ABSTRACT Introduction: Long-distance runners cannot achieve training effects by relying only on speed endurance training. Core exercises significantly improve stability, allowing learning of techniques with superior movement efficiency. Several factors that affect the development athletes’ special skills are considered, highlighting their main strengths and working intermediate characteristics....

[Purpose] This study was conducted to investigate the effect of four spine stability exercises on the thickness of the internal and external oblique abdominal muscles, the transverses abdominis, and the multifidus muscles. [Subjects and Methods] Forty healthy adults were enrolled and randomly allocated to four groups. Ten participants performed bridge exercises (BE) while lying on their back; 1...