Static Loading refers to resistive forces acting on a body at rest, with muscles engaged to maintain a fixed position against resistance. It involves no joint or limb movement, focusing on sustaining postures or holding weights for extended periods. This type of loading enhances muscular endurance, core stability, and joint protection, making it essential for improving physical endurance and stabilization in fitness and strength training routines.

https://www.posturedergonomics.com/articles/the-hidden-hazard-static-muscle-loadings-impact-on-body-and-workplace-ergonomics