Nutrition
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Obesity is a challenge for bioelectrical impedance analysis (BIA) estimations of skeletal muscle and fat mass (FM), and none of the equations used for appendicular lean mass (ALM) have been developed for people with obesity. By using different equations and proposing a new equation, this study aimed to assess the estimation of FM and ALM using BIA compared with dual-energy x-ray absorptiometry (DXA) as a reference method in a cohort of people with severe obesity. ⋯ BIA using multifrequency BIA in people with obesity is reliable enough for the estimation of FM, with good correlation and low bias to DXA. Regarding the estimation of ALM, BIA showed a good correlation with DXA, although it overestimated ALM, especially when proprietary equations were used. The use of equations developed using the same device improved the prediction, and our new equation showed a low bias for ALM.
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Neck circumference (NC) is a straightforward method for quantifying upper body adiposity without the limitations that other indices can have. Thus, this study aimed to analyze the relationship between NC, overall (body mass index [BMI]) and central obesity (waist circumference [WC]), and percentage of body fat (BF%) in men and women. ⋯ The utility of NC as a measurement of obesity in clinical practice was demonstrated in this large sample of young to middle-aged adults. The highest NC values were positively associated with overall obesity in men and central obesity in women. Moreover, NC was closely associated with high BF% in both sexes, particularly in women.
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To evaluate the associations of hand grip strength (HGS) with body composition, functional capacity, muscle quality, and inflammatory markers in people receiving maintenance hemodialysis. ⋯ Participants with low HGS showed higher inflammation and lower functional capacity. In addition to muscle mass, inflammation and nutritional status also affect HGS.
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We sought to evaluate the effect of socioeconomic conditions and variables related to the COVID-19 pandemic on the food insecurity of students during suspension of classes in public schools. ⋯ The prevalence of food insecurity was high, and policies for the distribution of food baskets may not be sufficient to guarantee food security for the most vulnerable families with a greater number of children. Considering the possible worsening of food insecurity during the COVID-19 pandemic, the National School Feeding Program has the potential to play a strategic role in promoting food security for students.
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Overweight and hyperlipidemia, the two established risk factors for acute ischemic stroke, are paradoxically associated with favorable outcomes. The paradox may be resolved by the concept of protein energy wasting (PEW), in which total cholesterol level and body mass index are used as nutritional indexes for predicting outcomes of chronic kidney disease. ⋯ According to the PEW-based assessment system, a modest decrease in body mass index and total cholesterol levels suggests malnutrition and is associated with adverse outcomes of acute ischemic stroke.