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To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jada.2006.09.005 Byline: Julie E. Flood, Liane S. Roe, Barbara J. Rolls Abstract: This study examined the impact of increasing beverage portion size on beverage and food intake.

Objective This study investigated food choices made by individuals consuming diets differing in energy density and explores relationships between energy density and diet quality. Design Cross-sectional, nationally representative survey. Subjects 7,500 adults (older than 19 years) in the 1994-1996 Continuing Survey of Food Intakes by Individuals. Statistical analysis Energy density values were calculated from reported food intake. Subjects were classified as consuming a low-energy-density diet, medium-energy-density diet, or high-energy-density diet using tertile cutoffs. For each group, the percentage consuming various foods/beverages and the mean amount of foods/beverages they consumed was determined along with mean nutrient intakes. Results Compared with participants consuming a high-energy-density diet, those with a low-energy-density diet had a lower energy intake but consumed more food, by weight, from most food groups. A low-energy-density diet included a relatively high proportion of foods high in micronutrients and water and low in fat, such as fruits and vegetables. Subjects with a low-energy-density diet consumed fewer (nonwater) beverages such as caloric carbonated beverages. They also consumed less fat and had higher intakes of several important micronutrients, including vitamins A, C, and B-6, folate, iron, calcium, and potassium. Conclusions These analyses further demonstrate the beneficial effects of a low-energy-density diet, which was associated with lower energy intakes, higher food intakes, and higher diet quality than a high-energy-density diet. To achieve a low-energy-density diet, individuals should be encouraged to eat a variety of fruits and vegetables as well as low-fat/reduced-fat, nutrient-dense, and/or water-rich grains, dairy products, and meats/meat alternatives.

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jada.2006.01.014 Byline: Barbara J. Rolls, Liane S. Roe, Jennifer S. Meengs Abstract: We tested the effect on energy intake of increasing the portion size of all foods and beverages served over 2 consecutive days.

A growing body of laboratory-based, clinical, and epidemiological data suggests that low-energy-dense diets are associated with better diet quality, lower energy intakes, and body weight. Dietary energy density can be lowered by adding water-rich fruits, vegetables, cooked grains, and soups to the diet, and by reducing the diet's fat content. Low-energy-dense diets can be successfully incorporated into clinical dietetics since they help lower energy intake without reducing food volume and thus help individuals avoid feeling hungry and deprived. There are multiple steps that could be taken by nutrition professionals and food manufacturers to encourage the consumption of low-energy-dense diets. The goal is to develop reduced-calorie eating plans that meet personal food preferences and also provide satisfying food portions. Since using energy density to guide food choices leads to food patterns consistent with dietary guidelines, policy level initiatives should be devised to help ensure that low-energy-dense diets are affordable and accessible to all. J Am Diet Assoc. 2005;105:S98-S103.

Objective We tested the effect on meal intake of varying the energy density and portion size of a compulsory first-course salad. Design The study used a randomized crossover design. Subjects/Setting Forty-two women from the State College, PA, university community ate lunch in the laboratory once per week for 7 weeks. Intervention Lunch comprised one of six first-course salads, or no salad in the control condition, followed by a main course of pasta. Subjects were required to consume the entire salad, but ate as much pasta as they wanted. The salads varied in energy density (0.33, 0.67, or 1.33 kcal/g) and portion size (150 or 300 g). The energy density of the salad was reduced by changing the amount and type of dressing and cheese. Main Outcome Measures Energy intake and ratings of hunger, satiety, and food characteristics were measured. Statistical Analyses Performed Outcomes were analyzed using a linear mixed model with repeated measures. Results Compared with having no first course, consuming the low-energy-dense salads reduced meal energy intake (by 7% for the small portion and 12% for the large), and consuming the high-energy-dense salads increased intake (by 8% for the small portion and 17% for the large). When two salads with the same number of calories were compared, meal intake was decreased when the large portion of the lower-energy-dense salad was consumed. Conclusions Eating a low-energy-dense first course enhances satiety and reduces meal energy intake. Consuming a large portion of a low-energy-dense food at the start of a meal may be an effective strategy for weight management.

