Researchers Database

Maruya Sachiko

FacultyFaculty Division of Human Life and Environmental Sciences Research Group of Food Science and Nutrition
PositionAssistant Professor
Last Updated :2023/08/02


Profile and Settings

  • Name (Japanese)

  • Name (Kana)


Research Interests

  • 行動変容
  • 生活習慣病
  • 減塩
  • 栄養疫学

Research Areas

  • Life sciences, Nutrition and health science
  • Humanities & social sciences, Home economics, lifestyle science
  • Life sciences, Hygiene and public health (non-laboratory)

Research Experience

  • Apr. 2021, 9999, 奈良女子大学研究院, 生活環境科学系 食物栄養学領域, 助教
  • Apr. 2017, Mar. 2020, Nara Women's University, 生活環境学部 食物栄養学科, 特任助教
  • Apr. 2015, Mar. 2017, Kyoto Koka Women's University, 健康科学部 健康栄養学科, 実験・実習助手

Teaching Experience

  • 99 Apr. 2021


Published Papers

  • Refereed, 家政学雑誌(奈良), 奈良女子大学家政学会, 食事調査に用いる料理データベース開発を目的とした男女・年代別の主食の飯および副菜の野菜類のポーションサイズの検討, 高地 リベカ; 本多 泉美; 石井 有里; 丸谷 幸子; 石原 淳子; 高田 和子, Mar. 2021, 67, 1-2, 43, 49
  • Refereed, Nutrients, Short-Term Effects of Salt Restriction via Home Dishes Do Not Persist in the Long Term: A Randomized Control Study., Sachiko Maruya; Ribeka Takachi; Maki Kanda; Misako Nakadate; Junko Ishihara, Salt intake reduction is crucial to prevent non-communicable diseases (NCDs) globally. This study aimed to investigate the short- and long-term effects of monitoring salt concentration in homemade dishes on reducing salt intake in a Japanese population. A double-blind randomized controlled trial using a 2 × 2 factorial design with two interventions was conducted in 195 participants; they were assigned to both interventions for a group monitoring salt concentration in soups (control: no monitoring) and a group using low-sodium seasoning (control: regular seasoning). We evaluated 24-hour urinary sodium excretions at baseline and after a three-month intervention for the changes as major outcomes, at six- and twelve-months after baseline as long-term follow-up surveys. Urinary sodium excretion decreased in both intervention and control groups after the intervention. However, differences in the change for both monitoring and low-sodium seasoning interventions were statistically non-significant (p = 0.29 and 0.52, respectively). Urinary sodium excretion returned to the baseline level after twelve-months for all groups. Monitoring of salt concentration is ineffective in reducing salt intake for short- and long-term among the people studied in this cohort., 03 Oct. 2020, 12, 10, Scientific journal, True, 10.3390/nu12103034
  • Refereed, Open Access Journal of Public Health, The Effect of Educational Background Music on Reducing Salt Intake at a University Canteen, Sachikio Maruya; Yuri Sato; Haruka Nakai; Ribeka Takachi, Sep. 2017, 2, 4, 28
  • 日本病態栄養学会誌, (一社)日本病態栄養学会, 微量栄養補助飲料摂取の血管内皮機能への影響に関する介入研究, 丸山 広達; 江口 依里; 長尾 匡則; 西出 緑; 丸山 皆子; 丸谷 幸子; 高野 裕慎; 吉岡 杏奈; 章 文; 李 媛英; 崔 仁哲; 大平 哲也; 磯 博康, Nov. 2010, 13, 5, 126, 126
  • 脂質栄養学, 日本脂質栄養学会, マウスのアディポネクチン・シグナルに及ぼす魚油の摂取の影響, 樋口 智之; 丸谷 幸子; 益谷 文子; 白井 展也; 西塔 正孝; 鈴木 平光, Aug. 2008, 17, 2, 127, 127
  • Journal of Electrophoresis, 日本電気泳動学会, アガロースゲル支持体に最適な銀染色法の開発(A silver staining procedure for proteins in agarose gels), 横溝 佳代; 丸谷 幸子; 平塚 信夫; 芝 紀代子, 既報の独自のアガロースゲルを用いて低タンパク質濃度を視覚化するためにKerenyiとGallyasの銀染色法の修正を行った。背景染色を減らし、人為的な斑形成を回避するため、染色試薬と固定液(第一、二固定)の組成を含む多数の要因について検討した。染色試薬混合液中の2.5% Na2CO3、0.1% AgNO3、0.1% NH4NO3、0.75% tungtosilicic acid、0.14%ホルムアルデヒドが重要であり、5% ZnSO4を第二固定液添加により一定の低背景染色化をおよび人為的斑数の有意な減少がもたらされることが判明した。銀染色本法はCoomassie brilliant blueよりも約100倍感度が良好で、ウシ血清アルブミンの検出限界はバンドにあたり約1.46ngである。, Mar. 2006, 50, 1, 1, 5
  • 生物物理化学, 日本電気泳動学会, アガロースゲル支持体に最適な銀染色法の開発とその臨床応用, 丸谷 幸子; 平塚 信夫; 芝 紀代子; 坂爪 実; 下条 文武; 大原 佳代子; 波多野 吉治; 井田 隆; 横溝 佳代, Oct. 2005, 49, 補冊, 19, 19
