Browsing by Author "Wang, Qi"
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Item Community based intervention effects on older adults’ physical activity and falls (Ready Steady 3.0)(2024-03-08) McMahon, Siobhan K; Lewis, Beth; Guan, Weihua; Hayes, Shannon; Wang, Qi; Rothman, Alexander J; skmcmaho@umn.edu; McMahon, Siobhan KLess than 14% of older adults perform physical activities recommended by the CDC and WHO, which include fall reducing exercises.The purpose of the Ready Steady 3.0 trial was to test the main and interaction effects of two types of behavior change change strategies within an 8-week physical activity intervention, on physical activity (PA) and falls. The two types of behavior change strategies interpersonally oriented (e.g., peer to peer learning and sharing of barriers and problem solving) or intrapersonally oriented (e.g., setting personal goals and creating action plans), based on theory and evidence. To test their effects, 309 adults ≥ 70 years old were randomized to 1 of 4 conditions in a 2 × 2 full factorial trial. All participants received two core intervention components: the Otago Exercise Program adapted for small groups and a PA monitor. All interventions were delivered during 8 weekly, small group, meetings in community settings. The primary outcome of PA, measured objectively, and secondary outcomes of falls and the quality of life were assessed at four time points: baseline and post-intervention: 1 week, 6 months, and 12 months. The data collected for Ready Steady 3.0 will be shared to enhance its understanding and to make it available for pooling of data with multiple trials to extend scientific findings beyond those available from a single study,Item Dynamic interactions between spatial change and travel behavior variation in old town fringe(Journal of Transport and Land Use, 2020) Zhou, Wenzhu; Li, Qiao; Li, Zhibin; Wang, Nan; Wang, QiOld town fringe area is changing in its spatial features, and these changes correspondingly result in variations in travel behaviors. Taking the spatial characteristics and travel behavior data of the Nanjing Old Town Fringe (OTF) area in 2010 and 2015 as an example, we conducted a comparative study for two years. First, based on the identification of the spatial range of OTF in these two years by using travel data mutation points and the Point of Information (POI) kernel analysis method, the significant change in the OTF area, from marginal areas in 2010 to non-marginal areas in 2015, was identified. Second, multiple logit models were used to evaluate the impact of the built environment and economic and social attributes of residents on the choice of travel modes, as well as the different impact factors. From the perspective of overall performance, with reference to the behavior of choosing motor vehicle travel, from 2010 to 2015, the significant correlation of factors in promoting residents to choose walking, cycling or public transit changed. Moreover, there were three different dynamic characteristics of this correlation change: (1) the correlation of factors was significant and stable from 2010 to 2015; (2) the correlation of factors was significant in 2010 but not significant in 2015; (3) the correlation of factors was not significant in 2010 but was significant in 2015. It was found that the correlated factors of fluctuation were mainly social attribute factors, for example, education, gender, age, whether having a driver’s license, etc. Therefore, in future research and practice, we need to focus on the impact of stable correlated factors (such as shortest distance to downtown, plot ratio, occupation, etc.) and factors with increasing correlations (such as bus coverage, gender, age, etc.). And the land-mix factor needs to be considered from both vertical and horizontal perspectives. This will have certain significance and help future development of OTF areas.Item HIV+ Youth in the Twin Cities may be Engaged in Case Management but not Retained in Medical Care(2018) Lou, Mengdi; Wang, Qi; Stumpf, Julia; Ravdin, Jonathan