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Batterson PM, Kirby BS, Hasselmann G, Feldmann A. Muscle oxygen saturation rates coincide with lactate-based exercise thresholds. Eur J Appl Physiol 2023; 123:2249-2258. [PMID: 37261552 DOI: 10.1007/s00421-023-05238-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 05/19/2023] [Indexed: 06/02/2023]
Abstract
INTRODUCTION Monitoring muscle metabolic activity via blood lactate is a useful tool for understanding the physiological response to a given exercise intensity. Recent indications suggest that skeletal muscle oxygen saturation (SmO2), an index of the balance between local O2 supply and demand, may describe and predict endurance performance outcomes. PURPOSE We tested the hypothesis that SmO2 rate is tightly related to blood lactate concentration across exercise intensities, and that deflections in SmO2 rate would coincide with established blood lactate thresholds (i.e., lactate thresholds 1 and 2). METHODS Ten elite male soccer players completed an incremental running protocol to exhaustion using 3-min work to 30 s rest intervals. Blood lactate samples were collected during rest and SmO2 was collected continuously via near-infrared spectroscopy from the right and left vastus lateralis, left biceps femoris and the left gastrocnemius. RESULTS Muscle O2 saturation rate (%/min) was quantified after the initial 60 s of each 3-min segment. The SmO2 rate was significantly correlated with blood lactate concentrations for all muscle sites; RVL, r = - 0.974; LVL, r = - 0.969; LG, r = - 0.942; LHAM, r = - 0.907. Breakpoints in SmO2 rate were not significantly different from LT1 or LT2 at any muscle sites (P > 0.05). Bland-Altman analysis showed speed threshold estimates via SmO2 rate and lactate are similar at LT2, but slightly greater for SmO2 rate at LT1. CONCLUSIONS Muscle O2 saturation rate appears to provide actionable information about maximal metabolic steady state and is consistent with bioenergetic reliance on oxygen and its involvement in the attainment of metabolic steady state.
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Affiliation(s)
- Philip M Batterson
- Biological and Population Health Sciences, Oregon State University, 17 Milam Hall, Corvallis, OR, 97331, USA.
| | - Brett S Kirby
- Nike Sport Research Lab, Nike Inc, Beaverton, OR, USA
| | | | - Andri Feldmann
- Institute of Sport Science, University of Bern, Bern, Switzerland
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Chen H, Liang J, Huang W, Yang A, Pang R, Zhao C, Wu K, Wang C, Yan K, Zhang Y, Lin S, Xie Y, Wu Y, Sun J. Age-related difference in muscle metabolism patterns during upper limb's encircling exercise: a near-infrared spectroscopy study. BIOMEDICAL OPTICS EXPRESS 2022; 13:4737-4751. [PMID: 36187255 PMCID: PMC9484442 DOI: 10.1364/boe.462551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/24/2022] [Accepted: 07/10/2022] [Indexed: 06/16/2023]
Abstract
Aging is usually accompanied by decrease in limb motor function and change in muscle metabolism patterns. However, few studies have investigated the aging effect on muscle hemodynamics of the upper extremity. This study aims to explore the aging effect on muscle metabolism patterns during upper limb's exercise. Twelve middle-aged and elderly subjects and 12 young subjects were recruited, and muscle oxygenation signals from these subjects' biceps brachii muscles were collected during active and passive upper limb's encircling exercise with near-infrared spectroscopy (NIRS). The old group showed stronger muscle hemodynamic metabolism than the young group. The multiscale fuzzy approximate entropy and multiscale transfer entropy analyses indicated higher complexity and stronger interlimb coupling of the muscle oxygenation signals for the old group. Based on the selected muscle metabolism features, the constructed support vector machine model showed a high accuracy rate for classifying the two groups of subjects: 91.6% for the passive mode and 87.5% for the active mode. Our results proved the specific muscle metabolism patterns in the upper limb's exercise for old subjects, promoting the understanding of the aging effect on muscle hemodynamics.
