Better dietary adherence and weight maintenance achieved by a long-term moderate-fat diet
2007
Azadbakht, L. | Mirmiran, P. | Esmaillzadeh, A. | Azizi, F.
The objective of the present study was to determine the effects of a long-term moderate-fat diet (30 % energy from fat) v. a low-fat one (20 % energy from fat) on metabolic risks. The study was a randomised, prospective 14-month trial on overweight and obese patients (eighty-nine overweight and obese men and women). The intervention was a moderate-fat diet (30 % energy) or a low-fat diet (20 % energy). The main outcome measurements were change in body weight, waist circumference, LDL-cholesterol, HDL-cholesterol, total cholesterol, TAG, and systolic and diastolic blood pressure. Forty-five subjects on the moderate-fat diet and forty-four subjects on the low-fat one were studied. Characteristics of all randomised participants were similar in both groups. After 7 months, the moderate- and low-fat diets had similar effects on cardiovascular risks. The moderate-fat diet was more successful after 14 months in reducing weight (-5.0 (SD 2.5) kg in the moderate-fat group v. - 1.2 (SD 1.1) kg in the low-fat one; P<0.0001), waist circumference (-5.5 (SD 2.4) cm in the moderate-fat group v. -2.3 (SD 1.3) cm in the low-fat one; P<0.0001), and other cardiovascular risk factors as well (LDL, TAG, total cholesterol and systolic blood pressure). In conclusion, a moderate-fat energy-restricted diet in the long term might have more beneficial effects on weight maintenance and cardiovascular risk factors compared with a low-fat diet. Better dietary adherence with the moderate-fat diet may be the reason for its successful effects.
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