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Tamura Y, Jee E, Kouzaki K, Kotani T, Nakazato K. Monocarboxylate transporter 4 deficiency enhances high-intensity interval training-induced metabolic adaptations in skeletal muscle. J Physiol 2024; 602:1313-1340. [PMID: 38513062 DOI: 10.1113/jp285719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 02/29/2024] [Indexed: 03/23/2024] Open
Abstract
High-intensity exercise stimulates glycolysis, subsequently leading to elevated lactate production within skeletal muscle. While lactate produced within the muscle is predominantly released into the circulation via the monocarboxylate transporter 4 (MCT4), recent research underscores lactate's function as an intercellular and intertissue signalling molecule. However, its specific intracellular roles within muscle cells remains less defined. In this study, our objective was to elucidate the effects of increased intramuscular lactate accumulation on skeletal muscle adaptation to training. To achieve this, we developed MCT4 knockout mice and confirmed that a lack of MCT4 indeed results in pronounced lactate accumulation in skeletal muscle during high-intensity exercise. A key finding was the significant enhancement in endurance exercise capacity at high intensities when MCT4 deficiency was paired with high-intensity interval training (HIIT). Furthermore, metabolic adaptations supportive of this enhanced exercise capacity were evident with the combination of MCT4 deficiency and HIIT. Specifically, we observed a substantial uptick in the activity of glycolytic enzymes, notably hexokinase, glycogen phosphorylase and pyruvate kinase. The mitochondria also exhibited heightened pyruvate oxidation capabilities, as evidenced by an increase in oxygen consumption when pyruvate served as the substrate. This mitochondrial adaptation was further substantiated by elevated pyruvate dehydrogenase activity, increased activity of isocitrate dehydrogenase - the rate-limiting enzyme in the TCA cycle - and enhanced function of cytochrome c oxidase, pivotal to the electron transport chain. Our findings provide new insights into the physiological consequences of lactate accumulation in skeletal muscle during high-intensity exercises, deepening our grasp of the molecular intricacies underpinning exercise adaptation. KEY POINTS: We pioneered a unique line of monocarboxylate transporter 4 (MCT4) knockout mice specifically tailored to the ICR strain, an optimal background for high-intensity exercise studies. A deficiency in MCT4 exacerbates the accumulation of lactate in skeletal muscle during high-intensity exercise. Pairing MCT4 deficiency with high-intensity interval training (HIIT) results in a synergistic boost in high-intensity exercise capacity, observable both at the organismal level (via a treadmill running test) and at the muscle tissue level (through an ex vivo muscle contractile function test). Coordinating MCT4 deficiency with HIIT enhances both the glycolytic enzyme activities and mitochondrial capacity to oxidize pyruvate.
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Affiliation(s)
- Yuki Tamura
- Faculty of Sport Science, Nippon Sport Science University, Tokyo, Japan
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
- Research Institute for Sport Science, Nippon Sport Science University, Tokyo, Japan
- Sport Training Center, Nippon Sport Science University, Tokyo, Japan
- High Performance Center, Nippon Sport Science University, Tokyo, Japan
- Center for Coaching Excellence, Nippon Sport Science University, Tokyo, Japan
| | - Eunbin Jee
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Karina Kouzaki
- Research Institute for Sport Science, Nippon Sport Science University, Tokyo, Japan
- Faculty of Medical Science, Nippon Sport Science University, Tokyo, Japan
- Graduate School of Medical and Health Science, Nippon Sport Science University, Tokyo, Japan
| | - Takaya Kotani
- Research Institute for Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Koichi Nakazato
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
- Research Institute for Sport Science, Nippon Sport Science University, Tokyo, Japan
- Faculty of Medical Science, Nippon Sport Science University, Tokyo, Japan
- Graduate School of Medical and Health Science, Nippon Sport Science University, Tokyo, Japan
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2
