Tag Archives: sit-ups

Want a strong core? Skip the 3- minute plank

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Recently, I walked by a packed evening kettlebell class, a room full of participants doing a terrific plank variation—slowly sliding a heavy weight in front of them from left to right, and vice versa. A plank is one of the gold standards for working the core in which you assume and hold a position. Sit-ups and crunches are no longer the norm for a great set of abs. Traditional core training sought to isolate a single area, such as the six-pack, which is problematic.

All movement originates through the core. The core is an integral part of the protective mechanism that relieves the spine of harmful forces during activities. Deep stabilizing muscles allow a protective mechanism for posture control and athletic performance.

The main reason sit-ups don’t help you is that they can damage the spine. The traditional sit-up, writes Dr. Stuart McGill in “Ultimate Back Fitness and Performance,” imposes about 730 pounds of compression on the spine. Those participants in the evening workout were shown ways to retire old concepts and learn from a great coach, in her presentation of fresher research: plank variations.

Secondly, planks recruit a balance of muscle from the front, sides and back of the body, as the core goes far beyond a six-pack. Even though Cher boasts about holding a three-minute plank, you don’t need to hold a plank that long. There are better ways to get strong. Once you can perform a 20-, 30- or 60-second plank, you can advance from a stability level to light loads and additional stimulus in a plank.

Here are two simple stability tests to determine your core strength before you add additional stimulus, as in that kettlebell class.

Forearm plank, 20 seconds

Forearm plank. All photos by Connie Aronson
  • Lie on the floor, with the feet flexed, toes towards the shins, and the elbows and forearms under the chest area. To begin, lift the body off the floor in a position in which the arms are perpendicular to the floor, and the elbows directly under your shoulders, hands under your face.
  • Brace the core, lock the knees and tighten the glutes.
  • Have a friend or partner place a long stick or broomstick in line with your spine.
  • Start the clock only when you are in straight body alignment.
  • Hold for 20 seconds.

Fail is any part of the body sagging away from the stick.

Pass is if your torso remains in full contact with the stick for 20 seconds without any noticeable quivering.

Anti-rotation Bird Dog

  • In a kneeling position with hands on the floor, have a friend or partner place a stick or broomstick in line with your spine.
  • To begin, raise the right arm up and extend it parallel to the floor.
  • Simultaneously raise the left leg up and extend it backward, also parallel to the floor.
  • Touch both the arm and foot back under the body to touch left elbow to right knee.
  • Return to the fully extended position for six repetitions. Repeat on the other side.

Fail is if at any point during the test, the body sags away from the stick, or it rolls off the back.

Pass is if you the body is in contact with the stick, and control is maintained throughout the test.

Straight arm plank with feet elevated

Example of an advanced plank, with increased involvement of the stabilizing muscles of the core.

Check out Idaho Mt. Express –

https://www.mtexpress.com/wood_river_journal/features/fitness-guru-want-a-strong-core-skip-the-3-minute-plank/article_72f3c06c-ded5-11ed-aea5-7f0302c07a5a.html

Trade sit-ups for partial curl-ups & planks

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Partial curl-up are a better way to get strong abs than sit-ups. Courtesy photo by Connie Aronson

Partial curl-up are a better way to get strong abs than sit-ups. Courtesy photo by Connie Aronson

My friend Claire is helping whip her new beau into shape, hitting the gym five days a week. Claire also has him doing dozens of sit-ups so he’ll get a movie-star six-pack.  For most people the first thing that comes to mind when you say “abs” is one muscle—the rectus abdominis. She means well, but doing hundreds of sit-ups are hard on your back because of devastating loads to your spine. In 2008, there were 3.4 million emergency room visits—an average of 9,400 per day, for back problems, according to the U.S. Department of Health and Human Services. Back problems are the fifth most common reason for all doctor visits in the US.  Trading the sit-up for safer and more effective abdominal work can help spare this outcome.

Dr. Stuart McGilll, a professor of spine mechanics and chair of the Department of Kinesiology at The University of Waterloo, points out that spine disks only have so many bends in them before they become damaged. Keep the bends for essential tasks, such a tying shoes, rather than using them in ab training, he recommends. The Army agrees. In 2011, after 30 years, the Army’s Physical Readiness and Combat Tests deemed the sit-up test as an ineffective assessment of a person’s core in relation to their battle strength.In sports that require repeated hyperextension—like gymnastics, diving, volleyball, weight lifting, golf, football, tennis and rowing—the incident of back injury is 11 percent, according to the International Journal of Applied and Basic Sciences. In football lineman, it may be as high as 50 percent. The types of injuries vary with age. In adolescent athletes, nearly 70 percent of lumbar spine injuries occur when forces are exerted on skeletally immature spines, whereas the majority of adult back injuries are related to muscle strain and disc disease.

If you want a stronger, tighter core, instead of full sit-ups, try the traditional crunch or many variations of a curl-up. Lifting your head and shoulders a few inches (around 30 degrees) off the floor and holding briefly is a good exercise to challenge the abdominal muscles while imposing a minimal load to the lumbar spine

Muscle  function
The four layers of abdominal muscles are like a woven basket encompassing the belly. The long vertical rectus abdominis runs vertically from the sternum to the pubis crest and is trained when you do an exercise such as the crunch. The external and internal oblique muscles rotate and side-bend the trunk. The deepest layer, right below your belly-button, named the transversus abdominis, plays a significant role in stabilizing the trunk, specifically the spine, during all movement. All the abdominal muscles hold in our organs and help us in forced exhalation, as in coughing, urinating or giving birth. But the most critically important function throughout the day—writes Judith Lasater, Ph.D., P.T., author of Yoga Abs Moving From Your Core—is stabilization, to keep the back free of pain and the abdomen strong.

