Knee ACL Ligament Injury Prevention: Ultimate Frisbee Training Part 7 - “Bridging Hamstring Curl”
Lie on the ground with the stability ball under your heels with your legs straight and your toes pointing up. Engage your inner core muscles below the belly button. Then extend your hips by squeezing your butt and lifting it off the ground. Then bring the ball in towards you by flexing your knees and hold for a second and then straighten your legs back to the start position while keeping your butt up and hips extended. Keep your inner core engaged the entire time. Start by doing 3 sets of 10 repetitions and then progressing it to 3 sets of 15 to 20 repetition 4 times per week. This is great for strengthening the hamstring muscles along with your glutes and core stability muscles to help protect your ACL knee ligament."