Intrinsic capacity has become a central concept in the science of healthy ageing since the WHO first defined it in 2015. In 2017, the organization proposed a five-dimensional model comprising mobility, vitality (often operationalized as nutrition), cognition, sensory function and psychosocial function. Unlike disease-oriented measures, intrinsic capacity captures the functional reserve of an ageing body and mind, and its trajectory is dynamically reversible: decline can be slowed, halted and in some domains even reversed if deficits are identified early. That reversibility is precisely what the Ningbo team set out to exploit at the vulnerable transition point between hospital and home.

The clinical problem the researchers targeted is well documented. Hospital stays are steadily shortening as health systems push to use medical resources more efficiently, which means most older patients with chronic conditions must continue rehabilitation and care at home or in community settings. Patients who leave hospital without adequate understanding of their condition or preparation for home-based care face a heightened risk of unplanned readmission, and each such setback can accelerate the loss of functional capacity. Reported rates of intrinsic capacity decline among older patients range widely, from roughly 19 percent to as high as 98 percent, underscoring both the prevalence and the variable severity of the problem.

Between December 2023 and June 2024, the researchers enrolled 112 geriatric inpatients aged 65 or older and randomly assigned them in a 1:1 ratio to a control group receiving routine care or an experimental group receiving routine care plus an ICOPE-based discharge planning service. Randomization used a random number table generated with SAS 9.4 software by a researcher not involved in recruitment or the intervention, with allocation cards sealed in opaque envelopes. Outcome assessors and statistical analysts were blinded to group allocation, although participants and care providers could not be, given the nature of the service. The trial was registered with ISRCTN and approved by the hospital’s ethics committee, and all participants gave written informed consent.

The intervention itself was elaborate. A multidisciplinary team — two geriatricians, four nurses including specialist and head nurses, a dietitian, a rehabilitation therapist and a pharmacist, all with more than five years of clinical experience — completed a two-month training programme before the trial began. Upon admission, each patient was assessed across the five intrinsic capacity domains using validated instruments: the Short Physical Performance Battery for mobility, the Saint Louis University Mental Status examination for cognition, the Geriatric Depression Scale-Short Form for psychological status, and the Mini Nutritional Assessment-Short Form for vitality. Individualized plans were then built from those results, following WHO’s guidelines for community interventions to manage declining intrinsic capacity.

The domain-specific prescriptions were strikingly concrete. Patients scoring low on physical performance received a standardized resistance training plan three times a week, using elastic bands for lower limbs and 550-millilitre water bottles as improvised dumbbells, supported by a training video. Those flagged for nutritional risk received weekly dietary counselling from a dietitian along with a nutrient composition conversion table. Patients with cognitive impairment took part in weekly in-hospital group cognitive stimulation — number solitaire, word association, picture memory matching, reality orientation through newspaper reading — and, after discharge, twice-daily ten-minute home training sessions supervised by caregivers who reported progress to the medical team through a dedicated WeChat group. Patients with elevated depression scores received music therapy, reminiscence therapy and narrative and emotional nursing.

Discharge itself was re-engineered. Rather than leaving timing solely to physicians’ orders, the discharge planning model used joint physician–nurse decision-making that factored in continuous care needs, social and family support and psychological readiness. Before leaving, patients and their primary caregivers received a detailed discharge plan manual, their mastery of its content was reassessed, and a discharge preparation checklist was finalized within 48 hours of departure. Post-discharge destinations were confirmed, and patient data plus care plans were transmitted to receiving institutions to maintain information continuity. Follow-up then ran for three months, beginning with a telephone check at one week and continuing biweekly, with a reassessment at the hospital’s geriatric specialty nursing clinic at the three-month mark.

The results were unambiguous. Of the 112 randomized patients, 108 completed follow-up, and an intention-to-treat analysis included all participants with missing data imputed. On the exploratory composite intrinsic capacity score, the experimental group declined by only 1.2 ± 0.2 points compared with 3.1 ± 0.3 in the control group — a mean difference of −1.9 (95% confidence interval: −2.5 to −1.3, p < 0.001). Adjusted analyses controlling for baseline scores, living status and gender showed significantly better outcomes in the intervention group on every primary continuous measure: mobility improved by an adjusted 1.8 points on the physical performance battery, cognition by 3.1 points on the mental status examination, depression scores fell by 1.6 points, and nutritional scores rose by 1.4 points (all p < 0.001). Only sensory function, assessed by self-report, showed no difference between groups. A sensitivity analysis treating the continuous domain scores as separate outcomes confirmed the robustness of the composite findings, and no intervention-related or serious adverse events were reported.

The contrast with routine care was telling. In the control group, the median physical performance score actually slipped from 8.5 to 8 over the three months, a natural decline in mobility once patients left the structured hospital environment; only a modest, statistically insignificant change appeared in any other domain. In the experimental group, all four measured domains improved significantly. The authors note that baseline imbalances in living status and gender, though not statistically significant, were clinically meaningful — the control group contained more patients living alone, who typically have less social support — and including these variables as covariates did not weaken the intervention effect. If anything, the disadvantage faced by the control group makes the positive results more compelling, since those patients had the least support to improve.

The study is, according to its authors, the first to integrate the ICOPE concept with discharge planning, and it arrives with caveats. The sample was small, follow-up lasted only three months, sensory function was measured with a single self-report question rather than objective vision or hearing tests, and the composite score remains an exploratory tool validated in a pilot of just 30 patients. The intervention also demanded abundant multidisciplinary resources and two months of team training that primary care facilities may struggle to replicate, and the more frequent contact experienced by the intervention group raises the possibility of an attention effect. Even so, the findings offer a concrete template for transitional care at a moment when roughly 85 percent of older adults receive care in community settings while the vast majority of nurses work in hospitals. Closing that staffing gap, the results suggest, may begin with what happens in the 48 hours before an older patient walks out of the hospital door.

Subject of Research: Effect of ICOPE-based discharge planning on intrinsic capacity decline in older hospitalized adults

Article Title: Effect of discharge planning rooted in the integrated Care for Older People Concept on the maintenance of intrinsic capacity in older adults

Article References: Zheng, D., Xu, R., Cai, S., Pang, D., Zhang, X., Zhu, Y., & Zhao, M. (2026). Effect of discharge planning rooted in the integrated Care for Older People Concept on the maintenance of intrinsic capacity in older adults. Frontiers in Public Health, 14, Article 1838558. https://doi.org/10.3389/fpubh.2026.1838558

Image Credits: AI Generated

DOI: 10.3389/fpubh.2026.1838558

Keywords: intrinsic capacity, healthy ageing, discharge planning, integrated care for older people, geriatrics, randomized controlled trial, transitional care, older adults, multidisciplinary team, WHO ICOPE guidelines, nursing, hospital discharge