Acute Effects of a Static Vs. a Dynamic Stretching Warm-up on Repeated-Sprint Performance in Female Handball Players.

This randomized cross-over study examined the effects of typical static and dynamic stretching warm-up protocols on repeated-sprint performance. Thirteen young female handball players performed a 5 min aerobic warm-up followed by one of three stretching protocols for the lower limbs: (1) static stretching, (2) dynamic-ballistic stretching, and (3) no stretching before performing five all-out sprints on a cycle ergometer. Each protocol was performed on a different occasion, separated by 2-3 days. Range of movement (ROM) was also measured before and after the warm-up protocols with a sit-and-reach test. Fixed and random effects of each stretching protocol on repeated sprint performance were estimated with mixed linear modeling and data were evaluated via standardization and magnitude-based inferences. In comparison to no stretching, there were small increases in ROM after dynamic stretching (12.7%, +/- 0.7%; mean, +/- 90% confidence limits) and static stretching (19.2%, +/- 0.9%). There were small increases in the average power across all sprints with dynamic stretching relative to static stretching (3.3%, +/- 2.4%) and no stretching (3.0%, +/- 2.4%) and trivial to small increases in the average power in the 1st and 5th trials with dynamic stretching compared to static stretching (3.9%, +/- 2.6%; 2.6%, +/- 2.6%, respectively) and no stretching (2.0%, +/- 2.7%; 4.1%, +/- 2.8%, respectively). There were also trivial and small decreases in power across all sprints with static relative to dynamic stretching (-1.3%, +/- 2.8%) and no stretching (-3.5%, +/- 2.9%). Dynamic stretching improved repeated-sprint performance to a greater extent than static stretching and no stretching.