ABSTRACT Currently in Brazil, large grain cultivation projects on Plinthosols are a reality, however, there is little or no knowledge of the real mechanism of formation of the plinthite feature, in addition to what is reported in the literature as being a product of oxidation-reduction processes of iron element. This study evaluates iron redoximorphic features and investigates their chemical and mineralogical composition in two profiles of Plinthosols from the Araguaia River plain (P1 and P2). The study strengthens the understanding of the pedogenetic processes involved in the formation of mottles and plinthite. In this sense, it assesses whether the formation mechanisms corroborate the literature. Soil features were sampled in the upper right and left position at the initial plinthic horizon, upper right and left position at the main plinthic horizon, and lower right position at the base horizon of the plinthite zone in the profile. Separated samples comprising the soil matrix, mottles, and plinthite under natural moisture conditions were ground into powder form for chemical determinations by X-ray fluorescence (XRF), sulfuric acid attack (H2SO4), sodium dithionite-citrate-bicarbonate (DCB), and ammonium acid oxalate; and mineralogical determinations by X-ray diffraction. Iron contents in all determined forms were always higher in the plinthite feature, intermediate in the mottle feature, and lower in the soil matrix feature. Most of the Fe in all redoximorphic features is included in the structure of primary minerals and their derivatives (vermiculite, illite, and VHEs). Only part of the iron present (about 35.40 % in P1 and 41.98 % in P2) is detected in the form of oxides such as goethite and hematite, which could be formed in redox processes. The mottle and plinthite features under study are not the product of the classic process of segregation, mobilization, and accumulation of iron as a consequence of redox processes. These features were formed or emerged as a result of a relatively slow and constant weathering process of their source material, which is gradually decomposed in an aqueous medium, releasing most of its components. These components include iron and more mobile elements such as bases and silicon, which leave the system through drainage water, and of which a small part may eventually recombine to form new less complex minerals such as kaolinite and oxides. Brazil reality however feature oxidationreduction oxidation reduction element P (P P2. P2 . sense profile Xray X ray XRF, XRF , (XRF) H2SO4, H2SO4 HSO H SO (H2SO4) dithionitecitratebicarbonate dithionite citrate bicarbonate DCB, DCB (DCB) oxalate diffraction vermiculite, vermiculite (vermiculite illite VHEs. VHEs VHEs) about 3540 35 40 35.4 4198 41 98 41.9 hematite segregation mobilization material medium silicon water (XRF H2SO (H2SO4 (DCB 354 3 4 35. 419 9 41. (H2SO

ABSTRACT The term toposequence, proposed to designate a lateral succession of soils on a slope due to the influence of topography, began to be used differently over time, distancing itself from its original concept. Here, we discuss how this concept has been used since its inception. We carried out bibliometric analyses of publications in the database available on the Web of Science since 1900. Three main approaches and related concepts, explicit or not, one at a regional scale and two others at a local scale were identified. From this analysis, we suggest: a) when the approach is regional, the term geomorphic surface or position in the landscape should be used to address the spatial distribution and genetic implications of soils at this scale; b) when dealing with series/sequences of soils on slopes for mapping purposes or discontinuous profiles that emphasize taxonomic classification, the term catena should be used; c) when the determining factor of the soil sequence is climatic, biotic, lithological, chronological, the corresponding term climo-, bio-, litho- or chronosequence should be used; d) when dealing with a lateral succession of horizons in the continuum on slopes, resulting from the influence of topography on soil formation, which may reflect the soil contribution to the model evolution, only in this case should the term toposequence be used, returning to its original concept. time Here inception 1900 concepts not identified analysis suggest b seriessequences series sequences classification c climatic biotic lithological chronological climo, climo , climo- bio, bio bio- litho d formation evolution 190 19 1

