After a 12-week training intervention comparing seated (long muscle length) and prone (shorter length) leg curls, the seated group showed significantly more hypertrophy in the hamstring muscles - especially the biceps femoris long head.

Maeo, S., Huang, M., Wu, Y., Sakurai, R., Sugiyama, Y., Kanehisa, H., & Miyamoto, N. (2021)

Greater hamstrings muscle hypertrophy but similar damage protection after training at long versus short muscle lengths.