Effects of physical activity during pregnancy on preterm delivery and mode of delivery: The Japan Environment and Children’s Study, birth cohort study

• Mio Takami ,

  Contributed equally to this work with: Mio Takami, Akiko Tsuchida

  Roles Conceptualization, Investigation, Methodology, Project administration, Writing – original draft

  * E-mail: tkmmio@yokohama-cu.ac.jp

  Affiliations Perinatal Center for Maternity and Neonate, Yokohama City University Medical Center, Japan, Kanagawa Regional Center for JECS, Graduate School of Medicine, Yokohama City University, Kanagawa, Japan

  http://orcid.org/0000-0001-8761-8134

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• Akiko Tsuchida ,

  Contributed equally to this work with: Mio Takami, Akiko Tsuchida

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Software, Writing – review & editing

  Affiliations Department of Public Health, Faculty of Medicine, University of Toyama, Toyama, Japan, Toyama Regional Center for JECS, University of Toyama, Toyama, Japan

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• Ayako Takamori,

  Roles Data curation, Investigation, Methodology, Writing – review & editing

  Affiliations Department of Public Health, Faculty of Medicine, University of Toyama, Toyama, Japan, Clinical Research Center, Saga University Hospital, Saga, Japan

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• Shigeru Aoki,

  Roles Conceptualization, Investigation, Methodology, Project administration, Writing – review & editing

  Affiliations Perinatal Center for Maternity and Neonate, Yokohama City University Medical Center, Japan, Kanagawa Regional Center for JECS, Graduate School of Medicine, Yokohama City University, Kanagawa, Japan

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• Mika Ito,

  Roles Conceptualization, Investigation, Methodology, Writing – review & editing

  Affiliations Toyama Regional Center for JECS, University of Toyama, Toyama, Japan, Department of Obstetrics and Gynecology, Faculty of Medicine, University of Toyama, Toyama, Japan

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• Mika Kigawa,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – review & editing

  Affiliations Department of Public Health, Faculty of Medicine, University of Toyama, Toyama, Japan, Faculty of Health and Welfare, Kanagawa University of Human Services, Kanagawa, Japan

  http://orcid.org/0000-0002-8131-5682

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• Chihiro Kawakami,

  Roles Conceptualization, Data curation, Project administration, Validation, Writing – review & editing

  Affiliation Kanagawa Regional Center for JECS, Graduate School of Medicine, Yokohama City University, Kanagawa, Japan

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• Fumiki Hirahara,

  Roles Data curation, Project administration, Supervision, Validation, Writing – review & editing

  Affiliations Kanagawa Regional Center for JECS, Graduate School of Medicine, Yokohama City University, Kanagawa, Japan, Department of Obstetrics and Gynecology, Yokohama City University Hospital, Kanagawa, Japan

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• Kei Hamazaki,

  Roles Data curation, Formal analysis, Investigation, Methodology, Validation, Writing – review & editing

  Affiliations Department of Public Health, Faculty of Medicine, University of Toyama, Toyama, Japan, Toyama Regional Center for JECS, University of Toyama, Toyama, Japan

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• Hidekuni Inadera,

  Roles Project administration, Supervision, Validation, Writing – review & editing

  Affiliations Department of Public Health, Faculty of Medicine, University of Toyama, Toyama, Japan, Toyama Regional Center for JECS, University of Toyama, Toyama, Japan

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• Shuichi Ito,

  Roles Project administration, Supervision, Validation, Writing – review & editing

  Affiliations Kanagawa Regional Center for JECS, Graduate School of Medicine, Yokohama City University, Kanagawa, Japan, Department of Pediatrics, Graduate School of Medicine, Yokohama City University, Kanagawa, Japan

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• and the Japan Environment & Children’s Study (JECS) Group

  ¶Memberships of the Japan Environment & Children’s Study (JECS) Group is provided in the Acknowledgments.

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