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2001 Fiscal Year Final Research Report Summary

The influence of mental stress in pregnant woman exerts on fetus and infant

Research Project

Project/Area Number 12672337
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Clinical nursing
Research InstitutionKitasato University (2001)
Aichi Prefectural College of Nursing & Health (2000)

Principal Investigator

TAKAHASHI Mari  Kitasato University, Nursing, Professor, 看護学部, 教授 (20216758)

Co-Investigator(Kenkyū-buntansha) SIGEMITSU Sadahiko  University of Tsukuba, Medical, lecturer, 臨床医学系, 講師 (20235526)
Project Period (FY) 2000 – 2001
Keywordsmental sores / relaxation / pregnant women / fetus / mother infant relationship / autnomic nervous activity / HRV / AMIS
Research Abstract

<Objective> The aim of this study was to investigate the effect of different emotional states during mental stress vs. relaxation on autonomic nervous activity in women and fetuses in late pregnancy by using spectrum heart rate variability (HRV) analysis.
<Methods> Thirty-two pregnant women at 32 to 41 gestational weeks (mean age : 31.4 years, SD : 6.7 years) and 22 fetuses were studied. The mental stress method used was the Stroop Color Words Conflict Test (CWT), and the relaxation method used was guided imagery (GI). After 20 minutes of bed rest, maternal ECG and fetal heart rate (FHR) were recorded during the 3 states (Rest, CWT and GI) for 3 minutes. In pregnant women, data analysis of HRV in both time and frequency domains was performed, and the frequency domain shared of low frequency (LF : 0.04-0.15Hz) and high frequency (HF : 0.15-0.40Hz). The normalized HF power (high-frequency power/total power) was used as an index of modulation of vagal activity, and the LF/HF ratio was used … More as the index of modulation of sympathetic activity. At the same time STAI (State Trait Anxiety Inventory) Form-X state was measured just after the end of the states. In fetuses, data analysis of FHR in time domain and Doppler-detected fetal movement was performed.
<Results> 1) In pregnant women, STAI was significantly higher in CWT than at Rest and was significantly lower in GI than CWT (p<0.001). 2) For women in late pregnancy, HF was significantly lower in CWT than at Rest (p<0.01) and was significantly higher in GI than CWT (p<0.001), and LF/HF was significantly higher in CWT than at Rest (p<0.01) and was significantly lower in GI ・han CWT (p<0.01). 3) In active phase, basal FHR was significantly lower in GI than CWT and at Rest (p<0.05), and both SD (Standard Deviation) of FHR and CV (coefficient of variance) of FHR were significantly higher in GI than CWT and at Rest (p<0.05).
<Conclusion> These results suggest that emotional changes in late pregnant women affect autonomic nervous activity and that maternal emotions might have an influence on fetal reactions. Less

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] Takahashi, M., Sigemitsu, S., Kubo, T.: "The effects of emotional change during mental stress vs. relaxation on Autonomic nervous activity in late pregnancy : A heart rate Variability powerspectrum analysis as a marker of sympatho-vagal balance"International Journal of Behavioral Medicine. 7, supplement 1. 61 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Takahashi Mari: "The effects of emotional change on autonomic nervous activity in late pregnancy"Japan Academy of Nursing Science Fourth International Nursing Research Conference. 179 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 香取洋子, 高橋真理他: "産褥早期における日本語版AMISスケールの有用性に関する検討"日本赤ちゃん学会第2回学術集会抄録集. 64 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 香取洋子, 高橋真理他: "妊娠期における不安が産褥早期授乳場面の母子関係に及ぼす影響-Assessment of Mother-infant Sensitivity (AMIS) Scaleを用いた事例検討"日本看護研究学会雑誌. 25(3). 130 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 若狭晶子, 高橋真理他: "妊婦の妊娠経過に伴う不安の変化-STAI Form-Y版を用いて"日本看護研究学会雑誌. 25(3). 131 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 若狭晶子, 高橋真理他: "妊娠経過に伴う妊婦のタイプA行動パターンの変化"第43回日本母性衛生学会学術集会抄録集. 43(3). 245 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Takahashi Mari, Sigemitsu Sadahiko, Kubo Takeshi: "The effects emotional change during mental stress vs. relaxation on autonomic nervous activity in late pregnancy : A heart rate variability power spectrum analysis as a Marker of sympatho-vagal balance"Internatioal Journal of Behavioral of Medicine. 7, supplement 1. 61 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takahashi Mari: "The effects of emotional change on autonomic nervous activity in late pregnancy"Japan Academy of Nursing Science Fourth international Nursing Research Conference. 179 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2003-09-17  

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