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Department of Psychology, University of Texas at El Paso, El Paso, TX
2To whom correspondence should be addressed. E-mail: jdecastro{at}utep.edu.
Dietary energy density markedly influences the daily dietary intake of humans. The present study examined the relation of energy density to dietary intake and body size in 371 male and 581 female adults. The subjects were free-living and provided a detailed record of their everyday food and drink intake in 7-d food diaries. The reported diets were analyzed for the relation of energy density to body size and to per-meal, daily, and weekly dietary intake. High energy density was associated with greater (P < 0.001) total intake, especially of fat, when intake was correlated with energy density (r = 0.26, P < 0.001) and when the daily intake of individual participants was correlated with their daily dietary density (r = 0.66, P < 0.001). These results occurred regardless of sex, low reporting, or the inclusion of drinks in the energy density calculations. High energy density was also associated with a high rate of intake (r = 0.46, P < 0.001) and large meal sizes (r = 0.61, P < 0.001). However, energy density was not correlated with body size, height, weight, or body mass index. High energy density appears to be related to greater overall intake in the short-term, but there may be compensation over the long term, with no net effect on body size.
KEY WORDS: • meal pattern • eating • meal frequency • meal size
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