, recognition of one’s ability by other). The discrimination and calibration were acceptable (C statistic: 0.692, continuous ranked probability score: 0.134). Our findings suggest that the prediction model could assess the valid probability for early FC cancellation among new members; however, a validation study will be needed.

著者

片山 敬章

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.61, no.1, pp.31, 2012 (Released:2012-03-14)

著者

田舎中 真由美 青木 芳隆

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.255-261, 2022-06-01 (Released:2022-05-10)

参考文献数

30

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Recently, pelvic floor muscle training has become popular not only in health magazines but also in women’s magazines, on television and on social networking services. The pelvic floor muscles are difficult to visually confirm movement of in a clothed situation, making it difficult to get a sense of muscle contraction; and, thus, there are many cases of incorrect training leading to pelvic floor dysfunction, including urinary incontinence and pelvic organ prolapse, and significant reduction of quality of life and healthy life expectancy. Therefore, the ability of instructors to teach appropriate pelvic floor muscle training is an important key to the prevention and improvement of pelvic floor dysfunction. The purpose of this review is to understand the functional anatomy and motor function of the pelvic floor muscles and to disseminate evaluation and training practices for preventing and improving pelvic floor dysfunction such as urinary incontinence and pelvic organ prolapse.

著者

中井 誠一 新矢 博美 芳田 哲也 寄本 明 井上 芳光 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.4, pp.437-444, 2007-08-01 (Released:2007-09-14)

参考文献数

40

被引用文献数

11 14

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The guidelines for the prevention of heat disorders during sports activities were established 13 years ago in Japan. Since then, various studies on preventive measures against heat disorders have been done, yielding new knowledge about its prevention. It has been reported that the incidence of heat disorders is high in children and the elderly, and heat acclimatization and clothing are the factors involved in this disorder. We proposed to lower the WBGT (wet-bulb globe temperature) limit for warning (discontinuation of hard exercise) from “28°C or more” to “25°C or more” (corresponding to an ambient temperature of 28°C) for non-acclimatized persons, children, the elderly, and persons wearing clothes covering the entire body. We also indicated that heat disorders can occur due to unpredictable causes, because the mechanism is very complicated.

著者

宮下 浩二 浦辺 幸夫 小林 寛和 横江 清司 河村 守雄 猪田 邦雄

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.57, no.1, pp.141-150, 2008-02-01 (Released:2008-08-06)

参考文献数

37

被引用文献数

1

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The magnitude of mechanical stress at the shoulder and elbow appears to be directly correlated with the degree of maximum shoulder external rotation (MER) during throwing. Therefore, it is very important to prevent excessive MER to minimize the risk of throwing injuries. The purpose of this study was to investigate the relationships between MER during throwing and the kinematic parameters of throwing mechanics, shoulder muscle strength, and shoulder range of motion in high school baseball players. The subjects were 40 male high school baseball players with no elbow or shoulder joint problems. Three-dimensional analysis was performed to calculate the MER angle. Then, the shoulder and elbow angles at initial foot contact (IFC) were computed. ROM and muscle strength of shoulder joint were also measured in each subject. Multiple linear regression analysis was used to relate the MER angle to these factors. Significant correlations were observed between the MER angle and the external rotation (ER) angle (r=−0.51, p<0.001) at IFC, and the ER range of motion (r=0.84, p<0.01). The MER angle significantly correlated with shoulder internal rotation (IR) at IFC. This finding suggests that stress on the shoulder and elbow could be increased by the degree of shoulder IR angle at the moment of IFC. Further, excessive ER range of motion may also be a risk factor.

著者

今野 道勝 豊田 章

出版者

The Japanese Society of Physical Fitness and Sports Medicine

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.20, no.4, pp.173-180, 1971-12-01 (Released:2010-09-30)

