Exploring quadriceps activity variations in women: the role of seated posture during stair climbing

VM muscles were significantly decreased after maintaining a sitting posture during descending stairs of SAC group (<i>p</i> = 0.047). In conclusion, this study indicates that maintaining a SAC sitting posture for a certain period causes a temporary decrease in muscle activity of the VM muscle during descending stairs. This provides important implications for early treatment to manage knee pain and strengthen quadriceps muscles in women. Future studies should focus on groups with patellofemoral pain syndrome or knee pain to better understand the impact of sitting posture on quadriceps activity.