PMC (NIH, 2014): high-quality evidence that pre-operative exercise for patients scheduled for cardiovascular surgery is well tolerated and effective.
High-altitude trail above Sankt Moritz at dawn: firm steps on packed snow, breath visible in the cold air; no faces.
Substantial evidence for thoracic, abdominal and major joint replacement surgery.
The level of evidence: high quality
'High quality' evidence — based on RCTs and meta-analyses — is the highest level achievable.
Detail of boots and a smartwatch counting steps on a snowy ridge, raking morning light; no faces.
The effectiveness of pre-operative exercise is robust, reproducible, evidence-based medicine.
For which types of surgery it applies
A climb at altitude with a frozen Engadine lake behind, clear sky, measured aerobic effort; no faces.
Cardiovascular surgery, thoracic surgery, major abdominal surgery and major joint replacement (hip and knee prosthetics). In all contexts, better pre-operative cardiorespiratory fitness is associated with better outcomes.
Breath and stride on a snowy mountain path at first light, VO₂max as an oxygen reserve; Alpine landscape, no faces.
The high-risk patient: the most to gain
High-risk patients — elderly, obese, with cardiovascular or respiratory comorbidities — benefit most from prehabilitation.
High-altitude trail above Sankt Moritz at dawn: firm steps on packed snow, breath visible in the cold air; no faces.
Every pre-operative improvement in VO₂max has proportionally greater clinical impact.
Klinik Sankt Moritz and biological readiness certification
Detail of boots and a smartwatch counting steps on a snowy ridge, raking morning light; no faces.
At the end of each prehabilitation programme, the Digital Twin generates a certified Biological Readiness Report: VO₂max, average weekly steps, sleep variability, HRV and average nocturnal SpO₂. This accompanies the patient to the procedure.
A climb at altitude with a frozen Engadine lake behind, clear sky, measured aerobic effort; no faces.
PMC — NIH (2014) — https://pmc.ncbi.nlm.nih.gov/articles/PMC4072442/ · pmc.ncbi.nlm.nih.gov
On the same topic
- 5,000 Steps a Day Before Surgery. A Simple Protocol with a Measurable Clinical Result.Walking at 5,000 steps/day significantly improves VO₂ peak and 6MWT distance in pre-operative COPD patients.
- ERAS + Early Mobilisation: The Protocol That Transforms Surgical Recovery.ERAS and early mobilisation reduce complications, accelerate ambulation and lower hospital stay. The post-operative Gold Standard monitored by the Digital Twin.
- Exercise Before Surgery Reduces Complications by 48%. The Systematic Review Proves It.Pre-operative physical training increases VO₂max by +2 ml/kg/min and reduces post-op pulmonary complications by 48%.