Outcomes from elective colorectal cancer surgery during the SARS-CoV-2 pandemic

This study aimed to describe the change in surgical practice and the impact of SARS-CoV-2 on mortality after surgical resection of colorectal cancer during the initial phases of the SARS-CoV-2 pandemic

Comparison of available equations to estimate sit-to-stand muscle power and their association with gait speed and frailty in older people: Practical applications for the 5-rep sit-to-stand test

This study aimed i) to compare relative sit-to-stand power (STSrel) values yielded by the different equations reported in the literature; ii) to examine the associations between STSrel, derived from the equations, and age, sex, frailty and habitual gait speed (HGS); and iii) to compare the ability of the different STSrel equations to detect frailty and low HGS in older adults. 1568 participants (>65 years) were included. STSrel was calculated according to four validated equations. Frailty was assessed using the Frailty Trait Scale and HGS as the time to complete 3 m. ANOVA tests, regression analyses and receiver operator characteristic curves were used. There were significant differences among the STSrel values yielded by all the equations, which were higher in men compared to women and negatively associated with age (r = −0.21 to −0.37). STSrel was positively and negative associated to HGS and frailty, respectively, in both men (r = 0.29 to 0.36 and r = −0.18 to −0.45) and women (r = 0.23 to 0.45 and r = −0.09 to −0.57) regardless of the equation used. Area under the curve values varied between 0.68 and 0.80 for Alcazar's, 0.67–0.80 for Ruiz-Cárdenas's, 0.51–0.65 for Smith's, and 0.68–0.80 for Takai's equations. Low STSrel indicated an increased probability of having both low HGS and frailty (OR [95%CI] = 1.6 to 4.5 [1.21 to 5.79]) for all equations with the exception of Smith's equations for frailty in women. All the equations presented adequate criterion validity, however, the Alcazar's equation showed the highest level of clinical relevance according to its ability to identify older people with frailty and low HGS. •Muscle power values differed between equations.•Power values estimated from all equations were related to gait speed and frailty.•Alcazar's equation showed the highest level of clinical relevance

A distancia

Compendio de artículos que tratan de acercar a la comunidad universitaria algunos de los aspectos básicos para conocer la problemática del medio ambiente desde la perspectiva económica. La sensibilidad medioambiental y la actuación de los ciudadanos, de las empresas y del sector público; las políticas económicas ambientales -en su triple perspectiva: nacional, comunitaria e internacional- y la teoría de juegos, como modelo explicativo de la estrategia de los agentes de mercado, constituyen los temas analizados.MadridBiblioteca de Educación del Ministerio de Educación, Cultura y Deporte; Calle San Agustín, 5 - 3 Planta; 28014 Madrid; Tel. +34917748000; [email protected]