Stretching for Rehab and Performance: What the 2026 Evidence Actually Says

Primary Keyword: stretching physiotherapy Calgary  ·  Secondary: stretching for rehab, dynamic warm-up, static stretching evidence, MacLeod Trail physiotherapy stretching program.

Author: Colin Bouma, PT, FCAMPT  ·  Updated for 2026

Stretching is one of the most universally recommended and most poorly understood components of physical activity. Coaches tell you to stretch before sport. Yoga teachers tell you to stretch for flexibility. Wellness articles tell you to stretch for stress relief. Your grandmother told you to stretch before going to bed. Most of these claims contain a partial truth — and most of them are wrong about the mechanism, and several are wrong about the outcome.

Four Honest Answers to the Big Questions

1. Does stretching prevent injury?

Mostly no. The landmark 2014 British Journal of Sports Medicine meta-analysis by Lauersen and colleagues pooled 25 trials and over 26,000 participants on exercise interventions for sports injury prevention. The result: strength training reduced injuries to less than one third and overuse injuries to almost half. Stretching showed no protective effect. (Lauersen, Bertelsen, & Andersen, 2014).

That does not mean stretching is harmful. It means that if your goal is to reduce injury risk, stretching is not the lever to pull. Progressive strength training is.

2. Does pre-activity stretching make you faster, stronger, or more powerful?

It depends on the dose. Modern meta-analyses show that static stretching held for more than 60 seconds per muscle group produces small but real acute reductions in strength and power. Held for less than 60 seconds, the effect is trivial — and when stretching is followed by a proper dynamic warm-up, no negative effect remains and sometimes there is a small positive one (Behm et al., 2024).

Translation: long static stretches alone, immediately before a power sport, are slightly counterproductive. Short stretches followed by a dynamic warm-up are fine. The hierarchy worth remembering: light cardio first, dynamic mobility second, sport-specific movements third, brief static stretches only if needed for a specific tight area.

3. Does stretching reduce muscle soreness after exercise?

No. The Cochrane systematic review on this question is one of the cleaner answers in the literature: stretching before, after, or before and after exercise does not produce clinically meaningful reductions in delayed-onset muscle soreness (Herbert, de Noronha, & Kamper, 2011). Sleep, hydration, light movement, and reasonable training progression do far more for soreness than any stretching ritual.

4. Does stretching actually lengthen tissues?

Yes, but probably not for the reason you think. A growing body of research — including a 2024 Konrad et al. systematic review with meta-regression — suggests most range-of-motion gains from stretching come from increased stretch tolerance (your nervous system letting you go further into a range) more than from genuine tissue lengthening (Konrad et al., 2024). Either way, stretching consistently 3–5 times per week for two to four weeks reliably increases joint range. The improvement is real; the mechanism is just more "neurological permission" than "rubber-band tissue."

So Where Does Stretching Actually Earn Its Place?

•      Improving range of motion when you genuinely lack it. Specific limitations — hamstring tightness blocking a deadlift, hip flexor tightness blocking a sprint stride, calf tightness limiting a squat — respond to consistent stretching across a few weeks.

•      Comfort and downregulation. Slow stretching with controlled breathing reduces sympathetic arousal — it can be a genuinely useful stress and tension management tool, even if its "muscle lengthening" effects are modest.

•      Specific rehab contexts. Post-surgical capsular tightness, neural mobilization for radicular pain, frozen shoulder, and certain tendinopathy protocols include targeted stretching for clear mechanical or neurophysiological reasons.

•      Movement variety and dynamic warm-up. Active mobility drills — leg swings, arm circles, lunges with rotation, world's greatest stretch — prepare the nervous system and tissues for activity. This is the kind of "stretching" that earns a place in a warm-up.

Static vs. Dynamic vs. PNF: What the Differences Actually Mean

Static stretching: hold a position at a comfortable end-range for 20-60 seconds. Best used outside of pre-power-activity contexts. Builds range over weeks.

Dynamic stretching: controlled, repetitive movement through full ranges. The right tool for warm-ups. Increases temperature, primes the nervous system, and prepares joints for sport.

PNF (Proprioceptive Neuromuscular Facilitation): a contract-relax technique that uses brief isometric contractions before stretching. Comparable to static stretching for range gains. Useful in clinical settings.

Ballistic stretching: bouncing into the end range. Generally not recommended for the general public — risk-to-reward ratio is poor outside of specific athletic preparation.

Stretching in a Rehab Context

Within physiotherapy, stretching is a tool — not a treatment in itself. Used well, it can:

•      Restore lost range after immobilization, surgery, or prolonged guarding.

•      Reduce mechanosensitivity of irritated structures (gentle, low-load stretching is often more useful than aggressive end-range work).

