2024/05/23 更新

写真b

クロサワ サヤカ
黒澤 彩
KUROSAWA Sayaka
*大学が定期的に情報更新している項目(その他は、researchmapの登録情報を転載)
所属*
スポーツウエルネス学部 スポーツウエルネス学科
職名*
助教
学位
博士(スポーツ科学) ( 早稲田大学 )
学内職務経歴*
  • 2023年4月 - 現在 
    スポーツウエルネス学部   スポーツウエルネス学科   助教
 

経歴

  • 2020年11月 - 2023年3月 
    早稲田大学   総合研究機構 アクティヴ・エイジング研究所   研究助手

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  • 2020年6月 - 2020年11月 
    早稲田大学   スポーツ科学研究センター   研究助手

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論文

  • Differences in Accelerometer-Measured Physical Activity and Sedentary Behavior Between Middle-Aged Men and Women in Japan: A Compositional Data Analysis. 国際誌

    Shiho Amagasa, Shigeru Inoue, Ai Shibata, Kaori Ishii, Sayaka Kurosawa, Neville Owen, Koichiro Oka

    Journal of physical activity & health19 ( 7 ) 500 - 508   2022年7月1日

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    BACKGROUND: Differences in accelerometer-measured sedentary behavior and different physical activity (PA) intensities between men and women have been poorly described. The authors examined gender differences in time-use activity composition and total volume of PA. METHODS: A cross-sectional mail survey was conducted from 2013 to 2015 with a randomized sample of 6000 middle-aged (40-64 y) community-dwelling Japanese adults living in urban and regional cities. Participants wore Active style Pro HJA-350IT on their waist for 7 consecutive days. Gender differences in activity time use was examined using compositional data analysis to control for time spent in all activity measures. RESULTS: In total, 757 participants (303 men, 52.3 [7.1] y) with valid data were included in the analysis. Women spent on average 12.6% less time in sedentary behavior and 23.4% more time in light-intensity PA than men, whereas no significant difference was found for moderate to vigorous PA. Women accumulated a significantly greater volume of PA than men (17.8 vs 15.0 metabolic equivalent of task h/d). CONCLUSIONS: Japanese middle-aged women showed higher levels of PA than men because they spent more time in light-intensity PA. Given the health benefits of light-intensity PA, evaluating only moderate to vigorous PA may lead to an underestimation of women's participation in PA.

    DOI: 10.1123/jpah.2022-0098

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  • Determinants of Resting Oxidative Stress in Middle-Aged and Elderly Men and Women: WASEDA'S Health Study. 国際誌

    Takuji Kawamura, Kumpei Tanisawa, Ryoko Kawakami, Chiyoko Usui, Tomoko Ito, Hiroki Tabata, Nobuhiro Nakamura, Sayaka Kurosawa, Wonjun Choi, Sihui Ma, Zsolt Radak, Susumu S Sawada, Katsuhiko Suzuki, Kaori Ishii, Shizuo Sakamoto, Koichiro Oka, Mitsuru Higuchi, Isao Muraoka

    Oxidative medicine and cellular longevity2021   5566880 - 5566880   2021年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Previous studies have not investigated the determinants of resting oxidative stress, including physical fitness, as it relates to redox regulation. The present study therefore was aimed at identifying lifestyle and biological factors that determine resting oxidative stress, including objectively measured physical fitness. In 873 middle-aged and elderly men and women, age and anthropometric parameters, lifestyle-related parameters, medication and supplementation status, physical fitness, biochemical parameters, and nutritional intake status, as well as three plasma oxidative stress markers: protein carbonyl (PC), F2-isoprostane (F2-IsoP), and thiobarbituric acid reactive substances (TBARS), were surveyed and measured. The determinants of PC, F2-IsoP, and TBARS in all participants were investigated using stepwise multiple regression analysis. In PC, age (β = -0.11, P = 0.002), leg extension power (β = -0.12, P = 0.008), BMI (β = 0.12, P = 0.004), and HDL-C (β = 0.08, P = 0.040) were included in the regression model (adjusted R 2 = 0.018). In the F2-IsoP, smoking status (β = 0.07, P = 0.060), BMI (β = 0.07, P = 0.054), and HbA1c (β = -0.06, P = 0.089) were included in the regression model (adjusted R 2 = 0.006). In TBARS, glucose (β = 0.18, P < 0.001), CRF (β = 0.16, P < 0.001), age (β = 0.15, P < 0.001), TG (β = 0.11, P = 0.001), antioxidant supplementation (β = 0.10, P = 0.002), and HbA1c (β = -0.13, P = 0.004) were included in the regression model (adjusted R 2 = 0.071). In conclusion, the present study showed that age, anthropometric index, lifestyle-related parameters, medication and supplementation status, objectively measured physical fitness, biochemical parameters, and nutritional intake status explain less than 10% of oxidative stress at rest.

