부산대학교 도서관

High-intensity interval training (HIIT) has been for the last decade one of the most popular modes of training. While it has its origins in athletic training, it is also now appearing in public health and clinical exercise sciences for patients with chronic diseases. More recently, youth athlete studies have been conducted to evaluate the benefit for this population group. High-intensity interval training is not without some controversy: firstly, the range of exercise intensities that comprise HIIT is still not agreed; and secondly, most measurements focus on performance with little attention on the casual mechanisms of change. Other aspects related to whether HIIT saves the athlete training time are fiercely debated. This chapter starts with an examination of definitions and the concept of HIIT before presenting the case for HIIT interventions in youth athletes, and finishes by highlighting gaps in the knowledge base. Critical to the understanding of this topic is the lack of inferential experimental designs to determine performance change.