RT journal article
T1 Reliability of near-infrared spectroscopy in measuring muscle oxygenation during squat exercise
A1 Corral Pérez, Juan
A1 Marín Galindo, Alberto
A1 Costilla Macias, Manuel Jesús
A1 Casals Vázquez, Cristina
A1 Muñoz-López, Alejandro
A1 Sánchez-Sixto, Alberto
A1 Sañudo, Borja
A1 Ponce González, Jesús Gustavo
A2 Didáctica de la Educación FísicaPlástica y Musical
K1 NIRS
K1 Exercise prescription
K1 Resistance training
K1 Full squat
K1 Hypertrophy
AB 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).ObjectivesThis 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.DesignTwenty-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.MethodsThe 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 < 0.05.ResultsThe results indicated that TOI had good to acceptable absolute reliability (CVTOI = 2.7–10.2 %). A good relative relativity for the overall test was found for Vastus Medialis O2Hb (ICC = 0.851), HHb (ICC = 0.852), and TOI (ICC = 0.864), and Vastus Lateralis O2Hb (ICC = 0.898), HHb (ICC = 0.899), and TOI (ICC = 0.897).ConclusionsWe conclude that NIRO200Nx is a reliable instrument for measuring muscle oxygen saturation through the TOI parameter in not-to-failure dynamic resistance exercises (1 set of 8 reps against ∼ 40 % 1 repetition maximum). Tissue oxygenation assessment could be a new way of individualizing exercise through dynamic resistance exercises.
PB Elsevier
SN 1878-1861
YR 2024
FD 2024
LK http://hdl.handle.net/10498/34332
UL http://hdl.handle.net/10498/34332
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026