Thiago Elpídio Cardoso

Prática de caminhada, atividade física moderada e vigorosa e fatores

Physical inactivity is considered a major cause of morbidity and mortality worldwide. The aim of this study was to analyze the association of socio demographic fac- tors, weight status, body adiposity and sedentary behavior with the practice of walking and moderate and vigorous physical activity in adolescents. This cross-sectional study included 631 adolescents (413 girls) aged 14-17 years. A self-administered questionnaire was used to collect data. Boys showed longer time of practice of walking and vigorous activity than girls. Adolescents of high economic level were more involved in vigorous activities. Overweight girls and adolescents showed, respectively, 98 and 138 minutes/week less of practice of walking when compared to boys and normal-weight adolescents. Adolescents with high body adiposity had 100 minutes/week more of practice of walking in relation to adolescents with normal adiposity. In relation to vigorous activity, girls showed 198 minutes/week less when compa- red to boys. The association of factors investigated in this study with the practice of physical activity in adolescents varies according to the type and intensity of the activity performed.

Practice of walking, moderate and vigorous physical activity and associated factors in adolescents from a state capital of southern Brazil.

Physical inactivity is considered a major cause of morbidity and mortality worldwide. The aim of this study was to analyze the association of socio demographic fac- tors, weight status, body adiposity and sedentary behavior with the practice of walking and moderate and vigorous physical activity in adolescents. This cross-sectional study included 631 adolescents (413 girls) aged 14-17 years. A self-administered questionnaire was used to collect data. Boys showed longer time of practice of walking and vigorous activity than girls. Adolescents of high economic level were more involved in vigorous activities. Overweight girls and adolescents showed, respectively, 98 and 138 minutes/week less of practice of walking when compared to boys and normal-weight adolescents. Adolescents with high body adiposity had 100 minutes/week more of practice of walking in relation to adolescents with normal adiposity. In relation to vigorous activity, girls showed 198 minutes/week less when compa- red to boys. The association of factors investigated in this study with the practice of physical activity in adolescents varies according to the type and intensity of the activity performed.

Prática de caminhada, atividade física moderada e vigorosa e fatores associados em adolescentes de uma capital do sul do Brasil

Physical inactivity is considered a major cause of morbidity and mortality worldwide. The aim of this study was to analyze the association of socio demographic fac- tors, weight status, body adiposity and sedentary behavior with the practice of walking and moderate and vigorous physical activity in adolescents. This cross-sectional study included 631 adolescents (413 girls) aged 14-17 years. A self-administered questionnaire was used to collect data. Boys showed longer time of practice of walking and vigorous activity than girls. Adolescents of high economic level were more involved in vigorous activities. Overweight girls and adolescents showed, respectively, 98 and 138 minutes/week less of practice of walking when compared to boys and normal-weight adolescents. Adolescents with high body adiposity had 100 minutes/week more of practice of walking in relation to adolescents with normal adiposity. In relation to vigorous activity, girls showed 198 minutes/week less when compa- red to boys. The association of factors investigated in this study with the practice of physical activity in adolescents varies according to the type and intensity of the activity performed.

Efeito da ingestão de cafeína no desempenho em corrida de 200 metros rasos

The aim of this study was to investigate the influence of caffeine ingestion on 200 meters performance (200 m). Seventeen physical education students (21.5 ± 2.15 years; 175.9 ± 5.5 cm; 74.1 ± 10.04 kg) performed on two different days two performances of 200 m. One hour before the performance the participants ingested a gelatin capsule containing either caffeine (6 mg.kg-1) or placebo in a randomized double-blinded manner. Were analyzed the end time of the 200 m race and blood lactate ([La]; rest, pre-warm-up and post-test) Caffeine intake decreased the time to overcome 200 m race compared to placebo intake (27.398 ± 1.626 and 27.596 ± 1.714 s, respectively) and increased blood lactate concentration [La] pre-warm-up (1.236 ± 0.497; 1.064 ± 0.330 mM, respectively) without modification in [La] peak. Thus, we conclude that caffeine intake exert an ergogenic effect on anaerobic performance, however analyzing the [La] peak, this improvement does not seem to be related to increased glycolytic flux.

Efeito da ingestão de cafeína em diferentes tarefas de tempo de reação

El estudio examino los efectos de la ingestion de cafeina en diferentes tareas de tiempo de reaccion. En dos sesiones, 22 hombres (22,4 ± 2,9 anos; 77,3 ± 5,4 kg) ingeriran placebo o cafeina (3 mg/kg) 45 minutos antes de la prueba del tiempo de reaccion simple visual (TR visual), auditivo (TR auditivo), audio-visual (TR audio-visual) y de la discriminacion sensorial (TR discriminacion sensorial). No se encontraron diferencias significativas en el TRS auditorio y TR de la discriminacion sensorial, se encontraron diferencias signi?cativas solo en lo TRS visual (Cafeina: 242,1 ± 25,98 ms vs. Placebo: 254,34 ± 28,29 ms) e TRS audio-visual (Cafeina: 242.55 ± 31.27 ms vs. Placebo: 255.68 ± 30.02 ms). Los resultados muestran el efecto psicoestimulante causado por la ingesta de cafeina en TRS visual y audio-visual.

Effect of caffeine ingestion on different reaction time tasks

El estudio examino los efectos de la ingestion de cafeina en diferentes tareas de tiempo de reaccion. En dos sesiones, 22 hombres (22,4 ± 2,9 anos; 77,3 ± 5,4 kg) ingeriran placebo o cafeina (3 mg/kg) 45 minutos antes de la prueba del tiempo de reaccion simple visual (TR visual), auditivo (TR auditivo), audio-visual (TR audio-visual) y de la discriminacion sensorial (TR discriminacion sensorial). No se encontraron diferencias significativas en el TRS auditorio y TR de la discriminacion sensorial, se encontraron diferencias signi?cativas solo en lo TRS visual (Cafeina: 242,1 ± 25,98 ms vs. Placebo: 254,34 ± 28,29 ms) e TRS audio-visual (Cafeina: 242.55 ± 31.27 ms vs. Placebo: 255.68 ± 30.02 ms). Los resultados muestran el efecto psicoestimulante causado por la ingesta de cafeina en TRS visual y audio-visual.

Efecto de la ingesta de cafeína en diferentes tareas de tiempo de reacción

El estudio examino los efectos de la ingestion de cafeina en diferentes tareas de tiempo de reaccion. En dos sesiones, 22 hombres (22,4 ± 2,9 anos; 77,3 ± 5,4 kg) ingeriran placebo o cafeina (3 mg/kg) 45 minutos antes de la prueba del tiempo de reaccion simple visual (TR visual), auditivo (TR auditivo), audio-visual (TR audio-visual) y de la discriminacion sensorial (TR discriminacion sensorial). No se encontraron diferencias significativas en el TRS auditorio y TR de la discriminacion sensorial, se encontraron diferencias signi?cativas solo en lo TRS visual (Cafeina: 242,1 ± 25,98 ms vs. Placebo: 254,34 ± 28,29 ms) e TRS audio-visual (Cafeina: 242.55 ± 31.27 ms vs. Placebo: 255.68 ± 30.02 ms). Los resultados muestran el efecto psicoestimulante causado por la ingesta de cafeina en TRS visual y audio-visual.