Immobility in old age denotes the state of strongly reduced physical activity — complete bed rest, restricted gait, wheelchair dependence, dependence in everyday activities. It is rarely the consequence of a single event but usually the result of a cascade:
Every day in bed or in an armchair changes the body measurably. The most important changes:
Muscle loss
Up to 1 to 3 percent of muscle mass per day with strict bed rest. In an older patient bedridden for a week, up to 10 percent of muscle mass can be lost. The rebuilding takes two to three times as long as the loss. This process is closely connected with the development of sarcopenia.
Loss of bone density
With prolonged immobilization the bone density falls measurably — bone remodeling responds to load. No pull, no build-up. This increases the fracture risk after getting up again and can considerably worsen an existing osteoporosis in old age.
Circulatory changes
The cardiovascular system rapidly loses performance during immobilization. Orthostatic dysregulation — a drop in blood pressure on standing up — develops within a few days and leads to dizziness and falls during attempts at mobilization.
Lung function
Shallow breathing when lying down, reduced diaphragm movement, secretion build-up in the lower lung sections — the conditions for pneumonia in old age arise after just a few days of bed rest.
Coagulation system
The venous stasis in immobility markedly increases the risk of deep vein thrombosis and pulmonary embolism. This is why thrombosis prophylaxis in hospital is standard in bedridden older patients — particularly in the presence of simultaneous anticoagulation.
Skin
Pressure on the heels, sacrum and shoulder blades over hours leads to pressure ulcers (decubitus). In old age, with thin skin and reduced circulation, particularly quickly.
Digestion
Constipation is the rule, not the exception. Reduced activity, less fluid, medication side effects, altered food intake — everything contributes. There is an additional risk of malnutrition in old age.
Cognition and psyche
Immobility intensifies the risk of delirium, depression in old age and cognitive deficits. Whoever no longer moves receives fewer stimuli — and the brain responds to that.
→ On the central role of muscle loss: Sarcopenia in old age.
→ On delirium prevention through mobilization: Delirium prevention.
→ On pneumonia prevention: Pneumonia in old age.
- Hospital stay: Often more inactivity than necessary. Studies show: older patients spend up to 83 percent of the time in bed in hospital — usually without medical reason.
- Operations: Particularly orthopedic, but also abdominal surgery. Pain, catheters, drains and fear promote bed rest. The surgical risk in old age rises considerably with pre-existing immobility.
- Falls: After a fall many patients develop a fear of the next fall — the so-called post-fall syndrome. More on this: Falls in old age.
- Chronic pain: With inadequately treated pain the patient avoids movement — and thereby worsens their situation.
- Stroke: Hemiparesis and spasticity require targeted rehabilitation, otherwise a progressive immobilization develops quickly.
- Dementia: Loss of orientation, fear of the surroundings, disturbed action planning. More on this: Dementia in old age.
- Depression: Loss of drive in every third older patient with severe depression in old age.
→ On fall work-up and aftercare: Falls in old age and fall prevention.
→ On depression as a brake on mobility: Depression in old age.
The evidence is overwhelming. Early mobilization — not cautious waiting — demonstrably reduces:
- The pneumonia rate by 30 to 50 percent
- Thromboembolisms
- Pressure ulcers
- Delirium incidence
- Hospital length of stay by 1 to 3 days
- Nursing home admissions after a hospital stay
- Mortality after hip fracture and severe illness
Modern fast-track concepts after operations — mobilization on the day of surgery or at the latest on day 1 — have dramatically shortened recovery times. What was long considered risky (getting up on the day of surgery) is today the gold standard of care — also a core element of early geriatric rehabilitation.
Concrete stages of mobilization
- Step 1: Raise up in bed, sit on the edge of the bed
- Step 2: Brief standing with assistance
- Step 3: A few steps in the room with a walking aid and accompaniment
- Step 4: Meals seated at the table instead of in bed
- Step 5: Structured walking exercises in the corridor, then without accompaniment
- Step 6: Independent small activities — washing, brushing teeth, dressing
???? The most important sentence on mobilization in hospital: “Eat sitting up, not lying down.” Whoever sees this one rule through reduces the aspiration risk, promotes breathing, posture and independence — and has achieved the first mobilization gain every day.
Most immobility cascades begin not in hospital but in everyday life. Whoever prevents the radius of movement from shrinking at home often prevents the first domino:
- Regular physical activity: Daily walks, targeted strength and balance training two to three times a week — effective also against frailty.
- Social participation: Whoever goes out, moves. Whoever has visitors, stands up. Seniors’ meet-ups, club activities and volunteering have a physical effect.
- Optimize pain therapy: Uncontrolled pain leads to taking it easy and thus to decline. Better targeted therapy that makes movement possible.
- Fall work-up after the first fall: Before the spiral of fear, clarify the cause and train. More on this: Fall prevention.
- Medication review: Sedating preparations that promote gait unsteadiness are often underestimated. Structured deprescribing can be decisive here.
- Provision of aids: A well-fitted rollator makes movement possible — a poorly fitted rollator increases the fall risk. Instruction by physiotherapy is not a luxury.
For people who are in need of care or bedridden, the issue is not full mobility but the preservation of every available function:
- A change of position at least every 2 to 4 hours for pressure-ulcer prophylaxis
- Passive movement exercises by carers or physiotherapy for contracture prophylaxis
- Sitting up in bed, ideally daily
- Transfer to the chair or wheelchair for meals
- Structured respiratory therapy for pneumonia prophylaxis
- Thrombosis prophylaxis with medication and with compression stockings
- Oral care for pneumonia prevention — often underestimated, very effective
In patients who have suffered considerable functional losses through an acute illness, early geriatric rehabilitation is the most effective instrument. It combines medical care with intensive physiotherapy, occupational therapy, speech-and-language therapy and nursing — all with the aim of finding the way out of immobility back into everyday life. In many cases it is the difference between a return home and a nursing home. The geriatric assessment forms the basis for the individual rehabilitation plan.
→ On early geriatric rehabilitation.
- Be active in hospital: Walk a few steps together, encourage the patient to mobilize, sit them up for meals.
- Ask and insist: If the patient lies in bed every day, ask about physiotherapy, a mobilization plan, early rehabilitation.
- Promote movement at home: Joint walks, small tasks such as emptying the letterbox, doing the shopping together.
- Have aids fitted: Not just any rollator — a properly adjusted one. Involve physiotherapy or a medical supply store.
- After falls, not taking it easy but a work-up: And subsequently structured training.
- Avoid overexertion: The dosing must be individual. Adaptation, not overexertion.
- With increasing gait unsteadiness, a tendency to fall or fear of falling
- After a hospital stay with marked functional loss
- At the onset of an immobilization cascade (increasing sitting, fewer activities)
- With unclear weakness, tiredness or declining resilience — possible signs of a frailty syndrome
- With pain that restricts movement
- With a combination of several problems — heart disease in old age, depression, polypharmacy in old age
→ On the structured overall evaluation: Geriatric assessment.
→ On the role of frailty as the basis of mobility: Frailty syndrome.