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Affiliation(s)
- Hucheng Chen
- School of Mechatronic Engineering and Automation, Foshan University, Foshan, China
- Equal contribution
| | - Jianbin Liang
- School of Mechatronic Engineering and Automation, Foshan University, Foshan, China
- Equal contribution
| | - Wenzhu Huang
- Fifth Affiliated Hospital of Foshan University, Foshan, China
| | - Anping Yang
- School of Medicine, Foshan University, Foshan, China
| | - Richong Pang
- School of Mechatronic Engineering and Automation, Foshan University, Foshan, China
| | - Chaochao Zhao
- School of Medicine, Foshan University, Foshan, China
| | - Kai Wu
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, China
| | - Chong Wang
- School of Mechatronic Engineering and Automation, Foshan University, Foshan, China
| | - Kecheng Yan
- School of Mechatronic Engineering and Automation, Foshan University, Foshan, China
| | - YiZheng Zhang
- School of Mechatronic Engineering and Automation, Foshan University, Foshan, China
| | - Shuoshu Lin
- School of Mechatronic Engineering and Automation, Foshan University, Foshan, China
| | - Yuanrong Xie
- School of Mechatronic Engineering and Automation, Foshan University, Foshan, China
| | - Yuxiang Wu
- Department of Health and Physical Education, Jianghan University, Wuhan, China
| | - Jinyan Sun
- School of Medicine, Foshan University, Foshan, China
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Desanlis J, Gordon D, Calveyrac C, Cottin F, Gernigon M. Intra- and Inter-Day Reliability of the NIRS Portamon Device after Three Induced Muscle Ischemias. SENSORS (BASEL, SWITZERLAND) 2022; 22:5165. [PMID: 35890846 PMCID: PMC9317239 DOI: 10.3390/s22145165] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
(1) Background: Near-infrared spectroscopy (NIRS) is an innovative and non-invasive technology used to investigate muscular oxygenation. The aim of this study is to assess the within- and between-session reliability of the NIRS Portamon (Artinis, Elst, Netherlands) device following three sets of induced muscle ischemia. (2) Methods: Depending on the experimental group (G1, G2 or G3), a cuff was inflated three times on the left upper arm to 50 mmHg (G1), systolic blood pressure (SBP) + 50 mmHg (G2) or 250 mmHg (G3). Maximum, minimum and reoxygenation rate values were assessed after each occlusion phase, using a Portamon device placed on the left brachioradialis. Reliability was assessed with intraclass correlation coefficient (ICC) value and ICC 95% confidence interval (CI-95%), coefficient of variation (CV) and standard error of measurement (SEM) (3) Results: Our results showed a good to excellent reliability for maximums and minimums within-session. However, the reoxygenation rate within sessions as well as measurements between sessions cannot predominantly show good reliability. (4) Conclusions: Multiple measurements of maximums and minimums within a single session appeared to be reliable which shows that only one measurement is necessary to assess these parameters. However, it is necessary to be cautious with a comparison of maximum, minimum and reoxygenation rate values between sessions.
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Affiliation(s)
- Julien Desanlis
- CIAMS, Université Paris-Saclay, CEDEX, 91405 Orsay, France; (C.C.); (F.C.); (M.G.)
- CIAMS, Université d’Orléans, 45067 Orléans, France
- Anglia Ruskin University, Cambridge CB1 1PT, UK;
| | - Dan Gordon
- Anglia Ruskin University, Cambridge CB1 1PT, UK;
| | - Camille Calveyrac
- CIAMS, Université Paris-Saclay, CEDEX, 91405 Orsay, France; (C.C.); (F.C.); (M.G.)
- CIAMS, Université d’Orléans, 45067 Orléans, France
| | - François Cottin
- CIAMS, Université Paris-Saclay, CEDEX, 91405 Orsay, France; (C.C.); (F.C.); (M.G.)
