Resumo Objetivou-se investigar as relações do Tempo de Reação Simples (TRS), do Consumo Máximo de Oxigênio ( V ? V ? O2max) e da Potência Máxima Anaeróbica (Pmáx) no desempenho de homens e mulheres, adultos da categoria A, praticantes recreacionais de Orientação. Dezesseis sujeitos (8 homens e 8 mulheres; idade: 30 ± 4 e 27 ± 5 anos; massa corporal 78,8 ± 5,9 e 69,2 ± 10,4 kg; TRS: 1,391 ± 0,19 e 1,317 ± 0,25 ms; V ? V ? O2max: 67,4 ± 3,22 e 48,5 ± 8,28 ml.kg-1.min-1; Pmáx: 675,0± 149,6 e 458,4 ± 88,62 W), foram submetidos a três sessões de avaliação: caracterização amostral (1a sessão); mensurações do TRS - Reaction Time Task v.2.0, do V ? V ? O2max e da Pmáx - Running Anaerobic Sprint Test (2a sessão); prova de Orientação (3a sessão). Os resultados de comparação (teste T de Students) e de relação (Correlação Linear Produto-Momento de Pearson e Regressão Linear Múltipla) demonstraram relações estatisticamente significativas entre as variáveis independentes e o desempenho. A Pmáx apresentou forte poder de predição no grupo masculino (41%), seguida do TRS (32%) e do V ? V ? O2max (27%). No grupo feminino, o TRS foi a variável mais preditora (54%), seguida do V ? V ? O2max (32%) e da Pmáx (12%). Pode-se concluir que o TRS, o V ? V ? O2max e a Pmáx são variáveis preditoras do desempenho em adultos praticantes recreacionais de Orientação da categoria A. Especificamente, em sujeitos com maiores capacidades cardiorrespiratórias, a Pmáxparece ser a principal variável preditora. Em contrapartida, o TRS passa a ser a variável com maiorpoder de predição

Abstract This study aimed to examine the effects of Simple Reaction Time (SRT), MaximalOxygen Uptake ( V ? V ? O2max) and Maximal Anaerobic Power (Pmax) on the performance of category A recreational adult orienteers of both sexes. Sixteen subjects (8 men and 8 women; age: 30 ± 4 and 27 ± 5 years; body mass 78.8 ± 5.9 and 69.2 ± 10.4 kg; SRT: 1.391 ± 0.19 and 1.317 ± 0.25 ms; V ? V ? O2max: 67.4 ± 3.22 and 48.5 ± 8.28 ml.kg-1.min-1; Pmax: 675.0 ± 149.6 and 458.4 ± 88.62 W), were submitted to three evaluation sessions: sample characterization (1st session); SRT - Reaction Time Task v.2.0, V ? V ? O2max, and Pmax - Running Anaerobic Sprint Test (2nd session); official Orienteering test (3rd session). Results of comparison (Student’s T-test) and relation (Pearson Product-Moment Correlation and Multiple Linear Regression) tests showed significant relationships between independent variables and performance. Pmax presented strong predictive power in the male group (41%), followed by SRT (32%) and V ? V ? O2max (27%). In the female group, SRT was the most predictive variable (54%), followed by V ? V ? O2max (32%) and Pmax (12%). These findings indicated that SRT, V ? V ? O2max, and Pmax are variables predictive of performance in recreational category A orienteers. Specifically in recreational orienteers with high cardiorespiratory capacities, Pmax seems to be the mainpredictor variable. Conversely, SRT becomes the variable with the greatest predictive power.

Abstract The aim of this study was to translate, adapt and validate the version of the Athletic Identity Measurement Scale (AIMS) for Brazilian Portuguese. The methodological procedures were conducted according to international recommendations: translation, back-translation, review by a board of experts, empirical fieldwork testing and inferential statistical analyses. The psychometric properties were evaluated by applying the translated scale to 127 university students. Reproducibility was assessed through stability and homogeneity assessment. Validity was assessed by comparing the scores obtained from the athletes and university students. The results showed good internal consistency (α = 0.78), when item 3 was removed and the Cronbach's alpha value increased to 0.82. Through factor analysis, we verified that the items had loadings in two domains. Intra-class correlation coefficient for test and retest was 0.91. Comparison between athletes and university students showed good discriminant validity. According the cultural adaptation process the adapted instrument has excellent psychometric properties and is reliable for the Brazilian culture.

Objetivo: El objetivo del estudio fue investigar los efectos de la suplementación con maltodextrina (CHO) sólo o combinado con cafeína durante el ejercicio en sujetos con diabetes tipo 2. Métodos: Estudio piloto que incluyó ocho sujetos con DM2, de 55±10 años, el CHO (1g/kg) o cafeína (1.5 mg/kg) sólo o combinado antes del protocolo de ejercicio. El ejercicio se realizó a 40% de la frecuencia cardiaca (FC). Reserva del corazón durante 40 min con 10 min de recuperación. La presión arterial (PA) y la escala de esfuerzo (Borg) fueron revisados cada 2 min. La glucosa en sangre (GS) se comprobó cada 10 minutos. El análisis estadístico se realizó mediante ANOVA y consideró significación estadística un valor de p <0.05. Resultados: Los resultados muestran que PA, FC y Borg no difirió significativamente entre los tratamientos. La cafeína promueve una reducción significativa en los niveles de glucosa en la sangre de 75 mg/dL (65%, p <0.05) durante un protocolo de ejercicio de 40 min en comparación con todos los grupos. Conclusiones: Suplementación con 1.5 mg/kg de cafeína redujo significativamente los niveles de GS durante el protocolo de ejercicio en pacientes con DM2.

Objective: The study investigated the effect of supplementation with maltodextrin (CHO) alone or associated to caffeine during exercise in T2DM subjects. Methods: Pilot study, using Eight subjects with T2DM, aged 55±10 years, received CHO (1g/kg) or caffeine (1.5 mg/kg) alone or associated before exercise protocol. The exercise was executed at 40% heart rate (HR) reserve for 40 min, with 10-min recovery. Blood pressure (BP) and perceived exertion scale (Borg) were checked every 2 min. Blood glucose (BG) was checked every 10 min. For statistical analysis, ANOVA test was used and the value was considered statistically significant at p <0.05. Results: The results showed that BP and HR did not change significantly among all treatments. Caffeine promoted a significant reduction in BG of 75 mg/dL (65%, p <0.05) during 40 min of exercise protocol compared to all groups. Conclusion: Supplementation with 1.5 mg/kg of caffeine reduces BG concentration during prolonged exercise in T2DM patients.