ABSTRACT
OBJECTIVE: To investigate predictors of low back and lower extremity musculoskeletal injury in a cohort of Naval cadets. DESIGN: Prospective Cohort Study METHODS: 545 Naval cadets (Males, n = 394, 72%) were followed-up over eight months. Nine variables were investigated as predictors: history of musculoskeletal symptoms in the last 12 months, ankle dorsiflexion range of motion, sit and reach test, isometric hip abduction and external rotation strength, alignment during the single leg squat test, single leg hop test for distance, prone plank and side plank tests. All injuries that required medical attention were registered. Predictive associations were examined using univariable and multivariable logistic regression analyses. RESULTS: The incidence of all injuries was 7%. Cadets who failed the 60-second plank test (OR = 3.3; 95% CI, 1.2-8.8, P = 0.04), had ≤18 cm in the sit and reach test (OR = 4.0; 95% CI, 1.4-11.2, P = 0.01), or reported pain in the last 12 months in two or more body regions (OR = 2.7; 95% CI, 1.02-7.3, P = 0.04), had greater odds of sustaining an overuse injury. No predictors were identified for acute injuries. CONCLUSION: Decreased trunk endurance on the prone plank test, reduced posterior chain flexibility on the sit and reach test, and a history of pain reported in two or more sites in the last 12 months were predictors of overuse injuries in Naval cadets. Assessment and intervention of these modifiable risk factors may be clinically relevant in injury screening and prevention.
Subject(s)
Cumulative Trauma Disorders/epidemiology , Lower Extremity/injuries , Military Personnel/statistics & numerical data , Musculoskeletal Pain/diagnosis , Spinal Injuries/epidemiology , Torso/physiology , Ankle Joint/physiology , Brazil , Female , Humans , Male , Physical Endurance , Physical Functional Performance , Prone Position/physiology , Prospective Studies , Range of Motion, Articular , Regression Analysis , Sitting Position , Young AdultABSTRACT
O objetivo do presente estudo foi determinar a reprodutibilidade de um instrumento de medida da potência muscular (PM), o Power Control TechnoGym@, através de um teste de PM. Foram avaliadas 15 mulheres (26,2 ± 1,9 anos) experientes em treinamento de força em dois exercícios, a remada sentada e a puxada aberta pela frente no pulley alto, através do teste de 1RM. Foram determinadas a carga máxima e a carga que gerou a potência máxima em cada exercício. Após a obtenção da carga que gerou potência máxima, os indivíduos passaram por três dias de testes em que se buscou verificar a reprodutibilidade inter e intradias das potências geradas. Utilizou-se a ANOVA para medidas repetidas na comparação dos resultados da PM para a carga individualizada e o post-hoc de Bonferroni para especificar quais medidas diferiam entre si, com o nível de significância adotado de 5 por cento. Não foram encontradas diferenças significativas entre as medidas inter e intradias, respectivamente, na remada sentada (p = 0,991; p = 1,000) e puxada aberta pela frente no pulley alto (p = 0,607; p = 1,000). Pode-se verificar que, para um simples teste de PM, o Power Control TechnoGym@ apresenta-se como um instrumento útil e fidedigno na utilização de cargas na PM.
The aim of this study was to determine the reproducibility of an instrument of measurement of muscular power (MP), the Power Control Technogym@, through a simple test of MP. Fifteen women (26.2 ± 1.9 years) experienced in strength training in two exercises - the low row and the front lat pull down, were evaluated through a test of 1RM. The maximum load and the load that generated the MP in each exercise were determined. After obtaining the load that generated the MP, the individuals carried out three days of testing with the purpose to analyze inter and intradays reproducibility of the generated power. The comparison between the results of the MP was made through the ANOVA for repeated measures and Bonferroni post-hoc to specify which measures differ from each other, being adopted a level of significance of 5 percent. No significant differences were found at inter and intradays measurements respectively in the low row (p = 0.991; p = 1.000) and front lat pull down (p = 0.607; p = 1.000). This data can suggest that, for a simple test of MP, the Power Control TechnoGym@ seems to be a useful and trustworthy instrument in the use of loads in the MP.
El objetivo del presente estudio ha sido el de determinar la reproducibilidad de un instrumento de medida da potencia muscular (PM), Power Control TechnoGym@, a través de un test de PM. Fueron evaluadas 15 mujeres (26,2 ± 1,9 anos) con experiencia en entrenamiento de fuerza en dos ejercicios, remo y tirón abierto por delante en el pulley alto, a través del test de 1RM. Fueron determinadas la carga máxima, y la carga que generó la potencia máxima en cada ejercicio. Después de obtener la carga que generó potencia máxima, los individuos pasaron por tres días de tests donde se buscó verificar la reproducibilidad inter e intradías de las potencias generadas. Se utilizó ANOVA para medidas repetidas en la comparación de los resultados de PM para carga individualizada, y post-hoc de Bonferroni para especificar cuáles medidas diferían entre sí, con nivel de significancia de 5 por ciento. No fueron encontradas diferencias significativas entre las medidas inter e intradías respectivamente en remo (p = 0,991; p = 1,000) y tirón abierto por delante en pulley alto (p = 0,607; p = 1,000). Podemos verificar que, para un simple test de PM, Power Control TechnoGym@ se presenta como un instrumento útil y fidedigno en la utilización de cargas en PM.