Polymers are options as antimicrobials for skin protection, antifouling surfaces, and fabrics. Here we analyzed the interaction of polymers based on poly(methacrylate) (PMMA) and poly((dimethylamino ethyl) methacrylate) (PDMAEMA) with model membranes and bacteria. We used the homopolymers PMMA, PDMAEMA, and the diblock copolymer(s) prepared with different PMMAm:PDMAEMAn ratios (m/n). The interactions of PDMAEMA and PMMAm-b-PDMAEMAn with large unilamellar vesicles (LUVs) prepared with phosphatidylcholine and phosphatidylglycerol at different pHs, were analyzed by nuclear magnetic resonance (NMR), dynamic light scattering, and zeta potential. These polymers promoted LUVs leakage of a fluorescent probe (5,6-carboxyfluorescein) localized exclusively in the internal aqueous compartment. Interestingly, all copolymers exhibit a bell-shaped pH dependence for the polymer-induced LUVs leakage. The interaction of the positively charged polymers and the pH effect was also demonstrated using giant unilamellar vesicles. These copolymers inhibited bacterial growth in the micromolar range and can be used to prevent bacterial growth on surfaces. protection surfaces fabrics polymethacrylate poly methacrylate poly(methacrylate PMMA (PMMA polydimethylamino dimethylamino ethyl (PDMAEMA bacteria copolymer s copolymer(s PMMAmPDMAEMAn PMMAm PDMAEMAn m/n. mn m/n . m n (m/n) PMMAmbPDMAEMAn b (LUVs pHs NMR, NMR , (NMR) scattering potential 5,6carboxyfluorescein 56carboxyfluorescein carboxyfluorescein 5,6 5 6 (5,6-carboxyfluorescein compartment Interestingly bellshaped bell shaped polymerinduced polymer induced (m/n (NMR 6carboxyfluorescein 56 5,

ABSTRACT. Phosphorus (P) is one of the most important elements used in fertilizing soils in tropical regions due to the low efficiency of phosphate fertilization. This work aimed to fractionate inorganic P (Pi) in tropical soils of different mineralogical compositions and to relate these fractions with their respective phosphate buffer capacity (PBC) indicators. The soils were characterized physically, chemically and mineralogically. Additionally, we evaluated the P concentration that remained in solution of soil after equilibrium was met; this was termed P remaining (P-rem). In general, the Pi fractions of soils did not correlate with the PBC indicators. The P-H2O fraction showed a negative correlation with the P-Al fraction. Ferric minerals did not influence P fixation. P-rem showed a strong correlation with the maximum P adsorption capacity, adsorption energy, and the amorphous and crystalline forms of Fe. The minerals of aluminum contributed the most to P fixation. P-rem was the best estimator of PBC. The soils with high, moderate and low rates of P fixation showed high amounts of the fractions P-Al, P-Ca, and P-Fe, respectively. The results showed that P fixation was influenced by the fractions of P in the soil, suggesting that the efficiency of phosphate fertilizers in tropical soils depends on the mineralogy of the clay fraction within those soils.

RESUMO O objetivo deste estudo foi comparar os aspectos da autoimagem e domínios da qualidade de vida em idosos praticantes e não praticantes de pilates na cidade de Curitiba, Paraná, Brasil. O estudo foi quantitativo, descritivo, comparativo e com delineamento transversal. A população da pesquisa foi formada por 93 idosos, após cálculo amostral com tamanho de efeito f (0,43). A amostra foi intencional e os participantes foram divididos em três grupos: grupo pilates, grupo hidroginástica e grupo não praticante. A pesquisa foi realizada por aplicação de questionário sociodemográfico, econômico, autoimagem, WHOQOL-BREF e OLD. A análise estatística foi feita por meio de avaliação comparativa com Anova, teste qui-quadrado e post hoc de Bonferroni. A comparação da autoimagem entre os grupos não mostrou nenhuma diferença significativa (X2=3,72, p=0,15), apesar de o número de participantes com baixa autoimagem ter sido alto. Nos domínios da qualidade de vidal, os grupos pilates e hidroginástica apresentaram maiores valores de média, em geral. No WHOQOL-OLD, foram identificadas diferenças significativas no domínio autonomia (F(2,90)= 7,46, p=0,001) entre os grupos pilates e hidroginástica, quando comparados ao grupo não praticantes. No domínio morte e morrer (F(2,90)=4,46, p=0,01), os maiores valores foram no grupo não praticantes em relação ao grupo pilates. Os resultados sugerem que a prática de atividade física pode beneficiar os idosos na questão da qualidade de vida, porém não isoladamente.

ABSTRACT This quantitative and descriptive cross-sectional study compares the self-image aspects and quality of life domains in older adults practitioners and non-practitioners of pilates in the city of Curitiba, Paraná. After sample calculation with effect size f (0.43), an intentional sampling was conducted, resulting in a study population of 93 older adults divided into three groups: pilates group, water aerobics group, and non-practicing group. Data was collected using a sociodemographic, economic, and self-image questionnaire, and the instruments WHOQOL-BREF and OLD. Statistical comparative analysis was performed using Anova, Chi-square test, and Bonferroni post hoc. Although the number of participants with low self-image was high, the comparison of this variable between groups showed no significant difference (X²= 3.72, p=0.15). Regarding the quality of life domains, the pilates and water aerobics groups had higher average values, in general. The WHOQOL-OLD instruments identified significant differences in the Autonomy domain (F(2.90)= 7.46, p=0.001) between the pilates and water aerobics groups when compared to the non-practicing group. As for the Death and Dying domain (F(2.90)= 4.46, p=0.01), the non-practicing group showed the highest values in relation to the pilates group. Results suggest that physical exercise can benefit older adults regarding quality of life, but not in isolation.

