bluuebunny/crossref_metadata_2025_split huggingface dataset:
Efeitos da composição corporal na capacidade aeróbia de animais submetidos ao exercício de natação
Authors: Castoldi Robson Chacon , Coladello Leandro Fernandes , Koike Tatiana Emy , Ozaki Guilherme Akio Tamura , Magalhães Alan José Barbosa , Papoti Marcelo , Camargo Filho Regina Celi Trindade , Carmargo Filho José Carlos 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n2p136 The aim of this study was to verify the influence of body composition on the CAER of animals submitted to different types of physical training. Twenty-three Wistar rats were divided into groups according to the training protocol: control (CTLE); aerobic training (TAE); anaerobic training (TAN); and concurrent physical training (TCc). The critical load test (CC) was carried out for determining the anaerobic threshold at the beginning and end of the training period. TAE was composed of swimming exercise with intensity corresponding to 70% of the anaerobic threshold; TAN was composed of water jumps with overload of 50% of the body weight of each animal; and TCc was composed of a combination of aerobic and anaerobic protocols described above. After four weeks of training, the weight of epididymal adipose tissue and soleus, plantar and gastrocnemius muscles was collected and measured. Dispersion analysis was used to draw graphics and analysis of the simple linear regression model was performed to identify the influence of each variable on CAER. Body Fat demonstrated positive influence of 5% on the relationship with the Anaerobic Threshold. Soleus and gastrocnemius muscles showed negative influence of 13.1% and 37.0%, respectively. The plantaris muscle showed no influence on the Anaerobic Threshold. Body composition influenced the CAER of the animals analyzed. Moreover, it was verified that body fat favored floatability, while higher muscle mass impaired it.
Relationship Between Jumping Ability, Agility and Sprint Performance of Elite Young Basketball Players: A Field-Test Approach
Authors: Asadi Abbas 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n2p177 The purpose of this study was to determine the relationships between sprint, agility and jump performance of elite young basketball players. Sixteen elite national level young male basketball players participated in this study. The jumping ability of each player was determined using countermovement jump (CMJ), and broad long jump (BLJ). The agility T test (TT) and Illinois agility test (IAT) were assessed to determine the agility, and 20-m sprint time was also measured to determine sprint performance. The results of Pearson Product Moment Correlation analysis indicated moderate correlation between training age and IAT (r = -0.57; p = 0.021). Strong correlations were found between CMJ and BLJ (r = 0.71; p = 0.002), and between TT and IAT (r = 0.70; p = 0.002). Similarly, 20-m sprint time was strong correlated with CMJ (r = -0.61; p = 0.011), BLJ (r = -0.76; p = 0.001), TT (r = 0.77; p = 0.001), and IAT (r = 0.68; p = 0.003). In addition, CMJ was strongly correlated with TT (r = -0.60; p = 0.013), and IAT (r = -0.64; p = 0.007), and also strong correlation between BLJ with TT (r = -0.85; p = 0.001) and IAT (r = -0.76; p = 0.001). The findings of the present study indicated significant correlation between sprint and agility, jumping ability and sprint performance and between jumping ability and agility performance in basketball players. Therefore, the results suggest that sprint, agility and jumping ability share common physiological and biomechanical determinants.
Comparação entre dois modelos de treinamento sobre o gasto energético de repouso e a composição corporal de adolescentes com obesidade
Authors: Oliveira Bruno Affonso Parenti de , Rossi Fabrício Eduardo , Buonani Camila , Diniz Tiego Aparecido , Monteiro Paula Alves , Antunes Bárbara De Mello , Fernandes Rômulo Araújo , Freitas Júnior Ismael Forte 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n3p268 Different types of physical activity programs have been used with the purpose of improving body composition and increasing resting energy expenditure (REE) in obese adolescents. The aim of the present study was to compare the effects of two training models on REE and body composition in this population. The study included 20 obese male adolescents, who were randomly assigned to follow two training models: strength training (n=8, age=13,4±1.0) and functional training (n=12, age= 13.0±1.1). Body composition variables were estimated by dual-energy X-ray absorptiometry. REE was assessed by indirect calorimetry using the QUARK-PFT equipment (COSMED, Rome, Italy). The training protocol consisted of 30 minutes of aerobic training followed by 30 minutes of strength training (ST) or functional training (FT), both with a duration of 20 weeks. There were no significant differences between the two training models with regard to body composition (fat mass, FT= -7.6±5.5% vs. ST= -8.9±6.2%; p=0.620), (lean body mass, FT= 9.0±5.3% vs. ST= 6.8±6.7%; p=0.431) and to REE (FT= 19.6±15.3% vs. ST= 10.7±24.5%; p=0.331). Moreover, lean body mass (p=0.01) and fat mass (0.01) had an influence on REE. No differences were observed between the two training models, but both were effective in improving body composition and increasing REE in obese adolescents. Furthermore, the present study showed the importance of systematic physical training, since lean body mass and fat mass contributed to the increase in REE after the training period.
