Which muscular groups are more likely to sustain injury during movements?

The option regarding smaller muscle groups and tendons/ligaments is correct because these structures are often key players in providing stability and support during movements. Smaller muscles and connective tissues, such as tendons and ligaments, are more vulnerable to injury since they may not be able to handle the same loads or forces as larger muscle groups.

In many exercises, small muscle groups are responsible for fine-tuning movements and maintaining proper joint alignment. When these muscles become fatigued or overextended, they can lead to imbalances and increase the risk of injury. Tendons and ligaments, in particular, can sustain injuries due to their limited blood supply, which can slow down recovery and healing, making them susceptible to strains and tears, especially during high-intensity workouts typical in CrossFit.

Large muscle groups or leg muscles can also sustain injuries, but they typically have a greater ability to absorb and distribute forces due to their size and strength. Core muscles play a crucial role in stability and support but are less likely to suffer isolated injuries compared to smaller muscle groups. Thus, the emphasis on smaller muscle groups and connective tissues reflects their unique risks associated with injury during various movements.