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Understanding stretching

Understanding stretching
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There’s a lot of incorrect (and downright confusing) information about stretching out there. It can leave you with more questions than answers: Is ballistic stretching bad? What’s the difference between active stretching and dynamic stretching – or are they the same thing? It’s understandable if you’re scratching your head.

So, what’s an exerciser to do? Start by determining what you hope to get out of a stretching session. Then learn the different types of stretching.

Consider this your definitive guide to stretching. Use it to find the best types of stretching for your specific needs.

Why should you stretch?

Why should you stretch?
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Before you can fully understand the types of stretching, you need to know about the actual benefits of stretching. You might stretch as a part of an exercise routine to help prevent injury, reduce post-workout soreness, and “loosen up”. You may want to improve your flexibility – finally do that split or touch your toes. You might have low back pain and stretch in an attempt to relieve it. Or you may want to get back to moving with greater ease.

Believe it or not, stretching isn’t a fix for all of these goals, although it can help in certain circumstances. When, where, and how stretching might benefit you depends on whether you’re talking about mobility, flexibility, or range of motion. Spoiler alert: they’re not the same thing.

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Mobility

Mobility
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Mobility, simply put, is your ability to move freely. Mobility differs from person to person and is affected by factors like your age, how healthy you are, and if you have an injury. Mobility can also refer to overall movement, like mobility while walking. It can refer to a specific movement pattern, like doing a squat. Or can refer to the mobility of a specific joint, like the right elbow or left knee.

To enjoy a high quality of life, maintaining mobility should be a major and ongoing goal. Exercise programs, including stretching, can play a role in maintaining proper mobility and enhancing or regaining mobility when it’s appropriate. Flexibility may play a role in mobility, but it’s not the same thing.

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Flexibility

Flexibility
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Flexibility refers to the range of motion at a specific joint. This differs from person to person, and while people often refer to flexibility in a way that implies more is better, that’s not always the case. A given joint can be overly flexible or have limited flexibility based on factors like age, gender, bone shape and position, medical conditions, injuries, muscle and fat amounts, and even hormones.

The average person doesn’t need to become overly flexible. While extreme flexibility may be fun for nailing the perfect Instagram-worthy yoga pose, being too flexible for your specific day-to-day movement needs may actually make you more prone to injury.

The Achilles’ heel of flexibility is instability. When a joint is overly flexible, it becomes less stable, and that makes it more likely to move in a way it’s not supposed to. Instead of striving for contortionist-level flexibility, aim to attain or maintain proper range of motion at a given joint for your specific body and needs.

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Range of motion

Range of motion
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Range of motion is essentially how the movement of a joint is measured. For instance, if you start a biceps curl with your arm fully extended, you should be able to flex your elbow, drawing the dumbbell past the 90-degree angle and closer to your shoulder. That’s a full range of motion.

Everyone has a different range: In the example above, how far you curl depends on factors like biceps size (bigger muscles make it harder to bring the dumbbell closer to your shoulder), elbow injury, and if you have other connective tissue or joint issues.

If your range of motion is limited, it means the joint isn’t moving to the expected level. In that case, your goal for stretching may be increasing the range of motion of the joint.

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The main types of stretching

The main types of stretching
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Done correctly, stretching can help improve your range of motion for a specific joint. If you increase your range of motion, you’ll have increased flexibility, and that ultimately leads to better mobility at that joint. Keep in mind that flexibility is joint-specific. Just because you’re very flexible at one joint does not mean you’re flexible at another.

There are a variety of ways you can stretch, which ultimately fall into four accepted categories of stretching):

Static stretching (done actively or passively)

Dynamic stretching (often referred to as a dynamic warm-up or cooldown)

Proprioceptive neuromuscular facilitation (PNF) stretching

Ballistic stretching

One note to the list above: ballistic stretching has fallen out of popularity for a variety of reasons and isn’t widely promoted as a means to improve flexibility. So while it is a form of stretching, it’s not one most people should be engaging in on a regular basis.

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Different stretching protocols

Different stretching protocols
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There are other types of stretching beyond the big four, and some stretching exercises combine types of stretches. For instance, yoga practices often combine static and dynamic stretching techniques to enhance range of motion, flexibility and overall mobility. Likewise, physical therapists and coaches regularly combine static, PNF, and active stretching when working with clients. Here’s what to know about the four main types of stretching:

Static stretching

Static stretching
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Generally, when you think of a classic stretching routine, you’re thinking of a static stretch. These stretches are done without moving your muscles through a full range of motion as part of the exercise. Rather, you’re moving to the end of your range of motion and holding the position. Static stretches can be done passively, where you relax your muscles as you perform the stretch, or actively, where you contract your muscle groups as you stretch.

Unless you’re stretching with a partner, you’ll typically do passive static stretches. For instance, when bending forward to touch your toes, you’ll lean forward from your waist and hang, relaxing into the stretch. You might hold the position without moving for 10 to 60 seconds, repeating the stretch several times.

But stretching doesn’t have to be a solo exercise. And static stretching is a great partner activity. An active form of partner stretching might be a lying hamstring stretch.

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How to do a lying hamstring stretch

How to do a lying hamstring stretch
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Lie on your back on the ground. With the help of your partner, lift one leg from the ground.

With your partner’s help, bring your leg closer to your torso. Keep your knee fully extended.

Stop when you feel a stretch along the back of your thigh.

Passive stretch: Relax your muscles as your partner stretches you.

Active stretch: Contract your muscles and press against your partner’s resistance, as if to lower your leg back to the floor. (Your leg should remain static, not moving, however.)

After 10 to 20 seconds, your partner will release the resistance. Pause for a break, then repeat the stretch.

Whenever you use muscle contraction during a stretch (either contracting the muscle you’re stretching or contracting its opposing muscle) without moving the muscles being stretched, you’re engaging in a form of active static stretching.

PNF stretching

PNF stretching
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PNF is a specific type of stretching that’s most frequently (and appropriately) used by trained professionals in athletic or therapy settings. In a nutshell, PNF stretching is a way to “trick” the body’s stretch reflex into allowing a deeper stretch. It uses a combination of passive static stretching and active static stretching facilitated by a partner in a very specific manner.

Think about it: when you move into a stretch, you know when you’ve hit the end of your natural range of motion because your body says, “Nope, can’t go any further!” You feel a tightness that can edge into pain if you push yourself past the spot you feel comfortable. This stretch reflex is protective and important to help prevent injury. But it can also be manipulated to increase range of motion. PNF stretching is a type of manipulation of this stretch reflex.

The thing to remember about PNF stretching is that it’s crucial to work with a trained professional. This type of stretching should be reserved for coaching or therapy sessions with someone who knows the ropes and won’t push you to the point of injury.

“We perform PNF stretching with our patients following an injury,” says chiropractor Allen Conrad. “PNF stretches require advanced training, but we have found that PNF stretching helps the recovery time of injured muscles and that patients can return to their pre-injury state faster with this type of stretching treatment.”

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