RESUMEN El objetivo de este estudio fue comparar los aspectos de autoimagen y los dominios de calidad de vida entre ancianos practicantes y no practicantes de pilates en la ciudad de Curitiba, Paraná, Brasil. Este es un estudio cuantitativo, descriptivo, comparativo y con diseño transversal. La población de investigación estuvo constituida por 93 ancianos después del cálculo de la muestra con tamaño del efecto f (0,43). La muestra fue intencional, y se dividieron a los participantes en tres grupos: grupo de pilates, grupo de hidrogimnasia y grupo de no practicantes. Se les aplicó un cuestionario sociodemográfico, económico, de autoimagen, WHOQOL-BREF y WHOQOL-OLD. El análisis estadístico se realizó mediante evaluación comparativa utilizando Anova, prueba de chi-cuadrado y prueba de post hoc de Bonferroni. La comparación de la autoimagen entre los grupos no mostró ninguna diferencia significativa (X2=3,72, p=0,15), aunque el número de participantes con baja autoimagen fue alto. En los dominios de la calidad de vida, los grupos de pilates y de hidrogimnasia presentaron, por lo general, una media de valores más alta. En WHOQOL-OLD, hubo diferencias significativas en el dominio de autonomía (F(2,90)= 7,46, p=0,001) entre los grupos de pilates y de hidrogimnasia en comparación con el grupo de no practicantes. En el dominio muerte y morir (F(2,90)=4,46, p=0,01), los valores más altos se encontraron en el grupo de no practicantes en comparación con el grupo de pilates. Los resultados evidencian que la práctica de actividad física puede beneficiar a las personas mayores en términos de calidad de vida, pero no de forma aislada.

O desenvolvimento adequado de algumas características psicológicas, como a percepção de autoconceito e autoeficácia pode ser determinante para o sucesso do indivíduo em diversos contextos da sua vida. É possível que o envolvimento em algumas práticas corporais apresente relação com tais percepções em estudantes adolescentes. Nessa perspectiva, esse estudo objetivou verificar a relação entre a prática esportiva, prática de atividade física e outras atividades corporais, com o autoconceito e a autoeficácia de estudantes. A amostra foi composta por 330 estudantes de ensino médio, inseridos ou não em práticas corporais, que responderam à Escala Multidimensional de Autoconceito - AF5, além da Escala de Autoeficácia Geral Percebida e Escala de Autoeficácia Acadêmica. A relação entre a inserção em projetos de atividades corporais e valores de autoconceito e autoeficácia foi verificada a partir da análise de regressão linear múltipla. Foi observada relação entre a participação de projetos esportivos, outras práticas corporais e o nível de atividade física com valores de autoeficácia e autoconceito, em que as práticas explicaram entre 0,28 e 0,38 (p<0,05) desses fatores, no modelo ajustado por sexo, idade e nível socioeconômico. Conclui-se que houve associação entre a participação em projetos de práticas corporais e alguns domínios do autoconceito e autoeficácia.

The development of some psychological characteristics, such as the perception of self-concept and self-efficacy may be determinant for the success of the individual in various contexts of his life. Possibly involvement in some bodily practices may be related to these psychological perceptions in adolescent students. Therefore, this study aimed to verify the relationship between sports practice, physical activity practice and other corporal practices, with self-concept and the self-efficacy among high school students. The sample consisted of 330 high school students, involved or not in corporal practices, who responded to the Multidimensional Self-Concept Scale AF5, the Perceived General Self-Efficacy Scale and Academic Self-Efficacy Scale. The relationship between the participation in projects of corporal activities and the values of self-concept and self-efficacy was verified from the analysis of multiple linear regression. It was observed a relationship between the participation of sports projects, other corporal practices and the level of physical activity with scores of self-efficacy and self-concept, the practices explained between 0.28 and 0.38 (p<0.05) of these factors, in the model adjusted by sex, age and socioeconomic level. It was concluded that there was an association between participation in projects of bodily practices and some domains of self-concept and self-efficacy.

