Changes in balance strategy in the third trimester |
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| Authors: | Kaname Takeda Kiyomi Shimizu Masumi Imura |
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| Affiliation: | 1) Division of Physical Therapy, Department of Rehabilitation Sciences, Faculty of Allied Health Sciences, Kansai University of Welfare Sciences, Japan;2) Department of Nursing, Faculty of Nursing, Josai International University, Japan;3) Master’s Program in International Health Care and Midwifery, The Japanese Red Cross College of Nursing, Japan |
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| Abstract: | ![]()
[Purpose] The purpose of this study was to elucidate changes in balance strategy duringpregnancy from a kinematics perspective. [Subjects] Eight pregnant women and eightnon-pregnant women participated. [Methods] A 3D motion analysis system, two force plates,and 10 infrared cameras were used to measure the kinematics of the balance strategy. The3D motion analysis system was used to analyze performance of the functional reach test(FRT). Parameters were compared between non-pregnant women and pregnant women during eachtrimester, and between pregnant women in the second and third trimesters. [Results] TheFRT of pregnant women was shorter than that of non-pregnant women. Bilateral hip jointextension moments were smaller in pregnant women in the second and third trimesterscompared to non-pregnant women. Bilateral ankle plantar flexion moments were larger inpregnant women in their third trimester compared to non-pregnant women. In pregnant women,the right ankle plantar flexion moment was larger in the third trimester than in thesecond trimester. [Conclusion] These results suggest that forward reach distance isreduced, and that the ankle joint strategy takes precedence over the hip joint strategy inmaintaining balance during pregnancy compared to non-pregnancy.Key words: Joint moment, Balance strategy, Functional reach test |
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