Calculating Load and Intensity Using Muscle Oxygen Saturation Data

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dc.contributor.authorVasquez-Bonilla, Aldo
dc.contributor.authorYáñez-Sepúlveda, Rodrigo
dc.contributor.authorGómez-Carmona, Carlos D.
dc.contributor.authorOlcina, Guillermo
dc.contributor.authorOlivares-Arancibia, Jorge
dc.contributor.authorRojas-Valverde, Daniel
dc.date.accessioned2024-05-20T21:11:58Z
dc.date.available2024-05-20T21:11:58Z
dc.date.issued2024-04-04
dc.descriptionIndexación: Scopus.
dc.description.abstractThe study aimed to calculate training intensity and load using muscle oxygen saturation (SmO2) during two differentiated physical tasks. 29 university athletes participated in a 40-m Maximal Shuttle Run Test (MST, 10 × 40-m with 30 s recovery between sprints) and a 3000-m time trial run. Distance and time were used to calculate external load (EL). Internal load indicators were calculated based on percentage of maximum heart rate (%HRMAX) and SmO2 variables: muscle oxygen extraction (∇%SmO2) and the cardio-muscle oxygen index (CMOI) was also provided by relating ∇%SmO2 ÷ %HRMAX, and the training load were calculated as the product of speed (m/min × IL) and the efficiency index [Effindex (m/min ÷ IL)]. A student t test was applied based on Bayesian factor analysis. As expected, EL differed in the 40-m MST (331 ± 22.8) vs. 3000-m trials (222 ± 56.8) [BF10 = 6.25e+6; p = <0.001]. Likewise, IL showed higher values in 40-m MST (39.20 ± 15.44) vs. 3000-m (30.51 ± 8.67) in CMOI: [BF10 = 1.70; p = 0.039]. Training load was greater in 40-m MST (85.77 ± 27.40) vs. 3000-m (15.55 ± 6.77) [(m/min × ∇%SmO2): BF10 = 12.5; p = 0.003] and 40-m MST (129.27 ± 49.44) vs. 3000-m (70.63 ± 32.98) [(m/min × CMOI): BF10 = 169.6; p = <0.001]. Also, the Effindex was higher in 40-m MST (10.19 ± 4.17) vs. 3000-m (6.06 ± 2.21) [(m/min × ∇%SmO2): BF10 = 137.03; p = <0.001] and 40-m MST (9.69 ± 4.11) vs. 3000-m (7.55 ± 1.87) [(m/min × CMOI): BF10 = 1.86; p = 0.035]. This study demonstrates calculations of training intensity and load based on SmO2 as an internal load indicator along with speed as an external load indicator during two differentiated exercises.
dc.identifier.citationSports Open Access Volume 12, Issue 4 April 2024 Article number 113
dc.identifier.issn20754663
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/56957
dc.language.isoen
dc.publisher20754663
dc.subjectexercise efficiency
dc.subjectexercise physiology and physical performance
dc.subjectmuscle oxygenation
dc.subjecttraining load
dc.titleCalculating Load and Intensity Using Muscle Oxygen Saturation Data
dc.typeArtículo
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