- CIAMS, Université d’Orléans, 45067 Orléans, France
| | - Marie Gernigon
- CIAMS, Université Paris-Saclay, CEDEX, 91405 Orsay, France; (C.C.); (F.C.); (M.G.)
- CIAMS, Université d’Orléans, 45067 Orléans, France
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Hu M, Shealy T. Priming Engineers to Think About Sustainability: Cognitive and Neuro-Cognitive Evidence to Support the Adoption of Green Stormwater Design. Front Neurosci 2022; 16:896347. [PMID: 35645724 PMCID: PMC9130648 DOI: 10.3389/fnins.2022.896347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 04/22/2022] [Indexed: 11/13/2022] Open
Abstract
Green infrastructure is the application of nature-based solutions like bioswales, rain gardens, and permeable pavements to reduce flooding in urban areas. These systems are underutilized in the design of the built environment. A barrier to their implementation is that design engineers tend to discount the tangential benefits of these greener systems and overweigh the associated risks. This study tested whether priming engineers to think about the environmental and social sustainability benefits of green infrastructure can influence what attributes engineers consider and how they weigh these attributes during the design decision-making process. Forty engineering students trained in stormwater design were asked to evaluate the implementation of a conventional stormwater design option and a green stormwater design option. Their preferred design option was recorded and the changes in their neuro-cognition were measured using functional near infrared-spectroscopy. Half of the engineers were asked to first consider the potential outcomes of these options on the environment and the surrounding community. Priming engineers to first consider environmental and social sustainability before considering the cost and risk of each option, significantly increased the perceived benefits the engineers believed green infrastructure could provide. The priming intervention also increased the likelihood that engineers would recommend the green infrastructure option. The engineers primed to think about environmental and social sustainability exhibited significantly lower oxy-hemoglobin in their ventrolateral, dorsolateral, and medial prefrontal cortex through multiple phases of the judgment and decision-making process. The intervention appears to increase cognitive representativeness or salience of the benefits for green infrastructure when engineers evaluate design alternatives. This relatively low-cost intervention, asking engineers to consider environmental and social sustainability for each design alternative, can shift engineering decision-making and change neuro-cognition.
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Affiliation(s)
- Mo Hu
- Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, United States
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Comparison of Different Approaches Estimating Skeletal Muscle Oxygen Consumption Using Continuous-Wave Near-Infrared Spectroscopy at a Submaximal Contraction Level—A Comparative Study. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12052272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Continuous-wave near-infrared spectroscopy (CW-NIRS) is a method used to non-invasively estimate skeletal muscle oxygen consumption (mVO2). Three different signals are provided by CW-NIRS devices: (1) oxygenated hemoglobin (O2Hb); (2) deoxygenated hemoglobin (HHb); and (3) tissue saturation index (TSI). Typically, the signal’s slope is interpreted with respect to high or low mVO2 during a muscle action. What signal (or combination of signals) is used for slope interpretation differs according to what approach is used, and there are several published in literature. It is unclear if resulting mVO2 estimates can be used interchangeably. Hence, this work aimed to compare five commonly used approaches on the same set of CW-NIRS data regarding their agreement in estimated mVO2. A controlled, lab-based study setting was used for this experiment. Data are based on isometric dorsiflexion contractions of 15 subjects at 30% of voluntary maximum torque, at two different ankle angles. CW-NIRS was placed on the m. tibialis anterior and blood flow was occluded. The approaches for mVO2 estimation included calculations based on (1) TSI, (2) the difference between O2Hb and HHb (Hbdiff), (3) the mean of slopes from O2Hb and HHb (Hbmean), (4) the HHb signal, and (5) the O2Hb signal. Linear regression modelling was used to calculate respective slopes (r2 > 0.99). Repeated measures ANOVA identified significant differences between the approaches (p < 0.001, ω2 = 0.258). Post-hoc tests revealed that only TSI vs. Hbmean and Hbdiff vs. HHb gave comparable results (p > 0.271). In addition, Bland–Altman plots showed good accuracy (mean bias ~2%) but low precision (±20%) between the comparisons. Thus, the different approaches to estimate mVO2 cannot be used interchangeably. The results from different studies using different approaches should be compared with caution.
