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Reasons Not to Stretch

well.blogs.nytimes.com

41–50 of 93 posts

Re: Reasons Not to Stretch

#41
post #27
post #7

Did our ancestors stretch before hunting? I doubt it.

Hard to know: https://www.google.com.au/search?q=lion+stretching&hl=en...

This is much more analogous to "stretching" by reaching to the sky, or by arching one's back, than to the static muscle stretches discussed in the article. This natural kind of stretching feels good (no need to educate people), which is evidence it's been selected for, and seems to concentrate more on joints than muscles.

Re: Reasons Not to Stretch

#42
post #2

It is nothing new, it was suspected for a while by many studies. Personally I do not practice stretching. It initially started as an experiment - as in "if I don't stretch I should get hurt ?", "ok I want to test this and see precisely how much!", ie to try to evaluate the marginal value of stretching. So far I have yet to see a negative consequence of not stretching (ie increased risk of injury, even if anecdotal ex…

I want to express how incredibly odd it is (and yet fitting for HN) that you're analogizing a fairly simple physical concept in terms of computing.

It's not called "warming up" because of the minor uptick in body heat.

Not a criticism; just remarking on the oddity because it amused me.

Re: Reasons Not to Stretch

#43
'"Now, you listen to some of these so-called sports-medicine experts today--shit! It's just shtick. It's just something else to sell. Warming up," he scoffed, adjusting a red ascot fitted neatly into his jumpsuit, "warming up is the biggest bunch of horseshit I've ever heard in my life. Fifteen minutes to warm up! Does a lion warm up when he's hungry? 'Uh-oh, here comes an antelope. Better warm up.' No! He just goes out and eats the sucker. You gotta get the blood circulating, but shit, does the lion cool down? No, he eats the sucker and goes to sleep. And that," he concluded, folding his arms into a variation of the pose, "is the truth."'

- Jack LaLanne on stretching, from Outside Magazine

Re: Reasons Not to Stretch

#44

Title is misleading. The article's main focus is on pre-workout stretching. I run several times a week, sometimes up to 20km at once and post-run stretching is most definitely a must-have.

Additionally, this article only considers /static stretching/, which is far less helpful to me as a runner than /active stretching/: leg swings, kicks, or arm circles.

Re: Reasons Not to Stretch

#45
post #40

I wonder how much of this effect (muscles weaker after stretching) is because stretching tires the muscles, as it will certainly require energy to execute a static for a minute or so. If the effect is similar to other forms of muscle use, it would be unsurprising. If it weakens muscles in a unique way, that seems more interesting. I stretch quite a bit because my muscles get tighter over the time, in particular from…

It wouldn't be due to simple muscular tiredness. Studies on weight training show that local muscular fatigue can largely dissipate within minutes.

I'd place my money on a CNS phenomenon.

Re: Reasons Not to Stretch

#46
post #30

The title is misleading, to say the least. I occasionally suffer from lower back pain. From experience, tight hamstrings seem to be the cause. If I regularly stretch my hamstrings, I am without back problems. If I stop stretching, then, after a few months, I'll suddenly develop severe back pain. It's happened 3 times already, so I'm seeing a pattern. So I guess my point is: stretching can help in other areas; it just…

The basic point made is that pre-exercise stretching decreases power and may decrease stability. Sports scientists have been finding this in a number of studies for some time.

Post-exercise stretching, or regular therapeutic stretching, is not what they're talking about.

Re: Reasons Not to Stretch

#47
This is old news. E.g. "Stretching Scientifically" by Tom Kurz published IIRC some time in the 1980's discusses this in detail. Static stretching ahead of an activity is counter-productive and increases risk of injury. What you need to do before an activity is warm-up != stretching and that warm up should be customized to your activity. Stretching after the activity is a better idea though you also need to pick the right stretches, combine with strength training, and it all depends on your flexibility and sport.

Another thought, as someone who sits all day (really need a standing desk!) and practices Karate and a little Yoga I definitely recommend that people who sit all day do some sort of stretching and other activities to counteract the effects of prolonged sitting...

Re: Reasons Not to Stretch

#48

Title is misleading. The article's main focus is on pre-workout stretching. I run several times a week, sometimes up to 20km at once and post-run stretching is most definitely a must-have.

I agree. Skipping a post-run stretch is a big mistake. (Just take the stretching easy after longer runs, like a marathon. Then your muscles are weak and intensive stretching can damage them.)

I avoid most pre-run stretches, but find that both static and dynamic stretches of my ankles pre-run are helpful. There are specific studies that also support this.

Re: Reasons Not to Stretch

#49
post #37

I used to think stretching was stupid. Then I got old. Now I find that stretching reduces soreness the next day after a run. Certainly others have had the same experience?

The title of the article is too generic - he is talking of static stretching before a workout which is largely useless for weight lifting or power lifting styled workouts. In those regards the author makes a fair point. Static stretching before lifting weights affects stability. Plus it does nothing to warm up the major muscles that are used when lifting the weight.

Re: Reasons Not to Stretch

#50
Being a fairly competitive runner in my spare time (38:40 10k, 1:26 half marathon), I'd like to weigh in:

There are two different kinds of flexibility involved in running or exercise in general. 1) Static flexibility: Responsible for your ability to bend over and reach down to your toes. 2) Dynamic flexibility: Remember those drills where you try to kick your heel as high as possible? From standing, bringing up your heel as far as possible is difficult, but even while you're jogging slowly, it's much easier.

While it is important to maintain a good balance between static and dynamic flexibility, the latter is more important during exercise. Consider doing a dynamic warmup before your exercise [1], rather than doing static stretches. The reasoning behind this is that static stretching reduces the tension within your muscle fibers and leads to decreased strength and stability during exercise. After exercise, thorough static stretching is fine. While the effect on lessening muscle soreness is somewhat doubted, stretching muscle fibers after exercise prevents your muscle fibers from shortening and aids in restoring flexibility and tension for your next exercising session.

TL;DR: Rule of the thumb: Pre exercise -> dynamic warm-up; post exercise -> static stretching

[1] http://www.youtube.com/watch?v=djDqDDQl-Y4

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