Targeting your iliopsoas, not your rectus abdominis, the lying straight leg raise is an isolation pull exercise that activates all hip flexor muscles.
Great for core development, the captain's chair leg and hip raise is a compound hip-and-waist-flexion exercise that targets your rectus abdominis.
A compound leg and core exercise, the stability ball jackknife targets your iliopsoas (hip flexors). Your abs contract dynamically only with waist flexion.
An advanced core exercise, use the standing ab wheel rollout only after you have mastered the walkout, front plank, and wheel rollout on your knees.
The barbell rollout is an great auxiliary core exercise that targets your iliopsoas (hip flexors), not your rectus abdominis (which acts as a stabilizer).
The hanging straight leg raise is an isolation pull exercise that targets your iliopsoas (hip flexors), not your rectus abdominis (abs). Your abs only act as...
The stability ball leg extension crunch combines an isolation push exercise (leg extension) with an isolation pull exercise (crunch) to produce a rare compound...
The bicycle crunch was ranked in one study as the most effective exercise for your abs and the second most effective exercise for your obliques!
The v-up is an advanced core exercise that targets your rectus abdominis, while your obliques, hip flexors, adductors, and rectus femoris work as synergists.
Target your iliopsoas (hip flexors) with the seated knee raise, also known as the seated knee-up. Various leg muscles act as synergists.
A compound pull exercise for your core and legs, use the decline twisting sit-up to work your abs, obliques, hip flexors, and hip adductors.
Target your iliopsoas (hip flexors) with the lying alternating knee raise. Your rectus abdominis only acts as a stabilizer.