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Written by Tristan Hulbert, Vivid.Care. Author of “The Healthcare Professional’s Complete Guide to Specialist Seating Assessments”. Last updated: 3 August 2026.
Deconditioning isn’t a consequence of getting older. It’s a consequence of not moving, and it’s preventable and largely reversible. That’s the British Geriatrics Society position, and it’s the right place to start. Older people living with frailty decondition fastest because they begin with less physiological reserve, not because decline is inevitable at their age. Around one in three patients over 70 leaves hospital with a new disability in an activity of daily living (Covinsky, JAMA 2011), and a lot of that is avoidable.
That distinction matters practically as well as ethically. If you treat decline as just what happens to old people in hospital, nobody does anything about it. If you treat it as a complication of immobility, it gets prevented like any other complication.
Frailty is a state of reduced reserve across several body systems, which leaves somebody vulnerable to a disproportionate deterioration after a fairly small stressor. An admission for a urinary tract infection is a small stressor for a fit 70 year old and a very large one for a frail 85 year old.
Kortebein and colleagues (JAMA 2007) measured around 0.95kg of lean leg mass lost over ten days of bed rest in healthy older volunteers with an average age of 67. Those were healthy people. The same absolute loss in somebody with established sarcopenia has a far bigger effect, because they were already close to the strength they need to stand up.
It helps to think of it as a margin rather than a rate. Two people can lose the same amount of muscle. Only one of them drops below the line where independent transfers stop being possible.
Every turn of that cycle costs function that’s harder to get back than it was to lose. Boyd and colleagues (JAGS 2008) followed older adults for a year after an acute admission and found that recovery of pre-admission activities of daily living is variable and often incomplete. That’s the whole argument for prevention over rehabilitation.
These figures describe older inpatients specifically. Each has its caveats, set out in full on the evidence page.
Discharged with a new disability in an activity of daily living (Covinsky, JAMA 2011).
British Geriatrics Society figure, 2017. The upper end of a range, from an advocacy resource rather than a single study.
What older inpatients actually do, despite most being able to walk (Brown, JAGS 2009).
A meaningful proportion never get back to their pre-admission level (Boyd, JAGS 2008).
Risk identification is only worth doing if it changes what happens that day. Two tools are named in NHS England’s Model discharge pathway (July 2026), and both are quick enough to use routinely.
| Tool | What it does | How to use the result |
|---|---|---|
| Clinical Frailty Scale | A nine-point judgement-based scale from very fit to terminally ill, based on how the person was two weeks before the acute illness. | A score of 5 or above identifies patients for whom a day in bed costs disproportionately. Use it to prioritise early therapy assessment and daily out-of-bed targets, not just to inform escalation decisions. |
| 4AT | A rapid screen for delirium and cognitive impairment, taking around two minutes and needing no special training. | A positive screen should trigger both delirium management and a mobility plan, because immobility and delirium feed each other. |
| Recorded functional baseline | A plain-language record of what the person could do a week before admission: walking, stairs, washing, dressing, toileting. | The Model discharge pathway asks for this specifically, so goals can be set for getting back to that level. Without it, decline is invisible and “medically fit” becomes the only available test. |
The failure mode here is well known. Scores get recorded, nothing changes, and the whole exercise becomes a box-tick that eats time and produces nothing. A frailty score is only worth collecting if a high score triggers something different before the shift ends.
The bundle is the same as for any inpatient, but the margin for error is smaller and the timescale is shorter.
It’s easy to write about this subject in a way that treats older patients as a problem to be managed, and the evidence doesn’t support that at all.
A fortnight ago, most of the people described on this page were doing their own shopping and looking after grandchildren. They’re at higher risk because they have less reserve to spend, not because they’re less worth spending it on. The British Geriatrics Society campaign line, “sit up, get dressed, keep moving”, is deliberately about what people should be doing rather than what’s wrong with them.
On the equipment side, our post on high back chairs for hospital wards covers the seating most often used with this group.
No. The British Geriatrics Society position is that deconditioning is preventable and largely reversible, and that it results from inactivity rather than from ageing itself. Older people living with frailty decondition faster because they start with less physiological reserve, so the same absolute muscle loss has a bigger effect on what they can do. Treating decline as inevitable is the main reason it goes unaddressed.