Improving Intrinsic Core Stability

. Extrinsic Core vs Intrinsic Core. Understanding the concept of these two will bring a degree of concentration to your core routine that will give you more strength and prevent you from strengthening poor, compensated patterns. . In a nutshell, Extrinsic core such as the external abdominal Oblique and rectus abdomius, are phasic muscles that tend towards generating movement and power. . Intrinsic core muscles like internal abdominal oblique and transverse abdominus are more tonic, meant for stability, and help create intrabdominal pressure. You must have good activity of the intrinsic core if you ever hope to build strength on a solid foundation. .