O treinamento mental gera efeito positivo na ansiedade competitiva de jovens nadadores?
Authors: Fortes Leonardo De Sousa , Lira Hugo Augusto Alvares da Silva , Lima Raphaella Christine Ribeiro de , Almeida Sebastião Sousa , Ferreira Maria Elisa Caputo 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n3p353 The aim of this research was to analyze the effect of mental training on the competitive anxiety of young swimmers. The sample consisted of 35 swimmers aged 15 - 17 years (M = 15.93; SD = 0.98), randomly divided into two groups: experimental group (EG, n = 17) and control group (CG, n = 18). The study lasted eight weeks. Both groups performed the same physical/technical training planning. CG watched advertisement videos while EG performed mental training. The Competitive State Anxiety Inventory (CSAI-2R) was administered to all athletes before the start of the season and the last week of the “taper” mesocycle. The findings revealed that the “cognitive anxiety” and “somatic anxiety” subscale scores attenuated from pre-test to post-test in EG (p = 0.01) and remained stable in CG (p = 0.15). The results showed that the “self-confidence” subscale score increased from pre-test to post-test in EG (p = 0.01) and remained stable in CG (p = 0.26). Significant difference was found in “cognitive anxiety” (p = 0.01), “somatic anxiety” (p = 0.01) and “self-confidence” (p = 0.01) subscales across EG and CG after 8 weeks. It was concluded that mental training was effective in reducing anxiety (cognitive and somatic) and increasing the self-confidence of young swimmers.
Impacto dos motivos de adesão na regulação da motivação de atletas máster de natação na temporada
Authors: Moreira Caio Rosas , Nascimento Junior José Roberto Andrade do , Mizoguchi Marcus Vinicius , Oliveira Daniel Vicentini de , Vieira Lenamar Fiorese 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n4p429 There are several reasons that lead a person to start and stay in a sport. In this case, reasons have fundamental importance for athlete motivation, once the higher the motivation, the more constant the search for better performance and continuity in sport. This study investigated the impact of adhesion reasons to the practice on the motivation of master swimmers. Survey participants were 48 master swimming athletes over a year of competition. Data collection was conducted with the Diagnostic Instrument of Adhesion of Swimming Practice and Sport Motivation Scale. For data analysis, Shapiro-Wilk, Friedman, Wilcoxon, Spearman correlation and Uni/Multivariate Regression were conducted (p<0.05). Results showed that adhesion reasons throughout the season remained the same (Well-Being and Prevention); identification extrinsic motivation increased over the year (p<0.05). Social Recognition reason had significant impact (p<0.05) on the External Regulation extrinsic motivation over the season, whereas Challenge, Performance and Social Recognition had an effect (p<0.05) on the self-determined motivation during the sporting year. It was concluded that for master athletes, self-determination is influenced by pursuit of performance and social relationship from the middle to the end of the competitive year. In addition, external reasons are critical throughout the season, especially at the beginning of the competition year.