参考文献数

10

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I. Aim and MethodThe cause of the stabbing pain in the side during exercise is not definitely known for the physiologist cannot be sure its appearance when he is prepared to study it. Therefore, in order to reveal the cause of this abdominal pain, the authors carried out first an investigation, then, on the basis of the result of the investigation, made attempt to induce the pain in the two series of experiments without any drug, balloon and so on.In the investigation, the questionnares were distributed to the 200 young male athletes to know about their experience of the abdominal pain during exercise and about the relations between the pain and weather, physical condition, kind of exercise and eating-exercise time interval.In the first series of experiments, eight healthy male students have not the history of an alimentary disorder were selected as the subject. Each subject came to the laboratory after fasting for eight and over hours, then they were loaded one of the two intensities of running on a treadmill in accordance with the procedure as showed in Tab. 1.In the second series of experiments, six of the eight subjects of the first series of experiments were selected as the subject for they complained the pain during running which carried out immediately after drinking or eating. Each subject was loaded walking on a treadmill and cycling on a bicycle ergometer in accordance with the procedure as showed in Tab.2. And this cycling requires about the same oxygen cost as the running at 240meters per minute.The test meal was consisted of baked egg (200g), fish ham (50g), raw cabbage (50g) and boild rice, and before the drinking or eating, each subject was advised to take water or boild rice as much as possible.When the subject complained the pain during exercise, the exercise was stopped about one minute later.II. Result and Conclusion.The pain was found 24 cases during running and only one case during cycling. In 72% of these 25 cases, a great deal of abdominal gas and excreta was found, and in 42% of 31 cases which were not found the pain, a great deal of abdominal gas and excreta was also found. Most of regions of the pain were middle and lower abdomen (80%), and specially in the experiments carried out relatively short time after eating, most of regions of the pain were left side abdomen (86%) .As for the time interval between the eating and exercise, the shorter the time interval, the higher rate of the pain was found.In every case, the pain stopped within seven minutes after exercise and any effect on the body was not found.From the result described above, it may conclude that the staple causes of the abdominal pain during exercise are (1) the abdominal gas or excreta is concentrated locally in the stomach or intestin by the movement of the body during exercise and distends the diaphragm or intestin, and (2) the stomach or intestin which is enlarged by the substances is rocked and tossed by the movement of the body during exercise and stimulates physically or chemically (local anaemia) to the mesentery or interior organs and so on.

著者

村上 晴香

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.65, no.1, pp.89, 2016 (Released:2016-01-24)

著者

福 典之 田中 雅嗣

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.36, 2011 (Released:2011-03-30)

著者

武田 紘平 田中 喜代次 麻見 直美 沼田 治 笹井 浩行 武政 徹

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.199-205, 2021-06-01 (Released:2021-05-13)

参考文献数

18

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Mitochondria activation factor (MAF) which is high-molecular weight polyphenol contained in black tea and oolong tea can increase the mitochondrial membrane potential. MAF supplementation to mice facilitates endurance running performance after 9-week endurance training and muscle hypertrophy induced by synergist ablation. In this study, we examined the effect of oral MAF supplementation on overall physical fitness (expressed as physical fitness age) in physically active middle-aged and older women. This study is a randomized double-blind placebo-controlled trial implemented between January and May 2019 at three fitness facilities in Ibaraki, Japan. Seventy middle-aged women aged 55 to 69 years were randomly assigned into placebo (n = 35) and MAF groups (n = 35). The placebo participants took cornstarch-containing capsules, and the MAF participants took MAF-containing capsules twice a day for 80 days consecutively. During the intake period, all participants were instructed to follow 30-min circuit training program at least twice a week. Physical fitness age was computed with eight physical fitness items assessing upper-extremity muscle strength, locomotion, and postural change. The physical fitness age decreased by 1.48 years (95% confidence interval [CI]: -2.66, -0.30) in the placebo group and 3.01 years (95% CI: -4.16, -1.86) in the MAF group. The reduction was greater in the MAF group, but did not reach statistical significance (p = 0.06). The combination of 80-day of MAF intake and circuit exercise showed beneficial results. However, our results did not indicate clear effects on physical fitness age because of low statistical power. Further studies are necessary to reveal the effects of MAF supplementation.

著者

中山 悌一

出版者

The Japanese Society of Physical Fitness and Sports Medicine

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.53, no.4, pp.443-453, 2004-08-01 (Released:2010-09-30)

