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| Author(s): |
Lúcia Desideri Junqueira
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Psicologia (IP/SBD) |
| Defense date: | 2012-09-04 |
| Examining board members: |
Marcos Duarte;
Arturo Forner Cordero;
Sandra Maria Sbeghen Ferreira de Freitas
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| Advisor: | Marcos Duarte |
| Abstract | |
Background: Load carriage may cause spinal pain and biomechanics lumbar spine alteration. Among women, carrying babies is a frequent and relevant spinal load but there are no data regarding its biomechanical effect. Purpouse: This study aims to investigate the impact of transporting babies in spinal curvature and in the displacement of center of gravity (COG) on the body of mothers. Secondly, this effect was compared to those effects arising from inanimate cargo transportation, and transportation for women who never had children. Method: Twenty consecutive mothers with babies with approximately 10kg (M-group) and 44 women never pregnant (NM-group) were included in the study. All of them were evaluated using 3D movement analysis system and data were calculated as 2D projection angles in the following conditions: no load (NL); carrying a dummy (D) with similar weight of their respective babies for M-group and with 10kg for NM-group and carrying baby (B) just for mothers. Babies and dummies were carried at the front of the trunk with both arms and tasks performed were: walking 10 trials straight on a flat floor at a comfortable speed, one trial standing still and upright for 30 seconds. Results: The two groups had comparable mean of age (p<0,05). Load affected only the sagital plane angles for the M-group (p<0,001): pelvic inclination (NL= 12°; D= 10°; B= 10°), thoracic kyphosis (NL= 25°; D= 29°; B= 30°), lumbar lordosis (NL= 17°; D= 27°; B= 25°) and trunk extension (NL= 6°; D= -4°; B= -2°). Likewise, alterations in these curvatures was observed in NM-group (p<0,001): pelvic inclination (NL= 14°; D= 12°), thoracic kyphosis (NL= 25°, D= 28°), lumbar lordosis (NL= 19°, D= 24°) and trunk extension (NL= 5°; D= -2). The load conditions printed different alterations in thoracic kyphosis, lumbar lordosis and trunk extension for the M-group (p<0,05). Differences between the postural adjustments made by women in both groups were only notable angles average lumbar lordosis and trunk extension (p <0.001). The effect of extra weight in the upward displacement of the CG was similar between the loading conditions conducted by the group Mothers (no load = -4 cm = 2 cm doll, baby = 2 cm) and the group non-mothers (no load = -4 cm; dummy = 1 cm), with no difference between groups (p> 0.05). Conclusion: In conclusion, carrying babies produces significant alterations on the spinal curvatures of mothers, mainly at the lumbar region. There are significant differences of the inanimate load transport and postural adjustments made by women who never had children (AU) | |
| FAPESP's process: | 10/02579-8 - Analysis of the spine curvatures of mothers as a function of carrying their babies |
| Grantee: | Lúcia Desideri Junqueira |
| Support Opportunities: | Scholarships in Brazil - Master |