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Aveseh M, Koushkie-Jahromi M, Nemati J, Esmaeili-Mahani S, Hosseini NS. Lactate entrance into the brain facilities adipose tissue lipolysis during exercise via circulating calcitonin gene-related peptide. Arch Physiol Biochem 2023:1-10. [PMID: 37982717 DOI: 10.1080/13813455.2023.2283684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 11/09/2023] [Indexed: 11/21/2023]
Abstract
Objectives: We assessed the relationships between CGRP, lactate and fat regulation.Methods: We evaluated the effect of intracerebroventricular (i.c.v.) injection of lactate and acute exercise on brain CGRP expression, and its concentration in serum/cerebrospinal fluid (SCF) in rats.Results: Injection of lactate up-regulated CGRP expression in the cortex and CSF and activated p38-mitogen-activated protein kinases (p38-MAPK) pathway. Co-injection of lactate and sb203580, deterred lactate-induced up-regulation of CGRP in the brain and CSF. Exercise increased the CGRP expression in the brain and CSF and up-regulated fat metabolism. Inhibition of lactate entrance into the brain using alpha-cyano-4-hydroxycinnamate (4-CIN) diminished exercise-induced CGRP up-regulation in the brain and CSF. Reducing the circulating blood lactate by pre-treatment of the animals with dichloroacetate (DCA) had no effect on exercise-induced increase in CGRP expression or fat metabolism during exercise.Conclusions: lactate probably acts as one of a signalling molecule in the brain to regulate fat metabolism during exercise.
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Affiliation(s)
- Malihe Aveseh
- Sport Sciences Department, Shiraz University, Shiraz, Iran
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Javad Nemati
- Sport Sciences Department, Shiraz University, Shiraz, Iran
| | - Saeed Esmaeili-Mahani
- Department of Biology, Faculty of Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Najmeh Sadat Hosseini
- Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
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3
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Jacob N, So I, Sharma B, Marzolini S, Tartaglia MC, Oh P, Green R. Effects of High-Intensity Interval Training Protocols on Blood Lactate Levels and Cognition in Healthy Adults: Systematic Review and Meta-Regression. Sports Med 2023; 53:977-991. [PMID: 36917435 DOI: 10.1007/s40279-023-01815-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2023] [Indexed: 03/16/2023]
Abstract
BACKGROUND Some health benefits from high-intensity interval training (HIIT) are facilitated by peripheral blood lactate levels. However, the lactate response from HIIT is variable and dependent on protocol parameters. OBJECTIVES We aimed to determine the HIIT protocol parameters that elicited peak lactate levels, and how these levels are associated with post-HIIT cognitive performance. STUDY DESIGN We conducted a systematic review with meta-regression. METHODS MEDLINE, Embase, CENTRAL, SPORTDiscus, and CINAHL + were searched from database inception to 8 April, 2022. Peer-reviewed primary research in healthy adults that determined lactate (mmol/L) and cognitive performance after one HIIT session was included. Mixed-effects meta-regressions determined the protocol parameters that elicited peak lactate levels, and linear regressions modelled the relationship between lactate levels and cognitive performance. RESULTS Study entries (n = 226) involving 2560 participants (mean age 24.1 ± 4.7 years) were included in the meta-regression. A low total work-interval volume (~ 5 min), recovery intervals that are about five times longer than work intervals, and a medium session volume (~ 15 min), elicited peak lactate levels, even when controlling for intensity, fitness (peak oxygen consumption) and blood measurement methods. Lactate levels immediately post-HIIT explained 14-17% of variance in Stroop interference condition at 30 min post-HIIT. CONCLUSIONS A HIIT protocol that uses the above parameters (e.g., 8 × 30-s maximal intensity with 90-s recovery) can elicit peak lactate, a molecule that is known to benefit the central nervous system and be involved in exercise training adaptations. This review reports the state of the science in regard to the lactate response following HIIT, which is relevant to those in the sports medicine field designing HIIT training programs. TRIAL REGISTRY Clinical Trial Registration: PROSPERO (CRD42020204400).
