%0杂志文章@ 1438- 8871% I Gunther Eysenbach使用智能手机技术监测一万步计划中的身体活动:配对病例对照试验A Kirwan,Morwenna, Duncan,Mitch J %A Vandelanotte,Corneel A Mummery,W Kerry +身体活动研究中心，健康和社会科学研究所，cq大学，布鲁斯高速公路18号楼，北洛克汉普顿，4702，澳大利亚，61 749232546，m.kirwan@cqu.edu.au %K智能手机%K健康行为%K体育活动%K匹配病例对照研究%K干预%D 2012 %7 20.04.2012 %9原始论文%J J医学互联网决议%G英语%X背景:网站提供的体育活动干预成功地产生短期行为改变。然而，参与和保留这些项目的参与者的问题阻碍了长期的行为改变。访问在线内容的新方法(例如通过智能手机)可能会提高这些干预措施的参与度，从而提高项目的有效性。目的:衡量新开发的智能手机应用程序在改善网站提供的体育活动计划(10000步，澳大利亚)现有成员的健康行为方面的潜力。这项研究的目的是:(1)检查智能手机应用程序对自我监测和自我报告的身体活动水平的影响，(2)测量应用程序的感知有用性和可用性，(3)检查应用程序的感知有用性和可用性与其实际使用之间的关系。方法:所有参与者都是一万步计划的现有成员。我们通过电子邮件招募了干预组(n = 50)，并指导他们在智能手机上安装应用程序并使用3个月。该小组的参与者可以使用智能手机应用程序或10,000 steps网站记录他们的步数。 Following the study, the intervention group completed an online questionnaire assessing perceived usability and usefulness of the smartphone application. We selected control group participants (n = 150), matched for age, gender, level of self-monitoring, preintervention physical activity level, and length of membership in the 10,000 Steps program, after the intervention was completed. We collected website and smartphone usage statistics during the entire intervention period. Results: Over the study period (90 days), the intervention group logged steps on an average of 62 days, compared with 41 days in the matched group. Intervention participants used the application 71.22% (2210/3103) of the time to log their steps. Logistic regression analyses revealed that use of the application was associated with an increased likelihood to log steps daily during the intervention period compared with those not using the application (odds ratio 3.56, 95% confidence interval 1.72–7.39). Additionally, use of the application was associated with an increased likelihood to log greater than 10,000 steps on each entry (odds ratio 20.64, 95% confidence interval 9.19–46.39). Linear regression analysis revealed a nonsignificant relationship between perceived usability (r = .216, P = .21) and usefulness (r = .229, P = .17) of the application and frequency of logging steps in the intervention group. Conclusion: Using a smartphone application as an additional delivery method to a website-delivered physical activity intervention may assist in maintaining participant engagement and behavior change. However, due to study design limitations, these outcomes should be interpreted with caution. More research, using larger samples and longer follow-up periods, is needed to replicate the findings of this study. %M 22522112 %R 10.2196/jmir.1950 %U //www.mybigtv.com/2012/2/e55/ %U https://doi.org/10.2196/jmir.1950 %U http://www.ncbi.nlm.nih.gov/pubmed/22522112