BACKGROUND The tennis serve is a complex stroke characterized by a series of segmental rotations involving the entire kinetic chain. Many overhead athletes use a basic 6-stage throwing model; however, the tennis serve does provide some differences. EVIDENCE ACQUISITION To support the present 8-stage descriptive model, data were gathered from PubMed and SPORTDiscus databases using keywords ten...

We report on a written measure of multiplicative double counting (mDC), form children’s reasoning. Our aim is to apply theory students’ cognition validate for grade 3–8 students as proxy interviewing. The 4-item consists hint-free and hint-containing word-problems, following the fine-grain method that distinguishes prompt-dependent from prompt-independent stage. Using mixed methods, we analyzed...