RESUMO:A aptidão física dos jovens vem sendo amplamente estudada. A principal justificativa é a associação das variáveis que há compõem com indicadores de saúde. Outro conjunto de variáveis da aptidão física se relaciona com a capacidade de execução de tarefas, estas variáveis são denominadas aptidão física relacionada ao desempenho motor. Neste caso, há uma escassez de estudos comprometendo a indicação de um perfil para a aptidão física relacionada ao desempenho motor de adolescentes. O objetivo deste estudo foi descrever o nível de aptidão física relacionado ao desempenho motor em adolescentes. Foram avaliados 1.463 alunos entre 10 e 17 anos de ambos os sexos, estudantes de escolas públicas (municipais e estaduais) do município de Uruguaiana-RS. Para avaliar a aptidão física relacionada ao desempenho motor utilizou-se a bateria de testes (corrida de 20 metros, teste do quadrado, arremesso de medicine Ball, salto horizontal) e os critérios de classificação sugeridos pelo Projeto Esporte Brasil (PROESP-Br). As maiores frequências, para todas as variáveis, foram na classificação "fraco", tendo a agilidade a maior frequência em ambos os sexos. Mais de 50% dos alunos tiveram seus desempenhos classificados como "fraco" ou "razoável", sendo que as variáveis agilidade e força de membros inferiores foram as que obtiveram as maiores ocorrências desta classificação. A partir dos resultados encontrados, o nível de aptidão física relacionada ao desempenho motor de adolescentes de Uruguaiana-RS foi considerado baixo. Intervenções para o aumento da participação esportiva e em atividade físicas em geral devem ser elaboradas. Palavras-chave: Exercício; Desempenho Psicomotor; Desempenho Atlético, Jovens. MELLO, J. B; HERNANDEZ, M. S; FARIAS, V. M; PINHEIRO, E. S; BERGMANN, G. G. Aptidão física relacionada ao desempenho motor de adolescentes de Uruguaiana, Rio Grande do Sul. R. bras. Ci. e Mov 2015;23(4):ABSTRACT: The physical fitness of young people has been widely studied. The main rationale for it is the association of their variables with health indicators. Another set of physical fitness variables relates to the task execution capacity. These variables are called motor performance related physical fitness. In this case, there is a lack of studies compromising the indication of a profile for the motor performance related physical fitness in adolescents. The aim of this study was to describe the level of physical fitness related to motor performance in adolescents. We evaluated 1,463 students between 10 and 17 years of both sexes, attending public schools (state and local) in the city of Uruguaiana-RS. To evaluate the motor performance related physical fitness we used the battery of tests (running 20 meters square test, throwing medicine ball, standing long jump) and the criteria of classification suggested by Brazil Sport Project (PROESP-Br). The highest frequencies for all variables were the "weak" classification, having the agility the higher frequency in both genders. Over 50% of adolescents had their performance classifie...

The purpose of this study was to investigate the effect of different volumes of plyometric exercise (i.e., 100, 200, or 300 hurdle jumps) on acute strength and jump performance and on the acute hormonal and lactate responses in rugby players. Eleven young male elite rugby players (age, 23.5 ± 0.9 years; height, 173 ± 4.8 cm) volunteered for the study. Maximal isometric peak torque (PT), maximal rate of force development (RFD), squat jump (SJ), and drop jump (DJ) performance were assessed before and 5 minutes, 8 hours, and 24 hours after 100, 200, or 300 jumps. In addition, total testosterone (TT), cortisol (COR), and lactate were measured before and after the 3 different plyometric exercise volumes. There were significant decreases in the PT (p < 0.02) and maximal RFD (p < 0.001) 5 minutes, 8 hours, and 24 hours after 100, 200, and 300 jumps, with no differences between the exercise volumes. Additionally, there were significant decreases in the SJ (p < 0.001) and DJ (p < 0.01) performances 24 hours after 100, 200, and 300 jumps, with no differences between the exercise volumes. However, there were significant increases in the TT (p < 0.001), COR (p < 0.05), and lactate (p < 0.001) after 100, 200, and 300 jumps, with no differences between the exercise volumes. All plyometric exercise volumes (100, 200, and 300 jumps) resulted in similar neuromuscular, metabolic, and hormonal responses.

Use of the 6-minute walk/run test to predict peak oxygen uptake in adolescents Teste de corrida/caminhada de 6 minutos para a predição do consumo de oxigênio de pico em adolescentes

