RESUMO
El objetivo del estudio fue llevar a cabo la validez concurrente del cuestionario WebCas para evaluar la actividad física (AF) en 140 estudiantes (10 a 16 años) divididos en cuatro grupos, instruidos para usar un acelerómetro y contestar el cuestionario WebCas diariamente, resultó en 213 días de monitoreo de AF. Los análisis estadísticos se realizaron utilizando la prueba U de Mann-Whitney, gráficos de dispersión (Bland y Altmann) y coeficientes de correlación. La correlación entre las mediciones de AF (WebCas) en comparación con las mediciones de acelerometria (un día) mostró correlación de baja intensidad (r = 0.22; p <0.001), moderado intensidad (r = 0,48; p <0,04), promedio de los tres días. Se observó mayor correlación para el promedio de AF de los 5 días (r = 0,67; p <0,01). El cuestionario WebCas presentó indicadores de validez satisfactorios. (AU)
The objective of the study was to carry out the concurrent validity of the WebCas questionnaire to evaluate physical activity (PA) in 140 students (10 to 16 years) divided into four groups, instructed to use an accelerometer and answer the WebCas questionnaire daily, which resulted in 213 days of PA monitoring. Statistical analyses were performed using the Mann-Whitney U-test, scatter plots (Bland and Altmann) and correlation coefficients. The correlation between PA (WebCas) measurements compared to acelerometry measurements (one day) showed low-intensity correlation (r = 0.22; p <0.001), moderate intensity (r = 0.48; p <0.04), an average of three days. Increased correlation was observed for the 5-day AF average (r = 0.67; p <0.01). The WebCas questionnaire presented satisfactory validity indicators. (AU)
Assuntos
Humanos , Masculino , Feminino , Criança , Adolescente , Educação Física e Treinamento , Atividade Motora , Acelerometria , Inquéritos e Questionários , Estudos TransversaisRESUMO
Many authors studied work situations and, mainly, ergonomics projects concerning the financial benefit point of view. At the same time seems to be little information available concerning these financial benefits in manufacturing companies' processes. The aim of this article is to identify if there enough information available within a company to quantify the financial benefits of an ergonomic project. The study was applied on two manufacturing companies, one in Brazil and other in Portugal. A literature review based checklist and a manager interview was applied on each company in order to identify if the information was available and how were been used. The two companies have revealed a good quantity of available information regarding ergonomics benefit calculation. The interviews showed that managers are not aware of the financial savings possibility with investments in ergonomics projects.