Prevalência de níveis suficientes de atividade física em adolescentes: comparação entre a medida obtida de um questionário simplificado e a de um detalhado
Authors: Farias Júnior José Cazuza de , Barbosa Arthur Oliveira , Mendes Jonathan Karl Feitosa , Mendonça Gerfeson 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n4p450 This study aimed was to compare the prevalence of sufficient levels of physical activity produced by a measure of the simplified questionnaire compared to a detailed questionnaire and analyze the concordances between these measures in adolescents. This is cross-sectional study with 2,859 adolescents high school students (57.8% female, 14-19 years old), from the city of João Pessoa (PB), Northeast, Brazil. Physical activity was measured by two questionnaires: a simplified instrument, containing a single question and a detailed questionnaire. Adolescents engaging in physical activity ≥300 minutes/week were classified as sufficiently physically active. Agreement between the two measures was evaluated by the Kappa statistic (k) and sensitivity and specificity measures using the results of the detailed questionnaire as reference. The prevalence of adequate levels of physical activity was lower in the simplified questionnaire (20.1%; 95%CI: 18.6-21.6) compared to the detailed questionnaire (50.2%; 95%CI: 48.4-52.7). Inter-questionnaire agreement was slight (almost all with k<0.30). Sensitivity of the simplified questionnaire was low (from 26.4%, 95%CI: 22.9-30.0; to 40.9%, 95%CI: 37.0-45.0), and specificity was high (from 92.3%, 95%CI: 86.9-96.0; to 94.3%, 95%CI: 92.0-96.1). The agreement between the prevalence of sufficient levels of physical activity measured by a simplified and detailed questionnaire was low. Simplified questionnaires should be used with caution because they can underestimate the prevalence of levels of physical activity in adolescents.
Associação do status social subjetivo e indicadores sociodemográficos em atletas
Authors: Freitas Kamyla Thais Dias de , Ferrari Elisa Pinheiro , Vieira Mariluce Poerschke , Silva Walan Robert da , Carvalho Helton Pereira de , Cardoso Fernando Luiz 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n5p591 Subjective social status comprises the perception of individuals about their social status. The aim of this study was to investigate the relationship between subjective social status and sociodemographic indicators (age, educational level, marital status and economic level) in athletes from Santa Catharina. A total of 593 athletes of both sexes and mean age of 21.18 (± 5.58) years, 371 men, randomly selected, practitioners of individual and collective sport modalities, federated in clubs in the western region of Santa Catarina participated in the study. Social status perception was assessed using the MacArthur scale version for young people adapted to the sports context. For the association between perceived status and sociodemographic indicators, the Chi-square and Multinomial Logistic Regression tests were used, stratified by gender and adjusted for age variables, educational level, marital status and socioeconomic status. Dissatisfaction with status was found in 85% of the sample. Moreover, 46.9% of participants perceived themselves with low family status and 46% perceived themselves with intermediate status in their clubs. The association between groups showed statistically significant differences according to sex, age, educational level and marital status. The association between sociodemographic variables and status according to sex indicated that younger men, with less education, and single were more likely to be dissatisfied with their status. There is need for greater attention by health professionals regarding younger male athletes, with lower education and single regarding their status perception.
Confiabilidade das medidas de demanda física, fisiológica e tática em pequenos jogos com superioridade e igualdade numérica no futebol
Authors: Figueiredo Lucas Savassi , Bredt Sarah Da Glória Teles , Praça Gibson Moreira , Paula Leandro Vinhas de , Silva Patrick Costa Ribeiro , Andrade André Gustavo Pereira de , Greco Pablo Juan , Chagas Mauro Heleno 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n5p602 The aim of this study was to investigate the physical, physiological (HR) and tactical demands of small-sided soccer games (SSG) with numerical equality (3x3) and numerical superiority (4x3). Eighteen male players of a soccer team played against each other both types of SSG, both played as two 4-minute bouts interspersed with 4-minute rest. Physical (distances, velocities and accelerations) and HR demands were recorded by a GPS system (15hz) and a heart rate monitor during SSG. The individual tactical behaviors proposed by the System of Tactical Assessment in Soccer were registered by an observer who analyzed the SSG videos. Reliability was verified calculating the intraclass correlation coefficient (ICC) and the absolute and percentage standard error of measurement (SEM and %SEM, respectively), both considering athletes’ individual scores in each SSG bout. As a result, higher number of variables related to physical and physiological demands presented significant ICC values, being classified as moderate to excellent in relation to variables related to tactical demands. Considering these variables that presented significant ICC values in both SSG, the SEM% values found for physical and physiological variables ranged from 3.0 to 42.0%, while those found for the tactical variables ranged from 31.6 to 75.0%. It could be concluded that several variables related to physical and physiological demands present moderate to excellent reliability. Differently, the majority of variables related to tactical demands were not reliable in both types of SSG.
