Kracht CL, Webster EK, Staiano AE A natural experiment of state-level physical activity and screen-time policy changes early childhood education (ECE) centers and child physical activity. BMC Public Health. 2020 Mar 24;20(1):387. doi: 10.1186/s12889-020-
Kracht CL, Webster EK, Staiano AE Relationship between the 24-Hour Movement Guidelines and fundamental motor skills in preschoolers. J Sci Med Sport. 2020 Dec;23(12):1185-1190. doi: 10.1016/j.jsams.2020.06.021. Epub 2020 Jul 5.
Kracht CL, Webster EK, Staiano AE Sociodemographic Differences in Young Children Meeting 24-Hour Movement Guidelines. J Phys Act Health. 2019 Oct 1;16(10):908-915. doi: 10.1123/jpah.2019-0018. Epub 2019 Sep 6.
Martins, C , Webster, E. K., Bandeira, P. F. R., & Staiano, A. E. (2022). Identifying Fundamental Motor Skills Building Blocks in Preschool Children From Brazil and the United States: A Network Analysis. Journal of Motor Learning and Development, 10(1), 9
Staiano AE, Webster EK, Allen AT, Jarrell AR, Martin CK Screen-Time Policies and Practices in Early Care and Education Centers in Relationship to Child Physical Activity. Child Obes. 2018 Aug/Sep;14(6):341-348. doi: 10.1089/chi.2018.0078.
Webster EK, Martin CK, Staiano AE Fundamental motor skills, screen-time, and physical activity in preschoolers. J Sport Health Sci. 2019 Mar;8(2):114-121. doi: 10.1016/j.jshs.2018.11.006. Epub 2018 Nov 24.
Physical Activity and Screen-Time Regulations in Childcare Centers: Influence on Young Children's Health Behaviors (Pause & Play) - Aim 2
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