    DOI: 10.1155/2021/5566880

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  • Identifying typologies of diurnal patterns in desk-based workers' sedentary time. 国際誌

    Sayaka Kurosawa, Ai Shibata, Kaori Ishii, Mohammad Javad Koohsari, Koichiro Oka

    PloS one16 ( 4 ) e0248304   2021年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    The purpose of this study was to identify typologies of diurnal sedentary behavior patterns and sociodemographic characteristics of desk-based workers. The sedentary time of 229 desk-based workers was measured using accelerometer devices. The within individual diurnal variations in sedentary time was calculated for both workdays and non-workdays. Diurnal variations in sedentary time during each time period (morning, afternoon, and evening) was calculated as the percentage of sedentary time during each time period divided by the percentage of the total sedentary time. A hierarchical cluster analysis (Ward's method) was used to identify the optimal number of clusters. To refine the initial clusters, a non-hierarchical cluster analysis (k-means method) was performed. Four clusters were identified: stable sedentary cluster (46.7%), off-morning break cluster (26.6%), off-afternoon break cluster (8.3%), and evening sedentary cluster (18.3%). The stable sedentary cluster had the lowest variations in sedentary time throughout the day and the highest amount of total sedentary time. Participants in the off-morning and off-afternoon break clusters had nearly the same sedentary patterns but took short-term breaks during non-workday mornings or afternoons. The evening sedentary cluster had a completely different pattern, with a longer sedentary time during the evening both on workdays and non-workdays. Sociodemographic attributes such as sex, household income, educational attainment, employment status, sleep duration, and residential area, differed significantly between groups. Initiatives to address desk-based workers' sedentary behavior need to focus not only on the workplace but also on the appropriate timing for reducing excessive sedentary time in non-work contexts depending on the characteristics and diurnal patterns of target subgroups.

    DOI: 10.1371/journal.pone.0248304

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  • Built environment correlates of objectively-measured sedentary behaviours in densely-populated areas. 国際誌

    Mohammad Javad Koohsari, Ai Shibata, Kaori Ishii, Sayaka Kurosawa, Akitomo Yasunaga, Tomoya Hanibuchi, Tomoki Nakaya, Suzanne Mavoa, Gavin R McCormack, Koichiro Oka

    Health & place66   102447 - 102447   2020年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Few studies examine associations between objectively-calculated neighbourhood built environment attributes and objectively-assessed sedentary behaviour in different geographical locations, especially in highly-populated environments. Additionally, no study, to our knowledge, has investigated associations between objective measures of neighbourhood built environment attributes and objectively-assessed sedentary behaviours in middle-aged adults, despite the fact that this is a critical stage of life when age-related functional decline begins. We examined the associations between neighbourhood built environment attributes with the total, and patterns of, objectively-assessed sedentary behaviours in a densely-populated area in Asia. Data from 866 adults (ages 40 to 64) living in Japan were included. Four classifications of sedentary behaviours, including daily total sedentary time, duration and number of long (≥30 min) sedentary bouts and breaks per sedentary hour, were estimated using hip-worn accelerometers. Individual (population density, availability of destinations, number of intersections, and distance to the nearest park) and composite (walkability and Walk Score®) neighbourhood built environment indices were calculated using geographic information systems. Covariate-adjusted multilevel linear mixed effects models were used to estimate the associations between the neighbourhood built environment attributes and sedentary behaviours. Population density and availability of destinations were positively associated with sedentary behaviours; however, the number of intersections was negatively associated with sedentary behaviours. No associations were observed between the distance to the nearest park and sedentary behaviours. There were positive associations between walkability and total sedentary time, and duration and the number of long sedentary bouts. Walk Score® was positively associated with total sedentary time and the number of long sedentary bouts. These findings suggest that urban design attributes supportive of walking (except for the number of intersections) may encourage sedentary behaviour among middle-aged adults living in densely-populated environments.

