Range of Motion: What It Is and How to Improve It

Last verified November 2, 2026. Every claim on this page links to the source we checked. Where the evidence is thin, we say so.

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The short answer

Range of motion (ROM) is how far a joint can move. You can raise it in two well-supported ways. Regular stretching produced a moderate increase in a meta-analysis of 77 studies, with static and PNF stretching doing better than dynamic or ballistic stretching². Strength training with weights through a full range did about as well as stretching in a meta-analysis of 55 studies³. A single stretching or foam rolling session gives a short-lived gain, typically under 30 minutes^{4, 5}. Much of the gain from a few weeks of stretching seems to come from tolerating the stretch better rather than from longer muscles⁶. If a joint suddenly loses movement, swells or locks, see a clinician rather than stretching it out⁸.

What is range of motion?

Range of motion is the amount of movement available at a joint, usually measured in degrees. Every joint has its own: how far your knee bends, how high you can lift your arm, how far your ankle flexes when you squat. Clinicians measure it to track recovery from an injury or surgery, and coaches look at it because some positions in sport need a lot of it.

It is related to, but not the same as, two words you will see a lot:

• Flexibility usually means how far a muscle and tendon will let a joint move, for example how far you can reach towards your toes with straight legs.
• Mobility usually means how well you can move through that range under your own control, including strength and coordination at the end of it.

Someone can be flexible but not very mobile, for example able to do the splits when pushed into them but unable to lift a leg high on their own. That gap is the difference between passive and active range of motion.

Active, passive and active-assisted range of motion

Type	Who moves the joint	Where you see it
Active (AROM)	You, using your own muscles1	Everyday movement, training, end-of-rehab testing
Active-assisted (AAROM)	You, with partial help from another person, a band or a machine1	Early rehab, when a joint can move but not fully on its own
Passive (PROM)	Another person or a machine, with your muscles relaxed1	Early rehab after surgery, clinical testing of how far a joint can go

Passive range is usually larger than active range, because nothing has to hold the joint at the end. If your passive range is good but your active range is much smaller, strength and control at end range are usually the thing to train. If both are limited, the joint or the tissues around it may be stiff, swollen or painful, and that is worth getting assessed after an injury.

What limits range of motion?

• Joint structure. Bone shape and ligaments set hard limits that training doesn't change.
• Muscle and tendon stiffness. Stretching temporarily reduces it, which is one reason a single session increases range⁴.
• Stretch tolerance. How much stretch sensation you will accept before you stop. Most studies of 3 to 8 week stretching programmes put the gains down to changed sensation rather than physically longer muscles⁶.
• Pain, swelling and injury. After a sprain, fracture or operation, range is often reduced until healing allows more. Follow the plan from your clinician here; it is different from general flexibility training.
• Disuse. Joints you rarely take to the end of their range tend to feel stiff there.

Evidence map: graded by method

Grades: A consistent randomized trials or meta-analyses. B supported by randomized trials that are small or varied. C observational studies only, few or mixed trials, or trials showing no effect. D no direct studies we could find.

Claim	Grade	Best evidence	What it means for you
Stretching over weeks increases ROM	A	77 studies, 3,870 people: moderate increase vs control (effect size about 1.0); high heterogeneity and some reporting bias2.	Regular stretching works.
Static and PNF stretching beat dynamic or ballistic stretching for long-term ROM	B	Same meta-analysis: PNF and static similar to each other and better than ballistic or dynamic2.	For range alone, hold stretches.
More stretching time, intensity or frequency gives more ROM	Cagainst	No relationship found for volume, intensity or weekly frequency2.	Consistency matters more than long or painful sessions.
Strength training with external load increases ROM	A	55 studies, 2,756 people: moderate increase vs control (effect size 0.73), no different from stretching in 7 head-to-head studies; possible publication bias3.	Lifting through a full range is a valid alternative to stretching.
Bodyweight-only strength training increases ROM	C	Not significant in the same meta-analysis3.	Add load, or add stretching.
A single stretching session increases ROM	A	Systematic review: all stretch types increased ROM, typically for under 30 minutes4.	Useful in a warm-up, not a lasting change.
A single foam rolling session increases ROM	A	26 trials: large short-term gain, no different from stretching5.	An alternative warm-up tool; see our foam rolling guide.
Stretching prevents sports injuries	Cagainst	25 randomized trials, 26,610 people: no protective effect for stretching (RR 0.96)7. Static and PNF stretching had no clear effect on injury in a second review4.	Stretch for range, not as injury insurance.
Strength training reduces sports injuries	B	Same meta-analysis: injuries cut to less than a third (RR 0.32), from few, varied trials7.	Another reason to build strength through range.

How to improve your range of motion

Pick the one to three joints that limit you, for example ankles in a squat, hips when you sit cross-legged, or shoulders overhead. Then combine the methods below. The plan is built from the evidence above; it wasn't tested as a whole.

1. Stretch most days

Static and PNF stretching gave the biggest long-term gains, and more total time didn't predict more gain². That means a few holds per muscle, done consistently, are a reasonable target. Stretch to a strong but tolerable sensation, breathe slowly, and stop if you feel sharp or tingling pain.

• Static stretching: move into the stretch and hold it.
• PNF stretching: move into a stretch, gently contract the stretched muscle against resistance for a few seconds, relax, then ease a little further. A partner, strap or wall can provide the resistance.
• Browse stretches by area: hamstrings, hips, hip flexors, calves, ankles, shoulders, thoracic spine and wrists, or start at the stretches hub. Our flexibility stretches page groups full-body options.