Very few sports require fully flexing the spine, as in a full sit-up. Rather, the core transmits power from the hips through the torso as in pitching a ball or running. Here, the abdominals work together with muscles in the lower back, hips and pelvis, known as the core, stabilizing the spine. The core and spine can handle large forces vertically, but not in extreme flexion, as in sit-ups, twisting or bending.

For example, a 154-pound man standing upright has 154 lbs. of pressure on the L3-L4 disc, which the spine can easily handle. Sitting and bending forward 20 degrees, the pressure on L3-L4 bumps up to 264 lbs. In the bent-knee sit-up the pressure almost triples, up to 396 lbs. Simply modifying the sit-up to a partial curl-up, with the head and shoulders lifting a few inches off the floor, eliminates these huge compression forces on the discs.

In a June 2009 New York Times article titled “Core Myths”, the marginalized view of the core being “abs “was challenged by McGill. He compares the spine to a fishing rod supported by muscular guy wires. If all the wires are tensed equally, as in the whole lumbo-pelvic-hip complex, the rod stays straight. A core exercise program should emphasize all the muscles that girdle the spine, not just the abs, to ensure balanced strength. In his lab, he’s demonstrated how an average sit-up can exceed the limit known to increase the risk of back injury in normal American workers.

The full sit-up is three muscle actions: neck flexion, spine flexion and hip flexion. It’s important to be able to sit up, no doubt, but repeated sit-ups do place hundreds of pounds of compression on the lumbar disks. Hooking or holding the feet down stresses the low back even more. Ironically, the bent-knee sit-up has been taught to minimize the action of the hip flexor in the sit-up, though it is not correct. The abs can only curl the trunk. The sit-up is a strong hip flexor exercise (used in climbing stairs or skipping), whether the knees are bent or straight.

McGill says that the following three exercises, done regularly, can provide a well-rounded, core-stability program: practice the curl-ups, learn how to do a side-plank (lie on your side and raise yourself in a straight line) and try the bird-dog (kneel on your hands and knees, legs hip-width apart, raise an alternate arm and leg to hip height and hold for four or six seconds).

Claire tried all three, smitten over both the planks and her slim new guy.

http://theketchumkeystone.org/2014/05/29/health-happiness-trade-sit-ups-for-partial-curl-ups/?utm_source=rss&utm_medium=rss&utm_campaign=

A Changing Army: Ditching Sit-ups After 30 Years

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Soldiers can forget about sit-ups. For the first time in 30 years, the US army has up-dated its fitness testing to better prepare soldiers for the demands of combat. Lt. General Mark Hertling, the general in charge of the Army’s initial training, collaborated with a 16 member team to revise the Army’s Physical Readiness and Combat tests. Going are the full sit-up test, and the 2 minute push-up and 2 mile run are being revised. Instead, the first test will expand from 3-5 events. The full sit-up goes for several physiological and safety reasons: they don’t do much to strengthen the core to translate to battle strength, and the full flex movement, the actual crunch part of the sit-up, puts an unhealthy strain on the back at its weakest point. The push-up  pace increases to assess upper body endurance, and the run gets shortened to 1.5 miles to assess the anaerobic capacity needed for high intensity bursts in the battlefield. “This is about training smarter, not training more”, Hertling said. Added are a no-rest standing long jump and 1 minute row to look at immediate fatigue and failure.

The out-dated PT test” does not adequately measure components of strength, endurance and mobility. The events have a low co-relation to the performance of warrior tasks and battle drills” said Hertling, who holds a master’s degree in exercise physiology.

Combat veterans trying out the new tests say they are tough. For the Army Combat Readiness test they are in full combat gear while carrying a rifle. They have to excel at sprints, move through hurdles and maneuver balance beams while holding heavy ammo tins, drag a 180 pound sled, and run  sprints.

Specific gender and age standards, from under age 30 to 60, for the test scores will align with the American College of Sports Medicine and Cooper Institute to establish standards and a thorough review before the tests are approved. “Soldiers like to be challenged. This will definitely challenge them”, Hertling said.

Training for the Rest of Us/ Bringing Boot Camp Home

Most of us want to look and feel good and the only battle we face is aging well. But we can take elements of the new testing to inspire us to work a little harder in our work-outs by going beyond where we thought we could, into the “somewhat hard” zone, even if it is only 30 seconds or a minute. High-intensity exercise toughens you up, writes Dr. John Ratey,author of Spark: The Revolutionary New Science Of Exercise and The Brain.”It’s why we climb mountains and sign up for boot camp and Outward Bound trips.” Studies show that by adding a single spurt of sprinting for 30 seconds, on a bike for example, generates a 6 fold increase in human growth hormone, the ” fountain of youth” hormone. Remember, he writes, that by middle age these hormones dwindle to 1/10 of what they were during childhood. The sprints and agility tests that the Army will practice build fast-twitch muscles, which add power to movement. For us mere mortals, these new muscle fibers enhance our metabolism and help us become better at burning fats and carbohydrates for up to 4 hours after training, as well as lowering blood pressure.

Keep the push-ups.Push-ups are a great full body exercise strengthening many muscles at once: abs, front of your legs, arms and back. According to the American College of Sports Medicine fitness test, a 40-49 year old  female or male  performing more than 18 or19  push-ups, respectively, with the chin touching the floor and back straight, scores an “above average” rating. The tests are designed to help you develop a fitness program based on your results. The ACSM and Cooper Institute will also be involved in the Army’s establishment of test standards.

Connie Aronson is an American College of Sports Medicine Health & Fitness Specialist and personal trainer located at the YMCA in Ketchum, Idaho