Dunton Genevieve Fridlund, Robertson Trina P
Health Promotion Research Branch, Behavioral Research Program, Division of Cancer Control and Population Sciences, National Cancer Institute, National Institutes of Health, Bethesda, MD 20852, USA.
Prev Med. 2008 Dec;47(6):605-11. doi: 10.1016/j.ypmed.2008.10.004. Epub 2008 Oct 15.
To evaluate the feasibility and efficacy of an individually tailored, Internet-plus-email physical activity intervention designed for adult women.
Healthy and ethnically-diverse adult females (N=156) (mean age=42.8 years, 65% Caucasian) from California were randomly assigned to an intervention (access to a tailored website and weekly emails) or wait-list control group. Participants completed web-based assessments of physical activity, stage of behavior change, and psychosocial variables at baseline, one month, two months, and three months. Data were collected during 2006-2007. Multilevel random coefficient modeling examined group differences in rates of change.
As compared to the control condition, the intervention group increased walking (+69 versus +32 min per week) and total moderate-to-vigorous physical activity (+23 versus -25 min per week) after three months. The intervention did not impact stage of behavior change or any of the other psychosocial variables.
A tailored, Internet-based intervention for adult women had a positive effect on walking and moderate-to-vigorous physical activity in an ethnically-diverse sample. However, given the lack of comparable research contact in the control group, these findings should be taken cautiously.
评估为成年女性设计的个性化互联网加电子邮件身体活动干预的可行性和效果。
来自加利福尼亚的健康且种族多样的成年女性（N = 156）（平均年龄 = 42.8岁，65%为白种人）被随机分配到干预组（可访问定制网站并每周接收电子邮件）或等待列表对照组。参与者在基线、1个月、2个月和3个月时完成基于网络的身体活动、行为改变阶段和心理社会变量评估。数据于2006 - 2007年收集。多级随机系数模型检验了变化率的组间差异。
与对照条件相比，干预组在3个月后步行时间增加（每周增加69分钟对32分钟），中度至剧烈身体活动总量增加（每周增加23分钟对减少25分钟）。干预对行为改变阶段或任何其他心理社会变量没有影响。
针对成年女性的定制化互联网干预对种族多样样本中的步行和中度至剧烈身体活动有积极影响。然而，鉴于对照组缺乏可比的研究接触，这些发现应谨慎看待。
