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Acta of Bioengineering and Biomechanics

Tytuł artykułu

A longitudinal assessment of myoelectric activity, postural sway, and low-back pain during pregnancy

Autorzy Moreira, L. S.  Elias, L. A.  Gomide, A. B.  Vieira, M. F.  Do Amaral, W. N. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN The present study aimed at investigating the control of upright quiet standing in pregnant women throughout pregnancy, and whether low-back pain exerts influence on this motor task. Methods: Myoelectric signals from postural muscles and stabilometric data were collected from 15 non-pregnant and 15 pregnant women during upright quiet standing. Electromyogram envelopes and center of pressure metrics were evaluated in the control group, as well as in pregnant women in their first and third trimester of pregnancy. A correlation analysis was performed between the measured variables and a low-back pain disability index. Results: Pregnant women exhibited a decreased maximum voluntary isometric activity for all postural muscles evaluated. Additionally, the activity of lumbar muscles during the postural task was significantly higher in the pregnant women in comparison to the non-pregnant controls. The soleus muscle maintained its activity at the same level as the gestation progressed. Higher postural oscillations were observed in the anteroposterior direction while mediolateral sway was reduced in the third trimester of pregnancy. No correlation was detected between the lowback pain disability index and neuromechanical variables. Conclusion: This study provides additional data regarding the functioning and adaptations of the postural control system during pregnancy. Also, we provide further evidence that postural control during quiet standing cannot be used to predict the occurrence of low-back pain. We hypothesize that the modifications in the neural drive to the muscles, as well as in postural sway may be related to changes in the biomechanics and hormonal levels experienced by the pregnant women.
Słowa kluczowe
PL elektromiografia   stabilność postawy   bóle kręgosłupa  
EN electromyography   low back pain   postural balance   pregnancy trimesters   stabilometry  
Wydawca Oficyna Wydawnicza Politechniki Wrocławskiej
Czasopismo Acta of Bioengineering and Biomechanics
Rocznik 2017
Tom Vol. 19, nr 3
Strony 77--83
Opis fizyczny Bibliogr. 25 poz., tab., wykr.
autor Moreira, L. S.
  • Faculty of Medicine, Federal University of Goiás, Goiânia, GO, Brazil
  • Faculty of Physical Education, Federal University of Goiás, Goiânia, GO, Brazil
  • Cellular and Structural Biology Graduate Program, Institute of Biology, University of Campinas, Campinas, SP, Brazil
autor Elias, L. A.
  • Department of Biomedical Engineering, School of Electrical and Computer Engineering, University of Campinas, Campinas, SP, Brazil
autor Gomide, A. B.
  • Faculty of Medicine, Federal University of Goiás, Goiânia, GO, Brazil
  • Faculty of Physical Education, Federal University of Goiás, Goiânia, GO, Brazil
autor Vieira, M. F.
  • Faculty of Medicine, Federal University of Goiás, Goiânia, GO, Brazil
  • Faculty of Physical Education, Federal University of Goiás, Goiânia, GO, Brazil
autor Do Amaral, W. N.
  • Faculty of Medicine, Federal University of Goiás, Goiânia, GO, Brazil
  • Department of Gynecology and Obstetrics, Faculty of Medicine, Federal University of Goiás, Goiânia, GO, Brazil
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Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-b0cc7f75-aa2d-4716-8aaf-d037c8b9d580
DOI 10.5277/ABB-00753-2016-02