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Key exercises give your body a ‘core foundation’

By Gabriella Boston
Washington Post

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  • Getting started

    Set out by doing 10 reps of each exercise. Then as you get stronger, increase to two sets of 10 reps of each exercise. The following are cues to ensure proper form.

    • Bird dog: On your hands and knees (in table-top pose), stay centered with shoulders over hands and hips over the knees. Raise the right arm forward until the hand is at the same height as the shoulder. Be careful not to shift hips laterally or extend the back out of a neutral position. “Reach” the leg behind (vs. lifting it). Keep the core engaged and ensure the “reaching” of the leg is coming from the glutes. Hold for a few seconds and then switch sides.

    • Dead bug: Lie flat on the back with arms along your sides. Lift the right knee toward the chest while lifting the left arm toward the floor behind you. Bring the knee and arm back to starting position. Switch sides. Maintain a neutral posture in the lower back by pulling the navel toward the spine.

    • Side-lying plank: Lie on your right side with knee and elbow bent, and then push into the right forearm and right knee to lift the hip off the ground. This is the least taxing variation of side-lying plank. Keep the right hip forward and up, maintaining a straight line from the knee up through the hip and shoulder on the right side. Hold for a few seconds and rest. Repeat 10 times and then switch sides.

    • Bridge: Lying on the back with the knees bent and the feet about hip-width apart, lift the hips gently off the floor. Engage through the glutes when lifting. This pose has you moving opposite to the flexed position you are in while sitting at a desk.

    • Narrow squat: Start by standing with your legs hip-width apart. While maintaining a straight back, sit back as far as you can (as if you were sitting down in a chair) into the squat. Keep the shin relatively upright and avoid poking the knees out in front of the feet, as that can be stressful on the knees.



Core, core, core. Yes, we hear it ad nauseam: “You need to strengthen the core” or the other favorite, “It’s all about the core.”

But what does it really mean?

There is no clear medical definition of core, but fitness trainers use the term to describe the muscles of the trunk – front and back.

“Many people associate ‘core’ with abs and maybe lower back, but from a more global perspective, it includes all the supportive muscles of the spine,” says Robert Gillanders, an endurance athlete and physical therapist at Sports + Spinal Physical Therapy in Washington, D.C.

“And part of the reason the core muscles are so important is because the spine is not a fundamentally stable structure,” he says.

Core muscles are important for athletic performance, in particular, because they ensure efficient transfer of energy from the powerful lower body to the less bulky upper body, says Stephen Burgett, a personal trainer certified by the National Strength and Conditioning Association.

But it’s also a key consideration for aging adults and seniors. “A strong core also enhances balance and stability. Thus, it can help prevent falls and injuries during sports or other activities,” the Harvard Medical School has reported. “In fact, a strong, flexible core underpins almost everything you do.”

Crunches ‘overrated’

So: How to train the core?

Many experts agree that traditional crunches are not the way to go.

“They are overrated,” says Burgett. “And the way many people do them, there is way too much range of motion and they end up complaining about back pain.”

And, he says, the key to functional fitness is to find a way to build muscle that supports daily activity – of which crunching in a fetal position probably is not one.

Instead, Burgett works on exercises such as side-lying planks to help build the lateral muscles of the trunk and single-leg bridges with hip extensions to work the back and glutes.

Gillanders approves. It’s important to comprehend the many dimensions and layers of core muscles, he says. If you were doing only crunches, for example, you would be neglecting those lateral muscles of the core as well as muscles of the back.

No need to isolate abs

In the trunk, like elsewhere in the body, there are big, small, front, back, side, surface and deep muscles – and for the best outcome for fitness and wellness, he says, all of them need to be worked to “fire appropriately.”

For example, there are the rectus abdominis (the six-pack) and underneath them are the transverse abdominis (equally important but not visible to the naked eye). Then there are the big back muscles such as the erector spinae and the much smaller and local muscles such as the sectional muscles between the vertebrae.

Gillanders points out that the smaller, more local muscles often require subtle movements – like “bringing the navel toward the spine” or “bracing with the pelvic floor” – that don’t necessarily fit the idea of “workout exercises.”

“Connecting with those movements is a form of mental gymnastics,” Gillanders says.

Miller says that doing “abs” in isolation is completely unnecessary if you are looking to improve core strength.

“If you have a properly designed resistance training program with lunges and squats you don’t need to do abs,” Miller says.

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