Core strength training differs from many traditional weight training routines by working both the lower back and abdominal muscles in unison. The same is true for the upper and lower body. All athletic movements incorporate the core in some way. Very few muscle groups are isolated. Instead the whole body works as a unit; core strength training endeavors to replicate this.
The benefits of core strength training are, greater efficiency of movement; improved body control and balance; increased power output from both the core musculature and peripheral muscles such as the shoulders, arms, and legs; reduced risk of injury (the core muscles act as shock absorbers for jumps and rebounds in basketball, for example); improved balance and stability; and overall improved athletic ability!