Academic journal article Research Quarterly for Exercise and Sport

Effects of a High Protein Diet and Exercise on Lipid Levels

Academic journal article Research Quarterly for Exercise and Sport

Effects of a High Protein Diet and Exercise on Lipid Levels

Article excerpt

High protein diets have become increasingly popular among the general public. High protein diets have been postulated to negatively impact lipid levels, yet new research suggests that lipid changes may in fact be due to fat content in the diet or active weight loss. The purpose of this study was to compare the effects of a higher protein diet followed for 12 weeks on lipid levels in young, normolipidemic, normogylcemic and previously sedentary participants. Forty-eight sedentary participants who had been inactive for the previous 3 months were randomly assigned to one of two diet groups consisting of Diet 1 (40% carbohydrate, 30% fat, 25% protein) and Diet 2 (40% carbohydrate, 30% fat, 25% protein and caloric restriction). Each diet group followed recommended aerobic exercise prescriptions. Approximately 20 ml of blood was collected from each participant "alter fasting for 12 hr using standardized venipuncture techniques in the antecubital vein in the bend of the elbow. Blood was donated at baseline (Week 0) and at 12 weeks. Blood analyses included total cholesterol, HDL, LDL, triglyceride and total cholesterol/HDL ratio. Participants had a 20-min session with a counselor every 2 weeks for the entire 12-week study period for a total of six visits. The counselor checked how well each participant was following the dietary and exercise recommendations and suggested changes to better fit those recommendations as necessary. …

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