参考文献数

39

被引用文献数

3 2

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本研究は, 1950年から2002年までの日本人プロ野球選手の身長と体重が, 戦後飛躍的に向上した一般人の体格と比較して如何に推移してきたか, さらに米大リーグ選手との体格の差は縮まりつつあるのかを明らかにする事を目的として遂行され以下の結果を得た.1.1950年の日本人プロ野球選手の平均身長は170.7cmであったが, 2002年には平均180.1cmまで高くなり53年間で9.4cm (5.5%) の成長を見せた.1950年の日本人プロ野球選手の平均体重は65.0kgであったが, 2002年には79.8kgとなり53年間で14.8kg (22.8%) の増加を認めた.さらに1950年の日本人プロ野球選手の平均BMIは22.3であったがその後徐々に大きくなり2002年には24.6となり, 日本のプロ野球選手ががっちりとした体格へと推移していることが明らかとなった.2.身長のポジション別推移では常に投手が一番高かった.この理由として投手は身長が高い方が投球に有利であるいうポジション的特異性に由来しているものと考えられる.体重のポジション別推移は, 1969年から現在まで捕手が一番重くなっている.この結果は捕手は移動距離が少なく, ポジション的役割としてホームベースを死守する役目を担っているために体重が重い方が有利である事に起因するためと推察される.3.一般人の体格は, 戦後急激に向上したことが数多く報告されているが, 日本人プロ野球選手の体格も同様に大きくなり, 身長は日本人一般男子 (24歳) より5.5%から8.6%の範囲で常に高く, 同様1に体重も日本人一般男子 (24歳) より15.9%から27.3%の範囲で常に重かった.このことより, 日本人プロ野球選手は, 同年齢の日本人一般男子より体格的に非常に優れた選手たちによって構成されていることが明らかとなった.日本人プロ野球選手と日本人一般男子 (24歳) の身長と体重の差は, 1950年代に急激に広がったが1960年以降はその差も小さくなる傾向にある.4.日本人プロ野球選手と米大リーグ選手の体格を比較してみると, 1950年代の身長差は11.4cmであったが, 2000年代の身長差は4.9cmとなった.同様に1950年代の体重差は17.7kgであったが, 2000年代の体重差は13.1kgまで縮まり, 日本人プロ野球選手と米大リーグ選手の体格の差は, 確実に縮まりつつあることが確認できた.

著者

濱田 有香 林 直亨

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.65, no.3, pp.287-295, 2016-06-01 (Released:2016-05-14)

参考文献数

49

被引用文献数

1

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Overweight or obesity becomes a worldwide public health issue; the global obesity pandemic. Strategies to effectively prevent overweight and obesity are needed. Slow eating, which involves chewing food slowly and thoroughly, can be an effective strategy to prevent overweight and obesity. Previous studies reported a relationship between rapid eating and overweight. Candidate factors inducing the relationship have been thought to be related to increases in appetite and energy intake through rapid eating, allowing the ingestion of a greater-than-optimal volume of food. While the counter effect of slow eating has been widely known, effects of eating speed on digestion, absorption, and metabolism has yet to be elucidated. If eating speed affects digestion, absorption, and metabolism, eating speed can be a factor explaining the relationship between eating speed and body composition. The present review is to summarize the effects of eating speed on digestion, absorption, and metabolism, consequently suggesting preferable effects of slowly eating on increasing energy expenditure after eating.

著者

牧迫 飛雄馬

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.65, no.1, pp.133, 2016 (Released:2016-01-24)

参考文献数

2

著者

堤 省吾 浦辺 幸夫 前田 慶明

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.3, pp.219-225, 2018-06-01 (Released:2018-05-16)

参考文献数

29

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The aim of this study was to evaluate the transition of the tensor fasciae latae (TFL) and the iliotibial band (ITB) hardness after repetitive hip abduction exercise (RE) and the effect of vibration stimulation immediately after RE. Nine healthy man performed the RE (20 reps×5 sets) and the TFL and the ITB hardness were measured before and after RE. Participants were performed RE by 2 conditions(i.e. with and without vibration stimulation after RE). The results showed that with no vibration condition, hardness of the TFL significantly increased immediately, 15 min, 30 min, and 24 hours and the ITB significantly increased immediately, and 24 hours after RE compared with before RE, respectively. With vibration condition, vibration after RE, both of the TFL and the ITB hardness significantly increased only immediately after compared with before RE. On the other hand, TFL and ITB hardness significantly decreased 15 min, 30 min, and 24 hours compared with immediately after RE. In addition, with vibration condition, TFL and ITB hardness significantly decreased 15 min, 30 min, 24 hours compared with no vibration condition, respectively. This study indicated that the ITB hardness might be increased with excessive activity of TFL, and the vibration stimulation immediately after exercise is effective for decreasing the hardness.

