Exercise-based prehabilitation before lung cancer surgery cuts postoperative pulmonary complications roughly in half and shortens hospital stays by about two days, though evidence certainty ranges from moderate to very low across outcomes [A tier to C tier].
Researchers conducted a systematic review and meta-analysis of 29 randomized controlled trials involving 2,900 patients undergoing lung cancer surgery. The question was straightforward: does structured exercise training before surgery reduce complications in the weeks after?
The findings were substantial. Compared to standard perioperative care, preoperative exercise-based prehabilitation reduced the overall risk of postoperative pulmonary complications by 58 percent (RR = 0.42, 95% CI 0.33-0.53). This result showed no meaningful study-to-study variation (I2 = 0%), suggesting consistent effects across different trial designs. When researchers examined specific complication types, the benefits remained robust: pneumonia or pulmonary infection dropped by 48 percent, atelectasis (collapsed lung tissue) by 64 percent, and respiratory failure by 63 percent. Hospital length of stay shortened by an average of 2.22 days.
The mechanisms are physiologically coherent. Preoperative exercise enhances aerobic capacity, strengthens respiratory muscles, and improves functional reserve before surgery depletes it. Patients with better baseline fitness enter the perioperative period with greater metabolic buffer against tissue damage and inflammatory cascades triggered by surgery itself. This reserve may be the difference between routine recovery and complications.
However, certainty matters. The authors applied GRADE methodology (the gold standard for evidence assessment) and reported that evidence certainty ranged from moderate to very low across different outcomes. Results for functional improvement, measured by preoperative six-minute walk distance, were inconsistent and too heterogeneous to pool statistically. This inconsistency suggests variation in how prehabilitation protocols were designed, delivered, and measured across trials, which is the core limitation of the field right now.
If you're facing lung cancer surgery, the signal here is clear enough to warrant discussion with your surgical team: structured preoperative exercise appears to materially reduce serious respiratory complications. This isn't speculative. The absolute risk reduction is substantial, and consistency across pneumonia, atelectasis, and respiratory failure outcomes suggests a genuine physiological effect rather than noise.
The practical implication: prehabilitation should be treated as part of surgical preparation, not optional supplementation. Patients who currently receive only standard preoperative counseling are likely missing a high-impact intervention. Starting structured exercise 2-4 weeks before surgery appears optimal, though the review didn't analyze dose-response relationships in detail.
What remains uncertain is whether gains in six-minute walk distance (a standard fitness measure) correlate with complication reduction, and whether all prehabilitation protocols perform equally. The field is generating consistent safety data, but protocol standardization is the next frontier. If you pursue this, establish baseline fitness with your surgical team before starting, and clarify monitoring protocols with your prehabilitation provider.
The shortening of hospital stay by 2.22 days carries both clinical and personal weight: faster discharge typically signals lower complication risk and better trajectory toward normal function.
| Parameter | Details |
|---|---|
| Study type | Systematic review and meta-analysis |
| Number of trials included | 29 randomized controlled trials |
| Total participants | 2,900 adults undergoing lung cancer surgery |
| Intervention | Preoperative exercise-based prehabilitation vs. usual perioperative care |
| Primary outcomes | Postoperative pulmonary complications (overall, pneumonia/infection, atelectasis, respiratory failure) |
| Secondary outcomes | Hospital length of stay, functional measures (6-minute walk distance) |
| Evidence assessment | GRADE approach for certainty evaluation; Cochrane RoB 2 for bias assessment |
| Key finding | 58% reduction in overall PPCs; 2.22-day reduction in hospital stay |
| Evidence certainty | Moderate to very low (varies by outcome) |
| Heterogeneity | Low for primary complication outcomes (I2 = 0%); high for functional measures |
| Registration | PROSPERO identifier CRD420251273259 |
| Journal |
Primary source: Jing C, et al. Preoperative exercise-based prehabilitation for reducing postoperative pulmonary complications after lung cancer surgery: a systematic review and meta-analysis. *Frontiers in Medicine*. 2025. PubMed: 42656529
Study registration: PROSPERO CRD420251273259
ProtocolEngine provides general health information based on published research. This is not medical advice. Consult a healthcare professional before starting any supplement or health protocol.
| Publication year | 2025 |