Exercise intensity during official soccer matches
Authors: Coelho Daniel Barbosa , Paixão Rodney Coelho da , Oliveira Emerson Cruz de , Becker Lenice Kappes , Ferreira-Júnior João Batista , Coelho Leonardo Gomes , Dias João Carlos , Silami-Garcia Emerson 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n6p621 The aims of the study were: 1) to analyze the exercise intensity in several phases (six phases of 15 min) of soccer matches; 2) to compare the match time spent above anaerobic threshold (AT) between different age groups (U-17 and U-20); and 3) to compare the match time spent above AT between players’ positions (backs, midfielders, forwards and wingabcks). Forty-four male soccer players were analyzed. To express players’ effort, the heart rate (HR) was continuously monitored in 29 official matches. Further, HR corresponding to the intensity at the onset of blood lactate accumulation (OBLA) was obtained in a field test. The highest exercise intensity during match was observed in the 15-30 min period of the first half (p< 0.05). Match time spent above AT was not different between players from U-17 and U-20. In the comparison among players’ positions, wingbacks showed lower time above AT (p< 0.05) than players of other positions. The intensity of effort is higher in the 15 to 30 minutes of play (intermediate phase), probably because the players are more rested in the beginning and wearing out is progressive throughout the game. It is also noteworthy that the intensity of exercise (HR and time above AT) of wingbacks was lower, probably because they usually are required to run a larger number of sprints and need more time below the AT to recover.
Validação de conteúdo das cenas do Teste de Conhecimento Tático Declarativo no Voleibol – TCTD:Vb
Authors: Costa Gustavo De Conti Teixeira , Castro Henrique De Oliveira , Cabral Fabíola De Araújo , Morales Juan Carlos Pérez , Greco Pablo Juan 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n6p629 Declarative Tactical Knowledge Tests are presented as important evaluation tools for the teaching-learning-training process regulation. This study aimed to establish the content validity of scenes of the Declarative Tactical Knowledge Test in Volleyball – DTKT:Vb. Five male coaches of the Brazilian Volleyball team who worked with male athletes participated as judges, being responsible for training formation categories up to 21 years, experts in the sport, with minimum ten years of experience. The judges evaluated 212 scenes containing extremity attack (n=55), central attack (n=33), setting (n=68) and block (n=60) situations and used a 1-5 point likert scale to assign a score to the scene according to requisites image clarity, practical relevance and item representativity. The Content Validity Coefficient (CVC) was used to determine the CVC for each scene and the instrument as a whole, with cutoff point of 0.80. The results demonstrated that “image clarity” (CVC=0.92), “practical relevance” (CVC=0.96) and “item representativity” criteria (CVC=0.96) showed satisfactory levels. After calculating CVC, the ecological validity of scenes was determined, which consists of the selection of scenes where there was convergence among decision made by judges and decision made by athletes. Thus, from 212 scenes initially prepared, 66 have been validated. Scenes validated using CVC enabled the evaluation of the Declarative Tactical Knowledge, assisting in the planning of teaching-learning-training processes of male volleyball athletes.