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Merrigan JJ, Jones MT, Padecky J, Malecek J, Omcirk D, Scott BR, Tufano JJ. Impact of Rest-Redistribution on Fatigue During Maximal Eccentric Knee Extensions. J Hum Kinet 2020; 74:205-214. [PMID: 33312288 PMCID: PMC7706641 DOI: 10.2478/hukin-2020-0028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Redistributing long inter-set rest intervals into shorter but more frequent rest intervals generally maintains concentric performance, possibly due to improved energy store maintenance. However, eccentric actions require less energy than concentric actions, meaning that shorter but more frequent sets may not affect eccentric actions to the same degree as concentric actions. Considering the increased popularity of eccentric exercise, the current study evaluated the effects of redistributing long inter-set rest periods into shorter but more frequent rest periods during eccentric only knee extensions. Eleven resistance-trained men performed 40 isokinetic unilateral knee extensions at 60°·s-1 with 285 s of total rest using traditional sets (TS; 4 sets of 10 with 95 s inter-set rest) and rest-redistribution (RR; 20 sets of 2 with 15 s inter-set rest). Before and during exercise, muscle oxygenation was measured via near-infrared spectroscopy, and rating of perceived exertion (RPE) was recorded after every 10th repetition. There were no differences between protocols for peak torque (RR, 241.58±47.20 N; TS, 231.64±48.87 N; p=0.396) or total work (RR, 215.26±41.47 J; TS, 209.71±36.02 J; p=0.601), but moderate to large effect sizes existed in later repetitions (6,8,10) with greater peak torque during RR (d=0.66-1.19). For the entire session, RR had moderate effects on RPE (RR, 5.73±1.42; TS, 6.09±1.30; p=0.307; d=0.53) and large effects on oxygen saturation (RR, 5857.4±310.0; TS, 6495.8±273.8; p=0.002, d=2.13). Therefore, RR may maintain peak torque or total work during eccentric exercise, improve oxygen utilization at the muscle, and reduce the perceived effort.
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Affiliation(s)
- Justin J. Merrigan
- Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
- School of Kinesiology, George Mason University, Manassas, VA, USA
| | | | - Jan Padecky
- Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
| | - Jan Malecek
- Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
| | - Dan Omcirk
- Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
| | - Brendan R. Scott
- Department of Exercise Science, College of Science, Health, Engineering and Education, Murdoch University, Murdoch, Australia
- Murdoch Applied Sports Science Laboratory, Murdoch University, Murdoch, Australia
| | - James J. Tufano
- Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
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More Impaired Dynamic Ventilatory Muscle Oxygenation in Congestive Heart Failure than in Chronic Obstructive Pulmonary Disease. J Clin Med 2019; 8:jcm8101641. [PMID: 31591369 PMCID: PMC6832638 DOI: 10.3390/jcm8101641] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 09/30/2019] [Accepted: 10/02/2019] [Indexed: 12/25/2022] Open
Abstract
Patients with chronic obstructive pulmonary disease (COPD) and congestive heart failure (CHF) often have dyspnea. Despite differences in primary organ derangement and similarities in secondary skeletal muscle changes, both patient groups have prominent functional impairment. With similar daily exercise performance in patients with CHF and COPD, we hypothesized that patients with CHF would have worse ventilatory muscle oxygenation than patients with COPD. This study aimed to compare differences in tissue oxygenation and blood capacity between ventilatory muscles and leg muscles and between the two patient groups. Demographic data, lung function, and maximal cardiopulmonary exercise tests were performed in 134 subjects without acute illnesses. Muscle oxygenation and blood capacity were measured using frequency-domain near-infrared spectroscopy (fd-NIRS). We enrolled normal subjects and patients with COPD and CHF. The two patient groups were matched by oxygen-cost diagram scores, New York Heart Association functional classification scores, and modified Medical Research Council scores. COPD was defined as forced expired volume in one second and forced