Effects of intermittent pneumatic compression on the recovery of cardiovascular parameters after repeated sprint exercise

Purpose Intermittent pneumatic compression (IPC) applies gradual pressure to facilitate lymph and blood flow movement to reduce exercise-induced tissue fluid accumulation and plasma volume loss. This study aimed to evaluate the cardiovascular system response during the recovery with IPC compared with passive recovery (Sham). Methods Sixteen volunteers (7 females and 9 males) executed a cycling-based exhausting sprint interval exercise (8x20 s all out), followed by a 30-min IPC or Sham condition. Participants performed two trials in a randomised, counterbalanced, and crossover design. Several cardiovascular parameters (blood pressure, heart function, and peripheral vascular resistance) were recorded at baseline (5'), through the recovery protocol (30'), and afterwards (5'). Results The use of IPC during the recovery phase led to a faster recovery, stated in relative values to pre-exercise, in mean blood pressure (102.519.3% vs. 92.7 +/- 12.5%; P<0.001), and cardiac output (139.8 +/- 30.0% vs. 146.2 +/- 40.2%; P<0.05) in comparison to Sham condition. Furthermore, during the IPC-based recovery, there was a slower recovery in cardiac pressure change over time (92.5 +/- 25.8% vs. 100.5 +/- 48.9%; P<0.05), and a faster return to pre-exercise values in the peripheral vascular resistance (75.2 +/- 25.5% vs. 64.8 +/- 17.4%; P<0.001) compared to Sham. Conclusion The application of IPC after high-intensity exercise promotes the recovery of the cardiovascular system, reducing cardiovascular strain. Future investigations should consider the effects on the sympathetic-parasympathetic balance, such as heart rate variability, to assess further bonds between the use of IPC and autonomous control.