RESUMO Com o crescimento constante da população idosa torna-se necessário a discussão sobre os aspectos relacionados a aptidão funcional, uma vez que essa pode interferir no envelhecimento saudável. O objetivo desse estudo foi verificar a associação entre aptidão funcional e qualidade de vida em 1737 idosas participantes de um programa de atividade física de Curitiba, Paraná, Brasil. Foi aplicado o Questionário sociodemográfico, a versão curta do International Physical Activity Questionnaire (IPAQ), e os questionários de qualidade de vida WHOQOL-BREF e WHOQOL-OLD. Também foi aplicado a bateria de testes de aptidão funcional “Senior Fitness Test” (SFT). Foi utilizado a análise descritiva das variáveis e o Modelo de regressão logística ordinal para verificar as associações entre as variáveis de aptidão funcional e os domínios da qualidade de vida por meio do software STATA 13.0 MP, com significância de p<0,05. Os resultados indicaram que idosas com aptidão funcional adequada apresentaram mais chances de estarem no tercil mais alto da qualidade de vida e domínios na avaliação do WHOQOL-BREF (variando entre 1,21 a 1,49) e WHOQOL-OLD (variando de 1,18 até 1,60). Os resultados apontaram que uma melhor aptidão funcional apresenta-se positivamente associada a percepção positiva da qualidade de vida e de seus domínios em idosas.

ABSTRACT With the constant increase of the elderly population becomes necessary the discussion about the aspects related to the functional fitness, once this can interfere in the healthy aging. The objective of this paper was verifying the association of functional fitness with a quality of life in 1737 elderly women participating in a program of physical activity in Curitiba, Paraná, Brazil; was applied the Sociodemographic Questionnaire, the short version of International Physical Activity Questionnaire (IPAQ), and the questionnaires of quality of life WHOQOL-BREF and OLD. Also, was applied the battery of tests of functional fitness Senior Fitness Test. Descriptive analysis of the variables and the ordinal logistic regression model was used to verify the associations between the variables of functional fitness and the domains of quality of life by means of software STATA 13.0 MP, with the significance of p<0,05. The results indicated that elderly with adequate functional fitness showed more likely to be in the higher third of quality of life variables and their domains in the assessment of WHOQOL-BREF (ranging between 1,21 to 1,49) and WHOQOL-OLD (ranging between 1,18 to 1,49). The results pointed out that better functional fitness presents is positively associated with a perception positive of quality of life and their domains in the elderly women.

RESUMO O objetivo desse estudo foi verificar a associação de fatores psicológicos e de práticas corporais com o desempenho acadêmico de estudantes do ensino médio. Uma amostra de 330 estudantes participou do estudo, sendo 167 meninas e 163 meninos. Por meio de instrumentos de escala Likert foram coletadas informações sobre o autoconceito, autoeficácia geral e acadêmica, também foi contabilizado o tempo em atividade física moderada a vigorosa, bem como a participação em diversos tipos de práticas corporais, como esportes, danças, lutas, artes cênicas e exercícios físicos sistematizados. Já o desempenho acadêmico foi referido com base no conceito obtido pelo estudante nas disciplinas do núcleo comum de aprendizagem. A análise de regressão linear foi utilizada para verificar a associação das variáveis independentes com o desempenho acadêmico. Foi observado que o modelo de regressão ajustado explicou entre 7% e 36% da variância do desempenho acadêmico, sendo que o Autoconceito pode explicar o desempenho acadêmico de seis das doze disciplinas e ainda a média dos conceitos, com valores de Beta entre 0,13 (p=0,02) para Sociologia e 0,28 (p<0,01) para Matemática. A autoeficácia acadêmica explicou o desempenho de onze disciplinas, além da média dos conceitos, com valores de Beta entre 0,21 (p<0,01) para Educação Física e Filosofia e 0,44 (p<0,01) para Biologia. Já a participação em projetos relacionados a práticas corporais pode explicar o desempenho acadêmico de seis disciplinas e ainda a média dos conceitos, com valores de Beta entre 0,14 (p=0,02) para Sociologia e 0,31 (p<0,01) para Artes. Percebeu-se então, que as variáveis psicológicas estudadas e a participação em projetos de práticas corporais em contraturno foram associadas com o desempenho acadêmico em diversas disciplinas escolares e na média dos conceitos.

