Block Gladys, Wakimoto Patricia, Metz Diane, Fujii Mary L, Feldman Nancy, Mandel Rochelle, Sutherland Barbara
Public Health Nutrition Program, School of Public Health, University of California, Berkeley 94720, USA.
Prev Chronic Dis. 2004 Jul;1(3):A08. Epub 2004 Jun 15.
Research indicates that low fruit and vegetable intake is a risk factor for many chronic diseases. Despite large-scale education campaigns, the great majority of Americans do not consume recommended levels. We tested the ability of a single brief interactive experience of the Little by Little CD-ROM to increase fruit and vegetable intake in low-income women.
A randomized placebo-controlled, parallel-group trial included 481 low-income, female participants: mean age 50.1 years, 48.4% African American, 51.6% non-Hispanic white, and 92.5% below 185% of the federally designated poverty level. Participants received one of three conditions: 1) a one-time experience with the Little by Little CD-ROM, 2) the Little by Little CD-ROM plus two reminder telephone calls, or 3) a stress management CD-ROM (control condition). We assessed baseline and follow-up dietary intake with a modified 24-hour recall.
Two months after the one-time experience with the CD-ROMs, both intervention groups reported significantly higher intakes of fruits and vegetables than the control group. The Little by Little group with reminder calls increased daily intake by 1.32 fruits/vegetables, an 86% greater increase than the control group (P = .016). The Little by Little group without reminder calls increased daily intake by 1.20 fruits/vegetables, a 69% greater increase than the control group (P = .052). Significantly greater movement in Stage of Readiness for Change also occurred in the Little by Little groups compared with the control group.
The Little by Little CD-ROM may be useful in public health and clinical situations to increase fruit and vegetable intake.
研究表明，水果和蔬菜摄入量低是许多慢性病的一个风险因素。尽管开展了大规模的教育活动，但绝大多数美国人并未达到推荐摄入量。我们测试了《一点一点来》光盘的单次简短互动体验对增加低收入女性水果和蔬菜摄入量的作用。
一项随机安慰剂对照平行组试验纳入了481名低收入女性参与者：平均年龄50.1岁，48.4%为非裔美国人，51.6%为非西班牙裔白人，92.5%的人低于联邦指定贫困水平的185%。参与者被分配到以下三种情况之一：1）单次使用《一点一点来》光盘体验；2）《一点一点来》光盘加两次提醒电话；3）压力管理光盘（对照情况）。我们用改良的24小时回顾法评估基线和随访时的饮食摄入量。
在使用光盘进行单次体验两个月后，两个干预组报告的水果和蔬菜摄入量均显著高于对照组。接受提醒电话的《一点一点来》组每天的水果/蔬菜摄入量增加了1.32份，比对照组增加了86%（P = 0.016）。未接受提醒电话的《一点一点来》组每天的水果/蔬菜摄入量增加了1.20份，比对照组增加了69%（P = 0.052）。与对照组相比，《一点一点来》组在改变准备阶段的进展也显著更大。
《一点一点来》光盘在公共卫生和临床环境中可能有助于增加水果和蔬菜的摄入量。