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Affiliation(s)
- Nithin Jacob
- KITE Research Institute, Toronto Rehabilitation Institute-University Health Network, 550 University Ave, Toronto, ON, M5G 2A2, Canada.,Rehabilitation Sciences Institute, University of Toronto, Toronto, ON, Canada.,University Health Network, Toronto, ON, Canada
| | - Isis So
- KITE Research Institute, Toronto Rehabilitation Institute-University Health Network, 550 University Ave, Toronto, ON, M5G 2A2, Canada
| | - Bhanu Sharma
- Department of Medical Sciences, McMaster University, Hamilton, ON, Canada
| | - Susan Marzolini
- KITE Research Institute, Toronto Rehabilitation Institute-University Health Network, 550 University Ave, Toronto, ON, M5G 2A2, Canada.,University Health Network, Toronto, ON, Canada
| | - Maria Carmela Tartaglia
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Kembril Research Institute, Toronto Western-University Health Network, Toronto, ON, Canada
| | - Paul Oh
- KITE Research Institute, Toronto Rehabilitation Institute-University Health Network, 550 University Ave, Toronto, ON, M5G 2A2, Canada.,University Health Network, Toronto, ON, Canada
| | - Robin Green
- KITE Research Institute, Toronto Rehabilitation Institute-University Health Network, 550 University Ave, Toronto, ON, M5G 2A2, Canada. .,Rehabilitation Sciences Institute, University of Toronto, Toronto, ON, Canada. .,University Health Network, Toronto, ON, Canada.
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4
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Brooks GA, Osmond AD, Arevalo JA, Duong JJ, Curl CC, Moreno-Santillan DD, Leija RG. Lactate as a myokine and exerkine: drivers and signals of physiology and metabolism. J Appl Physiol (1985) 2023; 134:529-548. [PMID: 36633863 PMCID: PMC9970662 DOI: 10.1152/japplphysiol.00497.2022] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
No longer viewed as a metabolic waste product and cause of muscle fatigue, a contemporary view incorporates the roles of lactate in metabolism, sensing and signaling in normal as well as pathophysiological conditions. Lactate exists in millimolar concentrations in muscle, blood, and other tissues and can rise more than an order of magnitude as the result of increased production and clearance limitations. Lactate exerts its powerful driver-like influence by mass action, redox change, allosteric binding, and other mechanisms described in this article. Depending on the condition, such as during rest and exercise, following carbohydrate nutrition, injury, or pathology, lactate can serve as a myokine or exerkine with autocrine-, paracrine-, and endocrine-like functions that have important basic and translational implications. For instance, lactate signaling is: involved in reproductive biology, fueling the heart, muscle adaptation, and brain executive function, growth and development, and a treatment for inflammatory conditions. Lactate also works with many other mechanisms and factors in controlling cardiac output and pulmonary ventilation during exercise. Ironically, lactate can be disruptive of normal processes such as insulin secretion when insertion of lactate transporters into pancreatic β-cell membranes is not suppressed, and in carcinogenesis when factors that suppress carcinogenesis are inhibited, whereas factors that promote carcinogenesis are upregulated. Lactate signaling is important in areas of intermediary metabolism, redox biology, mitochondrial biogenesis, neurobiology, gut physiology, appetite regulation, nutrition, and overall health and vigor. The various roles of lactate as a myokine and exerkine are reviewed.NEW & NOTEWORTHY Lactate sensing and signaling is a relatively new and rapidly changing field. As a physiological signal lactate works both independently and in concert with other signals. Lactate operates via covalent binding and canonical signaling, redox change, and lactylation of DNA. Lactate can also serve as an element of feedback loops in cardiopulmonary regulation. From conception through aging lactate is not the only a myokine or exerkine, but it certainly deserves consideration as a physiological signal.