ABSTRACT The objective of this study was to verify the association of psychological factors and body practices with the academic performance of high school students. A sample of 330 students participated, made up of 167 girls and 163 boys. Likert scale instruments were used for collecting information on self-concept, and on general and academic self-efficacy. Time spent on moderate to vigorous physical activity was recorded, and so was participation in several types of body practices, such as sports, dances, martial arts, performing arts, and systematic physical exercises. Academic achievement was referred to from the students' grades on regular subjects. Linear regression analysis was used for verifying the association of independent variables with academic performance. The adjusted regression model explains between 7% and 36% of academic performance variance, whereas Self-Concept explains academic performance on six of the twelve subjects, and the mean of the grades, with Beta values between 0.13 (p = 0.02) for Sociology and 0.28 (p <0.01) for Mathematics. Academic self-efficacy explained performance on eleven subjects and the mean of the grades, with Beta values between 0.21 (p <0.01) for Physical Education and Philosophy, and 0.44 (p <0.01) for Biology. Participation in extracurricular activities involving body practices explained academic performance on six subjects and the mean of the grades, with Beta values between 0.14 (p = 0.02) for Sociology and 0.31 (p <0.01) for Arts. The studied psychological variables and participation in projects concerning body practices during extracurricular activities correlated with academic achievement as to several school subjects, and with the mean of the grades.

Abstract Background: South American rattlesnakes are represented in Brazil by a single species, Crotalus durissus, which has public health importance due to the severity of its envenomation and to its wide geographical distribution. The species is subdivided into several subspecies, but the current classification is controversial. In Brazil, the venoms of C. d. terrificus and C. d. collilineatus are used for hyperimmunization of horses for antivenom production, even though the distinction of these two subspecies are mostly by their geographical distribution. In this context, we described a comparative compositional and functional characterization of individual C. d. collilineatus and C. d. terrificus venoms from three Brazilian states. Methods: We compared the compositional patterns of C. d. terrificus and C. d. collilineatus individual venoms by 1-DE and RP-HPLC. For functional analyzes, the enzymatic activities of PLA2, LAAO, and coagulant activity were evaluated. Finally, the immunorecognition of venom toxins by the crotalic antivenom produced at Butantan Institute was evaluated using Western blotting. Results: The protein profile of individual venoms from C. d. collilineatus and C. d. terrificus showed a comparable overall composition, despite some intraspecific variation, especially regarding crotamine and LAAO. Interestingly, HPLC analysis showed a geographic pattern concerning PLA2. In addition, a remarkable intraspecific variation was also observed in PLA2, LAAO and coagulant activities. The immunorecognition pattern of individual venoms from C. d. collilineatus and C. d. terrificus by crotalic antivenom produced at Butantan Institute was similar. Conclusions: The results highlighted the individual variability among the venoms of C. durissus ssp. specimens. Importantly, our data point to a geographical variation of C. durissus ssp. venom profile, regardless of the subspecies, as evidenced by PLA2 isoforms complexity, which may explain the increase in venom neurotoxicity from Northeastern through Southern Brazil reported for the species.

Resumo A adolescência é favorável para implementar intervenções que incentivem estilos de vida saudável, especialmente se for relacionada ao esporte. Objetivou-se comparar o nível de atividade física, aptidão física e a percepção de qualidade de vida dos adolescentes que praticam e não praticam esporte no contraturno escolar. A amostra foi composta por 374 adolescentes, 198 meninos e 176 meninas, com média de idade de 16,35 ± 0,65 e 16,19 ± 0,67 anos. O questionário QAFA foi utilizado para avaliar o nível de atividade física e o Fitnessgram para a aptidão física. O KIDSCREEN-52 foi utilizado para avaliar a percepção da qualidade de vida. A Anova one-way foi realizado para as comparações (p> 0,05). Adolescentes do sexo masculino e feminino não praticantes apresentaram menores níveis de atividade física e aptidão física quando comparados aos praticantes de programas esportivos e outros tipos de exercícios físicos regulares (p <0,01). Meninos e meninas praticantes de esportes no contraturno apresentaram maiores escores para percepção de qualidade de vida (p ≤ 0,01). Os praticantes de esporte no contraturno possuem maiores níveis de atividade física e melhor percepção de qualidade de vida. Quanto à aptidão física, os componentes foram melhores para os praticantes de esporte e outras para praticantes de outra modalidade de exercício físico.

