Reliability of NIRS portable device for measuring intercostal muscles oxygenation during exercise

Contreras-Briceño, Felipe; Espinosa-Ramírez, Maximiliano; Hevia, Gonzalo; Llambias, Diego; Carrasco, Miguel; Cerda, Francisco Hernández; López‐Fuenzalida, Antonio; Garcia, Patricio; Gabrielli, Luigi; Viscor, Ginés

doi:10.1080/02640414.2019.1653422

Cited by 25 publications

(38 citation statements)

References 38 publications

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“…Moreover, we found a moderate association of maximum SmO2 changes between muscle groups (Figure 3c). This is consistent with our previous results, where we found a direct association between SmO2-m.intercostales and SmO2-m.vastus laterallis in marathon runners, although in such study, the variables were presented as absolute values (%) and not as relative maximal changes (SmO2) [20]. Furthermore, this seems to be consistent with the physiological responses reported in competitive athletes.…”

Section: Discussionsupporting

confidence: 93%

“…SmO2 decreased in VT1, VT2, and ̇O 2-peak phases compared to rest levels, whereas THb did not change (Table I). These data are consistent with previous reports, confirming the replicability of our exercise protocol [20]. It could be hypothesized that the change in breathing pattern during an incremental exercise in our participants, both before and after reaching VT2, could optimize to the SmO2-m.intercostales.…”

Section: Discussionsupporting

confidence: 93%

“…The light penetration depth is half of the distance between the emitting source and the detector (±12 mm) [19]. To determine the SmO2-m.intercostales, a MOXY  device was located in the seventh intercostal space of the anterior axillary line of the right hemithorax [20]. A second MOXY  device was placed 5 cm lateral to the midpoint of the imaginary line between the upper edge of the patella and the greater trochanter of the right femur [20].…”

Section: Measurement Of Smo2mentioning

confidence: 99%

“…To determine the SmO2-m.intercostales, a MOXY  device was located in the seventh intercostal space of the anterior axillary line of the right hemithorax [20]. A second MOXY  device was placed 5 cm lateral to the midpoint of the imaginary line between the upper edge of the patella and the greater trochanter of the right femur [20]. The position of both MOXY  devices was attached to the skin using the material suggested by the manufacturer, in addition to extra fixation with a cohesive band on the surroundings of the measurement zone, avoiding excessive compression that could alter the SmO2 record (similar to that used in our previous study) [20].…”

Section: Measurement Of Smo2mentioning

confidence: 99%

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Intercostal Muscles Oxygenation and Breathing Pattern during Exercise in Competitive Marathon Runners

Contreras-Briceño

Espinosa-Ramírez

Moya-Gallardo

et al. 2021

Preprint

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The study aimed to evaluate the association between the changes in ventilatory variables (tidal volume (Vt), respiratory rate (RR), and lung ventilation (VE)) and deoxygenation of m.intescostales (∆SmO2-m.intercostales) during a maximal incremental exercise in nineteen male competitive marathon runners. The ventilatory variables and oxygen-consumption (VO2) were recorded breath-by-breath by exhaled gas analysis. A near-infrared spectroscopy device (MOXY) located in the right-hemithorax allowed recording SmO2-m.intercostales. To explore changes in oxygen levels in muscles with high demand during exercise, a second MOXY records SmO2-m.vastus laterallis. The triphasic model of exercise intensity was used for evaluating changes in SmO2 in both muscle groups. We found that ∆SmO2-m.intercostales correlated with VO2-peak (r=0.65; p=0.002) and the increase of VE (r=0.78; p=0.001), RR (r=0.54; p=0.001), but not Vt (p=0.210). The interaction of factors (muscles X exercise-phases) in SmO2 expressed as an arbitrary unit (a.u) was significant (p=0.005). At VT1 were no difference (p=0.177), but SmO2-m.intercostales was higher at VT1 (p&lt;0.001) and VO2-peak (p&lt;0.001). In competitive marathon runners, the m.intercostales deoxygenation during incremental exercise is directly associated with the aerobic capacity and increased lung ventilation and respiratory rate, but not tidal volume. Besides, it shows less deoxygenation than m.vastus laterallis at intensities above the aerobic ventilatory threshold.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 93%

Section: Measurement Of Smo2mentioning

confidence: 99%

Section: Measurement Of Smo2mentioning

confidence: 99%

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Intercostal Muscles Oxygenation and Breathing Pattern during Exercise in Competitive Marathon Runners

Contreras-Briceño

Espinosa-Ramírez

Moya-Gallardo

et al. 2021

Preprint

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“…This effect is similar to the "super-compensation principle" of training (Doering, Coxa, Aretac, & Coffeya, 2019). Not all authors value this phase of recovery (Contreras Briceño et al, 2019); however, we think it may be interesting when using the Humon Hex® device to conduct training and schedule the return to calm.…”

Section: Discussionsupporting

confidence: 54%

Quadriceps Muscle Oxygenation during a Maximum Stress Test in Middle-Aged Athletes

Paredes-Ruiz¹,

Jodar-Reverte²,

Ferrer-López³

et al. 2020

Monten. J. Sports Sci. Med.

