Nothwehr F K, Guare J, Marrero D G, Hoen H
The Center for Aging Research, Indiana University School of Medicine, Indianapolis (Dr Nothwehr)
The Department of Psychology, Purdue University, Indianapolis, Indiana (Dr Guare)
Diabetes Educ. 2001 Mar-Apr;27(2):245-51. doi: 10.1177/014572170102700211.
This study was designed to compare the effects of 2 programs that present diet and exercise components in a different sequence.
At an urban YMCA, African American women with type 2 diabetes, aged 30 to 65, were randomly assigned to either 10 weekly sessions about healthy eating followed by 6 weekly sessions about exercise or to the reverse sequence. Sessions consisted of small group discussions and physical activity or food tasting. Primary outcomes were attendance, percent of calories consumed from fat, fruit and vegetable intake, and minutes of exercise per week. Measures were taken at baseline, and 4 and 12 months after the program.
The only group difference found at the 12-month follow-up was in diastolic blood pressure. Time effects for both groups combined included an increase in minutes of activity, an increase in vegetable intake, and a decrease in percent of calories consumed from fat.
This study does not provide definitive evidence of which sequence may be best to bring about behavior change. The effects of sequencing difficult behavioral changes such as diet modification and establishing an exercise habit deserve further study.
本研究旨在比较两种以不同顺序呈现饮食和运动内容的方案的效果。
在一家城市基督教青年会，年龄在30至65岁之间的患有2型糖尿病的非裔美国女性被随机分配到两种方案中：一种是先进行10周关于健康饮食的课程，随后进行6周关于运动的课程；另一种是顺序相反。课程包括小组讨论、体育活动或食物品尝。主要结局指标为出勤率、来自脂肪的卡路里摄入量百分比、水果和蔬菜摄入量以及每周运动分钟数。在基线时以及课程开始后的4个月和12个月进行测量。
在12个月随访时发现的唯一组间差异在于舒张压。两组合并的时间效应包括活动分钟数增加、蔬菜摄入量增加以及来自脂肪的卡路里摄入量百分比降低。
本研究未提供明确证据表明哪种顺序可能最有利于实现行为改变。对饮食调整和养成运动习惯等困难行为改变的顺序效应值得进一步研究。
