What is fundamental to achieving balance about the frontal plane in training?

Core stability is essential for achieving balance about the frontal plane because the core muscles provide the necessary support and control for the body's movements. The frontal plane divides the body into front and back halves, and maintaining balance in this plane involves coordinated movement of the upper and lower body as well as stability through the torso. A strong and stable core allows athletes to maintain proper alignment and posture during lateral movements, which are crucial for sports performance and functional training.

Having a stable core helps to engage muscles that counteract any forces that may disrupt balance. This stability enables individuals to perform complex movements more efficiently and reduces the risk of injury, as the body is better equipped to manage forces acting on it during dynamic activities. While upper body strength, hip rotation, and flexibility training all play important roles in overall athletic performance, they are not as directly linked to balance specifically within the frontal plane as core stability is.