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Ischemic preconditioning: exploring local ergogenic mechanisms in non-fatiguing voluntary contractions
Ruben Allois1,2, Raffaele Pertusio1, Pasquale Pagliaro2
1Department of Neuroscience, University of Torino, Torino, Italy.
Frontiers in Physiology
|April 9, 2025
Summary
Intermittent peripheral compression (IPC) did not enhance muscle performance. This study found no significant effects of IPC on hemodynamic or electromyographic responses during non-fatiguing handgrip contractions.
Area of Science:
- Exercise Physiology
- Muscle Physiology
- Sports Science
Background:
- Intermittent peripheral compression (IPC) is theorized to improve skeletal muscle performance, but evidence remains inconclusive.
- This study investigated the impact of IPC on local hemodynamic and surface electromyographic (sEMG) activity during specific muscle contractions.
Purpose of the Study:
- To evaluate the effects of IPC on muscle oxygenation and electrical activity during sustained and intermittent isometric contractions.
- To determine if IPC provides ergogenic benefits at the muscle level.
Main Methods:
- Ten male participants underwent IPC (3 cycles, 5-min ON/5-min OFF ischemia at 250 mmHg) and a SHAM procedure.
- Near-infrared spectroscopy monitored tissue oxygenation (TOI) and deoxy-hemoglobin (HHb) in forearm muscles.
- sEMG activity was recorded during sustained and intermittent isometric contractions at varying intensities (20-40% MVC) before and after interventions.
Main Results:
- No significant treatment effect of IPC was observed on hemodynamic or sEMG variables.
- A decrease in resting tissue oxygenation was noted post-treatment for both IPC and SHAM.
- Force level significantly affected all measured variables, independent of treatment or time.
Conclusions:
- IPC demonstrated no significant effect on hemodynamic or electromyographic responses during non-fatiguing handgrip contractions.
- These findings do not support the ergogenic potential of IPC at the muscle level.
- Results align with prior research on electrically stimulated contractions.
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