2. Get strong through the full range

Loaded strength training improved range about as much as stretching, and untrained people gained more than trained ones³. The authors suggest full or nearly full range matters more than the load itself³. In practice:

• Use exercises that take a joint to a long position under load: deep goblet squats, split squats, Romanian deadlifts, Cossack squats, and presses or pulldowns through a full arm path.
• Start light, control the bottom of each rep, and add load gradually.
• MoveWell movement pages that train range under control include Cossack squats, squat therapy, bear squat and pass-throughs.

3. Use mobility drills to warm up

Before training or sport, dynamic stretching gave a small boost to performance. Static holds of 60 seconds or more per muscle gave a small to moderate drop, which mostly disappeared when people did dynamic activity afterwards⁴. So:

• Warm up with leg swings, front to back and side to side, arm circles and lunging patterns such as the runner's lunge.
• If you want static stretches before training, keep holds short and follow them with dynamic movement.
• Save longer holds for after training or a separate session. Browse the ballistic and dynamic stretches for warm-up ideas.

4. Foam roll if you like it

A single foam rolling session gives a short-term gain similar to stretching⁵. It is a reasonable warm-up tool, especially if stretching a particular area is uncomfortable. See the foam rolling guide and our foam roller picks.

5. Be patient and measure

Pick one simple test per joint, such as a knee-to-wall ankle test, a toe touch, or how high you can raise your arms against a wall, and repeat it every couple of weeks under the same conditions. Most stretching programmes in the research ran for several weeks.

Sample 15-minute routine

Block	What to do	Time
Warm-up	Cat-cow, arm circles, leg swings	3 min
Hips	Couch stretch and pigeon pose, each side	4 min
Hamstrings and calves	Banded hamstring stretch and downward dog	3 min
Upper back and shoulders	Thread the needle and pec stretch	3 min
Strength through range	Cossack squats, slow and controlled	2 min

Swap in the areas that limit you. The full movement library has step-by-step instructions for each. If you prefer a guided routine, the MoveWell app builds them by body area.

When to see a clinician

The NHS advises seeing a GP if a joint is stiff for more than 30 minutes after waking, if pain or swelling keeps getting worse or keeps coming back, or if it hasn't improved after 2 weeks of home treatment. Get urgent help if a joint is hot and swollen or you feel unwell with a fever, and go to A&E after a fall or injury if you can't put weight on a joint, it looks out of place, or the area is numb or tingling⁸. After surgery or a fracture, follow your own clinician's range of motion plan.

Myths

• "Stretching prevents injuries." Not in the trials: stretching had no protective effect, while strength training did⁷.
• "You must hold stretches for minutes." Total stretching time didn't predict long-term gains².
• "Stretching makes muscles longer." In short programmes, most of the change looks like better stretch tolerance⁶. The result, more usable range, is still real.
• "Lifting weights makes you stiff." Loaded strength training increased range of motion about as much as stretching³.
• "Never stretch before exercise." Short holds followed by dynamic activity had little effect on performance⁴.

Common questions

What is a normal range of motion?

It varies by joint, age, sex and activity. Clinicians compare against reference values and against your other side. For training, what matters is whether you have the range your activities need without pain.

How long does it take to improve range of motion?

One session gives a gain that fades within about half an hour⁴. Longer-term gains build over weeks of regular stretching or strength training^{2, 3}.

Is stretching or strength training better for flexibility?

They performed about the same head to head³. Doing both is fine; adding stretching to strength training didn't add much range in the few studies that tested it³.

Does age reduce range of motion?

Many people lose range with age and inactivity. In the strength training meta-analysis, age didn't change how much people gained³, so it is still trainable.

Do I need to warm up before stretching?

It isn't required, but stretches often feel easier when you are warm. Stretching after a workout or a short walk is a simple habit.

Is foam rolling the same as stretching?

For short-term range, a session of foam rolling did about as well as stretching⁵. Our foam rolling guide covers how to do it.

Related

Read how to improve posture, the foam rolling guide, body mechanics and which recovery tools have evidence. Browse the movement library and the stretches hub.

References

Sources were checked on November 2, 2026. Where only the abstract was available, we say so.

1. Ernstmeyer K, Christman E, eds. Nursing Fundamentals, chapter 13: Mobility, glossary. Open RN, Chippewa Valley Technical College. CC BY 4.0. Source
2. Konrad A, Alizadeh S, Daneshjoo A, et al. Chronic 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. 2024;13(2):186-194. doi:10.1016/j.jshs.2023.06.002. Source
3. Alizadeh S, Daneshjoo A, Zahiri A, et al. Resistance training induces improvements in range of motion: a systematic review and meta-analysis. Sports Medicine. 2023;53:707-722. doi:10.1007/s40279-022-01804-x. Source
4. Behm DG, Blazevich AJ, Kay AD, McHugh M. Acute effects of muscle stretching on physical performance, range of motion, and injury incidence in healthy active individuals: a systematic review. Applied Physiology, Nutrition, and Metabolism. 2016;41(1):1-11. doi:10.1139/apnm-2015-0235. Abstract. Source
5. Wilke J, Müller A-L, Giesche F, Power G, Ahmedi H, Behm DG. Acute effects of foam rolling on range of motion in healthy adults: a systematic review with multilevel meta-analysis. Sports Medicine. 2020;50(2):387-402. doi:10.1007/s40279-019-01205-7. Abstract. Source
6. Weppler CH, Magnusson SP. Increasing muscle extensibility: a matter of increasing length or modifying sensation? Physical Therapy. 2010;90(3):438-449. doi:10.2522/ptj.20090012. Abstract. Source
7. Lauersen JB, Bertelsen DM, Andersen LB. The effectiveness of exercise interventions to prevent sports injuries: a systematic review and meta-analysis of randomised controlled trials. British Journal of Sports Medicine. 2014;48(11):871. Abstract. Source
8. NHS. Joint pain. Page last reviewed 26 February 2026. Source