The purpose of this study was to analyse the relationship between cycling power production and core analytical variables, such as strength, stability, and kinematics during pedalling. 30 cyclists from three disciplines participated in this study, who performed a sitting stability test, a trunk flexor and extensors strength test, and a cycling power test (FTP), where trunk kinematics were analysed. Greater seated stability was found in mountain bike cyclists, a greater anterior thoracic tilt in road cyclists, and a greater range of lateral tilt in triathletes. Only significant correlations were found between thoracic anterior tilt and critical power. In conclusion, both the strength and the stability of the trunk had a low influence on the power production, although there are differences between the different cycling disciplines in the dimensions of the core.
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