Longevity & AgingBlood Flow Restriction Boosts Interval Training Results Across Key Fitness Markers
A systematic review and meta-analysis of 24 studies (621 participants) found that combining blood flow restriction (BFR) with interval training (IT) produces significantly greater improvements than IT alone across multiple fitness domains. IT+BFR improved maximal oxygen uptake (VO2max), anaerobic power, muscle strength, muscle endurance, time to fatigue, and maximal aerobic speed. Key moderators included training status, interval intensity, exercise mode, and cuff width. Trained individuals and those using supra-maximal or moderate intensities saw the largest VO2max gains. A cuff width threshold of 8.23 cm was identified as the minimum needed for significant VO2max improvement. The findings support IT+BFR as a practical, scalable strategy for enhancing both aerobic and muscular fitness while potentially reducing injury risk from high external training loads.
