Biomechanics Archives - Revista Brasileira de Ginecologia e Obstetrícia
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2013;35(5):215-220
DOI 10.1590/S0100-72032013000500005
PURPOSE: To evaluate the body posture of women submitted to treatment for breast cancer, to identify the postural changes in the first three months after surgery and to investigate the correlation of these findings with the woman's age and type and side of surgery. METHODS: A longitudinal study that monitored the postural changes of 39 women who underwent mastectomy and quadrantectomy. Postural evaluation was performed using the technique of biophotogrammetry before surgery, after drain removal and three months after surgery. Statistical analysis was performed using parametric and nonparametric tests, with the level of significance set at p<0.05. RESULTS: The average age of the women studied was 50±10.5 years, 48.8% underwent mastectomy and the left breast was operated in 61.5% of them . There was no statistically significant difference in the women's posture during the study period. However, the pelvis and trunk of women submitted to quadrantectomy showed better alignment (90°) compared to the women submitted to mastectomy (91.3°). The women submitted to surgery in the left breast had shoulder elevation and ipsilateral inclination of the trunk within a short period of time. CONCLUSION: Postural changes were correlated with the type and side of surgery. The follow-up of this group after completion of treatment is needed to clarify long-term postural changes.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2013;35(5):215-220
DOI 10.1590/S0100-72032013000500005
PURPOSE: To evaluate the body posture of women submitted to treatment for breast cancer, to identify the postural changes in the first three months after surgery and to investigate the correlation of these findings with the woman's age and type and side of surgery. METHODS: A longitudinal study that monitored the postural changes of 39 women who underwent mastectomy and quadrantectomy. Postural evaluation was performed using the technique of biophotogrammetry before surgery, after drain removal and three months after surgery. Statistical analysis was performed using parametric and nonparametric tests, with the level of significance set at p<0.05. RESULTS: The average age of the women studied was 50±10.5 years, 48.8% underwent mastectomy and the left breast was operated in 61.5% of them . There was no statistically significant difference in the women's posture during the study period. However, the pelvis and trunk of women submitted to quadrantectomy showed better alignment (90°) compared to the women submitted to mastectomy (91.3°). The women submitted to surgery in the left breast had shoulder elevation and ipsilateral inclination of the trunk within a short period of time. CONCLUSION: Postural changes were correlated with the type and side of surgery. The follow-up of this group after completion of treatment is needed to clarify long-term postural changes.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2012;34(8):376-380
DOI 10.1590/S0100-72032012000800006
PURPOSES: To describe the process of gait initiation of pregnant women and to compare the behavior of the pressure center in the three trimesters of pregnancy. METHODS: Fifty-seven low-risk pregnant women were evaluated, aged 18 to 35 years, selected for convenience location during the three trimesters of pregnancy. The women were divided into three groups of 19 subjects each, according to gestational age - 1st quarter (4-12 weeks), 2nd quarter (13-28 weeks), and 3rd quarter (29-42 weeks,). Each patient was positioned standing up with one foot on each AMTI force platform until she heard a beep indicating that she should start walking a distance of four meter. Data were analyzed using the SPSS software. The Kolmogorov Smirnov test, Tukey's test and Spearman correlation coefficient were used for group comparisons, with 5% significance level in all tests. RESULTS: Significant differences were found between the 1st quarter (GFT) and 3rd quarter (GTT) groups regarding mediolateral oscillation amplitude (GFT: 0.4 cm and GTT: 0.2 cm) and mediolateral displacement rate (GFT: 0.9 cm/s and GTT: 0.4 cm/s). There was a gradual decrease in anteroposterior and mediolateral oscillation rate, and in the speed of displacement from platform 1 to platform 2 in GFT. There was a significant difference in oscillation amplitude and mediolateral displacement speed between GFT and GTT. CONCLUSION: The variables analyzed showed minor differences and do not constitute an imminent risk for the stability dynamics of pregnant woman.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2012;34(8):376-380
