: Dropping from a box and immediately jumping upward upon landing.
: The brief transition period between stretching and contracting. In explosive plyometrics, this phase must be extremely short (often 0.1–0.2 seconds) to prevent the dissipation of stored energy.
: A rapid, forced involuntary stretch that accumulates elastic energy in the muscles and tendons.
: An upper-body variation focusing on rapid force production. 6. Conclusion