IMPACTS OF HIGH-INTENSITY INTERVAL TRAINING ON PHYSICAL FITNESS IN HANDBALL

ABSTRACT Introduction: Handball is a competitive sport with high demands on the physical fitness of its athletes, being physical exercise demands continuous quality improvement of its practitioners. Objective: Explore the effect of high-intensity interval training on physical fitness in young handball players. Methods: In this paper, 46 young handball players were randomly selected for the research. The volunteers were randomly divided into two different groups: the experimental group and the control group. The control group mainly performed regular physical exercises. While the experimental group performed a protocol with high-intensity interval training. Both groups underwent a basic fitness test before and after the experiment. All experimental data were statistically analyzed and discussed. Results: After 12 weeks of experimental intervention, the experimental group showed significant differences in three items, namely reentry sensitivity, vertical jump, and long position jump (P