Silvia Leite Faria1, Orlando Pereira Faria2, Mariane de Almeida Cardeal3, Marina Kiyomi Ito4. 1. Graduate Program in Human Nutrition, University of Brasilia, Brasilia, Brazil; Gastrocirurgica Clinic, Brasilia, Brazil. Electronic address: silvialeitefaria@brturbo.com.br. 2. Gastrocirurgica Clinic, Brasilia, Brazil. 3. Graduate Program in Human Nutrition, University of Brasilia, Brasilia, Brazil; Gastrocirurgica Clinic, Brasilia, Brazil. 4. Graduate Program in Human Nutrition, University of Brasilia, Brasilia, Brazil.
Abstract
BACKGROUND: Preoperative bariatric patients can follow very low calorie diets (VLCD), reducing surgical risks. However, possible advantages of a liquid diet over one of normal consistency are controversial. This study investigated the effect of a liquid VLCD compared with one of normal consistency considering visceral fat (VF) loss and metabolic profile in preoperative clinically severe obese patients. METHODS: This was a randomized, open-labeled, controlled clinical trial. Patients were divided into 2 groups: liquid diet and normal diet. Data were collected at baseline and 7 and 14 days after intervention. Information gathered was analyzed for loss of weight and VF, biochemical data, anthropometric data, and energy intake. RESULTS: Fifty-seven patients consumed the liquid diet and 47 consumed the normal consistency diet. The liquid diet group lost significantly more weight (P<.0290) and VF (P<.0410) than the normal diet group. An inverse correlation occurred between VF loss and surgical time among the liquid diet group (r2=-.1302, P=.001). Additionally, there was a positive correlation between the percentage of excess weight loss and ketonuria (P=.0070). No between-group difference occurred regarding calorie intake. CONCLUSION: Patients that consumed a liquid diet presented a positive effect on reducing VF and greater weight loss than the normal diet group. Both VLCDs presented benefits offering a protective effect during the preoperative stage.
RCT Entities:
BACKGROUND: Preoperative bariatric patients can follow very low calorie diets (VLCD), reducing surgical risks. However, possible advantages of a liquid diet over one of normal consistency are controversial. This study investigated the effect of a liquid VLCD compared with one of normal consistency considering visceral fat (VF) loss and metabolic profile in preoperative clinically severe obesepatients. METHODS: This was a randomized, open-labeled, controlled clinical trial. Patients were divided into 2 groups: liquid diet and normal diet. Data were collected at baseline and 7 and 14 days after intervention. Information gathered was analyzed for loss of weight and VF, biochemical data, anthropometric data, and energy intake. RESULTS: Fifty-seven patients consumed the liquid diet and 47 consumed the normal consistency diet. The liquid diet group lost significantly more weight (P<.0290) and VF (P<.0410) than the normal diet group. An inverse correlation occurred between VF loss and surgical time among the liquid diet group (r2=-.1302, P=.001). Additionally, there was a positive correlation between the percentage of excess weight loss and ketonuria (P=.0070). No between-group difference occurred regarding calorie intake. CONCLUSION:Patients that consumed a liquid diet presented a positive effect on reducing VF and greater weight loss than the normal diet group. Both VLCDs presented benefits offering a protective effect during the preoperative stage.
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