著者

田中 千晶 岡田 真平 高倉 実 橋本 圭司 目澤 秀俊 安藤 大輔 田中 茂穂 Anthony D Okely

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.4, pp.327-333, 2020-08-01 (Released:2020-07-15)

参考文献数

24

被引用文献数

4

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This study examined the relationship between meeting the World Health Organization’s (WHO) 24-Hour Movement Guidelines for the Early Years and motor skills and cognitive function in preschool children. Participants were 4-year-old boys and girls in urban and rural areas (n=69). Physical activity was measured using a triaxial accelerometer (ActiGraph GT3X). Screen time and sleep duration were assessed via self-report by guardians. Meeting the 24-h movement guidelines was defined as: 10 to 13 h/night and nap of sleep, ≤1 h/day of sedentary screen time, and at least 180 min/day more than 1.5 METs. Motor skills were evaluated by the Ages & Stages Questionnaires, Third Edition (ASQ-3). Executive functions (shifting, visual-spatial working memory and inhibition) were evaluated by the Early Years Toolbox (Japanese translation). The prevalence of children meeting all three recommendations was 7.2% and 7.2% met none of the three recommendations. Children meeting physical activity recommendation had a better inhibition score compared to children meeting none of the recommendation (p=0.005). While, children not meeting the sleep recommendation had a better inhibition score compared to children meeting of the recommendation (p=0.042). In conclusion, meeting the physical activity or sleep recommendations were positively or negatively associated with the inhibition score. On the other hand, meeting none of the sedentary behaviour and the 3 recommendations was not associated with motor skills or cognitive function.

著者

土橋 祥平 小山 康文 安藤 大輔 小山 勝弘

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.2, pp.125-132, 2019-04-01 (Released:2019-03-16)

参考文献数

28

被引用文献数

1

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Recently, a standing desk is being installed as a behavior change strategy to reduce sitting time in the workplace. However, the standing posture has been suggested to decrease forehead oxygenated hemoglobin (oxy-Hb), which might impair task performances. Therefore, we examined whether prolonged standing impairs speed and accuracy of computer subtraction task associated with a decrease in forehead oxy-Hb. Nine healthy young males completed 4 × 15-min computer tasks under two conditions, i.e., sitting and standing. In the computer tasks, all subjects were required to subtract a two-digit number from a four digit number written on the paper and to input the answer to the answer colomn on the computer. Task performances were evaluated as the number of achievements and accuracy rate every 15 minutes. Moreover, oxy-Hb and deoxygenated-hemoglobin (deoxy-Hb) in the site of left forehead area and lower limb were monitored throughout the experimental period by near-infrared spectroscopy. Forehead oxy-Hb was significantly associated with the number of achievements during computer tasks (p < 0.001). In addition, forehead oxy-Hb and task performances did not differ between sitting and standing. The number of achievements of subtraction task under standing condition was significantly decreased as time proceeds. Our results demonstrate that prolonged standing might impair computer subtraction task performances irrespective of the change in forehead oxy-Hb.

著者

小川 由希子 安藤 大輔 須藤 祐司 小池 淳一

出版者

公益社団法人 日本金属学会

雑誌

日本金属学会誌 (ISSN:00214876)

巻号頁・発行日

vol.80, no.3, pp.171-175, 2016 (Released:2016-02-25)

参考文献数

25

被引用文献数

4 9

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Mg-20.5 at% Sc alloy with hcp (α)+bcc (β) two-phase alloy was investigated to understand the effects of aging treatment at 200℃ on microstructure, hardness and tensile properties. The Mg-Sc alloy ingot was prepared by induction melting in Ar atmosphere, and then hot rolled at 600℃ followed by cold rolling into a sheet. The rolled specimens were annealed at 600℃ to obtain α+β two-phase microstructure. Then, the annealed specimens were aged at 200℃ for various time. Vickers hardness of the α+β two-phase alloy drastically increased after a certain incubation time and then reached maximum hardness of 142.8 Hv. The incubation time of the Mg-20.5 at% Sc alloy with the α+β two-phase was longer than that of the same alloy with a β single-phase. Ultimate tensile strength (UTS) and elongation of the as-annealed specimen were 280 MPa and 28.2%, respectively. Meanwhile, the specimen aged at 200℃ for 14.4 ks showed a UTS of 357 MPa and an elongation of over 12%. The specimen aged for 18 ks showed a higher UTS of 465 MPa while keeping a better elongation of 6.9%. It was found that the age hardening of the Mg-Sc alloys were attributed to the precipitation of very fine α phase in β phase.

著者

笠井 茂輝 小鳥居 快人 佐野 歩夢 中澤 岳斗 三原 良心 安藤 大輔

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.72, no.6, pp.387-398, 2023-12-01 (Released:2023-11-14)

参考文献数

34

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Exercise performance may be improved by listening to high-tempo and motivational music prior to exercise. However, the effects of the combination of “tempo” and “motivational factors other than tempo” of music on exercise performance have not been examined in detail. We examined whether listening to music before exercise affects repetitive sprint performance and psychological responses in healthy young men. Twenty-one healthy men performed two consecutive sets of 20-second sprint cycling with a 120-second rest period between sets. Five types of music were used during the warm-up and rest periods: no music (Con), high-tempo music that subjects judged to be motivating (MH, 130~140 bpm), high-tempo music that subjects judged to be unmotivating (UMH, 130~140 bpm), low-tempo music that subjects judged to be motivating (ML, 70~80 bpm), and low-tempo music that judged to be unmotivating (UML, 70~80 bpm). Motivation, pleasure-displeasure and arousal-sleepiness, and rate of perceived exertion were investigated using a questionnaire. The maximum power per body weight during sprint cycling was significantly higher in ML than in Con, and MH tended to be higher than in Con. Motivation increased significantly from “After Warm-up” to “After Recovery” for MH and ML, but did not change significantly for Con, UMH, and UML. These results suggest that listening to motivational music, regardless of tempo, improves the maximum power of sprint cycling.