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Affiliation(s)
- George A Brooks
- Exercise Physiology Laboratory, Department of Integrative Biology, University of California, Berkeley, California, United States
| | - Adam D Osmond
- Exercise Physiology Laboratory, Department of Integrative Biology, University of California, Berkeley, California, United States
| | - Jose A Arevalo
- Exercise Physiology Laboratory, Department of Integrative Biology, University of California, Berkeley, California, United States
| | - Justin J Duong
- Exercise Physiology Laboratory, Department of Integrative Biology, University of California, Berkeley, California, United States
| | - Casey C Curl
- Exercise Physiology Laboratory, Department of Integrative Biology, University of California, Berkeley, California, United States
| | - Diana D Moreno-Santillan
- Exercise Physiology Laboratory, Department of Integrative Biology, University of California, Berkeley, California, United States
| | - Robert G Leija
- Exercise Physiology Laboratory, Department of Integrative Biology, University of California, Berkeley, California, United States
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5
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Thomas C, Delfour‐Peyrethon R, Lambert K, Granata C, Hobbs T, Hanon C, Bishop DJ. The effect of pre-exercise alkalosis on lactate/pH regulation and mitochondrial respiration following sprint-interval exercise in humans. Front Physiol 2023; 14:1073407. [PMID: 36776968 PMCID: PMC9911540 DOI: 10.3389/fphys.2023.1073407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/11/2023] [Indexed: 01/28/2023] Open
Abstract
Purpose: The purpose of this study was to evaluate the effect of pre-exercise alkalosis, induced via ingestion of sodium bicarbonate, on changes to lactate/pH regulatory proteins and mitochondrial function induced by a sprint-interval exercise session in humans. Methods: On two occasions separated by 1 week, eight active men performed a 3 × 30-s all-out cycling test, interspersed with 20 min of recovery, following either placebo (PLA) or sodium bicarbonate (BIC) ingestion. Results: Blood bicarbonate and pH were elevated at all time points after ingestion in BIC vs PLA (p < 0.05). The protein content of monocarboxylate transporter 1 (MCT1) and basigin (CD147), at 6 h and 24 h post-exercise, and sodium/hydrogen exchanger 1 (NHE1) 24 h post-exercise, were significantly greater in BIC compared to PLA (p < 0.05), whereas monocarboxylate transporter 4 (MCT4), sodium/bicarbonate cotransporter (NBC), and carbonic anhydrase isoform II (CAII) content was unchanged. These increases in protein content in BIC vs. PLA after acute sprint-interval exercise may be associated with altered physiological responses to exercise, such as the higher blood pH and bicarbonate concentration values, and lower exercise-induced oxidative stress observed during recovery (p < 0.05). Additionally, mitochondrial respiration decreased after 24 h of recovery in the BIC condition only, with no changes in oxidative protein content in either condition. Conclusion: These data demonstrate that metabolic alkalosis induces post-exercise increases in several lactate/pH regulatory proteins, and reveal an unexpected role for acidosis in mitigating the loss of mitochondrial respiration caused by exercise in the short term.
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Affiliation(s)
- Claire Thomas
- LBEPS, Univ Evry, IRBA, University Paris Saclay, Evry, France,French Institute of Sport (INSEP), Research Department, Laboratory Sport, Expertise, and Performance, Paris, France,*Correspondence: Claire Thomas,
| | - Rémi Delfour‐Peyrethon
- French Institute of Sport (INSEP), Research Department, Laboratory Sport, Expertise, and Performance, Paris, France,Institute for Health and Sport (iHeS), Victoria University, Melbourne, VIC, Australia
| | - Karen Lambert
- PhyMedExp, University of Montpellier, INSERM U1046, CNRS UMR 9214, Montpellier, France
| | - Cesare Granata
- French Institute of Sport (INSEP), Research Department, Laboratory Sport, Expertise, and Performance, Paris, France,Department of Diabetes, Central Clinical School, Monash University, Melbourne, VIC, Australia,Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany,German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Thomas Hobbs
- LBEPS, Univ Evry, IRBA, University Paris Saclay, Evry, France
| | - Christine Hanon
- French Institute of Sport (INSEP), Research Department, Laboratory Sport, Expertise, and Performance, Paris, France,French Athletics Federation, Paris, France
| | - David J. Bishop
- Institute for Health and Sport (iHeS), Victoria University, Melbourne, VIC, Australia
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6
