Resumen Introducción. La calidad del sueño es un factor importante para la salud física y mental de los estudiantes de medicina. Objetivo. Evaluar la asociación entre el estrés académico y la calidad del sueño en estudiantes de medicina de una universidad de Lima, Perú, en tiempos de pandemia por COVID-19. Materiales y métodos. Estudio transversal analítico realizado en 410 estudiantes de Medicina de la Facultad de Medicina Humana de la Universidad Ricardo Palma, a quienes, entre octubre y noviembre de 2020, se les aplicó la versión en español del Índice de calidad del sueño de Pittsburgh, el Inventario de Estrés Académico SISCO SV-21 y una ficha sociodemográfica y de hábitos mediante Google Forms. Se realizaron análisis bivariados y multivariados para identificar los factores asociados a la mala calidad del sueño y al estrés académico utilizando razones de prevalencia (RP) con un intervalo de confianza del 95% y un nivel de significancia p<0.05. Resultados. El 97.32% de los estudiantes presentó "estrés académico" y el 90.48% tuvo "mala calidad del sueño". Los factores asociados a "mala calidad del sueño" fueron "altos niveles de estrés académico" (RPa: 2,433; 95%CI: 1.619-3.657; p=0.000), "no vivir con familiares" (RPa: 1,264; 95%CI: 1.107-1.443; p=0.001) y "trabajar además de estudiar" (RPa: 1,106; 95%CI: 1.012-1.209; p=0.026). Adicionalmente, "sexo biológico femenino" (RPa: 1,178; 95%CI: 1.090-1.273; p=0.000) y "lugar de nacimiento en Lima" (RPa: 0,929; 95%CI: 0.882-0.979; p=0.006) se asociaron significativamente al "estrés académico". Conclusión. Tener altos niveles de estrés académico, no vivir con familiares y trabajar además de estudiar fueron factores asociados con presentar una mala calidad del sueño en la población de estudio en tiempos de pandemia por COVID-19.

Abstract Introduction: Sleep quality is an important factor for both the physical and mental health of medical students. Objective: To evaluate the association between academic stress and sleep quality among medical students enrolled in a university of Lima (Peru) during the COVID-19 pandemic. Materials and methods: Analytical cross-sectional study carried out in 410 medical students from the School of Human Medicine of Universidad Ricardo Palma, who, in October and November 2020, were administered the Spanish version of the Pittsburgh Sleep Quality Index, the SISCO SV-21 Academic Stress Inventory, and a sociodemographic and habits questionnaire via Google Forms. Bivariate and multivariate analyzes were performed to identify factors associated with poor sleep quality and academic stress, using prevalence ratios (PR) with a 95% confidence interval and a significance level of p<0.05. Results: 97.32% of students presented with "academic stress" and 90.48% had "poor quality of sleep". Factors associated with "poor quality of sleep" were "high levels of academic stress" (aPR: 2.433; 95%CI: 1.619-3.657; p=0.000), "not living with relatives" (aPR: 1.264; 95%CI: 1.107-1.443; p=0.001), and "working in addition to studying" (aPR: 1.106; 95%CI: 1.012-1.209; p=0.026). Additionally, "female biological sex" (aPR: 1.178; 95%CI: 1.090-1.273; p=0.000) and "place of birth Lima" (aPR: 0.929; 95%CI: 0.882-0.979; p=0.006) were significantly associated with "academic stress." Conclusion: Having high levels of academic stress, not living with relatives, and working in addition to studying were factors associated with poor sleep quality among the study population during the COVID-19 pandemic.

Abstract Diabetic peripheral neuropathy (DPN) is a common complication of diabetes mellitus when glycemic levels are poorly controlled. Sometimes DPN is accompanied by vasculopathy (DPV), which can worsen the clinical prognosis. The aim of this study was to analyze the gait parameters of nondiabetic individuals and diabetic individuals with DPN with or without DPV. METHOD The study included 68 individuals (50 to 65 years old) divided into three groups: people without diabetes mellitus (n = 33), diabetic patients with DPN (n = 18), and diabetic patients with both DPN and DVP (n = 17). The participants underwent a gait evaluation using electronic baropodometry to obtain the single and double support, velocity, and pressure-time integral. RESULTS The pressure-time integral, velocity, and single support variables were lower, and the double support and double support/single support ratio were higher in the diabetic neuropathy and vasculopathy group. The velocity was lower the greater the degree of impairment of the diabetic foot. Some correlations were identified with velocity. CONCLUSION In diabetic individuals, there was a significant worsening of the gait parameters analyzed according to increasing degree of clinical impairment.

O experimento foi implantado no Pomar Didático do Centro Agropecuário da Palma, da Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, com o objetivo de avaliar o efeito de diferentes manejos da cobertura vegetal de aveia preta sobre a porcentagem de água, temperatura, conteúdo de matéria orgânica e resistência à penetração do solo e ao grau de infestação de plantas daninhas em pomar. Os tratamentos constaram de diferentes técnicas de manejo da cobertura vegetal de solo com aveia preta: incorporação da aveia ao solo; dessecação com herbicida; acamamento com rolo faca; roçada a 5 cm e uma testemunha (solo descoberto). A semeadura da aveia foi realizada em abril de 2002 e a aplicação dos tratamentos, no fim do mês de agosto do mesmo ano. O experimento foi desenvolvido em blocos casualizados, com três blocos, cinco tratamentos e uma repetição. Os dados foram submetidos à analise da variância através do teste F e as médias comparadas pelo teste de Duncan. Nos tratamentos em que houve manutenção da cobertura vegetal no pomar, observaram-se redução da temperatura, aumento da umidade do solo e da resistência à penetração. O revolvimento do solo aumentou a diversidade de plantas daninhas. A incorporação da aveia preta, após 60 dias, teve o mesmo comportamento que o solo descoberto, quanto à umidade e temperatura do solo.

The experiment was managed in the Didactic Orchard of the Agricultural Center of Palma, which belongs to the Federal University of Pelotas (UFPel). The treatments consisted of 5 different managements of black oat crop cover: incorporation of black oat to soil; chemical management with herbicide; lodging; mowing at 5 cm and control (uncovered soil). The sowing of the oat was accomplished by April of 2002 and the installation of the experiment, by the end of August of the same year. The analyzed variables were percentage of soil moisture at a depth of 15 cm, temperature of the soil at a depth of 5 cm, percentage of organic matter of the soil, soil resistance to the penetration and identification and degree of infestation by weeds. The experiment was managed in randomized blocks, with 3 blocks, 5 treatments and one repetition. The data were submitted to analysis of the variance through F test and the averages compared by Duncan Test. Maintenance of crop covering in orchard propitiated smaller temperature and larger soil moisture; the soil turn-over increased the diversity of weeds and the incorporation of black oat, after 60 days, had the same behavior as the uncovered soil.