Tight hips? Stretch them out! Shoulder pain? Stretch out those pecs. Bad ankle mobility? Give your calves a good stretch. You’ve heard this advice before. You’ve been told by a personal trainer, physical therapist, or internet “expert” that stretching is the ultimate solution to all of your musculoskeletal woes. Over the years, static stretching has been dubbed somewhat of a panacea for a myriad of aches and pains. While it can be beneficial in certain scenarios, there are also many instances in which it could actually be harmful – especially if you’re stretching a muscle group into oblivion and getting no relief. Whether it’s a warm-up, a cooldown, or mobility work, some people look for ways to throw stretches into every workout. Many will even use assistance: bands, weights, partners, you name it, anything to get a deeper stretch. Sure, they may feel relaxed in that position, but it may not be eliciting the effects they actually need. Does Static Stretching Increase Range of Motion? This is why a lot of lifters stretch. If you want to get a better squat, or move like a gymnast, surely you need to stretch, right? The short answer is yes, it helps, but only if you do it consistently. Static stretching is really effective at improving range of motion (ROM) acutely. If you stretch your hamstrings for 30-plus seconds, you’ll stimulate the central nervous system, which will allow you to ultimately achieve a greater range of motion. Doing this consistently will help your body feel safer in an end range, allowing the muscles to extend a little bit more. The downside? If you aren’t stretching regularly, those effects will be limited. And to expect someone to stretch 3-5 times per week in perpetuity seems unreasonable. So yes, stretching CAN help improve your ROM in the short term, but studies show it doesn’t last. Researchers tested a 6-week stretching protocol to see if it would create lasting adaptations in ROM after a 4-week cessation. In the first 6-weeks during the stretching protocol, the mean knee ROM increased by an average of about 10 degrees. Unfortunately, as soon as the participants stopped stretching, their ROM returned to their baseline scores (Willy et. al. 2001). As such, stretching is only effective insofar as someone does it all of the time. It’s effective for creating temporary changes in the central nervous system to yield greater muscle extensibility, but it isn’t the way to go if you’re looking for a more sustainable improvement. A Better Approach Slow eccentrics (negatives) are preferable to develop long-term changes in range of motion. Interestingly, a study showed that eccentric training of the hamstrings actually increased the fascicle length of the biceps femoris (Potier et. al. 2009)! Effectively, eccentric exercise altered the architecture of the muscle. This would likely create a longer-lasting change than simply stimulating the nervous system, which is what we see with static stretching. Controlled eccentric exercises done once or twice per week can yield some pretty incredible changes in the end range. Eccentrics also give the added benefit of building strength in a movement, which makes it preferable to static stretching. For example, I might have someone with tight hamstrings do tempo Romanian deadlifts with a pause. Take a look: This will create a tremendous stretch in the hamstrings under load. Simply control a movement on the eccentric or lowering phase for 3-6 seconds with a 1-3 second pause in the bottom. A few sets of this is enough to leave you sore for days. Additionally, you’ll find that they’re stronger at end range. Is Stretching Beneficial for Tightness and Pain? It seems logical to stretch an area that feels tight. Stretching the muscle will help it relax, right? Well, not necessarily. Tight muscles can occur in two different scenarios: a muscle can be tight and weak or tight and strong. While these instances seem to contradict one another, I’ll explain how that happens. Our bodies have many different strategies of compensation. In the first case, for example, you might feel tension in your hamstrings because you actually have extremely weak hamstrings (and typically a weak core as well). The hamstrings become tight as a means of protecting the hips. In this case, eccentric training of the hamstrings is again the perfect remedy. Barbell good mornings would be a great option for building your hamstrings. By strengthening the muscle in question, you can effectively get the central nervous system to relax and feel safe enough to contract that muscle. Static stretching would certainly not be beneficial in training a weak muscle. While it may provide acute relief, in a few hours the tension will likely return to its original state. Conversely, a muscle that’s tight and strong may be compensating for another weak area. Let’s consider the latissimus dorsi. Men often have extremely tight lats. It can get so bad that they’re unable to lift their arms all the
Origin: Stretching Gone Wrong