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Hemodynamic function during finger force production tasks in healthy adults
Luca Pollonini1,2, Lena Younes3, Stacey L Gorniak3,4
1Department of Engineering Technology, University of Houston, Houston, Texas, USA.
Muscle & Nerve
|December 10, 2016
Summary
Near-infrared spectroscopy (NIRS) successfully monitored forearm muscle oxygenation during maximal handgrip exercises. Reduced hemoglobin (HbR) increased as force declined, while oxygenated hemoglobin (HbO) remained constant, establishing baseline hemodynamic function.
Area of Science:
- Physiology
- Biomedical Engineering
- Sports Science
Background:
- Near-infrared spectroscopy (NIRS) is a noninvasive method for assessing muscle hemodynamics.
- Understanding baseline muscle oxygenation is crucial for diagnosing vascular conditions.
Purpose of the Study:
- To evaluate changes in forearm muscle oxygenation during sustained maximal force production.
- To establish baseline hemodynamic function in healthy young adults using NIRS.
- To assess the correlation between force production and muscle oxygenation.
Main Methods:
- Near-infrared spectroscopy (NIRS) was employed to monitor reduced hemoglobin (HbR) and oxygenated hemoglobin (HbO) in forearm muscles.
- Participants performed sustained maximal force production tasks, specifically handgrip exercises.
- Hemodynamic responses were monitored in real time during the force production tasks.
Main Results:
- Maximal force production significantly declined during handgrip exercises.
- Reduced hemoglobin (HbR) levels increased, while oxygenated hemoglobin (HbO) levels remained constant.
- A negative correlation was observed between force production and HbR (r = -0.48), and a positive correlation between force and HbO (r = 0.18).
Conclusions:
- NIRS is effective in monitoring the correlation between force production and forearm hemodynamic measures.
- The study successfully established baseline muscle oxygenation data in a healthy population.
- These findings provide a foundation for using NIRS as a diagnostic tool for peripheral vascular disease.
