Physical Prehabilitation for Older Patients with Cancer before Complex Medical-Surgical Interventions: An Umbrella Review.

Prehabilitation has become a field of increasing interest over recent decades. However, few studies specifically investigated prehabilitation for older patients with cancer. The objective of this umbrella review was to summarize evidence on prehabilitation programs to identify the physical interventions that may be applied with benefit to older cancer patients who will undergo complex medical-surgical procedures. The protocol was registered in Prospero. Major databases, namely PubMed, Embase, CINAHL, Cochrane, Web of Science and Prospero, were searched until summer 2020 and a second search was performed until November 2023. All systematic reviews and meta-analyses were included, dealing with the major topic of prehabilitation for older patients with cancer diagnosis. Among 1425 records (633 until 2020, 792 until November 2023), 14 reviews were selected for inclusion. According to the AMSTAR-2 checklist, the median quality score was 11 (range: 5-12). Total duration of prehabilitation ranged from 1 to 5 weeks, session duration from 20 to 50 minutes, session frequency from 3 to 6 per week. Reported program modes were aerobic and resistance exercises. Concerning the outcome measures, the functional as well as the respiratory status was significantly affected. Quality of life did not benefit significantly, but showed a positive trend. The length of hospital stay was not significantly improved in the majority of the studies. In contrast, most systematic reviews reported significantly lower numbers of total postoperative complications. Functional recovery was enhanced in half of the found reviews. Prehabilitation is a growing field, notably also in reviews focussing on oncological care for elderly patients included in this umbrella review. Aerobic and resistance exercises are the core of the majority of the programs evaluated but their characteristics (total duration, frequency) are partly heterogeneous. Prehabilitation for older patients may also include other modalities of geriatric interventions like nutritional or psychological optimization.