Projeto Esporte Brasil: perfil da aptidão física relacionada ao desempenho esportivo de crianças e adolescentes
Authors: Mello Júlio Brugnara , Nagorny Gabriel Alberto Kunst , Haiachi Marcelo De Castro , Gaya Anelise Reis , Gaya Adroaldo Cezar Araujo 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n6p658 The aim of this study was to outline the physical fitness profile related to sport performance of Brazilian children and adolescents, stratified by sex. This is a descriptive cross-sectional study and information was obtained from the Projeto Esporte Brasil (PROESP-Br). The sample consisted of 8,750 voluntary subjects aged 7-17 years evaluated in the period between 2013 and 2015. The following variables were evaluated: lower limb strength (LLS) through the horizontal jump test and upper limb strength (ULS) through mediceball pitch, speed through the 20-meter sprint test and agility through the square test. Variables were classified with PROESP-Br criteria. For data processing, means, standard deviations, absolute and relative frequencies and confidence intervals were used. The results for boys have shown that the “poor” category had the highest prevalence: LLS (40.2%), ULS (29.7%), speed (41.4%) and agility (37.5%). The “excellent” category, as expected, had the lowest prevalence: LLS (3.7%), ULS (4.9%), speed (2.0%) and speed (3.5%). The results for girls were similar to those of boys, where the “poor” category had the highest prevalence: LLS (43.7%), ULS (36.8%), speed (43.8%) and agility (41.0 %). The “excellent” category also had the lowest prevalence: LLS (4.2%), ULS (4.3%), speed (1.6%) and speed (3.1%). The results indicated that the majority of Brazilian children and adolescents have physical fitness related to sport performance. Among variables analyzed, LLS for girls and speed for boys were the components with the most unfavorable results.
Desenvolvimento de um instrumento em Português para identificar as barreiras para a atividade física em crianças
Authors: Engers Patrícia Becker , Bergmann Gabriel Gustavo , Silva Marcelo Cozzensa da 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2017v19n1p1 The aim of this study was to develop an instrument to identify barriers to PA in children. This is a validation study with observational and cross-sectional design. The population consisted of students aged 06-09 years from the city of Uruguaiana/RS. The instrument content was obtained by theoretical matrix, constructed from the literature review and the assessment of barriers through open questions applied by proxy report (n=100) and focus groups conducted with parents/guardians and children. It is a questionnaire consisting of 29 closed questions. After testing the instrument clarity, its implementation was carried out (n = 293) to verify the construct validity and internal consistency. After one week, parents/guardians were asked to answer the questionnaire retest reliability (n = 168) to verify the agreement. Exploratory factor analysis distributed the 29 questions in six factors, with total variance of 55.6%. All items that have defined the factors obtained load greater than 0.4 and eingenvalues above 1.0. In the internal consistency analysis, item-total correlations ranged from 0.23 to 0.64 and the total alpha value was 0.90. Reproducibility values ranged from 0.43 to 0.78. Twenty-four questions met all the criteria adopted for the study. It was concluded that the instrument developed has adequate validity and reliability for the identification of barriers to PA in schoolchildren aged 06-09 years.
Indicadores antropométricos de obesidade como preditores de pressão arterial elevada em idosos
Authors: Diniz Keila De Oliveira , Rocha Saulo Vasconcelos , Oliveira Antonio Cesar Cabral de 
Published: December 2017

DOI: http://dx.doi.org/10.5007/1980-0037.2017v19n1p31 High blood pressure is a leading cause of mortality worldwide and a risk factor for several diseases. The aim of this study was to determine the predictive power of anthropometric indicators of obesity and establish their cutoff points as discriminators of hypertension and identify the anthropometric indicator of obesity that best discriminates high blood pressure in the elderly. This is a cross-sectional study with a sample of 300 older adults, 167 (56.5%) women. The following anthropometric indicators of obesity were measured: body mass index (BMI), waist circumference (WC), waist / height ratio (WHtR) and conicity index. Moreover, systolic and diastolic blood pressure measurements were collected. To identify hypertension predictors, the analysis of receiver operating curves (ROC) with 95% confidence interval was adopted. Subsequently, cutoff points with their respective sensitivities and specificities were identified. Analyses were carried out considering 5% significance level. It was observed that some anthropometric indicators of obesity showed area under the curve (AUC) significant with BMI = 0.60 (0.50 to 0.70); WHtR = 0.61 (0.51 to 0.71); conicity index = 0.58 (0.58 to 0.68) in men. The different cutoff points of anthropometric indicators with better predictive power and their respective sensitivities and specificities were identified. The best areas under the ROC curve were for BMI, WHtR and conicity index for men; however, such measures were not satisfactory to predict high blood pressure in women.