Machine Leg Curl
MachineStrength
The Machine Leg Curl is a strength exercise performed on a dedicated leg curl machine, where you lie face down and curl your heels toward your glutes by flexing the knees. Its primary purpose is to isolate and strengthen the posterior thighs, particularly the hamstrings, while minimizing involvement from other muscle groups. It benefits athletes, bodybuilders, and general fitness enthusiasts seeking to improve hamstring power, knee stability, and lower body balance, requiring only access to the machine.
How to Perform Machine Leg Curl
- 1Adjust the machine so the leg pads rest just above your heels and the knee pivot aligns with your knees; lay with your stomach flat against the pad.
- 2Hook your ankles behind the leg pads with heels together and toes pointing outward slightly.
- 3Grasp the handles at your sides for stability; keep your hips and upper body pressed firmly into the seat.
- 4Inhale and maintain a slight arch in your lower back; engage your core.
- 5Exhale as you flex your knees to curl the pads toward your glutes, squeezing your hamstrings at the top.
- 6Pause briefly at peak contraction, then inhale as you slowly extend your legs back to the start position without locking knees.
- 7Repeat for desired reps, then safely exit by extending legs fully before standing.
- 8Key form tips: Keep movement slow and controlled (2-3 seconds up, 3-4 seconds down); avoid lifting hips off the seat or using momentum; focus on hamstrings, not calves—point toes out if calves dominate. Common mistakes: arching back excessively or partial range of motion.