•      Improve tolerance to neural tension in radicular conditions (neural slider and tensioner techniques).

•      Form part of a comprehensive plan for conditions like adhesive capsulitis or post-fracture stiffness.

Used poorly, stretching becomes a stand-alone "treatment" that does nothing to address underlying load tolerance, strength, or movement quality. If a clinician hands you a sheet of stretches and calls it a treatment plan, you have not received much treatment.

A Sensible Default Framework

1.     Before sport or training: general dynamic warm-up (5-10 minutes light cardio + 5-10 minutes dynamic mobility and sport-specific drills). Brief static stretches (<30 seconds) only for specific tight areas, followed by movement.

2.     For flexibility goals: targeted static or PNF stretching 3-5 days per week, 2-4 sets of 30-60 seconds per muscle group, over at least 2-4 weeks. Expect real but gradual range gains.

3.     After training: gentle stretching is fine if it feels good. Do not expect it to reduce soreness; that is what sleep, hydration, and reasonable training load handle.

4.     Stress and recovery: slow, gentle stretching combined with breathing is a legitimate downregulation tool, even if the "lengthening" effect is small.

5.     For pain: targeted, individualized — talk to a physiotherapist. Generic stretching off social media is often the wrong move for a specific clinical problem.

Common Stretching Myths Worth Dropping

•      "You need to stretch every morning or you will stiffen up." Movement matters; ritualistic stretching is not required.

•      "Stretching prevents pulled muscles." The high-quality evidence does not support this. Strength training does.

•      "Foam rolling lengthens fascia." It does not. It modulates pain perception briefly, which can be useful, but it is not "releasing" tissue.

•      "If a muscle is tight, stretch it." Sometimes — but tightness is often protective. Strength, motor control, and load management may be more useful than stretching.

•      "More flexibility is always better." Not for everyone. Athletes in throwing or pivoting sports often have specific stiffness profiles that help performance. Hypermobility can be a liability.

How We Use Stretching at Our Calgary Clinic

1.     Assess first. Is your range actually limited, or does it feel limited because something is irritated? Different problems, different plans.

2.     Target genuinely restricted ranges. When stretching is the right tool, we prescribe it specifically and dose it appropriately.

3.     Pair with strength and motor control. Range without strength in that range is a recipe for re-injury. We add load.

4.     Use stretching as a tool, not a treatment. You will not leave with a "stretching program" as your whole plan. You may leave with one or two targeted stretches as part of a broader rehab program.

Why Choose Our Clinic on MacLeod Trail?

We are at 8989 MacLeod Trail SW, serving Haysboro, Kingsland, Fairview, Acadia, and the surrounding South Calgary neighbourhoods. We work with runners, lifters, climbers, yoga practitioners, weekend athletes, and adults trying to undo a desk job's damage — and the role of stretching is always built around the specific person and goal in front of us. As an FCAMPT-certified clinician, I bring advanced manual therapy and clinical-reasoning training to every assessment.

Book a Movement and Flexibility Assessment

If you have been religiously stretching for years and still feel tight, sore, or limited, the stretching may not be the problem — or the solution. Get assessed and find out what is actually going on. Most patients see meaningful change inside the first three to four sessions when the plan is matched to the real driver.

This article is for general educational purposes only. It is not medical advice, does not replace individualized assessment by a qualified healthcare professional, and does not create a physiotherapist–patient relationship. Always consult a regulated healthcare provider before starting a new exercise program or making changes to your care.

Bibliography

Behm, D. G., Alizadeh, S., Anvar, S. H., Hanlon, C., Ramsay, E., Mahmoud, M. M. I., Whitten, J., Fisher, J. P., Prieske, O., Chaabene, H., Granacher, U., & Steele, J. (2024). Revisiting the stretch-induced force deficit: A systematic review with multilevel meta-analysis of acute effects. Journal of Sport and Health Science. https://doi.org/10.1016/j.jshs.2024.05.002

Herbert, R. D., de Noronha, M., & Kamper, S. J. (2011). Stretching to prevent or reduce muscle soreness after exercise. Cochrane Database of Systematic Reviews, 7, CD004577. https://doi.org/10.1002/14651858.CD004577.pub3

Konrad, A., Nakamura, M., & Behm, D. G. (2024). The effects of stretching on range of motion with consideration of potential moderating variables: A systematic review with meta-analysis. Journal of Sport and Health Science. https://doi.org/10.1016/j.jshs.2023.06.002

Lauersen, J. B., Bertelsen, D. M., & Andersen, L. B. (2014). The effectiveness of exercise interventions to prevent sports injuries: A systematic review and meta-analysis of randomised controlled trials. British Journal of Sports Medicine, 48(11), 871–877. https://doi.org/10.1136/bjsports-2013-092538