  • The British journal of nutrition, Dietary sodium sources according to four 3-day weighed food records and their association with multiple 24-hour urinary excretions among middle-aged and elderly Japanese participants in rural areas., Fuyuka Ogawa; Ribeka Takachi; Junko Ishihara; Marina Yamagishi; Sachiko Maruya; Yuri Ishii; Kumiko Kito; Kazutoshi Nakamura; Junta Tanaka; Taiki Yamaji; Hiroyasu Iso; Motoki Iwasaki; Shoichiro Tsugane; Norie Sawada, Reducing sodium (Na) intake is an urgent global challenge, especially in East Asia and high-income Asia-Pacific regions. However, the sources of Na and their effects on urinary Na excretion have not been fully studied. We sought to clarify these sources and their association with urinary Na excretion. We examined four 3-day weighed food records and five 24-h urinary collections from each of 253 participants in Japan, aged 35-80 years, between 2012 and 2013. We compared the levels of Na according to four categories: foods contributing to discretionary or nondiscretionary Na intake, the situation in which dishes were cooked and consumed, food groups and types of cuisine. We also conducted regression analysis in which 24-h urinary Na excretion was a dependent variable and the amounts of food intake in the four categories were independent variables. Levels of Na were the highest in discretionary intake (60.6%) and in home-prepared dishes (84.0%). Of the food groups, miso soup showed the highest percentage contribution to Na intake (13.3%) after seasonings such as soy sauce. In the regression analysis, the standardised coefficient for foods of nondiscretionary Na sources was larger than that for discretionary sources, whereas that for home-prepared dishes was consistent with the levels of Na in those foods. Pickled products, followed by fresh fish and shellfish, miso soup and rice, were associated with high urinary Na excretion. Thus, discretionary foods (such as miso soup) contribute the most to Na consumption, although nondiscretionary intake (such as pickled vegetables) may influence urinary Na excretion., 18 Aug. 2022, 1, 23, Scientific journal, True, 10.1017/S0007114522002653
  • Nutrients, Validity of the Food Frequency Questionnaire-Estimated Intakes of Sodium, Potassium, and Sodium-to-Potassium Ratio for Screening at a Point of Absolute Intake among Middle-Aged and Older Japanese Adults., Tomoka Matsuno; Ribeka Takachi; Junko Ishihara; Yuri Ishii; Kumiko Kito; Sachiko Maruya; Kazutoshi Nakamura; Junta Tanaka; Kazumasa Yamagishi; Taiki Yamaji; Hiroyasu Iso; Motoki Iwasaki; Shoichiro Tsugane; Norie Sawada, Using Food Frequency Questionnaires (FFQs) to compare dietary references for screening has been in high demand. However, FFQs have been widely used for ranking individuals in a population based on their dietary intake. We determined the validity of sodium (salt equivalent) intake, potassium intake, and sodium-to-potassium (Na/K) ratio obtained using the FFQ for identifying individuals who deviated from the dietary reference intakes (DRIs) measured using multiple 24-h urinary excretion measurements or 12-day weighed food records (WFR). This study included 235 middle-aged subjects. The correlation coefficients (CCs) between the FFQ and WFR estimates were mostly moderate (0.24-0.54); the CCs between the FFQ and 24-h urinary excretion measurements were low or moderate (0.26-0.38). Values of area under the receiver-operating curve (AUC) at the point of DRIs for salt equivalent or potassium were >0.7 with the WFR as the reference standard and 0.60-0.76 with the 24-h urinary excretion as the reference standard. Using both standard measures, the AUC for the Na/K ratio was <0.7. The accuracy of salt equivalent and potassium intake estimation using the FFQ to determine absolute intake point was comparable to that using WFR, allowing for quantified error, but not as good as that of 24-h urinary excretion., 23 Jun. 2022, 14, 13, Scientific journal, True, 10.3390/nu14132594
