“…Each study population consisted of overweight and obese adults with sample sizes ranging from 38 to 15,310. Inter-ventions varied widely, with different types of apps and wearables tested, multiple conditions implemented (Burke et al, 2011; Jakicic et al, 2016; Spring et al, 2017; Svetkey et al, 2015; J. G. Thomas et al, 2017; Turner-McGrievy et al, 2017), and elements such as coaching (Svetkey et al, 2015; Toro-Ramos et al, 2017), nutrition education (Burke et al, 2011; Toro-Ramos et al, 2017), website integration (Godino et al, 2016; Jakicic et al, 2016), and group sessions (Siriwoen et al, 2018; Spring et al, 2017) incorporated that differed from study to study.…”