Association between being underweight and excess body weight before SARS coronavirus type 2 infection and clinical outcomes of coronavirus disease 2019: Multicenter study.

OBJECTIVES: The present study aimed to identify associations between extremes in body weight status (underweight and excess body weight) before a COVID-19 diagnosis and clinical outcomes in patients infected with SARS coronavirus type 2. METHODS: A multicenter cohort study was conducted in eight different states in northeastern Brazil. Demographic, clinical (previous diagnosis of comorbidities), and anthropometric (self-reported weight and height) data about individuals who tested positive for COVID-19 were collected. Outcomes included hospitalization, mechanical ventilation, and death. Multivariable logistic regression models, adjusted based on age, sex and previous comorbidities, were used to assess the effects of extremes in body weight status on clinical outcomes. RESULTS: A total of 1308 individuals were assessed (33.6% were elderly individuals). The univariable analyses showed that only hospitalization was more often observed among underweight (3.2% versus 1.2%) and overweight (68.1% versus 63.3%) individuals. In turn, cardiovascular diseases were more often observed in all clinical outcomes (hospitalization: 19.7% versus 4.8%; mechanical ventilation: 19.9% versus 13.5%; death: 21.8% versus 14.1%). Based on the multivariable analysis, body weight status was not associated with risk of hospitalization (underweight: odds ratio [OR]: 1.10; 95% confidence interval [CI] 95%, 0.50-2.41 and excess body weight: OR: 0.81; 95 CI, 0.57-1.14), mechanical ventilation (underweight: OR: 0.92; 95% CI, 0.52-1.62 and excess weight: OR: 0.90; 95% CI, 0.67-1.19), and death (underweight: OR: 0.61; 95% CI, 0.31-1.20 and excess body weight: OR 0.88; 95% CI, 0.63-1.23). CONCLUSIONS: Being underweight and excess body weight were not independently associated with clinical outcomes in patients with COVID-19 in the herein analyzed cohort. This finding indicates that the association between these variables may be confounded by both age and comorbidities.

Constipation in patients with myofascial pain syndrome as important aspect for clinical and nutritional treatment: A case-control study / Constipação em pacientes com síndrome dolorosa miofascial como importante aspecto para o tratamento clínico e nutricional: um estudo caso-controle

ABSTRACT Objective To identify the occurrence of constipation in patients with myofascial pain syndrome and to correlate these disorders with the clinical and nutritional variables. Methods This report describes a case-control study performed with 98 adults of both sexs, including 49 patients and 49 individuals without pain. The intensity of the reported pain was evaluated using the Pain Visual Analog Scale, which provided a simple and efficient measurement of pain intensity consisting of a 10cm horizontal line with the ends marked "absence of pain" and "worst possible pain". The occurrence of constipation was evaluated using the Rome III criteria. A multivariate linear regression was proposed to investigate risk factors between the frequency of bowel movements per week and independent variables this study. Results The mean ages of the patients and controls were 45.9 (7.6) years and 41.2 (12.2) years, respectively. The intensity of the reported pain showed a mean of 7.3 (1.6) points. The likelihood of exhibiting constipation was 4.5 times higher in the patients than in the controls (p=0.001). The number of stools per week was negatively correlated with the intensity of the reported pain (r=-0.613, p<0.001). The use of benzodiazepines was negatively correlated with the frequency of bowel movements per week, while the use of muscle relaxants appeared to increase the frequency of defecation when combined with the use of benzodiazepines and adjusted for the intake of fiber, water and sexs (p=0.037). Conclusion Constipation was a frequent nosological entity in this patient population and the persistence of a change in intestinal motility showed a significant correlation with the pain intensity and low water intake. The reduction of the number of stools per week seems to be associated with the use of benzodiazepines.

RESUMO Objetivo Identificar a ocorrência de constipação em pacientes com síndrome dolorosa miofascial e correlacionar essa desordem da motilidade intestinal com variáveis clínicas e nutricionais. Métodos Trata-se de um estudo de caso-controle, realizado com 98 indivíduos adultos de ambos os sexos, sendo 49 pacientes e 49 indivíduos sem dor. A intensidade da dor foi avaliada usando a Escala Visual Analógica de Dor, que forneceu uma medida simples e eficaz de intensidade da dor, e consiste em uma linha horizontal de 10cm com as extremidades marcadas "ausência de dor" e "pior dor possível". A ocorrência de constipação foi avaliada utilizando os critérios de Roma III. Uma regressão linear multivariada foi proposta para investigar fatores de risco entre a frequência de dejeções por semana e demais variáveis independentes do estudo. Resultados A média da idade dos pacientes e controles foi de 45,9 anos ± 7,6 DP e 41,2 anos ± 12,2 DP, respectivamente. A intensidade da dor referida mostrou uma média de 7,3 pontos ± 1,6 DP. A probabilidade de exibir a constipação foi 4,5 vezes maior nos pacientes com dor miofascial que nos indivíduos do grupo controle (p=0,001). A frequência de dejeções semanais relatada pelos pacientes apresentou correlação negativa com a intensidade da dor (r=-0,613, p<0,001). O uso de benzodiazepínicos foi negativamente correlacionado com a frequência de dejeções por semana, enquanto que o uso de relaxantes musculares aumentou a frequência de dejeções quando combinado com o uso de benzodiazepínicos, e ajustado pela ingestão de fibras, água e sexo (p=0.037). Conclusão A constipação foi uma entidade nosológica frequente no grupo de pacientes com dor miofascial. A alteração na motilidade intestinal mostrou uma correlação significativa com a intensidade da dor e a baixa ingestão hídrica. A redução do número de dejeções por semana parece estar associada ao uso de benzodiazepínicos.

Selenium and Zinc Status in Chronic Myofascial Pain: Serum and Erythrocyte Concentrations and Food Intake.

INTRODUCTION: Nutritional disorders have been reported to be important causal factors that can intensify or cause a painful response in individuals with chronic musculoskeletal pain. AIM: To assess the habitual intake of and the serum and erythrocyte levels of selenium and zinc in patients with chronic myofascial pain. MATERIALS AND METHODS: A case-control study of 31 patients with chronic myofascial pain (group I) and 31 subjects without pain (group II). Dietary record in five days for assessing food intake were used. The serum and erythrocyte concentrations of selenium and zinc were analyzed using an atomic absorption spectrophotometry. Pain intensity was assessed using a visual analog scale. RESULTS: The group of patients with chronic myofascial pain, compared with the control group, showed a lower erythrocyte concentration of selenium (79.46 ± 19.79 µg/L vs. 90.80 ± 23.12 µg/L; p = 0.041) and zinc (30.56 ± 7.74 µgZn/gHb vs. 38.48 ± 14.86 µgZn/gHb, respectively; p = 0.004). In this study, a compromised food intake of zinc was observed in the majority of the subjects in both groups. The selenium intake was considered to be safe in 80% of the subjects in both groups; however, the likelihood of inadequate intake of this mineral was twice as high in group I (49.5% vs. 24.4%, respectively). In the logistic regression analysis, the erythrocyte concentration of zinc was associated with the presence of pain. In each additional 1 mg of Zn2+ per gram of hemoglobin, a reduction of 12.5% was observed in the risk of the individual having chronic myofascial pain (B = -0.133; adjusted OR = 0.875, 95% CI = 0.803 to 0.954, Wald = 9.187, standard error = 0.044, p = 0.002). Physical inactivity and obesity were noted more commonly in group I compared with the control group. CONCLUSION: In this study, patients with chronic myofascial pain showed lower intracellular stores of zinc and selenium and inadequate food intake of these nutrients.