VARIÁVEIS ANTROPOMÉTRICAS E FISIOLÓGICAS DE MILITARES DO 72º BATALHÃO DE INFANTARIA MOTORIZADO DE PETROLINA-PE SUBMETIDOS A DIFERENTES INTENSIDADES DE TREINAMENTO DE CORRIDA

Introdução: O treinamento físico militar (TFM) é fundamental para minimizar o risco de doenças e desenvolver o condicionamento físico necessário ao cumprimento das missões. No entanto, não obedece ao princípio da individualidade. Objetivo: Verificar a influência de três protocolos de treinamento sobre parâmetros antropométricos e fisiológicos. Métodos: Participaram do estudo 45 militares, alocados em três grupos. Todos os grupos realizaram 12 sessões de treinamento. O grupo controle realizou TFM e os grupos G70 e G95 realizaram treinamento físico individualizado (TFI) em intensidades de 70% e 95% do limiar anaeróbico, durante 70% do tempo limite para exaustão. Resultados: Os voluntários apresentavam médias de idade e IMC de 18,7À0,7 anos e 21,9À2,6 kg/m², respectivamente. Para todas as variáveis mensuradas não foram verificadas diferenças entre os grupos nos momentos PRÉ e PÓS. Porém, os grupos experimentais realizaram o TFI em tempo significativamente inferior ao grupo TFM (G95: 25min; G70: 60min; TFM: 90min; pConclusão: Os resultados demonstram que os protocolos experimentais são tão efetivos quanto o TFM, porém são executados em menor tempo. Neste sentido, o tempo reduzido de execução do treinamento otimiza o tempo de instrução dos militares e intensifica a preparação de instruções técnicas e táticas, sem comprometer o condicionamento físico

Oxidative stress and immune system analysis after cycle ergometer use in critical patients

OBJECTIVE: The passive cycle ergometer aims to prevent hypotrophy and improve muscle strength, with a consequent reduction in hospitalization time in the intensive care unit and functional improvement. However, its effects on oxidative stress and immune system parameters remain unknown. The aim of this study is to analyze the effects of a passive cycle ergometer on the immune system and oxidative stress in critical patients. METHODS: This paper describes a randomized controlled trial in a sample of 19 patients of both genders who were on mechanical ventilation and hospitalized in the intensive care unit of the Hospital Agamenom Magalhães. The patients were divided into two groups: one group underwent cycle ergometer passive exercise for 30 cycles/min on the lower limbs for 20 minutes; the other group did not undergo any therapeutic intervention during the study and served as the control group. A total of 20 ml of blood was analysed, in which nitric oxide levels and some specific inflammatory cytokines (tumour necrosis factor alpha (TNF-α), interferon gamma (IFN-γ) and interleukins 6 (IL-6) and 10 (IL-10)) were evaluated before and after the study protocol. RESULTS: Regarding the demographic and clinical variables, the groups were homogeneous in the early phases of the study. The nitric oxide analysis revealed a reduction in nitric oxide variation in stimulated cells (p=0.0021) and those stimulated (p=0.0076) after passive cycle ergometer use compared to the control group. No differences in the evaluated inflammatory cytokines were observed between the two groups. CONCLUSION: We can conclude that the passive cycle ergometer promoted reduced levels of nitric oxide, showing beneficial effects on oxidative stress reduction. As assessed by inflammatory cytokines, the treatment was not associated with changes in the immune system. However, further research in a larger population is necessary for more conclusive results

Prevalence of musculoskeletal pain in adolescents and association with computer and videogame use

Abstract Objective: This study investigated the presence of musculoskeletal symptoms in high school adolescents from public schools and its association with electronic device use. Methods: The sample consisted of 961 boys and girls aged 14–19 years who answered a questionnaire regarding the use of computers and electronic games, and questions about pain symptoms and physical activity. Furthermore, anthropometric assessments of all volunteers were performed. The chi-squared test and a multiple logistic regression model were used for the inferential analysis. Results: The presence of musculoskeletal pain symptoms was reported by 65.1% of the adolescents, being more prevalent in the thoracolumbar spine (46.9%), followed by pain in the upper limbs, representing 20% of complaints. The mean time of use for computers and electronic games was 1.720 and 583 minutes per week, respectively. The excessive use of electronic devices was demonstrated to be a risk factor for cervical and lumbar pain. Female gender was associated with the presence of pain in different body parts. Presence of a paid job was associated with cervical pain. Conclusion: A high prevalence of musculoskeletal pain in adolescents, as well as an increased amount of time using digital devices was observed. However, it was only possible to observe an association between the increased use of these devices and the presence of cervical and low back pain