  • Journal of epidemiology, Applicability of a web-based 24-hour dietary recall tool for Japanese populations in large-scale epidemiological studies., Yoshie Hose; Junko Ishihara; Ayaka Kotemori; Misako Nakadate; Sachiko Maruya; Junta Tanaka; Hiroshi Yatsuya; Atsuko Aoyama; Chifa Chiang; Tsuneo Konta; Takamasa Kayama; Yoshiyuki Ueno; Manami Inoue; Norie Sawada; Shoichiro Tsugane; Ribeka Takachi, BACKGROUND: Recent innovations in information and communication technology have made it possible to assess diet using web-based methods; however, their applicability in the general population remains unclear. Hence, we aimed to examine the applicability of a web-based 24-hour dietary recall (24HR) tool to large-scale epidemiological studies by determining the sampling rate and characteristics of randomly selected participants (partially entire population) from a Japanese cohort study. METHODS: In total, 5,013 individuals were recruited from a cohort of 21,537 individuals, and 975 agreed to participate in this study. The participants selected either self-administered web-based dietary 24HR (self-administered 24HR) or interviewer-administered telephone-based 24HR (interviewer-administered 24HR) as the method for the dietary assessment and answered questions regarding the acceptability of the system. RESULTS: The response rate of the 975 participants was 19.4%, and approximately 4.5% of the total study population. About half of them chose the self-administered 24HR (46.9%). The median time required for the self-administered and interviewer-administered 24HR was 25 and 27 minutes, respectively. In the self-administered 24HR, older people, regardless of sex, tended to require a longer time, and approximately 60% of the participants rated the ease of use of the system as "somewhat difficult" or "difficult." CONCLUSIONS: Characteristics of the participants in this study were not systemically different from those of the entire study population. Improvements in approach for the entering cooking details and the dish name selection may be necessary for better acceptability in order to be accepted as a self-administered 24HR., 19 Mar. 2022, Scientific journal, False, 10.2188/jea.JE20220071
  • Journal of nutritional science and vitaminology, New Environmental-Related Approaches to Improved Eating Behavior and Nutrition across One's Life Course., Ribeka Takachi; Sachiko Maruya; Junko Ishihara, It is worthwhile to discuss new environmental-related approaches to eating behavior that are effective throughout one's life course for better nutrition. Salt-reduction programs for children may benefit from strategies that actively engage families and teachers, according to a school-based cluster randomized controlled trial (School-EduSalt) in China to reduce salt intake in children and their families. Considering young people's lifestyle, a population-based approach for healthy low-risk people is necessary; for example, the use of an educational song consisting of interesting sounds and lyrics as BGM may be effective. Self-monitoring of salt intake or salt concentrations in home seasoning by a versatile salinity meter may be another effective educational approach in reducing salt intake by raising the individual's awareness on their rate of salt intake. Further, shift workers have increased risk of diet-related chronic conditions due to their eating habits. Moreover, mental illnesses among workers require nutritional approaches because they may have effects on subsequent weight changes. Finally, studies for the eldery suggest the importance of a nutritional approach especially for males living alone to prevent or improve frailty. A three-month approach that included nutritional education for the elderly reduced frailty, and the effects persisted post-intervention. These results are quite encouraging for nutritionists in their efforts to create a vibrant society, despite its incredibly age., 2022, 68, Supplement, S58-S60, Scientific journal, False, 10.3177/jnsv.68.S58


