Effects of added fruits and vegetables on dietary intakes and body weight in Scottish adults
2006
Whybrow, S. | Harrison, C.L.S. | Mayer, C. | Stubbs, R.J.
An increased consumption of fruits and vegetables (F&V) has been suggested as a way to limit, or even lower, energy and fat intakes. The present study examined the effects of incorporating F&V supplements into the diets of adults who reported consuming <240 g (three portions) of F&V per d on energy and fat intakes, and change in body weight, over 8 weeks using a randomised parallel design. Thirty-four males and twenty-eight females (age 42.6 (SD 11.1) years, BMI 23.7 (SD 2.7) kg/m2) were each provided with supplements of 0, 300 or 600 g F&V per d. Food, nutrient and energy intakes were measured before, during and at the end of the supplementation period using 7 d weighed records. Mean daily energy intakes were not different among the three groups before (P=0.151) or during the supplementation periods (P=0.407), although changes in energy intakes over the study period tended to be more positive with increasing amounts of F&V supplements (P=0.078). There was no difference in changes of body weights during the study (P=0.242). Carbohydrate (P<0.001), sugar (P<0.001), fibre (P<0.001) and weight of food consumed (P=0.022) increased in the treatment groups. There were no significant differences, or changes, in fat intakes among the three groups. Consumption of mandatory F&V supplements for 8 weeks produced beneficial changes in diet composition, but did not result in lower reported energy or fat intakes, and did not result in loss of body weight.
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