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Determining oxygen muscle saturation (SmO 2 ) using near-infrared spectroscopy (NIRS) is an emerging technique that is increasingly used in sports science; therefore, it is necessary to know its results in different population groups. We analysed it in a group of recreational participants in Nordic Walking. The purpose of this research was to analyse the SmO 2 values obtained at various times from testing in a group of athletes over 45. Thirty athletes (18 males) with a mean age of 51.3 years completed a maximal exercise testing in treadmill according to a modified Bruce protocol on a ramp. The electrocardiogram was continuously monitored. We measured VO 2 max (Metalyzer 3B). In addition, we placed a Humon Hex device on the right thigh to measure quadriceps oxygenation. Heart rate, VO 2 , and SmO 2 ratios were obtained based on the exercise intensity. We obtained a SmO 2 at startup of 63.3%, standard deviation (SD) 9.2%; SmO 2 declined 61.8%, SD 11.4%; SmO 2 in VO 2 max 57.4% SD 10.2% and SmO 2 5 minutes after starting recovery 72.5% SD7.9%. There was a relationship between ventilatory thresholds and variations in SmO 2 . There were no significant differences between the sexes. We could conclude that the minimum values of SmO 2 were related to the VO 2 max. During the recovery phase, the values were higher than at rest. The information obtained could be used to control and plan the training. KEY WORDS nordic walking, muscle oxygenation, maximal exercise testing ORIGINAL SCIENTIFIC PAPER

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Muscle oxygenation of the paretic and nonparetic legs during and after exercise in chronic stroke: Implications for mobility

Whyte

Thomas

Marzolini

2023

PM&R

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BackgroundOxygen delivery and demand are reduced in the paretic leg of individuals after stroke. However, it is unknown how muscle oxygenation, the balance between delivery and utilization of oxygen at the muscle, is altered post‐stroke during aerobic exercise and how it relates to mobility.ObjectiveTo monitor muscle oxygenation changes between the paretic and nonparetic legs of individuals after stroke during treadmill exercise and the 6‐minute walk test and analyze the association with mobility.DesignCross‐sectional study.SettingCardiac rehabilitation program.PatientsEleven male participants were enrolled in the study. Ten men (30.8 ± 4.1 months post‐stroke; age 63.9 ± 13.9 years) with hemiparetic gait pattern finished the study.Methods or interventionsNot applicable.Main outcome measuresMuscle oxygenation was measured with near‐infrared spectroscopy placed on the vastus lateralis of each leg during treadmill exercise at the first ventilatory threshold and during a 6‐minute walk test.ResultsThe desaturation slope during treadmill exercise was significantly steeper (p = .047) in the paretic (−0.7 ± 0.6%/s) compared to the nonparetic leg (−0.3 ± 0.2%/s). There was no other significant difference between legs. The 6‐minute walk test distance was not correlated with 6‐minute walk test muscle oxygenation in either leg (paretic: r = 0.20, p = 0.590; nonparetic: r = 0.42, p = .232).ConclusionsAt the onset of treadmill exercise, the paretic leg was unable to effectively match the oxygen demand and extraction of the nonparetic leg, suggesting the need for an immediate cardiovascular warmup prior to initiating moderate intensity exercise in this population. Because the exercise desaturation rate is thought to indicate increased anaerobic metabolism and lactate production, efforts to delay rapid desaturation could improve the sustainability of activities of daily living and exercise.

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Reliability of NIRS portable device for measuring intercostal muscles oxygenation during exercise

Cited by 25 publications

References 38 publications

Intercostal Muscles Oxygenation and Breathing Pattern during Exercise in Competitive Marathon Runners

Intercostal Muscles Oxygenation and Breathing Pattern during Exercise in Competitive Marathon Runners

Quadriceps Muscle Oxygenation during a Maximum Stress Test in Middle-Aged Athletes

Muscle oxygenation of the paretic and nonparetic legs during and after exercise in chronic stroke: Implications for mobility

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