King Abby C, Ahn David K, Oliveira Brian M, Atienza Audie A, Castro Cynthia M, Gardner Christopher D
Stanford Prevention Research Center, Department of Medicine, Stanford University School of Medicine, Stanford, California 94305-5705, USA.
Am J Prev Med. 2008 Feb;34(2):138-42. doi: 10.1016/j.amepre.2007.09.025.
Efforts to achieve population-wide increases in walking and similar moderate-intensity physical activities potentially can be enhanced through relevant applications of state-of-the-art interactive communication technologies. Yet few systematic efforts to evaluate the efficacy of hand-held computers and similar devices for enhancing physical activity levels have occurred. The purpose of this first-generation study was to evaluate the efficacy of a hand-held computer (i.e., personal digital assistant [PDA]) for increasing moderate intensity or more vigorous (MOD+) physical activity levels over 8 weeks in mid-life and older adults relative to a standard information control arm.
Randomized, controlled 8-week experiment. Data were collected in 2005 and analyzed in 2006-2007.
SETTING/PARTICIPANTS: Community-based study of 37 healthy, initially underactive adults aged 50 years and older who were randomized and completed the 8-week study (intervention=19, control=18).
Participants received an instructional session and a PDA programmed to monitor their physical activity levels twice per day and provide daily and weekly individualized feedback, goal setting, and support. Controls received standard, age-appropriate written physical activity educational materials.
Physical activity was assessed via the Community Healthy Activities Model Program for Seniors (CHAMPS) questionnaire at baseline and 8 weeks.
Relative to controls, intervention participants reported significantly greater 8-week mean estimated caloric expenditure levels and minutes per week in MOD+ activity (p<0.04). Satisfaction with the PDA was reasonably high in this largely PDA-naive sample.
Results from this first-generation study indicate that hand-held computers may be effective tools for increasing initial physical activity levels among underactive adults.
通过运用最先进的交互式通信技术，有可能推动全民增加步行及类似的中等强度体育活动。然而，很少有系统的研究来评估手持电脑及类似设备对提高身体活动水平的功效。这项第一代研究的目的是评估手持电脑（即个人数字助理[PDA]）相对于标准信息对照组，在8周内提高中年及老年成年人中等强度或更剧烈（MOD+）身体活动水平的功效。
随机对照的8周实验。数据于2005年收集，并于2006 - 2007年进行分析。
设置/参与者：基于社区的研究，37名年龄在50岁及以上、起初活动不足的健康成年人，他们被随机分组并完成了8周的研究（干预组 = 19人，对照组 = 18人）。
参与者接受了一次指导课程，并获得一台预编程的PDA，用于每天监测他们的身体活动水平，并提供每日和每周的个性化反馈、目标设定及支持。对照组则收到适合其年龄的标准书面体育活动教育材料。
在基线和8周时，通过老年人社区健康活动模式项目（CHAMPS）问卷评估身体活动情况。
与对照组相比，干预组参与者报告的8周平均估计热量消耗水平和每周MOD+活动分钟数显著更高（p<0.04）。在这个大多对PDA不熟悉的样本中，对PDA的满意度相当高。
这项第一代研究的结果表明，手持电脑可能是提高活动不足成年人初始身体活动水平的有效工具。
