J Aging Phys Act. 2021 Oct 1;29(5):843-851. doi: 10.1123/japa.2020-0350. Epub 2021 Apr 8.
The aim of this study was to examine the construct and known-groups validity of the total score of five items adapted from the Community Healthy Activities Model Program for Seniors (CHAMPS) questionnaire to measure outdoor walking (CHAMPS-OUTDOORS) in older adults. Data from the baseline assessment of the Getting Older Adult OUTdoors (GO-OUT) trial were used. Construct validity of the CHAMPS-OUTDOORS used objective measures of outdoor walking (accelerometry-GPS), Ambulatory Self-Confidence Questionnaire, RAND-36, 6-min walk test, 10-m walk test, and Mini-Balance Evaluation System Test. For known-groups validity, we compared the CHAMPS-OUTDOORS of those who walked < or ≥1.2 m/s. Sixty-five participants had an average age of 76.5 ± 7.8 years. The CHAMPS-OUTDOORS was moderately correlated with total outdoor walking time (r = .33) and outdoor steps (r = .33) per week measured by accelerometry-GPS, and weakly correlated with Mini-Balance Evaluation System Test score (r = .27). The CHAMPS-OUTDOORS did not distinguish known groups based on crosswalk speed (p = .33). The CHAMPS-OUTDOORS may be used to assess outdoor walking in the absence of accelerometry GPS. Further research examining reliability is needed.
本研究旨在检验从老年人社区健康活动模式计划（CHAMPS）问卷中改编的五个项目的总分来测量老年人户外行走（CHAMPS-OUTDOORS）的结构效度和已知组别的有效性。使用了“让老年人外出（GO-OUT）”试验的基线评估数据。CHAMPS-OUTDOORS 的结构效度使用了户外行走的客观测量方法（加速度计-GPS）、活动能力自我信心问卷、RAND-36、6 分钟步行测试、10 米步行测试和迷你平衡评估系统测试。对于已知组别的有效性，我们比较了行走速度 < 或 ≥1.2 m/s 的人群的 CHAMPS-OUTDOORS。65 名参与者的平均年龄为 76.5 ± 7.8 岁。CHAMPS-OUTDOORS 与每周通过加速度计-GPS 测量的总户外行走时间（r =.33）和户外步数（r =.33）中度相关，与迷你平衡评估系统测试得分（r =.27）弱相关。CHAMPS-OUTDOORS 不能根据过街速度区分已知组别（p =.33）。在没有加速度计 GPS 的情况下，CHAMPS-OUTDOORS 可用于评估户外行走。需要进一步研究其可靠性。
