Examination about appropriateness of the posture of side lying based on ergonomic approach

• Project/Area Number: 17H07201
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Lifelong developmental nursing
• Research Institution: Kanagawa Institute of Technology
• Principal Investigator: AOKI MAKIKO 神奈川工科大学, 看護学部, 助教 (80589052)
• Research Collaborator: SUZUKI Satoshi ; TAKAO Hidenobu
• Project Period (FY): 2017-08-25 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 授乳姿勢 / 添い乳（臥位での授乳） / 人間工学 / 育児支援 / 筋電図 / 母親の身体負担

Outline of Final Research Achievements

This Study’s Purpose is to explore the relationship between breastfeeding positions and pain in the upper arms and shoulders and Optimization of side-lying.
Results are the guidance on each holding position received from medical institutions or other sources, and the holds that were actually used by the subjects for breastfeeding their infants. Breastfeeding was often unevenly distributed between the left and right sides. Investigation of the relationship between the left/right distribution of chronic pain and the left/right breastfeeding ratio (either in one of the seated positions, or in a side-lying hold) showed that for the side-lying hold, the left/right breastfeeding ratio and chronic pain are related. Based on these examinations, we established a low-body-contributing method for side-lying.

Academic Significance and Societal Importance of the Research Achievements

授乳姿勢による身体負担の明確化および身体負担を最小にする授乳姿勢の確立についての研究は希少である。さらに、日本特有の文化とも言える添い乳は、多くの母親が疲れた身体を休めるために行う授乳方法である。そのように需要があるにもかかわらず添い乳に関する研究はされていない。身体負担が少ない授乳姿勢の確立は、母親にとって最も重要な育児支援の一つであり、健やかな母子関係に大きく貢献できると考えている。

Research Products

• [Journal Article] Pain related to breastfeeding in seated and side-lying positions: assessment and recommendations for improved guidance (2017)
  • Author(s): Makiko Aoki, Satoshi Suzuki, Hidenobu Takao, Fumitaka Ikarashi
  • Journal Title: Journal of Ergonomic Technology Volume: 17(1) Pages: 43-59
  • Peer Reviewed / Open Access
• [Presentation] 授乳姿勢におけるOWAS法による負担評価 (2018)
  • Author(s): 青木真希子,鈴木聡
  • Organizer: 第6回看護理工学会学術
• [Presentation] ,母親からみた授乳姿勢における問題点 (2017)
  • Author(s): 青木真希子,鈴木聡,高尾秀伸,三澤久恵
  • Organizer: ,人間工学会第25回システム大会部会
• [Presentation] 様々な授乳姿勢における上肢の筋活動評価 (2017)
  • Author(s): 青木真希子,鈴木聡,高尾秀伸
  • Organizer: ,第58回日本母性衛生学会総会・学術集会