Effect of Dietary Nori (Dried Laver) on Blood Pressure in Young Japanese Children: An Intervention Study
Background: Few studies have examined the association between seaweed intake and blood pressure in children. We conducted an intervention study to investigate whether seaweed intake affects blood pressure. Methods: Subjects were children aged 4 to 5 years attending a preschool in Aichi Prefecture, J...
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| Format: | Article |
| Language: | English |
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Japan Epidemiological Association
2021-01-01
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| Series: | Journal of Epidemiology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jea/31/1/31_JE20190176/_pdf |
| _version_ | 1818871083927863296 |
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| author | Keiko Wada Michiko Tsuji Kozue Nakamura Shino Oba Sakiko Nishizawa Keiko Yamamoto Kaori Watanabe Kyoko Ando Chisato Nagata |
| author_facet | Keiko Wada Michiko Tsuji Kozue Nakamura Shino Oba Sakiko Nishizawa Keiko Yamamoto Kaori Watanabe Kyoko Ando Chisato Nagata |
| author_sort | Keiko Wada |
| collection | DOAJ |
| description | Background: Few studies have examined the association between seaweed intake and blood pressure in children. We conducted an intervention study to investigate whether seaweed intake affects blood pressure. Methods: Subjects were children aged 4 to 5 years attending a preschool in Aichi Prefecture, Japan, in 2010. Among 99 students, 89 (89.9%) were enrolled in our study. Nori (dried laver), an edible seaweed widely consumed in Japan, was used as a dietary intervention. Children in the intervention group were asked to consume 1.76 grams per day of roasted nori in addition to standard meals for 10 weeks. Children in the control group consumed their usual diet. Before the intervention and at the 10th week of the intervention, children’s blood pressure was measured three times successively using an automated sphygmomanometer with subjects in a sitting position. Changes in systolic (SBP) and diastolic blood pressure (DBP) were compared between 55 children in the intervention group and 26 in the control group after adjustment for SBP and DBP before the intervention. Results: Changes in SBP were −8.29 mm Hg in the intervention group and +0.50 mm Hg in the control group (P for difference in change = 0.051). Changes in DBP were −6.77 mm Hg in the intervention group and −0.05 mm Hg in the control group (P = 0.031). In girls, no difference in blood pressure changes was found between the intervention and control groups. Conclusion: Nori intake lowered DBP level in boys. Seaweed intake might have preventive effects on elevated blood pressure in childhood. |
| first_indexed | 2024-12-19T12:17:17Z |
| format | Article |
| id | doaj.art-ec810e5d4fb146ff8a5a1015ee6e678d |
| institution | Directory Open Access Journal |
| issn | 0917-5040 1349-9092 |
| language | English |
| last_indexed | 2024-12-19T12:17:17Z |
| publishDate | 2021-01-01 |
| publisher | Japan Epidemiological Association |
| record_format | Article |
| series | Journal of Epidemiology |
| spelling | doaj.art-ec810e5d4fb146ff8a5a1015ee6e678d2022-12-21T20:21:56ZengJapan Epidemiological AssociationJournal of Epidemiology0917-50401349-90922021-01-01311374210.2188/jea.JE20190176Effect of Dietary Nori (Dried Laver) on Blood Pressure in Young Japanese Children: An Intervention StudyKeiko Wada0Michiko Tsuji1Kozue Nakamura2Shino Oba3Sakiko Nishizawa4Keiko Yamamoto5Kaori Watanabe6Kyoko Ando7Chisato Nagata8Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, JapanDepartment of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, JapanDepartment of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, JapanDepartment of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, JapanDepartment of Food and Culture Science, Aichi Bunkyo Women’s College, Aichi, JapanDepartment of Food and Culture Science, Aichi Bunkyo Women’s College, Aichi, JapanDepartment of Food and Culture Science, Aichi Bunkyo Women’s College, Aichi, JapanDepartment of Food and Culture Science, Aichi Bunkyo Women’s College, Aichi, JapanDepartment of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, JapanBackground: Few studies have examined the association between seaweed intake and blood pressure in children. We conducted an intervention study to investigate whether seaweed intake affects blood pressure. Methods: Subjects were children aged 4 to 5 years attending a preschool in Aichi Prefecture, Japan, in 2010. Among 99 students, 89 (89.9%) were enrolled in our study. Nori (dried laver), an edible seaweed widely consumed in Japan, was used as a dietary intervention. Children in the intervention group were asked to consume 1.76 grams per day of roasted nori in addition to standard meals for 10 weeks. Children in the control group consumed their usual diet. Before the intervention and at the 10th week of the intervention, children’s blood pressure was measured three times successively using an automated sphygmomanometer with subjects in a sitting position. Changes in systolic (SBP) and diastolic blood pressure (DBP) were compared between 55 children in the intervention group and 26 in the control group after adjustment for SBP and DBP before the intervention. Results: Changes in SBP were −8.29 mm Hg in the intervention group and +0.50 mm Hg in the control group (P for difference in change = 0.051). Changes in DBP were −6.77 mm Hg in the intervention group and −0.05 mm Hg in the control group (P = 0.031). In girls, no difference in blood pressure changes was found between the intervention and control groups. Conclusion: Nori intake lowered DBP level in boys. Seaweed intake might have preventive effects on elevated blood pressure in childhood.https://www.jstage.jst.go.jp/article/jea/31/1/31_JE20190176/_pdfblood pressurechildlavernutritionseaweed |
| spellingShingle | Keiko Wada Michiko Tsuji Kozue Nakamura Shino Oba Sakiko Nishizawa Keiko Yamamoto Kaori Watanabe Kyoko Ando Chisato Nagata Effect of Dietary Nori (Dried Laver) on Blood Pressure in Young Japanese Children: An Intervention Study Journal of Epidemiology blood pressure child laver nutrition seaweed |
| title | Effect of Dietary Nori (Dried Laver) on Blood Pressure in Young Japanese Children: An Intervention Study |
| title_full | Effect of Dietary Nori (Dried Laver) on Blood Pressure in Young Japanese Children: An Intervention Study |
| title_fullStr | Effect of Dietary Nori (Dried Laver) on Blood Pressure in Young Japanese Children: An Intervention Study |
| title_full_unstemmed | Effect of Dietary Nori (Dried Laver) on Blood Pressure in Young Japanese Children: An Intervention Study |
| title_short | Effect of Dietary Nori (Dried Laver) on Blood Pressure in Young Japanese Children: An Intervention Study |
| title_sort | effect of dietary nori dried laver on blood pressure in young japanese children an intervention study |
| topic | blood pressure child laver nutrition seaweed |
| url | https://www.jstage.jst.go.jp/article/jea/31/1/31_JE20190176/_pdf |
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