Balancing and maintaining a streamlined body position are critical in
swimming. Being able to control your body improves efficiency and allows
swimmers to move through the water with minimal resistance. To achieve this
position however, swimmers need to have strength and control of the muscles
through the middle part of their body – the area known as core. This muscles in
short are: the erector spinae muscles, the internal and external oblique
muscles, the transverse abdominis, the rectus abdominis, and many other muscles
that attach to and control the pelvis and spine, such as those that flex and
extend the hip.