    DOI: 10.1016/j.healthplace.2020.102447

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  • Dog ownership and adults' objectively-assessed sedentary behaviour and physical activity. 国際誌

    Mohammad Javad Koohsari, Ai Shibata, Kaori Ishii, Sayaka Kurosawa, Akitomo Yasunaga, Tomoya Hanibuchi, Tomoki Nakaya, Gavin R McCormack, Koichiro Oka

    Scientific reports10 ( 1 ) 17487 - 17487   2020年10月15日

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Evidence suggests a positive effect of dog ownership on physical activity. However, most previous studies used self-reported physical activity measures. Additionally, it is unknown whether owning a dog is associated with adults' sedentary behaviour, an emerging health risk factor. In this study, physical activity and sedentary behaviour were objectively collected between 2013 and 2015 from 693 residents (aged 40-64 years) living in Japan using accelerometer devices. Multivariable linear regression models were used, adjusted for several covariates. The means of total sedentary time and the number of long (≥ 30 min) sedentary bouts were 26.29 min/day (95% CI - 47.85, - 4.72) and 0.41 times/day (95% CI - 0.72, - 0.10) lower for those who owned a dog compared to those not owning a dog, respectively. Compared with non-owners, dog-owners had significantly higher means of the number of sedentary breaks (95% CI 0.14, 1.22), and light-intensity physical activity (95% CI 1.31, 37.51). No significant differences in duration of long (≥ 30 min) sedentary bouts, moderate, vigorous, and moderate-to-vigorous-intensity physical activity were observed between dog-owners and non-owners. A novel finding of this study is that owning a dog was associated with several types of adults' sedentary behaviours but not medium-to-high-intensity physical activities. These findings provide new insights for dog-based behavioural health interventions on the benefits of dog ownership for reducing sedentary behaviour.

    DOI: 10.1038/s41598-020-74365-6

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  • Accelerometer-Measured Diurnal Patterns of Sedentary Behavior among Japanese Workers: A Descriptive Epidemiological Study. 国際誌

    Sayaka Kurosawa, Ai Shibata, Kaori Ishii, Mohammad Javad Koohsari, Koichiro Oka

    International journal of environmental research and public health17 ( 11 )   2020年5月27日

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Increased sedentary behavior (SB) can adversely affect health. Understanding time-dependent patterns of SB and its correlates can inform targeted approaches for prevention. This study examined diurnal patterns of SB and its sociodemographic associations among Japanese workers. The proportion of sedentary time (% of wear time) and the number of breaks in SB (times/sedentary hour) of 405 workers (aged 40-64 years) were assessed using an accelerometer. SB patterns and sociodemographic associations between each time period (morning, afternoon, evening) on workdays and nonworkdays were examined in a series of multivariate regression analyses, adjusting for other sociodemographic associations. On both workdays and nonworkdays, the proportion of sedentary time was lowest in the morning and increased towards evening (b = 12.95, 95% CI: 11.28 to 14.62; b= 14.31, 95% CI: 12.73 to 15.88), with opposite trend for breaks. Being male was consistently correlated with SB. Other sociodemographic correlates differed depending on time-of-day and day-of-the-week. For instance, desk-based workstyles and urban residential area were associated with SB during workday mornings and afternoons, being single was related to mornings and evenings, workdays and nonworkdays. Initiatives to address SB should focus not only on work-related but time-of-day contexts, especially for at-risk subgroups during each period.

