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Stroke · Trunk control

Bed Mobility Training After Stroke: Relearning Rolling, Bridging and Lying-to-Sitting From Scratch

After the patient comes home from hospital, the first difficulty carers face is often not how to walk again but something more basic in daily care: "How do I help the patient sit up from lying down?" "How do I turn the patient without causing pressure sores?" These movements belong to bed mobility, which covers rolling, bridging (lifting the pelvis) and sitting up from lying to the edge of the bed. These movements look simple and minor, but they are the earliest stage of motor relearning after a stroke, and their importance is often the most underestimated.

From the angle of movement recovery in physiotherapy, this article goes through the normal pattern of the three core bed movements, the compensations that commonly appear after a stroke, and the starting point of progressive training from severe (passive assistance) to mild (active, segmented). Bed mobility is the earliest application of trunk control during the bedbound stage. For the overall concept of trunk control, please read the overview of trunk control after stroke first.

Why bed movements matter: the base for later sit-to-stand and walking

Many people wrongly think rolling and bridging are only a warm-up chore before real balance practice. Clinical evidence shows that trunk performance is itself a key predictor of functional recovery after a stroke. A follow-up study found that trunk performance at admission (especially static sitting balance) predicted function at 6 months even better than the Barthel Index score at admission (Verheyden et al., 2007). This supports the importance of starting bed and trunk control training early.

SMD 1.03
Improvement in trunk function
At the same training dose, the effect of trunk training (including rolling, bridging and segmented sitting practice), 95% CI 0.91–1.16 (Thijs et al., 2023)
SMD 1.00
Improvement in standing balance
Data from the same review; 95% CI 0.86–1.15, but the certainty of the related evidence ranges from very low to moderate
OR 1.13
More out-of-bed sessions a day was linked to better recovery
Dose-response analysis of the AVERT study; 95% CI 1.09–1.18 (Bernhardt et al., 2016)

Practising bed movements correctly brings benefits well beyond moving in bed. Research shows that trunk training helps improve trunk control and standing balance (Thijs et al., 2023), and the even weight through both feet trained in bridging improves the ability to go from sitting to standing (Pankheaw et al., 2022). Rolling, bridging and sitting up are therefore not just everyday chores. They are an important base for later sit-to-stand, chair transfers and walking.

Three basic bed movements: the normal way and common wrong compensations after a stroke

Each bed movement has its "normal movement pattern", and there are also wrong compensations that stroke patients most often show. Once the difference is understood, carers can see clearly which movements to guide and which wrong ways of using force to avoid when helping day to day.

1. Rolling: lead with the body turning, never pull hard with the unaffected hand alone

Normal movement pattern
  • The (unaffected) arm reaches forward to lead, then the trunk rotates and the pelvis follows
  • Learn rolling towards the unaffected side first (easier, builds confidence), then towards the affected side
  • Head, shoulders and pelvis rotate in order, and the affected side takes part
Common compensation after stroke
  • Pulling on the bed rail or sheet with the unaffected hand alone and dragging the whole body over
  • The trunk does not rotate, the affected side is left behind and its weight bearing is neglected
  • Once the compensation sets, later sit-to-stand and transfers also take shortcuts

Rolling is not only the first step in moving on one's own. It is also a key part of daily care to prevent pressure sores and clear secretions from the lungs (through postural drainage with regular turning). The point when helping is to guide the patient to rotate the trunk so that the body is "led", and not to let the patient "carry" the body over by force using the unaffected arm and leg alone.

