Spinal Curvature and Lower Extremities Kinematics of Simulated Pregnancy during Stair Ascending and Descending
| Autor: | Mariam Abu Olaim, Abeer Obeid, Othman Smadi, Ihssan S. Masad, Sami Almashaqbeh |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
musculoskeletal diseases
Pregnancy 030219 obstetrics & reproductive medicine Spinal curvature business.industry Stair climbing 0206 medical engineering 02 engineering and technology Anatomy Kinematics musculoskeletal system medicine.disease 020601 biomedical engineering body regions 03 medical and health sciences 0302 clinical medicine medicine business human activities |
| Zdroj: | Journal of Biomimetics, Biomaterials and Biomedical Engineering. 41:11-22 |
| ISSN: | 2296-9845 |
| DOI: | 10.4028/www.scientific.net/jbbbe.41.11 |
| Popis: | The purpose of this work is to investigate the effect of anteriorly-added mass to simulate pregnancy on lower extremities kinematic and lumbar and thoracic angles during stair ascending and descending. 18 healthy females ascended and descended, with and without a pseudo-pregnancy sac of 12 kg (experimental and control groups, respectively), a costume-made wooden staircase while instrumented with 20 reflective markers placed on the lower extremities and the spine. The movements were captured by 12 infrared cameras surrounding the staircase. Tracked position data were exported to MATLAB to calculate the required joints angles. SPSS was used to compare the ascent and descent phases of control group, and to find if there are any significant differences between control and experimental groups in the ascent phase as well as in the descent phase. When comparing the ascent and descent phases of control group, data revealed a higher hip flexion during ascending and greater ankle planter-flexion and dorsiflexion, lumbar, and thoracic angles during descending; however, no significant difference was shown in the knee flexion angle between ascending and descending. Non-pregnant data showed greater maximum hip flexion and ankle dorsiflexion during stair ascending compared to simulated-pregnant group; while ankle planter-flexion, knee flexion, and lumbar angle were greater for simulated-pregnant status. During stair descending, non-pregnant group had greater minimum hip flexion and ankle dorsiflexion compared to simulated pregnant group; while ankle planter-flexion, knee flexion, and maximum hip flexion were greater for simulated-pregnant group. However, the lumbar and thoracic angles were found to be similar for simulated-pregnant and non-pregnant groups during stair descending. In conclusion, the current study revealed important kinematic modifications pregnant women adopt while ascending and descending stairs at their final stage of pregnancy to increase their stability. |
| Databáze: | OpenAIRE |
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