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Shirai T, Kitaoka Y, Uemichi K, Tokinoya K, Takeda K, Takemasa T. Effects of lactate administration on hypertrophy and mTOR signaling activation in mouse skeletal muscle. Physiol Rep 2022; 10:e15436. [PMID: 35993446 PMCID: PMC9393907 DOI: 10.14814/phy2.15436] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/01/2022] [Accepted: 05/16/2022] [Indexed: 04/12/2023] Open
Abstract
Lactate is a metabolic product of glycolysis and has recently been shown to act as a signaling molecule that induces adaptations in oxidative metabolism. In this study, we investigated whether lactate administration enhanced muscle hypertrophy and protein synthesis responses during resistance exercise in animal models. We used male ICR mice (7-8 weeks old) were used for chronic (mechanical overload induced by synergist ablation: [OL]) and acute (high-intensity muscle contraction by electrical stimulation: [ES]) resistance exercise models. The animals were intraperitoneally administrated a single dose of sodium lactate (1 g/kg of body weight) in the ES study, and once a day for 14 consecutive days in the OL study. Two weeks of mechanical overload increased plantaris muscle wet weight (main effect of OL: p < 0.05) and fiber cross-sectional area (main effect of OL: p < 0.05), but those were not affected by lactate administration. Following the acute resistance exercise by ES, protein synthesis and phosphorylation of p70 S6 kinase and ribosomal protein S6, which are downstream molecules in the anabolic signaling cascade, were increased (main effect of ES: p < 0.05), but lactate administration had no effect. This study demonstrated that exogenous lactate administration has little effect on the muscle hypertrophic response during resistance exercise using acute ES and chronic OL models. Our results do not support the hypothesis that elevated blood lactate concentration induces protein synthesis responses in skeletal muscle.
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Affiliation(s)
- Takanaga Shirai
- Faculty of Health and Sport SciencesUniversity of TsukubaTsukubaIbarakiJapan
- Research Fellow of Japan Society for Promotion ScienceChiyoda‐kuTokyoJapan
| | - Yu Kitaoka
- Department of Human SciencesKanagawa UniversityYokohama‐shiKanagawaJapan
| | - Kazuki Uemichi
- Graduate School of Comprehensive Human SciencesUniversity of TsukubaTsukubaIbarakiJapan
| | - Katsuyuki Tokinoya
- Research Fellow of Japan Society for Promotion ScienceChiyoda‐kuTokyoJapan
- Division of Clinical Medicine, Faculty of MedicineUniversity of TsukubaTsukubaIbarakiJapan
- Department of Health Promotion SciencesGraduate School of Human Health SciencesTokyo Metropolitan UniversityHachiojiTokyoJapan
| | - Kohei Takeda
- School of Political Science and EconomicsMeiji UniversitySuginami‐kuTokyoJapan
| | - Tohru Takemasa
- Faculty of Health and Sport SciencesUniversity of TsukubaTsukubaIbarakiJapan
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7
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Takeda R, Nonaka Y, Kakinoki K, Miura S, Kano Y, Hoshino D. Effect of endurance training and PGC-1α overexpression on calculated lactate production volume during exercise based on blood lactate concentration. Sci Rep 2022; 12:1635. [PMID: 35102189 PMCID: PMC8803982 DOI: 10.1038/s41598-022-05593-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 01/14/2022] [Indexed: 11/29/2022] Open
Abstract
Lactate production is an important clue for understanding metabolic and signal responses to exercise but its measurement is difficult. Therefore, this study aimed (1) to develop a method of calculating lactate production volume during exercise based on blood lactate concentration and compare the effects between endurance exercise training (EX) and PGC-1α overexpression (OE), (2) to elucidate which proteins and enzymes contribute to changes in lactate production due to EX and muscle PGC-1α OE, and (3) to elucidate the relationship between lactate production volume and signaling phosphorylations involved in mitochondrial biogenesis. EX and PGC-1α OE decreased muscle lactate production volume at the absolute same-intensity exercise, but only PGC-1α OE increased lactate production volume at the relative same-intensity exercise. Multiple linear regression revealed that phosphofructokinase, monocarboxylate transporter (MCT)1, MCT4, and citrate synthase equally contribute to the lactate production volume at high-intensity exercise within physiological adaptations, such as EX, not PGC-1α OE. We found that an exercise intensity-dependent increase in the lactate production volume was associated with a decrease in glycogen concentration and an increase in P-AMPK/T-AMPK. This suggested that the calculated lactate production volume was appropriate and reflected metabolic and signal responses but further modifications are needed for the translation to humans.
