Strengths and Limitations
This study has several strengths, including the use of a multitheoretical framework, deep-level cultural tailoring, an underrepresented racial minority sample, and an objective measure of PA. The study design allowed us to compare the effects of engagement with different types of tailored behavioral sessions (eg, diet- vs PA-related contents). However, 1 limitation is that our study design did not allow us to differentiate the unique or additive effects of different types of tailoring (eg, tailoring around parentings vs deep-level cultural factors). Furthermore, because the web-based comparison program included links to external websites, we were unable to measure the log-in duration in a comparable manner with the web-based intervention. Decisions around selecting an appropriate comparator remain a central issue in the literature on tailored interventions [Another limitation of this study is that adolescents were not directly involved in the web-based intervention, which may have weakened the overall impact of the intervention. Despite these limitations, the web-based tailored intervention integrated several novel tailoring constructs, including expanding upon the use of positive parenting practices and deep-level cultural tailoring, and found positive effects of engagement on parent MVPA. Although previous tailored studies have drawn from a relatively narrow range of theories and constructs [