Key result
Preoperative HIIT improves V̇o2 peak by ~2.6 mL/kg/min and reduces postoperative complications.
Why the study?
Preoperative high-intensity interval training improves cardiorespiratory fitness and may improve surgical outcomes, but evidence comparing it with standard care needed summarization.
Does preoperative high-intensity interval training improve cardiorespiratory fitness and postoperative outcomes in adults undergoing major surgery?
Comparison
Preoperative HIIT vs standard hospital care
Design
Systematic review and meta-analysis of randomized clinical trials and prospective cohort studies
Authors
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Supports preoperative HIIT before major surgery; reinforces moderate-quality meta-analytic evidence for fitness gains and fewer complications.
Meta-Analysis (n=832)
Does preoperative high-intensity interval training improve cardiorespiratory fitness and postoperative outcomes in adults undergoing major surgery?
Effect estimate: cumulative mean difference 2.59 mL/kg/min (95% CI 1.52-3.65)
p-value: p=<.001
Preoperative high-intensity interval training significantly improves cardiorespiratory fitness and reduces postoperative complications in adults undergoing major surgery.
Clifford et al. (2023) conducted a meta-analysis in Adults undergoing major surgery (n=832). Preoperative high-intensity interval training (HIIT) vs. Standard hospital care was evaluated on Change in cardiorespiratory fitness, measured by peak oxygen consumption (V̇o2 peak) or 6-Minute Walk Test distance (cumulative mean difference 2.59 mL/kg/min, 95% CI 1.52-3.65, p=<.001). Preoperative high-intensity interval training significantly improved peak oxygen consumption (mean difference 2.59 mL/kg/min; 95% CI 1.52-3.65; P<.001) and reduced postoperative complications.
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