Reliability of near-infrared spectroscopy in measuring muscle oxygenation during squat exercise

Monitoring of changes in skeletal muscle oxygenation during exercise has increased in recent years. Tissue oxygenation, which is related to fatigue and muscle hypertrophy, is often measured using near-infrared spectroscopy (NIRS). This study aimed to determine the test-retest reliability of a non-po...

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Bibliographic Details
Published in:Journal of science and medicine in sport 2024-11, Vol.27 (11), p.805-813
Main Authors: Corral-Pérez, Juan, Marín-Galindo, Alberto, Costilla, Manuel, Casals, Cristina, Muñoz-López, Alejandro, Sánchez-Sixto, Alberto, Sañudo, Borja, Ponce-González, Jesús Gustavo
Format: Article
Language:English
Subjects:
Exercise
Exercise prescription
Fatigue
Full squat
Hypertrophy
Hypoxia
NIRS
Oxygen saturation
Performance evaluation
Physical fitness
Resistance training
Spectrum analysis
Sport science
Strength training
Velocity
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Summary:Monitoring of changes in skeletal muscle oxygenation during exercise has increased in recent years. Tissue oxygenation, which is related to fatigue and muscle hypertrophy, is often measured using near-infrared spectroscopy (NIRS). This study aimed to determine the test-retest reliability of a non-portable NIRS (NIRO200Nx) during the full-squat exercise and recovery in young healthy men. Twenty-five male participants (21.8 ± 2.6 years) were recruited for this original research. Each participant completed an 8-repetition test with a load that elicited a velocity of 1 m·s−1. The test was conducted twice, with a 48-hour washout period between sessions. The NIRS measured the changes of oxygenated-Hemoglobin (O2Hb), deoxygenated-Hemoglobin (HHb) and Tissue Oxygenation Index (TOI) in both Vastus Lateralis and Vastus Medialis during rest, exercise, and recovery. Coefficient of Variation (CV), Standard Error Measurement (SEM) and Intraclass Correlation Coefficient (ICC) were used to evaluate the reliability of the data. Significance was set at p 
ISSN:1440-2440
1878-1861
1878-1861
DOI:10.1016/j.jsams.2024.07.006