Poster Topical Area: Energy and Macronutrient Metabolism
Location: Hall D
Poster Board Number: 409
Nuts, including pistachios, are rich in fiber and protein which have been shown to enhance satiety. Studies have shown that including nuts in the diet improves appetite control and does not lead to weight gain. This study investigated daily consumption of pistachios as an afternoon snack in the workplace or at home and its effect on satiety, energy and nutrient intake, and body weight and composition.
Materials and Methods
This pilot, monocentric, randomised controlled trial included 2 parallel groups of 30 healthy, sedentary women, ages 18 – 50. For 4 weeks, groups consumed as an afternoon snack either 56 grams (315Kcal) of roasted, lightly salted pistachios or 56 grams of isocaloric/equiprotein, commercially available, savoury biscuits. Evening energy intake after the afternoon snack; changes in anthropometric measures and daily intake of energy , macronutrients and selected micronutrients were assessed. Visual analogue scales (VAS) were used to rate sensations of hunger, thirst, fullness, desire to eat and prospective consumption.
Satiety effects were not different between groups, as assessed by evening energy intake or VAS scores (p<0.05). Neither consuming pistachios nor biscuits had an impact on body weight after 4 weeks. This could be attributed to compensation mechanisms. There was a trend towards lower waist circumference in the pistachio group. Fat body mass remained stable among women consuming pistachios while it slightly increased among those consuming biscuits. Lean body mass slightly decreased in this group but did not change among women consuming pistachios. Thiamine, vitamin B6, copper and potassium intakes were significantly higher during the pistachio intervention compared to the control condition
The lack of difference in subjective feelings of hunger / satiety or food consumption between the snacks can be explained by their similar energy and protein content. A daily snack of 315Kcals pistachios for a month did not affect body weight or anthropometric measures but significantly improved intake of micronutrients.
Epidémiologie Nutritionnelle, Université Paris
Bobigni, Ile-de-France, France