O acompanhamento do crescimento corporal durante a adolescência é um importante indicador de saúde, além de possibilitar a identifi cação do estado maturacional dos indivíduos. Frente a isso, os objetivos do estudo foram: a) descrever o desenvolvimento da estatura e de massa corporal de meninas e meninos dos 10 aos 14 anos de idade e suas diferenças nesse processo, e; b) identifi car o momento e a magnitude do pico de velocidade em altura (PVA) e do pico de velocidade em massa corporal (PVP) de meninos e meninas. Para tanto, foram acompanhados dos 10 aos 14 anos de idade, 70 escolares dos dois sexos. Foram medidas a estatura (cm) e a massa corporal (kg) dos mesmos indivíduos, anualmente, de 2001 a 2005. Os resultados demonstram que até os 12 anos não existem diferenças consistentes entre os sexos, e que aos 13 e 14 anos, os meninos são maiores e mais pesados que as meninas. O PVA e PVP ocorreram no mesmo período, sendo nos meninos dos 12 para os 13 anos, e nas meninas dos 10 para os 11 anos. Frente aos resultados, concluímos que, até o PVA dos meninos, não existem diferenças expressivas no crescimento corporal entre os sexos e que, a partir desse evento, os meninos fi cam maiores e mais pesados que as meninas. Além disso, concluímos que o PVA e o PVP ocorrem cerca de dois anos antes nas meninas. palavras-chave: Dimorfi smo sexual; Crescimento físico; Pico de velocidade. aBstraCtMonitoring physical growth during adolescence provides an important indicator of health status and also makes it possible to identify individuals' maturity stages. The objectives of this study were to: a) describe the progression of the heights and the body mass of girls and boys from 10 to 14 years of age and the differences between the sexes, and; b) to identify the point and magnitude of peak height growth velocity (PHV) and peak body mass velocity (PMV) for boys and girls. In order to achieve these objectives 70 schoolchildren of both sexes were followed from 10 to 14 years of age. Their height (cm) and body mass (kg) were measured annually from 2001 to 2005. The results demonstrate that up until 12 years of age there are no consistent differences between the sexes, but that at 13 and 14 years of age the boys are taller and heavier than the girls. The PHV and PMV both occurred during the same periods, being from 12 to 13 for boys and from 10 to 11 for the girls. Based on these results we concluded that until the boys reach their PHV, there is no signifi cant difference in physical growth between the sexes and that after this point the boys become taller and heavier than the girls. Furthermore, we concluded that girls reach PHV and PMV around 2 years before the boys. key words: Sexual dimorphism; Physical growth; Peak of velocity.

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Índice de massa corporal: tendência secular em crianças e adolescentes brasileiros 54.574 (24.144 meninas), no primeiro e segundo levantamento, respectivamente. A distribuição dos resultados foi feita a partir dos percentis 15 (P15), 50 (P50) e 85 (P85). Os resultados demonstraram que no P15, praticamente, não houve mudanças nos valores de IMC, no P50 e P80, por outro lado, ocorreram aumentos, sendo nos meninos ao longo de todas as idades, e nas meninas até em torno dos 11/12 anos. Seguindo os mesmos resultados de outros estudos, também no Brasil parece estar havendo aumento nos valores de IMC de crianças e adolescentes com o passar dos anos, aumentando a prevalência de sobrepeso e obesidade nesta faixa etária. Palavras-chave: Índice de massa corporal; Crianças; Adolescentes; Brasil. 17 years evaluated in 1989 and in 2004/2005. BMI distribution was compared using two large surveys conducted throughout Brazil in 1989Brazil in and 2004Brazil in /2005. The samples consisted of 16,012 (7908 girls) and 54,574 (24,144 girls) Abstract -The aim of this study was to compare the distribution of body mass index (BMI) between Brazilian children and adolescents aged 7 to

The aim of this study was to describe the perception of parents of overweight children about the effects of the period of social distancing due to COVID-19 on body weight (BW), level of physical activity (PA), time spent in sedentary behavior (SB) and their children's eating habits and sleep. Parents of 47 overweight children (11.1 ± 1.33 years) were interviewed by telephone. Questions about the perception regarding BW and the four behaviors related to the health of their children during the period of social distancing were asked. The increase in BW was perceived by 61.7% of children and for almost all of them (93.6%) reductions in PA levels were reported, with 72.4% reducing participation in vigorous PA. An increase in time using smartphones, tablets, and microcomputers was observed in 65.9% of children. Favorable changes were noted in relation to quality (34.1%) and daily sleep time (51.1%). Favorable changes in the consumption of fruits (36.2%) and soft drinks (21.2%) and unfavorable changes in the consumption of vegetables (19.1%) and sweets and snacks (26.2%) were also reported. Four and a half months after the start of the social distancing measures due to the COVID-19 pandemic, overweight children increased the BW and changed the levels of PA and SB in an unfavorable way according to their parents. On the other hand, they started sleeping more and with higher quality and consuming more fruits and less soft drinks.

The aim of this study was to identify barriers to use Outdoor Gyms (OGs) for physical activity (PA) practice and to examine their association with leisure-time PA, demographic and socioeconomic variables in adults and elderly. This cross-sectional population-based study enrolled 431 adults and elderly (66.8% women) aged 18 to 87 years living in the surroundings (up to 500 meters) of four OGs. Information about using OGs for PA practice, barriers to use OGs, leisure-time PA, demographic and socioeconomic variables were collected by domiciliary interview. Associations between barriers to use OGs with other included variables were analyzed using Chi-Square test. None barriers was reported for 29.2% (95%CI: 24.9-33.5) of the participants, being almost of then OGs’ users. The most reported barriers to use OGs were lack of time (21.6%; 95%CI: 17.7-25.5), lack of interest (16.5%; 95%CI: 13.0-20.0) and laziness (10.7%; 95%CI: 7.8-13.6). Intrapersonal barriers were more often among men, interpersonal among women and environmental among those with less educational level (p < 0.05). In conclusion, OGs’ users perceived fewer barriers than non-users, and most barriers to the use of OGs were intrapersonal with lack of time being the most prevalent.