大学生通过空投和地面弹跳练习获得技能： TuJuggling集群随机试验的研究方案。

Practice organization is vital for motor acquisition, yet pragmatic evidence on how instructional constraints shape learning in authentic settings remains scarce. The TuJuggling protocol establishes a standardised assessment and training framework for complex bimanual skills in novices using an ecological dynamics perspective. In this cluster-randomised crossover trial, registered on ClinicalTrials.gov (Identifier: NCT07528924), 200 students will complete two 4-week juggling interventions: air-toss (A) and floor-rebound (B), separated by a 1-week washout. The primary outcome is a Global Compos