hip flexor
The prime mover for hip flexion is the iliacus, and psoas major. However, there are other muscles that also contribute: rectus femoris, sartorius,and the TFL
psoas
Iliopsoas
Bring your leg up
Hip flexors mostly.
The antagonist of the glutes, or gluteus maximus, is the hip flexors. These muscles are responsible for flexing the hip joint, while the glutes are responsible for extending the hip joint. Strengthening both the glutes and hip flexors is important for maintaining balance and stability in the hips.
hamstrings and hip flexors
You use the front of the hip (hip flexors) Abdominals and quads (top of the thigh)
Hip flexors and the y-ligament also known as the iliofemoral ligament
yes
Quadriceps, hip flexors, calves. Additionally, biceps, triceps, abdominals, pectorals, and glutes
Technically speaking it's the abs. The agonist muscle in a situp is actually the hip flexors.
Using an exercise bike works your glutes and hip flexors, plus leg muscles.
Quads, hamstrings, calfs, hip flexors, shins, triceps, latissimus dorsi, erector spinae, abdonials
You want to work on tight hip flexors and spinal erectors they are in the shortened position pulling the pelvis anterior.