著者

高橋 正人

出版者

The Japanese Society of Physical Fitness and Sports Medicine

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.43, no.1, pp.66-74, 1994-02-01 (Released:2010-09-30)

参考文献数

12

被引用文献数

1 1

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I report a case of scalp hair loss and nail destruction as possible side effects of anabolic androgenic steroid (AAS) doping in a Japanese athlete. The patiet, a 27-year-old man, was an amateur bodybuilder who won the championship in a bodybuilding contest. However, he tested positive in a doping test for drostanolone and stanozolol, and was deprived of his championship.In Japan, positive results in doping tests are very rare. The patient suffered from loss of scalp hair and destruction of the nails before the contest. In addition, he presented with hoarseness and soft tumors of the lower extremities. Laboratory data showed hypotestos-onemia caused by AAS doping. However, a hCG test revealed that he still had positive of sex function capacity. Therefore the patients natural course was observed without medical treatment, and the symptoms were resolved within four months after the contest. This is considered to be the first case of nail destruction caused by AAS doping reported in the world.

著者

西薗 秀嗣 中川 功哉 須田 力 斎藤 勝政

出版者

The Japanese Society of Physical Fitness and Sports Medicine

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.33, no.1, pp.17-26, 1983-02-01 (Released:2010-09-30)

参考文献数

20

被引用文献数

5 6 4

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アーチェリーのシューティングについて, 日米のトップアーチャー2名並びに技術水準の異なる男子大学生アーチャー15名の上肢, 上肢帯, 体幹筋の筋電図記録, 動作分析を行い, 以下の知見を得た。1) 初心者及び経験5年程度の中級者では, セットアップ, ドローの初期から上肢の放電が著しく, フルドローに入って左右側の筋緊張が不安定な状態でリリースがなされる。これに対してトップアーチャーでは初期から上肢帯, 体幹筋の活動が大きく, フルドローでは左右側で均等な強い筋活動がみられた。さらに, フォロースルーで一定時間, 筋活動が安定して持続し, 合理的な筋の作用がなされていた。2) トップアーチャー2名において, リリースに先行して両側の三角筋肩峰部で筋放電休止期Silent Period (S.P.) が認められ, さらに1名で押し手 (左) 僧帽筋横部でも認められた。3) 大学生アーチャー12名について, 経験年数と成績から上級者, 中級者, 初級者に分け, 三角筋でのS.P.の出現率, 潜時, リリース反応時間について検討した結果, 初級者ではS.P.の出現は2名に認められたが出現率は低く, リリース反応時問は190~230msecと長く, かつ分散している。上級者では全員S.P.の出現があり, 出現率は70~100%と高く, S.P.潜時及びリリース反応時間の平均値はそれぞれ, 115msec, 175msecとなり, しかもばらつきが少ない。4) 引き手 (右) 三角筋のS.P.の出現と同側僧帽筋の活動増強の時期が, 特に上級者群でほぼ一致した。この両筋は神経支配が異なり, リリース動作での拮抗筋と考えられず, リリース動作での一連の主働筋と考えられる。これらのことから, アーチェリーのシューティングという複雑な動作で出現したS.P.は, 長期にわたるトレーニングによる巧緻性獲得過程にみる一つの合理的な神経筋機構であると考えられる。

著者

石井 香織 井上 茂 大谷 由美子 小田切 優子 高宮 朋子 下光 輝一

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.58, no.5, pp.507-516, 2009-10-01 (Released:2009-11-11)

参考文献数

19

被引用文献数

6 12

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Background: Perceived benefits and barriers to exercise are important correlates of exercise participation. Purpose: To develop a short version of the perceived benefits and barriers to exercise scale and to examine its validity and reliability. Methods: A population-based cross-sectional study of 865 participants (age: 20-69 years old, men: 46.5%) was conducted in four cities in Japan (Koganei, Tshukuba, Shizuoka, Kagoshima). Perceived benefits and barriers scale including five benefit subscales (physical benefit, psychological benefit, social benefit, weight management, self-improvement) with 10 items, five barrier subscales (discomfort, lack of motivation, lack of time, lack of social support, poor physical environment) with 10 items and stage of change for exercise behavior were assessed by self-administered questionnaire. Results: Confirmatory factor analyses to examine the construct validity revealed acceptable fit indices (benefit scale: GFI=.980, AGFI=.951, RMSEA=.058, AIC=151.669, barrier scale: GFI=.973, AGFI=.949, RMSEA=.060, AIC=166.084). Seven of ten subscales indicated significant linear associations with stage of change for exercise behavior, criterion-related validity was revealed. The reliability of the scale was found to be good as internal consistency and inter-rater reliability. Conclusion: The short version of the perceived benefits and barriers scale developed in this study demonstrated acceptable construct validity, criterion-related validity, internal consistency and inter-rater reliability.

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.61, no.6, pp.671-684, 2012 (Released:2012-12-28)

著者

笠岡 宜代 江崎 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.54, no.1, pp.28, 2005 (Released:2006-12-01)