Abstract Adolescence is conducive to implementing interventions that encourage healthy lifestyles, especially when there is involvement with sports. The aim of this study was to compare physical activity, physical fitness and quality of life perception of adolescents who practice and do not practice after-school sports. The sample consisted of 374 adolescents, 198 boys and 176 girls, with mean age of 16.35 ± 0.65 and 16.19 ± 0.67 years. The QAFA questionnaire was used to evaluate the level of physical activity and the Fitnessgram was used to evaluate physical fitness. The KIDSCREEN-52 was used to evaluate quality of life perception. One-way ANOVA was conducted for comparisons (p>0.05). Boys and girls who did not practice sports presented lower levels of physical activity and physical fitness compared to those engaged in after-school sports and other type of regular physical exercise (p<0,01). Boys and girls engaged in after-school sports also presented higher scores for quality of life perception (p ≤ 0.01). Adolescents engaged in afterschool sports showed higher levels of physical activity and better quality of life perception. Physical fitness components were better for adolescents engaged in after-school sports and for those engaged in other physical exercise modalities.

Abstract The objective of this study was to evaluate the potentialities and limitations of the agricultural use of representative classes of semi-arid regions of the state of Bahia, based on the pedological and evaluation of their soil characteristics. Five areas were selected where trenches were opened to collect samples for the analyses: Eutric Haplustept which presents vulnerability to physical and chemical degradation due to poor drainage with risks of erosion, waterlogging, salinization and compaction but having good natural fertility; Abrupt Kandiustalf with high vulnerability to physical degradation due to the presence of gravel and pebbles which may limit the development of deep rooting plants and mechanization but also with good natural fertility; Typic quartzipsaments and Typic Eutrustalf with no limitations related to drainage as low risk of compaction but featuring limitation of low moisture-holding capacity and nutrients; and Arenic Haplustulf wose characteristics are high vulnerability to degradation due to the drainage limitation related to the Btx horizon cementing in addition to low natural fertility and therefore is not recommended to agricultural use. However, in general, they feature no serious impediments for agricultural use. The amounts of OM is low in all soils but the use of management systems aiming at their accumulation and maintenance in appropriate levels will contribute to the CEC increase as well as to improve the chemical and physical properties.

Resumo Introdução O processo de envelhecimento ocasiona redução da função física podendo o indivíduo ter uma diminuição na percepção da qualidade de vida. Sendo assim, realizar atividade física regular pode ser um fator favorável a uma melhor percepção de qualidade de vida. Objetivo comparar a percepção da qualidade de vida em idosas praticantes e não praticantes do método Pilates. Método as idosas foram separadas em grupo Pilates (n = 60), ginástica (n = 63) e não praticantes de atividades físicas regulares (n = 62) e pelas faixas etárias de 60 a 64,9 anos e 70 a 74,9 anos. A percepção da qualidade de vida foi estimada pelo questionário WHOQOL-OLD e WHOQOL-BREF. A distribuição dos dados foi verificada com o teste de Shapiro-Wilk, além disso, foi utilizado o teste de Kruskal-Wallis com post hoc de Mann-Whitney e correção de Bonferroni. Resultados para a faixa etária de 60 a 64,9 anos avaliada pelo questionário WHOQOL-OLD, as idosas que não praticavam atividade física regular apresentaram uma melhor percepção no domínio de participação social do que o grupo da ginástica. Para a faixa etária de 70 a 74,9 anos, avaliada pelo mesmo questionário, o grupo de Pilates apresentou melhores percepções na maioria dos domínios de qualidade de vida. Conclusão o grupo das idosas praticantes do Método Pilates apresentou os maiores escores na maioria dos domínios de qualidade de vida para a faixa etária de 70 a 74,9 anos.

Abstract Background The aging process causes a reduction of the physical function, allowing the individual to have a decrease in the perception of the quality of life. Therefore, regular physical activity can be a favorable factor for a better perception of quality of life. Objective The aim of this study was to compare the quality-of-life perception of elderly women practitioners and non-practitioners of the Pilates’ method. Method divided into three exercise type groups and two age groups: 60-64.9 and 70-74.9 years. The exercise type groups were as follows: Pilates’ method practitioners (n=60), gymnastics practitioners (n=63), and non-practitioners of regular physical activity (n=62). The WHOQOL-OLD and WHOQOL-BREF questionnaires were applied to evaluate the quality-of-life perception. Statistics: The Shapiro-Wilk test verified the data distribution and comparative analysis was conducted using the Kruskal-Wallis test with Mann-Whitney Post-Hoc and Bonferroni correction. All analyses were processed using the SPSS software at 5% significance level (p<0.05). Results For 60-64.9-year-old group assessed by the WHOQOL-OLD questionnaire, the non-practitioners of regular physical activity showed better perception in the social participation domain than that of the gymnastic practitioners. For 70-74.9-year-old group assessed by the same instrument, the Pilates’ method practitioners showed the best perception in most of the quality-of-life domains. Conclusion Elderly women practitioners of the Pilates’ method obtained the highest scores in most of the quality-of-life domains for the 70-74.9-year-old group.