2. Bridging: feet on the bed, hips extended, lifting the pelvis evenly off the bed

Normal movement pattern
  • Lie on the back with both knees bent and both feet flat on the bed
  • Draw in the abdomen to steady the trunk, and extend the hips to lift the pelvis off symmetrically
  • Both buttocks work evenly and take weight symmetrically
Common compensation after stroke
  • The affected hip is weak, and the pelvis drops and tilts towards the affected side as it lifts
  • Weight is pushed onto the unaffected side, and the affected foot is unsteady or slides away
  • The body is "propped up" on the unaffected leg alone, with no effort from the affected side

Bridging is a preliminary movement for sit-to-stand, transfers and placing a bedpan. A randomised controlled trial (RCT) has shown that progressive bridging training can improve symmetrical weight bearing on both sides in the extension phase of sit-to-stand, and thereby the overall sit-to-stand ability (Pankheaw et al., 2022). The bridging training described on this page stops at symmetrical weight bearing with the pelvis off the bed. Once this base is built, the patient can move on to the next stage, full sit-to-stand training.

3. Lying to sitting: turn onto the side first, then push up with the hands to sit at the edge of the bed

Normal movement pattern (side-lying push-up)
  • Roll onto the side first, and let both legs hang naturally over the edge of the bed
  • The lower elbow and upper hand press on the bed, and the body turning sideways and the weight of the legs help push the upper body up
  • Takes less effort, protects the lower back, and the affected side takes part
Common wrong compensation (straight sit-up)
  • Pulling the upper body up directly by tightening the abdomen is hard work and easily compensated
  • Over-use of the neck and back, with a risk of strain and blood pressure swings
  • The affected side is left aside and the quality of movement is poor

In the early stage the carer can help in segments in a "cradle" style (first guiding the patient onto the side, then moving both legs over the edge of the bed, and finally helping to push the upper body up), and then gradually reduce support as the patient improves, so that the patient moves from active-assisted to completing the movement alone.

Starting points and progression for patients at different levels

Stroke patients of every level of severity need bed movement training, but the help needed at the start and the route of progression differ from person to person. The starting points at each stage are listed below by movement pattern (and not only by severity of illness). For grading of standing and walking ability in the lower limb, see the severity matrix separately.

Patients with a severe stroke or long bed rest: someone guides, then the patient gradually does part of the work

  • Rolling: the therapist or carer guides from the side, with positioning to prevent pressure sores and chest clearing care
  • Bridging: the carer supports the patient's pelvis with both hands to help lift it off the bed and guide even weight through both feet
  • Lying to sitting: sit the patient up with segmented support in the cradle hold, and reduce the help as the patient improves
  • Core principle: emphasise even weight on both sides and make sure the affected side takes part, to avoid pulling with the unaffected side alone and forming bad habits

Patients with a moderate or mild stroke: from segmented practice to doing it in one flowing movement

  • Rolling: the patient turns the body alone, first practising rolling towards the unaffected side and then progressing to the affected side
  • Bridging: the patient lifts the pelvis steadily off the bed using own strength and slowly lengthens the time it is held in the air
  • Lying to sitting: the patient turns onto the side and pushes up (push-up) to sit at the edge of the bed, gradually using less force from the hands on the bed
  • Core principle: from breaking the movement into steps to doing it in one go, from relying on support to needing none, and from leaning on the unaffected side to making the affected side work as well
From passive to activeFirst someone guides the movement so that the patient feels the right direction. Then the patient works with some help, and only at the end does the patient do it alone. Do not ask the patient to rely entirely on own strength from the start.
From the unaffected side to the affected sideFor rolling and for weight through the legs, start with the unaffected-side direction that is easier to do, so that the patient builds confidence. Then take on the directions that need more work from the affected side.
From supported to unsupportedIn the early stage a bed rail, the carer's hands or a pillow can be used for support. As ability improves, remove these external supports gradually so that the patient's own trunk takes charge of staying steady.
From segmented to continuousFirst break the rolling or sitting-up process into several small steps and practise each until familiar. Then link them into one smooth movement.
Dose: early, short, frequentAnalysis of the AVERT study shows that more out-of-bed sessions a day helps recovery, but in the very early stage of stroke a single long, high-intensity session is not good for recovery. Training should therefore follow a pattern of several short sessions each day, not one long session (Bernhardt et al., 2016).

