The difference in muscle power between dominant and non-dominant leg in soccer has beenpreviously studied. There is no consensus on which leg is stronger or whether a differenceexists or not. Previous research conducted measurements in a seated starting position whichdoes not conform to the soccer player's main activity.The purpose of this study was, in a group of soccer players in Swedish first and seconddivision, to describe and compare the maximum muscle power between dominant and nondominantleg. Measurements were performed in a horizontal starting position as this givessimilar muscle length ratio as when standing. The machine used during the measurements wasGenesis Single from Inmotion Intelligence. The study was conducted with a descriptive andcomparative cross-sectional design. The sample consisted of a group of male soccer players inthe Swedish first and second division.The results of the study showed no significant difference in peak muscle power betweendominant and non-dominant leg. The angle of knee flexion in which knee flexors and kneeextensors develop maximum muscle power, did not differ between dominant and nondominantleg. The results showed that knee extensors did not produce maximum musclepower at the same degree of knee flexion as the knee flexors did. This applied to bothdominant and non-dominant leg. Football is a side dominant sport, but the study's resultssuggest that football practice will not lead to muscular imbalance between dominant and nondominantleg.