El objetivo del estudio fue revisar sistemáticamente las investigaciones que analizaron la relación del autoconcepto con el rendimiento académico de adolescentes de la enseñanza media, así como verificar qué variables y contextos dentro de la escuela fueron abordados en conjunto al autoconcepto, para explicar mejor esta relación. La revisión incluyó estudios publicados en los últimos diez años en las bases electrónicas de trabajos científicos: ERIC/Thesaurus, MEDLINE/Pubmed, SportDiscus, SciELO y Web of Science. Se utilizaron los descriptores referentes al autoconcepto (self, self-concept y self-psychology) y los descriptores relacionados con el rendimiento académico, en que también se consideró la capacidad académica percibida (academic achievement, underachievement, educational achievement, perception of competence, competence perception, self-efficacy). Diez estudios se incluyeron en la revisión. La relación entre autoconcepto y desempeño académico se mostró consistente y se confirmó en nueve de los diez trabajos. Otras variables se presentaron importantes en la explicación del rendimiento académico, entre las cuales la motivación académica, la práctica de actividades extracurriculares, la auto-eficacia académica y la participación de los familiares.

O objetivo do estudo foi revisar sistematicamente as pesquisas que analisaram a relação do autoconceito com o rendimento acadêmico de adolescentes do ensino médio, bem como verificar quais variáveis e contextos dentro da escola foram abordados em conjunto ao autoconceito, para melhor explicar essa relação. A revisão incluiu estudos publicados nos últimos 10 anos nas bases eletrônicas de trabalhos científicos: ERIC/Thesaurus, MEDLINE/Pubmed, SportDiscus, SciELO e Web of Science. Foram utilizados os descritores caracterizando componentes do autoconceito (self, self-concept e self-psychology) com os descritores relacionados ao rendimento acadêmico, em que também se considerou a capacidade acadêmica percebida (academic achievement, underachievement, educational achievement, perception of competence, competence perception, self-efficacy). Dez estudos foram incluídos na revisão. A relação entre autoconceito e desempenho acadêmico mostrou-se consistente e se confirmou em nove dos 10 trabalhos. Outras variáveis também se apresentaram importantes na explicação do desfecho do rendimento acadêmico, tais como a motivação acadêmica, a prática de atividades extracurriculares, a autoeficácia acadêmica e o envolvimento dos pais.

The aim of the study was to systematically review the studies that analyzed the relationship between self-concept and academic achievement in high school students, as well as to verify which variables and contexts within the school were approached together with self-concept, to better explain this relationship. The review included studies published in the last ten years in the scientific electronic databases: ERIC/Thesaurus, MEDLINE/Pubmed, SportDiscus, SciELO and Web of Science. The descriptors that characterized the components of self-concept used were those of self, self-concept and self-psychology, and the descriptors related to academic achievement, academic achievement, underachievement, educational achievement, perception of competence, competence perception and self-efficacy. Ten studies were included in the review. The relationship between self-concept and academic performance was consistent and confirmed in nine of the ten papers. Other variables that were important in explaining the academic achievement were academic motivation, the practice of extracurricular activities, academic self-efficacy and parental involvement.

Resumo O objetivo do presente estudo foi verificar a associação entre dependência do exercício físico (DEF) e percepção da qualidade de vida relacionada à saúde (QVRS) em atletas do basquetebol master brasileiro. A amostra foi composta por 410 atletas do sexo masculino. QVRS foi avaliada por meio do Medical Outcomes Study (SF-36). DEF foi avaliada com a Negative Addiction Scale. A Razão de Prevalência (RP) foi usada como medida de associação. Os resultados revelaram a associação negativa da DEF e QVRS, baixos níveis de DEF foram associados a oito domínios da QVRS (RP entre 2,88 e 1,45) e a média DEF a seis domínios da QVRS (RP entre 1,80 e 1,31). Em conclusão, a DEF pode diminuir os níveis de percepção da QVRS dos atletas, tanto em aspectos físicos quanto mentais.