It is advisable for a physiotherapist to carry out a detailed assessment and demonstrate in person first, and for carers and the patient to practise at home afterwards.The direction of rolling, where the hands go when helping with bridging, and how to hold the patient when helping the patient sit up all need to be tailored to the patient's trunk control and safety (for example blood pressure changes, protection of the affected shoulder and the condition of the skin). Working it out from online videos alone easily leads to the wrong starting point and even sets wrong compensation movements.

Summary of clinical research and division of work between professions

Taken together, the clinical evidence above shows the following. Trunk training helps improve trunk function and standing balance (Thijs et al., 2023). Adding early trunk exercises to usual rehabilitation brings extra benefit for trunk function, standing balance and overall mobility (Saeys et al., 2012). The patient's trunk performance at admission can itself predict later outcomes (Verheyden et al., 2007). Progressive bridging with symmetrical weight bearing improves sit-to-stand ability (Pankheaw et al., 2022). For dose, the "early, short, frequent" pattern is best (Bernhardt et al., 2016). The findings agree that bed movements are the foundation of rehabilitation, and with the right method the benefit goes well beyond the movement itself.

The right way to do bed mobility training, and common misconceptions
  • Learn rolling towards the unaffected side first, and lead with the turning of the body, never by pulling hard with the unaffected hand alone
  • In bridging the most important thing is to lift the buttocks off the bed with even effort from both feet, building a base of weight bearing and avoiding shifting weight onto the unaffected side
  • For lying to sitting, it is advisable to turn onto the side first and then push up (push-up). This protects the lower back and lets the affected side take part
  • Training dose should follow the principle of starting early, keeping each session short and doing it many times a day. Several sessions are better than one long session
  • Believing it is correct to spring straight up from lying flat like a sit-up
  • Believing that practising bridging is the same as practising full sit-to-stand

Finally, the division of work between professions. This page looks purely from the physiotherapy angle at "how to move", with the focus on relearning normal movement patterns, positioning to prevent pressure sores, and the biomechanics of safe transfers to prevent falls. Turning these basic movements into daily life tasks (for example breaking dressing, toileting and eating into task steps), and compensation strategies for unilateral spatial neglect or cognitive impairment, belong to occupational therapy. The two should work together; for details see occupational therapy after stroke. Once the patient is steady with bed movements, to see how to link on to later standing, gait training and fall prevention measures, refer to the stroke recovery timeline by stage of rehabilitation.