DOI 10.1590/S0100-72032012000800006
PURPOSES: To describe the process of gait initiation of pregnant women and to compare the behavior of the pressure center in the three trimesters of pregnancy. METHODS: Fifty-seven low-risk pregnant women were evaluated, aged 18 to 35 years, selected for convenience location during the three trimesters of pregnancy. The women were divided into three groups of 19 subjects each, according to gestational age - 1st quarter (4-12 weeks), 2nd quarter (13-28 weeks), and 3rd quarter (29-42 weeks,). Each patient was positioned standing up with one foot on each AMTI force platform until she heard a beep indicating that she should start walking a distance of four meter. Data were analyzed using the SPSS software. The Kolmogorov Smirnov test, Tukey's test and Spearman correlation coefficient were used for group comparisons, with 5% significance level in all tests. RESULTS: Significant differences were found between the 1st quarter (GFT) and 3rd quarter (GTT) groups regarding mediolateral oscillation amplitude (GFT: 0.4 cm and GTT: 0.2 cm) and mediolateral displacement rate (GFT: 0.9 cm/s and GTT: 0.4 cm/s). There was a gradual decrease in anteroposterior and mediolateral oscillation rate, and in the speed of displacement from platform 1 to platform 2 in GFT. There was a significant difference in oscillation amplitude and mediolateral displacement speed between GFT and GTT. CONCLUSION: The variables analyzed showed minor differences and do not constitute an imminent risk for the stability dynamics of pregnant woman.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2011;33(7):164-169
DOI 10.1590/S0100-72032011000700008
PURPOSE: to analyze the gait propulsion force and relate it to changes in the dimensions of the feet and to the influence on the quality of life of pregnant women. METHODS: two groups were studied, a control (C) one consisting of 20 non-pregnant women and a group of 13 pregnant women investigated during the three gestational trimesters (Gfirst, Gsecond, Gthird). The groups were subjected to an initial assessment; evaluation of gait propulsion force using the force platform (Bertec); measurement of foot length and width; assessment of perimetry by the figure eight method; and assessment of quality of life using the World Health Organization Quality of Life Instrument Bref (Whoqol-bref). The Mann-Whitney test was used to evaluate differences between group C and Gfirst, the Friedman test was used to determine differences between Gfirst, Gsecond and Gthird, and the Wilcoxon test was applied to significant cases. The level of significance was set at 5%. RESULTS: There was an increase in body mass (10.5 kg) and ankle edema (2.4 cm) during pregnancy. There was a decrease of gait propulsion force (10% of body mass) and an increase of mediolateral sway (10% of body mass) compared to Control Group. There was a reduced quality of life among pregnnat women, especially in the physical domain. CONCLUSIONS: Gait disorders occur during pregnancy, which can increase the risk of falls and musculoskeletal discomfort, which may affect the quality of life of pregnant wome
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2011;33(7):164-169
DOI 10.1590/S0100-72032011000700008
PURPOSE: to analyze the gait propulsion force and relate it to changes in the dimensions of the feet and to the influence on the quality of life of pregnant women. METHODS: two groups were studied, a control (C) one consisting of 20 non-pregnant women and a group of 13 pregnant women investigated during the three gestational trimesters (Gfirst, Gsecond, Gthird). The groups were subjected to an initial assessment; evaluation of gait propulsion force using the force platform (Bertec); measurement of foot length and width; assessment of perimetry by the figure eight method; and assessment of quality of life using the World Health Organization Quality of Life Instrument Bref (Whoqol-bref). The Mann-Whitney test was used to evaluate differences between group C and Gfirst, the Friedman test was used to determine differences between Gfirst, Gsecond and Gthird, and the Wilcoxon test was applied to significant cases. The level of significance was set at 5%. RESULTS: There was an increase in body mass (10.5 kg) and ankle edema (2.4 cm) during pregnancy. There was a decrease of gait propulsion force (10% of body mass) and an increase of mediolateral sway (10% of body mass) compared to Control Group. There was a reduced quality of life among pregnnat women, especially in the physical domain. CONCLUSIONS: Gait disorders occur during pregnancy, which can increase the risk of falls and musculoskeletal discomfort, which may affect the quality of life of pregnant wome