Abstract The current study aimed to investigate the association between physical exercise dependence (PED) and health-related quality of life (HRQoL) perception in Brazilian master basketball athletes. The sample consisted of 410 male athletes. HRQoL was assessed using the Medical Outcomes Study (SF-36). DEF was assessed with the Negative Addiction Scale. Prevalence Ratio (PR) was used as a measure of association. The results exposed a negative association of DEF and HRQOL, and low DEF levels were associated with eight HRQoL domains (PR between 2.88 and 1.45), and the medium DEF with six HRQoL domains (PE between 1.80 and 1.31). In conclusion, DEF can decrease athletes HRQoL perception levels, both physical and mental aspects.

Resumen El objetivo de este estudio fue investigar la relación entre la dependencia del ejercicio físico (DEF) y la percepción de la calidad de vida relacionada con la salud (CVRS) en los jugadores de baloncesto veteranos de Brasil. La muestra estaba compuesta por 410 jugadores masculinos. La CVRS se evaluó mediante el Medical Outcomes Study (SF-36). La DEF se evaluó con la Negative Addiction Scale. La razón de prevalencia (RP) se utilizó como una medida de asociación. Los resultados revelaron una relación negativa de la DEF y la CVRS, y los bajos niveles de DEF se relacionaron con ocho dominios de la CVRS (RP entre 2,88 y 1,45) y la media de DEF con seis dominios de la CVRS (RP entre 1,80 y 1,31). En definitiva, la DEF puede disminuir los niveles de percepción de la CVRS de los jugadores, tanto en los aspectos físicos como en los mentales.

Resumo Objetivo: Investigar a associação entre o índice de massa corporal (IMC) e níveis de aptidão funcional de idosas vinculadas ao programa Idoso em Movimento da Cidade de Curitiba, PR, Brasil. Métodos: O estudo caracteriza-se como correlacional, do tipo transversal. A amostra foi constituída por 1.806 idosas participantes do programa Idoso em Mo vimento. Foram utilizados como instrumentos o IPAQ versão curta para avaliar a participação em atividades físicas, o peso corporal (kg) e a estatura (m) foram mensurados para o cálculo do IMC (kg/m²) e os testes motores propostos no Senior Fitness Test foram utilizados para avaliar a aptidão funcional das idosas. Para análise dos dados foi utilizado a estatística descritiva, o teste de qui-quadrado e a regressão logística binária. Resultados: Foram identificados 24,0% da amostra como eutrófico, 42,9% com sobrepeso e 33,1% com obesidade. As idosas classificadas com sobrepeso e obesidade apresentaram menores escores de aptidão funcional, com base na classificação de aptidão funcional de Rikli e Jones, já as idosas classificadas como eutróficas apresentaram níveis dentro da normalidade. As idosas com obesidade tiveram maior chance de estar com a aptidão funcional baixa nos testes: Andar 6 minutos, Sentar e levantar, Sentar e Alcançar, Alcançar atrás das costas e Sentado e caminhar. Conclusão: O estudo indicou uma associação entre IMC e a aptidão funcional em mulheres idosas participantes do Programa, onde a maior proporção de idosas classificadas com obesidade apresentou aptidão baixa em todos os testes.

Abstract Objective: to investigate the association between body mass index (BMI) and functional fitness levels linked to the Elderly in Movement Program of the city of Curitiba, in the state of Paraná, Brazil. Methods: The study is characterized as correlational and cross-sectional. The sample consisted of 1,806 elderly female participants of the Elderly in Movement Program. The short version of the IPAQ was used to evaluate participation in physical activities; body weight (kg) and height (m) were measured to calculate BMI (kg/m²), while the motor tests proposed in the Senior Fitness Test were used to evaluate the functional fitness of the elderly women. Descriptive statistics, the chi-squared test and binary logistic regression were used for data analysis. Results: The results showed that 24.0% of the sample exhibited eutrophic nutritional status, 42.9% were overweight and 33.1% were obese. The elderly women classified as overweight and obese had lower functional fitness scores, based on the rating of Rikli and Jones, while the elderly women classified as eutrophic exhibited levels within the normal range. Obese elderly women were more likely to have low scores in the following functional fitness tests: Walk for 6 minutes, Chair Stand, Chair Sit and Reach, Back Scratch and 8-Foot Up and Go. Conclusion: The study indicated an association between, BMI and functional fitness in the elderly women participating in the program, where the majority of elderly women classified as obese exhibited low fitness in all tests.