Frequently asked questions

When helping a patient roll after a stroke, should the patient learn to roll towards the unaffected side or the affected side first?
Training usually starts with "rolling towards the unaffected side". The unaffected arm leads, then the trunk rotates, and the pelvis follows. This direction is easier to master and helps the patient build confidence. Once rolling towards the unaffected side is familiar, the patient can progress to "rolling towards the affected side", with the affected side underneath. This needs more control and support, and it also helps improve weight-bearing sensation on the affected side. The key throughout is to guide trunk rotation to lead the body. The patient should never pull on the bed rail or sheet with the unaffected hand alone to drag the body over, because this makes compensation patterns deeply set and further neglects the affected side. Which side to start on, and how much help is needed, should be decided by the physiotherapist according to the patient's trunk control.
What does bridging (lifting the pelvis) do for stroke patients? Is it the same as sit-to-stand training?
Bridging means "feet on the bed, hips extended, and the pelvis lifted symmetrically off the bed". Its main purpose is to train the hip extensor muscles and symmetrical weight bearing on both sides, and it is a preliminary basis for sit-to-stand, transfers and placing a bedpan in daily life. A randomised controlled trial (RCT) showed that progressive bridging training helps improve symmetrical weight bearing on both sides during the extension phase of sit-to-stand, and then the overall sit-to-stand ability (Pankheaw et al., 2022). Bridging is not the same as full sit-to-stand training, however. Its role is to lay the groundwork of "symmetrical weight bearing". The bridging training described on this page also stops at the stage of symmetrical weight bearing off the bed. Full sit-to-stand training belongs to the next stage of rehabilitation.
After a stroke, can the patient sit up from lying straight up, like a sit-up?
This is not recommended. A straight sit-up (pulling the upper body up by contracting the abdominal muscles directly) is hard work for a stroke patient, easily triggers compensatory movements, and may strain the neck and back. The correct way is the "side-lying push-up" method. The patient first turns onto the side, moves both legs over the edge of the bed, and then uses the lower elbow and the upper palm to press on the bed, pushing the upper body up into sitting with the momentum of the body turning sideways and the legs dropping down. This way of sitting up takes less effort, protects the lower back, and lets the affected side take part. In the early stage the carer can help in segments in a "cradle" style, and then gradually reduce support as the patient progresses.
For a patient with a severe stroke or who has been bedbound for a long time, where should bed mobility start?
Training should start with "passive guidance, moving on to active assistance". When rolling, the therapist or carer guides from the side (this also helps prevent pressure sores and aids clearing secretions from the lungs). For bridging, both hands support the patient's pelvis to help lift it off the bed. For lying to sitting, the cradle style of segmented support is used. For dose, the evidence from the AVERT study suggests the principle of "early, short and frequent", meaning several short periods of out-of-bed or in-bed activity, not one long high-intensity session (Bernhardt et al., 2016). Throughout, the emphasis is on symmetrical weight bearing on both sides, and the affected side must not be left out, so that the patient does not pull with the unaffected side alone and set compensatory movements.
How does bed mobility training differ from learning to dress and use the toilet for self-care?
This page looks purely from the physiotherapy angle at "how to move". It covers relearning the normal movement patterns of rolling, bridging and lying-to-sitting, positioning to prevent pressure sores, and the mechanics of safe transfers to prevent falls. How to fit these basic movements into daily tasks (for example breaking dressing, toileting and eating into task steps), and compensation strategies for unilateral spatial neglect or cognitive impairment, belong to occupational therapy. The two complement each other. For details, see the page on occupational therapy after stroke.

Disclaimer: This article is general health information and is not professional medical advice. If you have any health concerns, please consult a qualified healthcare professional.

References

  1. Verheyden, G., Nieuwboer, A., De Wit, L., Feys, H., Schuback, B., Baert, I., Jenni, W., Schupp, W., Thijs, V., & De Weerdt, W. (2007). Trunk performance after stroke: an eye catching predictor of functional outcome. Journal of Neurology, Neurosurgery & Psychiatry, 78(7), 694–698. https://doi.org/10.1136/jnnp.2006.101642 (PMID: 17178824)
  2. Thijs, L., Voets, E., Denissen, S., Mehrholz, J., Elsner, B., Lemmens, R., & Verheyden, G. S. A. F. (2023). Trunk training following stroke. Cochrane Database of Systematic Reviews, 3(3), CD013712. https://doi.org/10.1002/14651858.CD013712.pub2 (PMID: 36864008)
  3. Saeys, W., Vereeck, L., Truijen, S., Lafosse, C., Wuyts, F. P., & Van de Heyning, P. (2012). Randomized controlled trial of truncal exercises early after stroke to improve balance and mobility. Neurorehabilitation and Neural Repair, 26(3), 231–238. https://doi.org/10.1177/1545968311416822 (PMID: 21844283)
  4. Pankheaw, T., Hiengkaew, V., Bovonsunthonchai, S., & Tretriluxana, J. (2022). Effect of progressive bridging exercise on weight-bearing during the extension phase of sit-to-stand, and on sit-to-stand ability in individuals with stroke: A randomised controlled trial. Clinical Rehabilitation, 36(11), 1463–1475. https://doi.org/10.1177/02692155221107107 (PMID: 35815985)
  5. Bernhardt, J., Churilov, L., Ellery, F., Collier, J., Chamberlain, J., Langhorne, P., et al. (AVERT Collaboration). (2016). Prespecified dose-response analysis for A Very Early Rehabilitation Trial (AVERT). Neurology, 86(23), 2138–2145. https://doi.org/10.1212/WNL.0000000000002459 (PMID: 26888985)