Opinions on the usefulness of stretching differ greatly. Some are absolutely in favour while others claim it has no benefits or might even be bad for you. We wanted to know how stretching is judged from a scientific point of view and which findings speak for or against stretching. Dr. Christiane Wilke is someone who is very familiar with the subject. A sports scientist at the German Sports University (DSHS) in Cologne, she is working intensively on movement-oriented prevention and rehabilitation sciences.
Stretching before or after a run: Yes or no?
Many athletes believe that targeted stretching is said to reduce the risk of injury and prevent muscle soreness. Sounds good but is this belief founded in science?
"No conclusive evidence"
Dr. Wilke explains: "There is no conclusive evidence of the usefulness of a stretching program for endurance athletes. Many athletes hope to reduce their risk of getting injured by incorporating a targeted stretching program. Opinions still differ here. The only thing we know for sure is that stretching does not prevent muscle soreness."
Stretching for recovery and relaxation after exercising
This, however, does not mean that stretching has no effect or is completely pointless:
"While there is no scientific evidence regarding injury prevention through stretching, it can still have a positive effect" says the scientist. "stretching for relaxation and recovery after exercising can absolutely be useful, which is why a generalising 'no' to stretching is also wrong. Stretching can, for example, increase the perception of individual muscle groups. This can promote targeted relaxation and the increased blood circulation can aid regeneration."
Advantages of stretching
In the age of homo digitalis, who is damaged from sitting in a chair all day, stretching exercises are even important to counteract the shortening of certain muscles:
"Muscles with a tendency towards shortening over time, such as the anterior chest muscles or the anterior pelvic muscles, should be stretched regularly in order to maintain mobility," recommends Dr. Wilke. "Stretching can help maintain muscle balance in the short term by lengthening shortened muscles and reducing their tension. And it helps stressed people to loosen up and relax."
This video will show you how you can stretch your chest:
This video will show you how you can stretch your anterior pelvic muscles, also known as the hip flexor:
Conclusion: Stretching after a run can definitely help you, it just won't prevent muscle soreness.
Benefits of stretching:
Stretching before a run
Does stretching before a run have any benefits or is it even detrimental to your health? Dr. Wilke sheds some light on this.
Stretching before a run? Don't forget to warm up first!
Generally, there is nothing wrong with a few stretches before a run, says the sports scientist: "Whether you prepare for a run and how you do it depends entirely on your personal preference. Therefore, there is no right or wrong when it comes to stretching. Some athletes swear by it, others prefer a light jog."
Make sure you don't forget to warm up though: "It is important to bring your muscles up to working temperature", says the scientist. "How you do this doesn't necessarily matter. Since running mostly puts stress on your lower extremities, you should pick stretches that focus on them. Examples of good stretches include stretching your posterior and anterior leg muscles."
The following stretches can be incorporated into your pre-run routine.
Stretch 1: Stretching the posterior leg muscles
"To stretch your posterior leg muscles, stand up right and curl the toes on your left foot up towards your body: You should feel a light stretch in the back of your leg. Repeat the exercise on the right foot."
Stretch 2: Stretching the anterior leg muscles
"For the front of the leg stand with your feet a hip width apart. Now bend one leg backwards and try to touch your heel to you buttocks. You can also use your hand to pull your leg towards your buttocks. Try to grab your ankle in order to stretch your muscles optimally. Afterwards you can shake out your legs."
Stretching after a run
Stretching after a run can certainly have a positive effect: "This will aid your regeneration and lengthen shortened structures again", Dr. Wilke explains.
Smooth fasciae through stretching
By stretching you ensure that your connective tissue fibers, the fasciae, remain supple: "Stretching has a positive effect on the fasciae as it helps loosen up agglutinations. This will increase your mobility."
The important thing is that you "do your stretches in a calm and focused manner to get the most out of their relaxing effect."
While you should be doing "more dynamic stretches with controlled breathing" when doing sports, stretching "after sports can also be static": "Hold the position for 2x20 seconds."
Stretching: Focus on your lower body
"After a run your focus should also be on your lower extremities", Dr. Christiane Wilke explains. "Now you can also incorporate your glutes and the lower back into your stretching routine."
These stretches can be used after a run:
"To stretch your glutes, bend your knees slightly and cross your right foot over your left knee. Lightly press against your right knee. You should feel a light stretch in your glutes. Repeat this on the other side."
Stretching your back
"To stretch your back, lock your fingers together, turn your palms outwards and reach up over your head as far as you can. Starting from your head, start rolling forward slowly, vertebra by vertebra. This exercise loosens up your back muscles and your spine."
This video shows you some stretches for after your run:
Proper stretching: It's all about your technique
To get the desired effects from stretching and prevent injuries, you should keep a few basic rules and techniques in mind.
Rules for proper stretching: S-H-R-S stretching technique
Keep the following rules in mind when stretching:
To get the most out of your stretching routine, remember the "S-H-R-S" rule:
When not to stretch
Even if stretching exercises can have a positive effect on the regeneration of athletes, it should also be taken with caution:
"Stretching has long been considered a remedy against muscle soreness. No study has been able to prove this. On the contrary, stretching can cause further micro tears in your muscles, which are ultimately responsible for muscle soreness", says Dr. Wilke.
In the following cases, Dr. Wilke recommends against stretching:
In the following video, physical therapist Greg Schultz talks about why stretching is important:
Proper stretching: An overview
As a runner you can stretch before or after a run. Stretching is not automatically useless or even bad for you. You should, however, keep a few things in mind. We are now going to summarise the most important points from this article.
The effects of stretching
Rules for proper stretching
Thank you to Dr. Christiane Wilke for this very insightful interview.
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