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.

Identyfikatory

DOI

10.5277/ABB-00753-2016-02

• Języki publikacji: EN

Abstrakty

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

EN

electromyography; low back pain; postural balance; pregnancy trimesters; stabilometry

PL

elektromiografia; stabilność postawy; bóle kręgosłupa

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2017
• Tom: Vol. 19, no. 3
• Strony: 77--83
• Opis fizyczny: Bibliogr. 25 poz., tab., wykr.

Twórcy

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

Bibliografia

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