A sports science research team wants to investigate the acute effects of pre-exercise warm-up modalities on sprinting performance. They want to study if youth academy players achieve faster times (in seconds) on a 100m sprint task after completing a 10-minute dynamic stretching routine compared to completing a 10-minute static stretching routine. The study will be conducted at a youth football academy with 120 players on roll.
Write a directional (one-tailed) alternative hypothesis for this study.