Elucidation of the process of trunk muscle injury and recovery of trunk muscle function in postpartum women using new imaging techniques.

2023 Fiscal Year Final Research Report

• Project/Area Number: 19K19849
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 59010:Rehabilitation science-related
• Research Institution: Toin University of Yokohama
• Principal Investigator: Narita Takaya 桐蔭横浜大学, スポーツ科学部, 教授 (70515577)
• Project Period (FY): 2019-04-01 – 2024-03-31
• Keywords: 腹直筋離開 / 妊婦 / 産褥婦 / 腹筋運動

Outline of Final Research Achievements

Rectus abdominis muscle separation distance (cm) and rectus abdominis muscle hardness (change in response to pressure) were measured by ultrasound during pregnancy and postpartum in 45 postpartum women. The distance of rectus abdominis muscle detachment at rest during pregnancy was 3.4 ± 1.3 cm after 32 weeks, which was less than that reported overseas. We also compared the distance of rectus abdominis muscle detachment during head up and draw-in, and examined the relationship between effective exercises for rectus abdominis muscle detachment and low back pain. It was found that there were individual differences in the effectiveness of exercise both during pregnancy and postpartum. In addition, it was found that a greater change in the distance of rectus abdominis muscle release with exercise was related to the intensity of low back pain.

Translated with DeepL.com (free version)

Free Research Field

運動器リハビリテーション

Academic Significance and Societal Importance of the Research Achievements

当初、産褥婦の腹直筋離開距離を超音波にて測定したものは無かった。妊婦の腹直筋離開距離を妊娠期別に測定し、妊娠が進むにつれ拡大するものの、諸外国の報告との比較では、かなり狭いことを明らかにした点は、学術的に意義がある。
また、腹筋運動時の腹直筋離開距離の変化の方向は、一定の見解は得ず、また、種類により差を認めず、個人差が大きい事、腹直筋離開距離の変化量が腰痛の強さと関連していることを明らかにした点は、運動療法作成時の一助になると思われ、社会的意義がある。