Strath Scott J, Swartz Ann M, Parker Sarah J, Miller Nora E, Grimm Elizabeth K, Cashin Susan E
J Phys Act Health. 2011 Sep;8(s2):S267-S274. doi: 10.1123/jpah.8.s2.s267.
Increasing physical activity (PA) levels in older adults represents an important public health challenge. The purpose of this study was to evaluate the feasibility of combining individualized motivational messaging with pedometer walking step targets to increase PA in previously inactive and insufficiently active older adults.
In this 12-week intervention study older adults were randomized to 1 of 4 study arms: Group 1-control; Group 2-pedometer 10,000 step goal; Group 3-pedometer step goal plus individualized motivational feedback; or Group 4-everything in Group 3 augmented with biweekly telephone feedback.
81 participants were randomized into the study, 61 participants completed the study with an average age of 63.8 ± 6.0 years. Group 1 did not differ in accumulated steps/day following the 12-week intervention compared with participants in Group 2. Participants in Groups 3 and 4 took on average 2159 (P < .001) and 2488 (P < .001) more steps/day, respectively, than those in Group 1 after the 12-week intervention.
In this 12-week pilot randomized control trial, a pedometer feedback intervention partnered with individually matched motivational messaging was an effective intervention strategy to significantly increase PA behavior in previously inactive and insufficiently active older adults.
提高老年人的身体活动（PA）水平是一项重要的公共卫生挑战。本研究的目的是评估将个性化激励信息与计步器步行步数目标相结合，以增加既往不活动和活动不足的老年人身体活动的可行性。
在这项为期12周的干预研究中，老年人被随机分为4个研究组中的1组：第1组为对照组；第2组为计步器10000步目标组；第3组为计步器步数目标加个性化激励反馈组；第4组为第3组的所有内容加上每两周一次的电话反馈组。
81名参与者被随机纳入研究，61名参与者完成了研究，平均年龄为63.8±6.0岁。与第2组参与者相比，第1组在12周干预后的每日累计步数没有差异。在12周干预后，第3组和第4组的参与者每天平均比第1组多走2159步（P<.001）和2488步（P<.001）。
在这项为期12周的试点随机对照试验中，计步器反馈干预与个性化匹配的激励信息相结合是一种有效的干预策略，可显著增加既往不活动和活动不足的老年人的身体活动行为。
