The Lawn Tennis Association’s mini tennis (MT) is a modified version of tennis consisting of progressive stages; however, there have been few attempts to evaluate how MT might shape performance behaviours. Here, we examine effects of playing MT on the emergence of children’s match-play behaviours in 48 junior tennis players. Performance in 1010 match-play points were filmed and coded across 4 tennis stages (MT Red, MT Orange, MT Green and Full Ball), using a notational analysis system. Recorded performance variables included rally length, first serve percentage and shot type, for the purpose of analysing inter-stage comparisons. Results showed a series of specific adaptations to playing characteristics across the stages, including rally length, shot variety and serve success. MT Red rallies (7.36 ± 6.06) were longer than Full Ball rallies (3.83 ± 2.40), and a higher percentage of forehands were played at MT Red (66.40 ± 8.49%) than at Full Ball stage (45.96 ± 6.47%). Findings suggested that MT stages can afford children more opportunities to develop their skills and elicit different match-play characteristics than Full Ball task constraints. Coaches, therefore, should consider the nature of emergent adaptations when designing practice environments to facilitate learning in young tennis players. 相似文献
Advocates of educational reform often describe classroom instruction as inauthentic. That is, most classroom learning activities are structured around artificial contexts for learning, and students only engage in tasks and remember information at superficial levels. Some teachers are attempting to break traditional classroom practices by creating authentic contexts for learning. To date, most of the research on authentic classrooms has described the processes teachers have used to develop the classroom environment (learning activities, resources, etc.); however, few have examined authentic classrooms from the students' perspective: “What do students think about authentic classrooms?” The purpose of this qualitative study was to examine a unique learning environment at a large, Midwest high school to understand how students perceived that environment. Most of the students reported a positive experience and described the classroom as fun and exciting with real-world relevance. However, there were several students who did not share these views, and many students were not successful.