  • 日本疫学会学術総会講演集(Web), 家庭調味モニタリングまたは低塩調味料による減塩効果検討のための無作為化比較試験, 神田真希; 丸谷幸子; 中舘美佐子; 松本海保; 島袋夏乃華; 戸谷みのり; 本多泉美; 岩崎基; 高地リベカ; 石原淳子; 石原淳子, 2019, 29th


  • 荻野麻子; 高地リベカ; 石原淳子; 菅原詩緒理; 保科由智恵; 鬼頭久美子; 中舘美佐子; 丸谷幸子; 鈴木碧; 小原拓; 石黒真美; 上野史彦; 野田あおい; 相澤美里; 高橋一平; 米沢祐大; 山下貴宏; 鈴木重徳; 村上慶; 子; 栗山進一, 日本疫学会学術総会, 複数回の食物摂取頻度調査(FFQ)による栄養素等摂取量推定の妥当性~東北メディカル・メガバンク地域住民コホート妥当性研究, Poster presentation, 02 Feb. 2023
  • 山岸万里菜; 高地リベカ; 石原淳子; 小川冬華; 丸谷; 幸子; 石井有里; 鬼頭久美子; 中村和利; 田中純太; 山地太樹; 磯博康; 岩崎基; 津金昌一郎; 澤田典絵, 日本疫学会学術総会, 秤量食事記録によるナトリウム摂取源と24時間尿中ナトリウム排泄量との関連., Poster presentation, 02 Feb. 2023
  • 中舘美佐子; 石原淳子; 高地リベカ; 菅原詩緒理; 保; 科由智恵; 鬼頭久美子; 小手森綾香; 丸谷幸子; 荻野麻子; 鈴木碧; 小原拓; 石黒真美; 野田あおい; 相澤美里; 高橋一平; 米沢祐大; 山下貴宏; 鈴木重徳; 村上慶子; 栗山進一, 日本疫学会学術総会, 一般成人における24時間思い出しWeb 食事調査に よる栄養素等摂取量推定の妥当性, Poster presentation, Feb. 2023
  • Takachi R; Maruya S, 22nd IUNS-ICN INTERNATIONAL CONGRESS OF NUTRITION IN TOKYO, Symposium Nutrition Through Life Course “Approach across lifecourse for better nutrition” The effect of educational background music on reducing salt intake at a university canteen., Public symposium, 09 Dec. 2022
  • Suzuki A; Matsuno T; Takachi R; Ishihara J; Ishii Y; Kito K; Maruya S; Iwasaki M; Tsugane S; Sawada N, 22nd IUNS-ICN INTERNATIONAL CONGRESS OF NUTRITION IN TOKYO, Validity for estimated intakes of sodium, potassium, and sodium-to-potassium ratio by the FFQ and the 12-day weighed food records to screen at a point of absolute intake comparing with multiple 24-hour urinary excretion among middle-aged and elderly Japanese., Poster presentation, 09 Dec. 2022
  • 丸谷幸子, 奈良県栄養士会生涯学習研修会, 感染症予防ー教育現場(大学)での感染症予防対策ー, Nominated symposium, 26 Jun. 2021
  • 藤原紗音; 丸谷幸子; 小川冬華; 松野友華; 高地リベカ, 日本栄養改善学会学術総会, 「適塩ソング」BGM放送の食塩取行動への影響―特定給食施設における非無作為化比較試験―., Others, Sep. 2020
  • 高地リベカ; 丸谷幸子, 奈良県栄養士会生涯学習研修会, 調査の設計について、集計・まとめに関する演習), Public discourse, 14 Jul. 2018

Research Projects

  • 若手研究, Apr. 2019, Mar. 2023, 19K20146, Principal investigator, 減塩ソングBGMによるポピュレーション・アプローチの効果-生体試料を用いた検証-, 丸谷 幸子, 日本学術振興会, 科学研究費助成事業 若手研究, 奈良女子大学, 4290000, 3300000, 990000, 減塩の、「新たなポピュレーションアプローチ手法の提示」を目指し、適塩ソングのBGM放送による減塩・食行動変容への効果を非無作為化比較試験により検討している。 【2020年4月までの実績】すべての対象についての調査が完了し、現在尿中物質の測定、と資料データ化を進めている。完了後速やかにBGMの効果を検討するための解析に移行する予定である。一部新型コロナウィルス感染症流行の影響により調査方法を変更した。 【対象者】社員食堂をもつ4企業より研究協力の承諾を得、当該企業の従業員に研究への参加を呼びかけた。参加に文書にて同意した対象者を、企業単位で対照群・介入群に割付け、試験を実施した。【介入項目】対照群には視覚資料、介入群には視覚資料+BGM放送による介入を行った。【評価項目】主要指標:随時尿中ナトリウム排泄量より得られる食塩摂取量の介入前後での変化量、副次指標:食塩摂取行動の評価について妥当性が検討された簡易質問紙により算出される食塩摂取行動スコアの変化量とした。食塩摂取量の季節変動の影響を最小限にするため、また、減塩に興味が薄い者も組み入れやすくするため、毎年同時期に定例実施される各企業の健康診断に合わせて調査を行い、随時尿は健診尿検査検体を、解析に必要な身体・生活習慣の情報は、本人の同意を得て健康診結果の提供を受けた。【スケジュール】初年度の健康診断にて介入前の調査(事前調査)を実施し、直後より5週間の初回介入を行った。介入後の事後調査は次年度(1年後)の健康診断時に実施した。初回介入と事後調査の間には、介入群において月に1度BGMの放送(対照群は従来の食育)と、事後調査直前に再度5週間の介入を実施した。また、BGMの減塩への短期間での影響評価のため、中間調査として初回介入直後に簡易質問紙による調査を行った。
  • 基盤研究(C), Apr. 2022, Mar. 2026, 22K02137, Principal investigator, スポット尿を用いた食塩摂取量とナトリウム・カリウム比評価法の再構築, 丸谷 幸子; 高地 リベカ; 大滝 直人; 前田 晃宏; 澤田 典絵, 日本学術振興会, 科学研究費助成事業 基盤研究(C), 奈良女子大学, 4160000, 3200000, 960000, kaken

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