
đ„ The SIDE BEND ranked #1 for obliques by a wide margin in study 3, the only one in which it was included. Hands behind or beside your head, but not pulling your head forward, is a good compromise between the two. Keeping your arms straight or nearly so in the over-the-head position provides greater resistance than arms folded on your chest. Arching your back on a ball provides for a longer range of motion than a traditional crunch. đ„ The STABILITY BALL CRUNCH, a top five abdominal exercise, ranked high in the two studies (1 & 2) in which it was included. With virtually no resistance, twisting can stretch your core, but itâs not adding oblique muscle or subtracting fat. đ BROOMSTICK TWIST This old-school âwaist trimmerâ ranked the worst of any supposed ab exercise tested. None seem to be in production anymore, but if youâre tempted to grab one on eBay, donât. Several devices were tested in studies 1, 2, and 5. Step right up, and behold the miracle gadgets! Guaranteed to easily melt away fat and sculpt in abs! Or so the infomercials promised. đ AB ROCKER, AB CIRCLE PRO, and AB REVOLUTIONIZER.

We suspect this exercise-which increases tension the more you contract but can lose it quickly afterwards-is difficult to do in a manner that sustains a lot of ab activation. exercise tubing pull) This is a crunch while holding a band or tubing behind or above your head. The same can be said for sit-up variations, like decline sit-ups, Roman chair sit-ups, etc. The sit-up involves the hip flexors too much and just isnât a very effective abdominal exercise. But then the verdict was already in last century, and it keeps coming in, again and again and again. đ SIT-UP The sit-up was only included in study 4, and it didnât fair well. You can also start with straight legs and bend them as you fatigue. Keep your legs bent until youâre strong enough to use straight legs. â The straighter (and longer) your legs are, the greater the resistance. (Itâs also contrary to much âexpert advice,â which incorrectly tells you to keep your torso rigidly horizontal.) Doing it in this way, without swinging, maximally activates your abs. â The important thing is to raise your knees as high as possible so that your butt comes up and your spine curls forward. (For good measure, hereâs EMG study 5 that ranked it the highest for rectus abs of any ab exercise.) You can also do these while simply gripping an overhead bar, but donât if your grip is the weakest link. Whether performed hanging with arm straps or in a captainâs chair with your forearms balanced on pads, leg raise with your upper body vertical was the only exercise to rank high in all four studies-though, other than the crunch, it was the only exercise in all four studies. Best for obliques: pike (with Power Wheel). Second for lower abs: vertical leg raise (hanging). The roll-out (with Power Wheel) nearly tied it and was best for lower abs and second best for external obliques.

The incline curl-up (called âincline reverse crunchâ) ranked best for upper abs.

The results can be confusing with sometimes conflicting studies. Abdominal exercises have been researched a lot.