Objective This study investigated the effect on energy intake of increasing the portion size of a food served as a discrete unit. Design A within-subject design with repeated measures was used. Subjects/Setting The sample comprised 75 young adults (37 females and 38 males) from a university community. Intervention Individuals ate lunch in the lab once a week for 4 weeks. Each week, they were served one of four sizes of a deli-style sandwich (6, 8, 10, or 12 inches), of which they could eat as much as they wanted. Main Outcome Measures Energy intakes were determined for each meal, as were ratings of hunger and satiety before and after each meal. Statistical Analyses Performed A linear mixed model with repeated measures was used. The influence of subject characteristics was examined using analysis of covariance. Results The portion size of the sandwich significantly influenced lunch intake for both males and females (P<.0001). The majority of individuals consumed the entire 6-inch sandwich. When served the 12-inch sandwich, compared with the 8-inch sandwich, females consumed 12% more energy (74 kcal) and males consumed 23% more energy (186 kcal). Despite these differences, ratings of hunger and fullness were not significantly different after eating the 12-inch and 8-inch sandwiches. Applications/Conclusions These results suggest that increasing the portion size of a food served as a discrete unit leads to increased energy intake at a single meal without differentially influencing ratings of hunger and satiety. Dietitians should educate their clients about strategies to moderate the effect on intake of increased portions of high-calorie foods. J Am Diet Assoc. 2004;104:367-372.

Objective To develop a new dietary variety score (DVS) and link it to other measures of diet quality, including a modified diet quality index (DQI). Subjects The subjects were 24 healthy young (ages 20 to 30 years) and 24 healthy older (ages 60 to 75 years) adults, including 24 men and 24 women. Their dietary intake assessments were based on one 24-hour food recall interview and 14 consecutive days of food records. Design and measures Energy and nutrient intakes were estimated using Nutritionist IV software. DVS was based on the cumulative number of different foods consumed over the 15-day period. DQI was a 5-point scale based on conformity with the key US dietary recommendations. Full score was awarded for diets deriving 30% or less of energy from fat, 10% or less of energy from saturated fat, more than 50% of energy from carbohydrate, and containing less than 300 mg cholesterol and 2,400 mg sodium per day. Analytic measures included analyses of variance, correlation analyses, and [[Chi].sup.2] tests. Results Older subjects consumed more varied diets than did young subjects. Higher DVS values were linked positively to vitamin C intakes and negatively to the consumption of salt, sugar, and saturated fat. However, a high DVS was not linked to a high score on the DQI in this subject sample. Discussion/conclusions Few studies have addressed the issue of how many different foods constitute a varied diet. The present classification scheme offers a new way of assessing dietary variety at the individual or group level. Measures of dietary variety may represent an additional facet of diet quality and their relationship to selected health outcomes should be examined further.

Much research on human eating behavior has focused on physiologic or metabolic variables, but cognitive factors also play an important role in determining food intake. This point is important as [...]

Americans have come to expect large portion sizes. This is evident from the number of 'super-sized' and 'value-sized' food items available in grocery stores and restaurants. Larger portion sizes could [...]

Abstract: Objective: This study investigated food choices made by individuals consuming diets differing in energy density and explores relationships between energy density and diet quality. Design: Cross-sectional, nationally representative survey. Subjects: 7,500 adults (older than 19 years) in the 1994-1996 Continuing Survey of Food Intakes by Individuals. Statistical Analysis: Energy density values were calculated from reported food intake. Subjects were classified as consuming a low-energy-density diet, medium-energy-density diet, or high-energy-density diet using tertile cutoffs. For each group, the percentage consuming various foods/beverages and the mean amount of foods/beverages they consumed was determined along with mean nutrient intakes. Results: Compared with participants consuming a high-energy-density diet, those with a low-energy-density diet had a lower energy intake but consumed more food, by weight, from most food groups. A low-energy-density diet included a relatively high proportion of foods high in micronutrients and water and low in fat, such as fruits and vegetables. Subjects with a low-energy-density diet consumed fewer (nonwater) beverages such as caloric carbonated beverages. They also consumed less fat and had higher intakes of several important micronutrients, including vitamins A, C, and B-6, folate, iron, calcium, and potassium. Conclusions: These analyses further demonstrate the beneficial effects of a low-energy-density diet, which was associated with lower energy intakes, higher food intakes, and higher diet quality than a high-energy-density diet. To achieve a low-energy-density diet, individuals should be encouraged to eat a variety of fruits and vegetables as well as low-fat/reduced-fat, nutrient-dense, and/or water-rich grains, dairy products, and meats/meat alternatives. [Copyright &y& Elsevier]