The motivational process of physical education (PE) in schools is significantly influenced by social factors, as demonstrated by a number of research based on self-determination theory (SDT). As a proximal factor affecting students' learning motivation, the relatedness support of dancesport teachers plays a key role in promoting the learning motivation and sustainable development of dancesport students. This research aims to test the validity of the second-order model of perceived teacher relatedness support behavior (RSB) and investigate how students' perceptions of their professional teachers directly or indirectly predicted their motivation to learn dancesport. To validate the relationship between the higher-order model and perceived teacher RSB among dancesport majors, this study used the structural equation modeling method for validation and 302 undergraduates majoring in dancesport participated in this investigation. The results showed that students' perceived teacher relatedness support was positively related to intrinsic, integrated, identified, and introjected regulations during dancesport learning and negatively related to external regulation and amotivation. These findings revealed the importance of teacher RSB in dancesport. And this study provides a practical reference for improving the teaching effectiveness of dancesport in universities, promoting harmonious teacher-student relationships, and inspiring students' learning motivation in dancesport. At the same time, it also lays a research foundation for the reform of dancesport teaching in universities and the system of dancesport talent training programs.
These datasets described the data of the Motor Performance Index for 7 years old kids in Malaysia based on Malaysia's physical fitness test SEGAK. This database has been designed and created with data analysis to create the index from the factor and variable of the test and the test was conducted in the majority of the national primary school in Malaysia. Gender, state of origin, and residential location of the school were the factors used to categorize the participant of the test. The factor of age, weight, height, body mass index (BMI), power, flexibility, coordination, and speed were used for the measurement to relate with the participant's physical fitness. Kids Motor Performances Index data can be reused for talent identification in sport talent scout and to create a baseline for kid's biology growth specifically in gross motor skills and cognitive growth measurement.