Considering learning styles in technology enhanced learning seems to be a promising concept for making learning easier for students. However, contradictory opinions exist on this issue. In this paper, we aim at investigating the possible benefits of providing students with courses that fit their learning styles based on the Felder-Silverman learning style model, showing whether and for whom adaptivity can be helpful, how it can support students, and how effective adaptivity can be for students with particular learning styles. The results of the analysis, conducted with data from 147 students, showed that students with different learning styles benefit from adaptivity in different ways and extents. The findings provide deeper insights and help in understanding the effects and effectiveness of adaptive courses, considering different learning styles.