expired vital capacity ratio ≤0.7. CHF was defined as stable heart failure with an ejection fraction ≤49%. The healthy subjects were defined as those with no obvious history of chronic disease. Age, body mass index, cigarette consumption, lung function, and exercise capacity were different across the three groups. Muscle oxygenation and blood capacity were adjusted accordingly. Leg muscles had higher deoxygenation (HHb) and oxygenation (HbO2) and lower oxygen saturation (SmO2) than ventilatory muscles in all participants. The SmO2 of leg muscles was lower than that of ventilatory muscles because SmO2 was calculated as HbO2/(HHb+HbO2), and the HHb of leg muscles was relatively higher than the HbO2 of leg muscles. The healthy subjects had higher SmO2, the patients with COPD had higher HHb, and the patients with CHF had lower HbO2 in both muscle groups throughout the tests. The patients with CHF had lower SmO2 of ventilatory muscles than the patients with COPD at peak exercise (p < 0.01). We conclud that fd-NIRS can be used to discriminate tissue oxygenation of different musculatures and disease entities. More studies on interventions on ventilatory muscle oxygenation in patients with CHF and COPD are warranted.
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Tufano JJ, Omcirk D, Malecek J, Pisz A, Halaj M, Scott BR. Traditional sets versus rest-redistribution: a laboratory-controlled study of a specific cluster set configuration at fast and slow velocities. Appl Physiol Nutr Metab 2019; 45:421-430. [PMID: 31553890 DOI: 10.1139/apnm-2019-0584] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study investigated redistributing long inter-set rest intervals into shorter but more frequent intervals at 2 different concentric velocities. Resistance-trained men performed 4 randomised isokinetic unilateral knee extension protocols, 2 at 60°·s-1 and 2 at 360°·s-1. At each speed, subjects performed 40 repetitions with 285 s of rest using traditional sets (TS; 4 sets of 10 with 95 s of inter-set rest) and rest-redistribution (RR; 20 sets of 2 with 15 s inter-set rest). Before and at 2, 5, and 10 min after exercise, tensiomyography (TMG) and oxygenation (near-infrared spectroscopy; NIRS) were measured. NIRS was also measured during exercise, and rating of perceived exertion (RPE) was recorded after every 10 repetitions. At both speeds, RR displayed greater peak torque, total work, and power output during latter repetitions, but there were no differences between TS or RR when averaging all 40 repetitions. The RPE was less during RR at both speeds (p < 0.05). RR increased select muscle oxygen saturation and blood flow at both speeds. There were no effects of protocol on TMG, but effect sizes favoured a quicker recovery after RR. RR was likely beneficial in maintaining performance compared with the latter parts of TS sets and limiting perceived and peripheral fatigue. Novelty Although effective at slow velocities, rest-redistribution was likely more effective during high-velocity movements in this study. Rest-redistribution maintained the ability to produce force throughout an entire range of motion. Rest-redistribution reduced RPE during both high-velocity and high-force movements.
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Affiliation(s)
- James J Tufano
- Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, Charles University, 16252 Prague, Czech Republic
| | - Dan Omcirk
- Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, Charles University, 16252 Prague, Czech Republic
| | - Jan Malecek
- Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, Charles University, 16252 Prague, Czech Republic
| | - Anna Pisz
- Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, Charles University, 16252 Prague, Czech Republic
| | - Matej Halaj
- Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, Charles University, 16252 Prague, Czech Republic.,Department of Track and Field, Faculty of Physical Education and Sport, Comenius University in Bratislava, 814 99 Bratislava, Slovakia
| | - Brendan R Scott
- College of Science, Health, Engineering and Education, Discipline of Exercise Science, Murdoch University, Murdoch 6150, Australia.,Murdoch Applied Sports Science Laboratory, Murdoch University, Murdoch 6150, Australia
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