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de Abreu F.V.S.,Instituto Federal Do Norte Of Minas Gerais | Morais M.M.,Centro Universitario Of Belo Horizonte | Ribeiro S.P.,Federal University of Ouro Preto | Eiras A.E.,Federal University of Minas Gerais
Memorias do Instituto Oswaldo Cruz | Year: 2015

Despite the importance of the mosquito Aedes aegypti in the transmission of arboviruses, such as yellow fever, Chikungunya fever and dengue fever, some aspects of their behaviour remain unknown. In the present study, the oviposition behaviour of Ae. aegypti females that were exposed to different densities of breeding sites (2, 4, 8 and 16) was evaluated in laboratory and semi-field conditions. The number of breeding sites that were used was proportional to the number available, but tended towards stabilisation. Females used four-six breeding sites on average, with a maximum of 11. A high percentage of eggs was observed in the water, along with the presence of a breeding site termed “favourite”, which received at least 40% of the eggs. The results are discussed in ecological, evolutionary and epidemiological approaches. © 2015, Fundacao Oswaldo Cruz. All rights reserved. Source

Dias M.C.A.P.,Centro Universitario Of Belo Horizonte | Freire L.M.S.,Federal University of Minas Gerais | do Carmo Castro Franceschini S.,Federal University of Vicosa
Revista de Nutricao | Year: 2010

The objective of the present study was to review the current recommendations on the complementary feeding of children younger than two years of age. The keyword weaning was used to search the databases SciELO, MedLine and Lilacs for articles on the subject. Publications from the World Health Organization and the Brazilian Ministry of Health were also included. The inclusion criteria for the articles were children from 0 to 23 months of age, articles published from 2002 to 2006 and articles published in the languages Portuguese, English and Spanish. Much scientific evidence has accumulated over the last years regarding the importance of exclusive breastfeeding in the first six months, of appropriate complementary feeding and of breastfeeding until age two years or more. Appropriate complementary feeding should include foods that are rich in energy, protein and micronutrients, free from contaminations, without excess salt or spices, in adequate amounts and easy to prepare, ensuring correct consistency and energy density. The family has a decisive role in the formation of new habits, control of food intake and development of an eating behavior that may or may not be appropriate. The introduction of complementary foods is a critical stage and there are many disadvantages to the use of nonhuman milk and early and/or incorrect introduction of foods. It is the responsibility of health professionals to advise parents on the best complementary feeding practices and guide governmental actions aimed at the full growth and development of children under 2 years of age. Source

Oliveira R.C.,Federal University of Minas Gerais | Teixeira L.C.,Federal University of Minas Gerais | Gama A.C.C.,Federal University of Minas Gerais | de Medeiros A.M.,Centro Universitario Of Belo Horizonte
Jornal da Sociedade Brasileira de Fonoaudiologia | Year: 2011

Purpose: To establish the occurrence of dysphonic children and to relate data from auditory-perceptive, acoustic and vocal self-perception analyses of dysphonic and non-dysphonic children. Methods: Participants were 70 children, 37 female and 33 male, with ages ranging from 6 to 10 years. The sustained emission of the vowel /a/ was recorded, and children replied to the question "What do you think of your voice?". After that, the auditory-perceptive analysis of their voices was carried out, based on the parameters of the GRBASI scale. The acoustic analysis was also conducted, considering the following measures: fundamental frequency, frequency and amplitude perturbation quotient, and harmonic-to-noise ratio. The self-perception analysis of the subjects' voices was based on content analysis. Data were statistically analyzed. Results: The occurrence of dysphonic children was 37.14%. Breathiness was the most common vocal quality among dysphonic children, followed by roughness, which was also common. The acoustic measures frequency and amplitude perturbation quotient and harmonic-to-noise ration were higher among dysphonic children. However, these measures were similar between children that had positive self-perception and those with negative self-perception. Negative self-perception was more frequent among dysphonic children. Conclusion: The occurrence of dysphonia in the studied group was 37.14%. Dysphonic children present negative self-perception of their voices, voice quality predominantly rough and/or breathy, and altered acoustic measures, when compared to non-dysphonic children. Source

Lustosa L.P.,Centro Universitario Of Belo Horizonte | Ocarino J.M.,Federal University of Minas Gerais | Andrade M.A.P.D.,Federal University of Minas Gerais | Pertence A.E.D.M.,Federal University of Minas Gerais | Fonseca S.T.,Federal University of Minas Gerais
Journal of Electromyography and Kinesiology | Year: 2011

Background: ACL reconstruction is recommended to improve function in subjects with ligament injuries. However, after surgery, some individuals are not able to return to their pre-injury functional level. The mechanisms related to this incapacity are not well understood. Study design: Cross-sectional study. Methods: Co-contraction levels were assessed in individuals who returned to their pre-injury functional level and in 10 individuals who were not able to return to full activity after unilateral ACL reconstruction. Electromyography of the vastus lateralis and biceps femoris muscles before and after sudden perturbations applied during the stance phase of walking was used to calculate co-contraction. Results: The involved limb had lower co-contraction pre-perturbation than the non-involved limb in both groups (p= 0.049). The co-contraction level post-perturbation was significantly higher in the limited return group than in the full return group (p= 0.03). Conclusion: Decreased co-contraction in the involved limb before perturbation may be caused by sensorial changes resulting from surgery or injury. Increased co-contraction levels observed in the limited return group after perturbation may be a compensatory mechanism to make up for possible decreased intrinsic stability of the knee joint. Clinical relevance: Increased co-contraction after perturbation does not contribute to knee stability. © 2011 Elsevier Ltd. Source

Bassi I.B.,Federal University of Minas Gerais | Assuncao A.A.,Federal University of Minas Gerais | De Medeiros A.M.,Centro Universitario Of Belo Horizonte | Teixeira L.C.,Federal University of Minas Gerais | Cortes Gama A.C.,Federal University of Minas Gerais
Journal of Voice | Year: 2011

Objectives: To examine the impact of voice on the quality of life of teachers and to assess whether the degree of dysphonia and otorhinolaryngologists' (ORL) diagnostics are correlated with the quality of life. Methods: Eighty-eight female teachers from the municipal schools of Belo Horizonte who were in speech therapy at the Speech Therapy Clinic of the Hospital das Clínicas of Minas Gerais participated in the study. The variables studied were age, ORL diagnosis, perceptual-hearing assessment of voice through GRBAS scale, and vocal activities and participation profile (VAPP) protocol. Statistical analysis was performed through the descriptive analysis of the data and the Spearman coefficient of correlation. Results: The average age of the participants was 38 years. Vocal deviation: degree 1 - 56 teachers (63.6%); degree 2 - 27 teachers (30.6%); and without vocal deviation - five teachers (5.6%). It was found that 57.9% of the teachers presented combined ORL diagnosis. No statistically significant relationship was observed among the ORL diagnosis, the degree of dysphonia, and the parameter values of quality of life assessed by VAPP. Conclusions: The examined participants of this study presented light degree of vocal deviation and ORL combined diagnosis. According to the figures obtained by VAPP, there was negative impact of voice on the quality of life of female teachers, but these impacts were not correlated with ORL diagnosis and grade of dysphonia. © 2011 The Voice Foundation. Source

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