Providing office workers with height-adjustable workstation to reduce and interrupt workplace sitting time: protocol for the Stand Up for Healthy Aging (SUFHA) cluster randomized controlled trial.

BACKGROUND: Sedentary behavior (SB) has been linked to several negative health outcomes. Therefore, reducing SB or breaking up prolonged periods of SB improves functional fitness, food consumption, job satisfaction, and productivity. Reducing SB can be achieved by introducing a health-enhancing contextual modification promoted by a sit-stand desk in the workplace. The primary goal will be to test the effectiveness of this intervention in reducing and breaking up SB, while improving health outcomes in office-based workers during a 6-month intervention. METHODS: A two-arm (1:1), superiority parallel-group cluster RCT will be conducted to evaluate the effectiveness of this intervention in a sample of office-based workers from a university in Portugal. The intervention will consist of a psychoeducation session, motivational prompts, and contextual modification promoted by a sit-stand desk in the workplace for 6 months. The control group will work as usual in their workplace, with no contextual change or prompts during the 6-month intervention. Three assessment points will be conducted in both groups, pre-intervention (baseline), post-intervention, and a 3-month follow-up. The primary outcomes include sedentary and physical activity-related variables, which will be objectively assessed with 24 h monitoring using the ActivPAL for 7 days. The secondary outcomes include (a) biometric indices as body composition, body mass index, waist circumference, and postural inequalities; and (b) psychosocial variables such as overall and work-related fatigue, overall discomfort, life/work satisfaction, quality of life, and eating behavior. Both the primary and secondary outcomes will be assessed at each assessment point. DISCUSSION: This study will lean on the use of a sit-stand workstation for 6 months, prompted by an initial psychoeducational session and ongoing motivational prompts. We will aim to contribute to this topic by providing robust data on alternating sitting and standing postures in the workplace. TRIAL REGISTRATION: The trial was prospectively registered, and the details are at: https://doi.org/10.17605/OSF.IO/JHGPW ; Registered 15 November 2022. OSF Preregistration.

Development and validation of the Portuguese version of the Eating Disorder Diagnostic Scale / Desarrollo y validación de la versión portuguesa de la Escala de Diagnóstico del Trastorno Alimentario

This article presents the psychometric properties for the Portuguese population of a brief self-report scale for diagnosing anorexia nervosa (AN), bulimia nervosa (BN), and binge-eating disorder (BED): the Eating Disorder Diagnostic Scale (Stice et al., 2000). METHOD: To study the psychometric properties of EDDS, an exploratory factor analysis was done first, followed by a confirmatory factor analysis. RESULTS: The results of the exploratory factor analysis revealed the existence of three components and the confirmatory factor analysis showed a structure with three latent variables (Body and Weight Concerns, Binge Eating Behaviour and Compensatory Behaviours), with a second order variable (Eating Disorder Symptoms) with a good adjustment fit. The internal consistency and the test-retest correlations revealed an adequate reliability and the inter-correlations of the EDDS subscales with other measures of the same and different constructs, supported the convergent and discriminant validity of this measure. CONCLUSIONS: Summing up, the EDDS seems to be a useful measure to assess eating disorders symptomatology in the Portuguese population

En este artículo se presentan las propiedades psicométricas para la población portuguesa de una escala breve de autoinforme para el diagnóstico de la anorexia nerviosa, la bulimia nerviosa y el trastorno por atracones: la Escala de Diagnóstico del Trastorno Alimentario (EDTA; Stice, Telch y Rizvi, 2000). MÉTODO: Para estudiar las propiedades psicométricas de la EDTA se efectuó un análisis factorial exploratorio, seguido por un análisis factorial confirmatorio. RESULTADOS: Los resultados del análisis factorial exploratorio muestran la existencia de 3 componentes y el análisis confirmatorio evidencia una estructura con 3 variables latentes (preocupaciones sobre el cuerpo y el peso, comportamientos de ingesta por atracones y conductas compensatorias), con un factor de segundo orden (síntomas de trastornos de alimentación) con un buen ajuste. La consistencia interna y las correlaciones test-retest muestran una confiabilidad adecuada, y las intercorrelaciones de las subescalas de la EDTA con otras medidas del mismo y de diferentes constructos fortalecen la validez convergente y discriminante de la medida. CONCLUSIONES: En resumen, la EDTA parece ser una medida útil para evaluar sintomatología de trastornos de la alimentación en la población portuguesa