What is a necessary foundation for lower body and upper body strength in combat?

The necessary foundation for developing both lower and upper body strength in combat primarily hinges on explosive power. Explosive power refers to the ability to exert maximum force in a short period of time, which is essential in combat scenarios where quick, powerful movements can determine the outcome of engagements. This type of strength allows combatants to generate strength effectively during abrupt actions such as striking, grappling, or maneuvering.

While cardiovascular functioning is crucial for overall endurance and stamina in combat, it does not directly contribute to the immediate ability to generate strength in fighting scenarios. It supports prolonged physical activities but does not serve as the foundational characteristic for strength development required in combat situations. Instead, explosive power encompasses elements of speed, strength, and agility, making it integral for effective combat training.