Avaliação da resistência isométrica dos músculos do tronco em adolescentes de diferentes idades e sexos

Introduction: The association between low back pain and low resistance of the stabilizers muscles trunk have been documented among adolescents. Objective: To evaluate the time of isometric endurance of trunk in adolescents. Methods:Adolescents (n = 520), between 10-19 years, underwent four trunk endurance tests with maintenance record in seconds. The qualitative performance classification was made using averages, minimum, maximum, and quartiles. For comparison between sex and age and the interaction of these factors, was used two-way Anova with Bonferroni post-test. Results: Males showed better performance on tests (p ≤ 0.003) and this increase is proportional to age. The presence of interac-tion between the two factors for the tests in extension and flexion shows that the performance differs between sexes and ages. Conclusion: The sex and age influence the performance of endurance tests of the trunk in adolescents

Correlação entre a capacidade vital lenta e o tempo máximo de fonação em adultos saudáveis

Objetivo analisar o papel do tempo m&#225;ximo de fona&#231;&#227;o (TMF) como m&#233;todo de avalia&#231;&#227;o da capacidade vital lenta (CVL) e a poss&#237;vel correla&#231;&#227;o entre essas vari&#225;veis. M&#233;todos trata-se de um estudo do tipo transversal, crossover e a escolha entre as t&#233;cnicas foram realizadas de forma randomizada. Foram avaliados 101 indiv&#237;duos adultos saud&#225;veis de ambos os sexos sendo 71 mulheres. A CVL foi mensurada por meio do ventil&#244;metro, enquanto o TMF foi avaliado por meio da verbaliza&#231;&#227;o da vogal /a/, dos fonemas /s/ e /z/ e da contagem num&#233;rica. Resultados ao analisar a popula&#231;&#227;o total, observou-se uma significante correla&#231;&#227;o positiva entre a CVL e o TMF (/a/, /s/, /z/ e contagem num&#233;rica; R = 0,420, 0,442, 0,399 e 0,279, respectivamente com p < 0,05). Quando subdividida a amostra por sexo, apenas no sexo feminino foi verificada a exist&#234;ncia de correla&#231;&#227;o entre essas vari&#225;veis (R = 0,296, 0,334, 0,326 e 0,320 respectivamente com p < 0,05). Conclus&#227;o nesse estudo foi observada uma correla&#231;&#227;o positiva entre os valores de CVL e TMF para a popula&#231;&#227;o total e do sexo feminino, n&#227;o se verificando essa associa&#231;&#227;o entre os indiv&#237;duos do sexo masculino

Oxidative stress and immune system analysis after cycle ergometer use in critical patients

OBJECTIVE: The passive cycle ergometer aims to prevent hypotrophy and improve muscle strength, with a consequent reduction in hospitalization time in the intensive care unit and functional improvement. However, its effects on oxidative stress and immune system parameters remain unknown. The aim of this study is to analyze the effects of a passive cycle ergometer on the immune system and oxidative stress in critical patients. METHODS: This paper describes a randomized controlled trial in a sample of 19 patients of both genders who were on mechanical ventilation and hospitalized in the intensive care unit of the Hospital Agamenom Magalhães. The patients were divided into two groups: one group underwent cycle ergometer passive exercise for 30 cycles/min on the lower limbs for 20 minutes; the other group did not undergo any therapeutic intervention during the study and served as the control group. A total of 20 ml of blood was analysed, in which nitric oxide levels and some specific inflammatory cytokines (tumour necrosis factor alpha (TNF-α), interferon gamma (IFN-γ) and interleukins 6 (IL-6) and 10 (IL-10)) were evaluated before and after the study protocol. RESULTS: Regarding the demographic and clinical variables, the groups were homogeneous in the early phases of the study. The nitric oxide analysis revealed a reduction in nitric oxide variation in stimulated cells (p=0.0021) and those stimulated (p=0.0076) after passive cycle ergometer use compared to the control group. No differences in the evaluated inflammatory cytokines were observed between the two groups. CONCLUSION: We can conclude that the passive cycle ergometer promoted reduced levels of nitric oxide, showing beneficial effects on oxidative stress reduction. As assessed by inflammatory cytokines, the treatment was not associated with changes in the immune system. However, further research in a larger population is necessary for more conclusive results