著者

山北 満哉 安藤 大輔 佐藤 美理 秋山 有佳 山口 香 山縣 然太朗

出版者

日本運動疫学会

雑誌

運動疫学研究 (ISSN:13475827)

巻号頁・発行日

pp.2158, (Released:2023-03-31)

著者

山北 満哉 安藤 大輔 佐藤 美理 秋山 有佳 山縣 然太朗

出版者

日本運動疫学会

雑誌

運動疫学研究 (ISSN:13475827)

巻号頁・発行日

pp.2159, (Released:2023-03-31)

著者

山北 満哉 安藤 大輔 佐藤 美理 秋山 有佳 鈴木 孝太 山縣 然太朗

出版者

日本運動疫学会

雑誌

運動疫学研究 (ISSN:13475827)

巻号頁・発行日

pp.2204, (Released:2023-03-31)

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目的:山梨県甲州市において実施した骨強度調査の取組について,PAIREM(Plan: 計画, Adaptation: 採用, Implementation: 実施, Reach: 到達, Effectiveness: 効果, Maintenance: 維持)の枠組み(6局面)に基づいて報告することを目的とした。 方法:市内の小中学校において実施した2011~2020年の取組を対象とし,PAIREMモデルの6局面について評価した。 結果:計画:骨強度調査は別調査の追加調査として計画され,市内の希望校を対象として実施されたが,骨強度調査の具体的な到達目標は設定していなかった。採用:10年間で中学校による協力の申し出(採用)がなくなったものの,小学校では61.5%から84.6%に増加した。実施:骨強度調査の結果を活用した健康教育が展開されるとともに,学校保健委員会(5校,計7回/10年)及び骨の研究部会(5回/10年)において骨強度に関する情報提供が行われた。到達:対象とした7,362人のうち,7,200人(97.8%)の高い到達度で骨強度を測定できた。全対象児童(100%)に対して、骨強度に関する情報提供が行われた。効果:具体的な到達目標が設定されていなかったため,骨強度に対する骨強度調査の効果(目標達成度)を評価することができなかった。継続:参加校における10年間の平均継続年数は8.36(標準偏差2.2)年であったが,個人に対する取組の長期的な継続効果については検討できなかった。 結論:学校における骨強度調査の取組により高い到達度で健康教育を実施できる可能性が示された。今後は健康教育の詳細を把握するとともに,骨強度に関する具体的な数値目標を設定し,その達成を目指した取組を実施することが課題である。

著者

田中 千晶 岡田 真平 高倉 実 橋本 圭司 目澤 秀俊 安藤 大輔 田中 茂穂 Okely Anthony D

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.4, pp.327-333, 2020

被引用文献数

4

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<p>This study examined the relationship between meeting the World Health Organization's (WHO) 24-Hour Movement Guidelines for the Early Years and motor skills and cognitive function in preschool children. Participants were 4-year-old boys and girls in urban and rural areas (n=69). Physical activity was measured using a triaxial accelerometer (ActiGraph GT3X). Screen time and sleep duration were assessed via self-report by guardians. Meeting the 24-h movement guidelines was defined as: 10 to 13 h/night and nap of sleep, ≤1 h/day of sedentary screen time, and at least 180 min/day more than 1.5 METs. Motor skills were evaluated by the Ages & Stages Questionnaires, Third Edition (ASQ-3). Executive functions (shifting, visual-spatial working memory and inhibition) were evaluated by the Early Years Toolbox (Japanese translation). The prevalence of children meeting all three recommendations was 7.2% and 7.2% met none of the three recommendations. Children meeting physical activity recommendation had a better inhibition score compared to children meeting none of the recommendation (p=0.005). While, children not meeting the sleep recommendation had a better inhibition score compared to children meeting of the recommendation (p=0.042). In conclusion, meeting the physical activity or sleep recommendations were positively or negatively associated with the inhibition score. On the other hand, meeting none of the sedentary behaviour and the 3 recommendations was not associated with motor skills or cognitive function.</p>

著者

鈴木 孝太 山縣 然太朗 田中 太一郎 安藤 大輔

出版者

山梨大学

雑誌

基盤研究(C)

巻号頁・発行日

2008

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近年、妊娠中の喫煙が、出生した子どもの肥満と関連していることが示唆され、さらに、この関連には性差があることも推測されていたが、実際に検討されたことはほとんどなかった。本研究では、日本の一地域において、約20年にわたって妊娠中から子どもの発育を追跡してきたデータを用いて解析を行った結果、妊娠中の喫煙が小学生の肥満と関連していることを明らかにした。さらに、これらの関連には性差が存在することを示した。