Scientists are increasingly skeptical of the benefits of flexibility, but the fitness world doesn’t want to hear it
www.outsideonline.com
Sooo, a simple Google search easily finds articles from Harvard Medical and the Mayo Clinic touting the benefits of stretching, but I'm supposed to take word of Outside magazine instead?
Was pondering this stretching thing - why does my own experience run counter to the no-benefit-maybe-even-counterproductive pov?
Maybe it's when we stretch and how regularly.
And like many scientific/technical fields quickly get lost in a maze of detail. Like what was being done and what was being measured. And just as quickly run into paywall block. So it seems the best that can be had is articles and occasional summaries of papers. Unless wanting to undertake a medical or sports science degree...
There's a few articles that point to a 2004 paper by
Shrier who did a review of the literature and found:
An acute bout of stretching does not improve force or jump height, and the results for running speed are contradictory. Regular stretching improves force, jump height, and speed, although there is no evidence that it improves running economy.
Or as some-one pointed out a typical study:
had it’s participants do a metric shit-ton of stretching (like 10-15 minutes worth, give or take? maybe more?), which of course isn’t ideal for performance. There’s a stark different between that and having an athlete engage in a few quick stretches.
Basically, it’s likely best not to take a yoga class right before a timed 60.
Then again 2004 is nearly last century...
So something from
2012 and updated 2021 referencing Shrier again...
“Stretching immediately before exercise is deemed ineffective in preventing injuries and also reduces force and power by about 2% to 5%. Regular stretching over weeks yields opposite effects, increasing force and power by about 2% to 5% while improving running speed by about 0.06 second during a 50-yard dash.“
Or as author says:
In other words: Doing a specific type of stretching, in a specific way, immediately before another specific activity, can have a negative effect on athletic performance.
NOT that “all stretching has no value.”
And this...
“This study suggests that chronic static stretching exercises by themselves can improve specific exercise performances. It is possible that persons who are unable to participate in traditional strength training activities may be able to experience gains through stretching, which would allow them to transition into a more traditional exercise regimen.”
This is getting far too TL;DR. Hopefully some-one with proper credentials can help sort it out.
Meantime I'm in the group "feels better, works better" when I do regular stretching at the end of the ski day after thoroughly warming up in the hot tub / shower. It's anecdotal, not rigorous. Make only feeble attempts to stretch prior to skiing.
Also probably more in the "has issues with RoM" and need to keep working on it in order to do traditional exercises / strength training in the off-season.
There's another interesting point from a poke around in this space.
Results: High quality and consistent data demonstrated there is no apparent relationship between recovery of muscle function and ratings of muscle soreness and surrogate markers of muscle damage when protein supplements are consumed prior to, during or after a bout of endurance or resistance exercise. There also appears to be insufficient experimental data demonstrating ingestion of a protein supplement following a bout of exercise attenuates muscle soreness and/or lowers markers of muscle damage.
Looking forward to hearing from the protein shake makers.