Sentences with phrase «rectus abdominis muscle»

When doctors perform ultrasound - guided techniques on patients (such as a liver biopsy), they sometimes start scanning at the rectus abdominis muscle to distinguish between the internal oblique, transverses abdominis, and the peritoneal cavity.

Using a weightlifting belt in the deadlift may lead to more rectus abdominis muscle activity and less external obliques muscle activity.

When this muscle is exercised and layers of fat disappear from the abdomen, the exposed rectus abdominis muscle creates the look of a «six pack.»

Abdominal doming is when your rectus abdominis muscle (think 6 pack that runs up the middle) becomes dominant over your other ab muscles.

Comparing Swiss ball exercises, Marshall et al. (2010) assessed rectus abdominis muscle activity during the plank with arms on the Swiss ball, single - leg hip hyperextension from the push up position with legs on the Swiss ball, single - leg squat against a wall on a Swiss ball, Swiss ball roll outs, and Swiss ball full body rolls from a supine bent leg start position with the upper back on the ball, and rotating 90 degrees until the shoulder and upper arm rests on the ball.

Comparing Swiss ball exercises and isolated core exercises, Escamilla et al. (2010) measured upper and lower rectus abdominis muscle activity levels.

Using internal cues to focus on the muscle does not improve rectus abdominis muscle activity but leads to preferentially more external oblique muscle activity.

Assessing dynamic stabilisation exercises, Souza et al. (2001) measured rectus abdominis muscle activity and external oblique muscle activity during the supine dead - bug and two point kneeling bird - dog exercise.

They report that upper and lower rectus abdominis muscle activity ranged between 39 — 76 % and 38 — 81 % of MVIC.

Posterior pelvic tilt produced higher rectus abdominis muscle activity than abdominal hollowing in all positions.

There was no difference in rectus abdominis muscle activity between conditions.

Duncan et al. (2009) measured rectus abdominis muscle activity during the bent leg curl on stable (on the floor) and unstable (on a Swiss ball) surfaces.

Several studies have investigated the effect of relative load on rectus abdominis muscle activity.

Nonetheless, it appears that isometric core exercises such as the plank, as well as dynamic abdominal exercises such as the straight - leg sit up, produce greater rectus abdominis muscle activity than many upper body and lower body compound exercises.

Overall, using an unstable surface may increase rectus abdominis muscle activity.

Comparing compound exercises and trunk flexion exercises, Aspe et al. (2014) explored rectus abdominis muscle activity in a number of exercises including the front and overhead squat performed with 90 % of 3RM, as well as the swiss ball jack knife and straight - leg sit up.

They found no difference in rectus abdominis muscle activity between the curl up variations.

Konrad et al. (2001) reported that the reverse crunch displayed higher rectus abdominis muscle activity compared to the curl up, sit up, and decline curl up.

Additionally, Hildenbrand et al. (2004) reported that rectus abdominis muscle activity was higher in the bent - leg, unsupported curl up, Swiss ball curl up, and the Ab - Roller curl up device compared to Ab Slide roll out.

Overall, performing the bench press under unstable conditions appears to produce superior rectus abdominis muscle activity.

McGill et al. (2014) measured rectus abdominis muscle activity during the hanging leg raise with and without extended legs.

There was a trend towards higher rectus abdominis muscle activity in the long lever plank with posterior pelvic tilt compared to the long lever plank without posterior pelvic tilt (109 % vs. 90 % of MVIC).

The researchers reported that rectus abdominis muscle activity did not differ between low or high relative loads.

Goodman et al. (2008) compared the bench press performed on a stable bench and a Swiss ball, with 1RM but found no difference in rectus abdominis muscle activity between conditions.

In all conditions, rectus abdominis muscle activity was < 50 % of MVC.

Comparing isometric, isolated core exercises, Lehman et al. (2001) found that rectus abdominis muscle activity was no different between the isometric bent leg curl - up, bent leg sit ups, supine leg raises 25 cm from bench, and legs - strapped supine leg raises and shoulders - strapped curl - ups.

They found no difference in rectus abdominis muscle activity between conditions.

Assessing the effect of joint range of motion (ROM), Andersen et al. (1997) compared rectus abdominis muscle activity between sit ups performed with trunk flexion (at the lumbar spine) with sit ups performed with hip flexion.

Comparing the curl up and the posterior pelvic tilt exercise, Sarti et al. (1996) measured rectus abdominis muscle activity.

Comparing barbell squat variations, Comfort et al. (2011) explored rectus abdominis muscle activity in the front and back squats with 40 kg and found no difference between exercises.

Comparing compound exercises to the plank, Aspe et al. (2014) investigated rectus abdominis muscle activity during the back squat and overhead squat with 90 % of 3RM and in the front plank and side plank.

Interestingly, the curl up produced greater upper rectus abdominis muscle activity, while the posterior tilt exercise displayed superior lower rectus abdominis muscle activity.

Upper rectus abdominis muscle activity was higher in the Swiss ball roll out and prone jack knife and bent - leg curl up than in the Swiss ball prone knee - tuck, Swiss ball knee - tuck with rotation, and the bent - leg sit up.

They found increased rectus abdominis muscle activity when performing trunk flexion exercises with added elastic resistance from a portable device (Perfect Abs).

Willardson et al. (2009) also found no difference in rectus abdominis muscle activity between the back squat performed with 50 % and 75 % of 1RM.

Additionally, Konrad et al. (2001) found no difference in rectus abdominis muscle activity between the curl up with the hips and knees at 90 degrees of flexion, feet resting on a bench, and the bent leg unanchored sit up.

In practical terms, rectus abdominis muscle activity may be maximised by favouring the top portion of the trunk flexion sit up (also called curl ups or crunches) and the bottom and middle portions of the hip flexion sit - up.

They reported that rectus abdominis muscle activity was highest during the Swiss ball full body rolls.

Assessing the effects of surface stability in split squats, Andersen et al. (2014) explored rectus abdominis muscle activity in the split squat in stable (on the floor) or unstable (on a foam cushion) conditions, with 6RM.

They also reported that rectus abdominis muscle activity was superior when performing the overhead press compared to the back squat, deadlift and curl.

The rectus abdominis muscle activity in the ipsilateral side was no different to the two - handed swing in any phase on the movement.

Both rectus abdominis muscle activity and external oblique muscle activity were higher with the legs extended compared to with bent legs.

Generally, the rectus abdominis muscle activity was greater when performing the curl up or sit up with straight legs anchored or unanchored compared to the bent leg curl up or sit up, however no difference were reported.

Comparing the split squat with the back squat, Andersen et al. (2014) used a 6RM load in resistance - trained males and found that there was no difference between the exercises in respect of the rectus abdominis muscle activity but that the split squat displayed greater external obliques muscle activity than the standard back squat.

The long lever plank variations resulted in higher rectus abdominis muscle activity compared to the standard plank variations, irrespective of posterior pelvic tilt.

Overall, rectus abdominis muscle activity and external oblique muscle activity levels were relatively low.

In contrast, they found that the upper and lower rectus abdominis muscle activity ranged between 10 — 85 % and 20 — 90 % of MVC, respectively.

They reported superior rectus abdominis muscle activity in the contralateral (opposite) side when performing the standing cable press compared with the bench press.

They reported that rectus abdominis muscle activity was highest in the tire flip (69 — 87 % of MVIC) and atlas stone lift (76 — 77 % of MVIC).

Additionally, greater external resistance (thicker bands) led to greater rectus abdominis muscle activity and greater external oblique muscle activity.