    DOI: 10.3390/ijerph17113814

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MISC

  • 「健康スポーツ医と健康増進施設の連携」 健康増進施設認定制度の概要

    黒澤 彩

    日本臨床運動療法学会学術集会プログラム・抄録集41回   35 - 35   2022年9月

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    記述言語:日本語   出版者・発行元:(NPO)日本臨床運動療法学会  

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  • 身体活動ガイドライン改定の方向性と内容 認知度調査と全身持久力以外の体力の基準及び新たな分野の基準作成レビュー班の取り組み

    澤田 亨, 原田 和弘, 門間 陽樹, 川上 諒子, 本田 貴紀, 松下 宗洋, 武田 典子, 黒澤 彩, 郡山 さくら, Sloan Robert A.

    体力科学71 ( 1 ) 18 - 18   2022年2月

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    記述言語:日本語   出版者・発行元:(一社)日本体力医学会  

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  • 標準的な運動プログラムの効果検証とその普及

    黒澤 彩, 澤田 亨

    日本臨床運動療法学会学術集会プログラム・抄録集40回   40 - 40   2021年9月

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    記述言語:日本語   出版者・発行元:(NPO)日本臨床運動療法学会  

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  • 労働者における一日の座位時間の累算方法(How do workers accumulate sedentary behavior in time period of day?)

    Kurosawa Sayaka, Shibata Ai, Ishii Kaori, Oka Koichiro

    The Journal of Physical Fitness and Sports Medicine8 ( 6 ) 374 - 374   2019年11月

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    記述言語:英語   出版者・発行元:(一社)日本体力医学会  

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  • 時間運動学に基づくうつ予防のために最適な座位行動・身体活動パターンの解明

    黒澤彩, 柴田愛, 石井香織, 岡浩一朗

    若手研究者のための健康科学研究助成成果報告書 ( 34 )   2019年

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  • 成人における座位行動および身体活動の日周パターン 系統的考察(Diurnal patterns of sedentary behavior and physical activity in adults: A systematic review)

    Kurosawa Sayaka, Shibata Ai, Ishii Kaori, Oka Koichiro

    The Journal of Physical Fitness and Sports Medicine7 ( 6 ) 445 - 445   2018年11月

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    記述言語:英語   出版者・発行元:(一社)日本体力医学会  

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共同研究・競争的資金等の研究

  • 運動施設における運動指導の身体活動促進効果を規定する要因の解明

    日本学術振興会  科学研究費助成事業 

    黒澤 彩

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    2021年8月 - 2023年3月

    課題番号:21K21233

    配分額:2730000円 ( 直接経費:2100000円 、 間接経費:630000円 )

    運動施設での運動指導は、身体活動量の増加につながることが示されている。しかしながら、身体活動の総量に対する運動施設における運動指導の身体活動量増加効果の程度は個人差が大きく、これらの効果の違いが参加者のどのような特徴によって規定されているのかはほとんど検討されていない。また、先行研究においては、健康便益をもたらすレベルの身体活動量の実施には心理的・社会的・環境的特性が関連していることが明らかとなっているものの、どの特性が運動指導による身体活動促進効果にどのように影響しているかは明らかになっていない。そこで、本研究の目的は、運動施設における運動指導の身体活動促進効果を規定する心理的・社会的・環境的特性とその影響度を明らかにすることとした。
    2021年度は、まずは、対象者の特性によって身体活動の現状がどのように異なるかを把握するために、客観的に評価した身体活動の記述疫学的検討を行った。性別や社会経済学的特性、居住地域など対象者の特性によって、身体活動の実態(週内変動、座位行動との組み合わせ等)が異なることを明らかにした。
    2021年度は、さらに、運動施設における運動指導を行った際に、施設内外の活動を含めた身体活動の促進効果とその関連要因について検証することを予定していたが、新型コロナウィルスの影響によって、テレワークやリモートワーク等、本研究の対象となる成人の生活・環境が大きく変化するとともに、運動施設の利用控えが起こっていることから、調査・測定が実施できない状況が生じた。そのため、当該調査・測定は2022年度に行えるよう、各所調整を行った。

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