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Affiliation(s)
- Reo Takeda
- Bioscience and Technology Program, Department of Engineering Science, The University of Electro-Communications, 1-5-1 Chofugaoka, Tokyo, 182-8585, Chofu, Japan
| | - Yudai Nonaka
- Bioscience and Technology Program, Department of Engineering Science, The University of Electro-Communications, 1-5-1 Chofugaoka, Tokyo, 182-8585, Chofu, Japan
- Institute of Liberal Arts and Science, Kanazawa University, Ishikawa, Japan
| | | | - Shinji Miura
- Laboratory of Nutritional Biochemistry, Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka, Japan
| | - Yutaka Kano
- Bioscience and Technology Program, Department of Engineering Science, The University of Electro-Communications, 1-5-1 Chofugaoka, Tokyo, 182-8585, Chofu, Japan
| | - Daisuke Hoshino
- Bioscience and Technology Program, Department of Engineering Science, The University of Electro-Communications, 1-5-1 Chofugaoka, Tokyo, 182-8585, Chofu, Japan.
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8
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Mang ZA, Ducharme JB, Mermier C, Kravitz L, de Castro Magalhaes F, Amorim F. Aerobic Adaptations to Resistance Training: The Role of Time under Tension. Int J Sports Med 2022; 43:829-839. [PMID: 35088396 DOI: 10.1055/a-1664-8701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Generally, skeletal muscle adaptations to exercise are perceived through a dichotomous lens where the metabolic stress imposed by aerobic training leads to increased mitochondrial adaptations while the mechanical tension from resistance training leads to myofibrillar adaptations. However, there is emerging evidence for cross over between modalities where aerobic training stimulates traditional adaptations to resistance training (e.g., hypertrophy) and resistance training stimulates traditional adaptations to aerobic training (e.g., mitochondrial biogenesis). The latter is the focus of the current review in which we propose high-volume resistance training (i.e., high time under tension) leads to aerobic adaptations such as angiogenesis, mitochondrial biogenesis, and increased oxidative capacity. As time under tension increases, skeletal muscle energy turnover, metabolic stress, and ischemia also increase, which act as signals to activate the peroxisome proliferator-activated receptor gamma coactivator 1-alpha, which is the master regulator of mitochondrial biogenesis. For practical application, the acute stress and chronic adaptations to three specific forms of high-time under tension are also discussed: Slow-tempo, low-intensity resistance training, and drop-set resistance training. These modalities of high-time under tension lead to hallmark adaptations to resistance training such as muscle endurance, hypertrophy, and strength, but little is known about their effect on traditional aerobic training adaptations.
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Affiliation(s)
- Zachary Aaron Mang
- Health, Exercise, and Sports Science, University of New Mexico, Albuquerque, United States
| | - Jeremy B Ducharme
- Health, Exercise, and Sports Science, University of New Mexico - Albuquerque, Albuquerque, United States
| | - Christine Mermier
- Health, Exercise, and Sports Science, University of New Mexico, Albuquerque, United States
| | - Len Kravitz
- Health, Exercise, and Sports Science, University of New Mexico, Albuquerque, United States
| | - Flavio de Castro Magalhaes
- Department of Physical Education, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Brazil
| | - Fabiano Amorim
- Health, Exercise, and Sports Science, University of New Mexico, Albuquerque, United States
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9
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Shirai T, Uemichi K, Hidaka Y, Kitaoka Y, Takemasa T. Effect of lactate administration on mouse skeletal muscle under calorie restriction. Curr Res Physiol 2021; 4:202-208. [PMID: 34746839 PMCID: PMC8562144 DOI: 10.1016/j.crphys.2021.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 08/25/2021] [Accepted: 09/03/2021] [Indexed: 12/18/2022] Open
Abstract
Calorie restriction (CR) involves a reductions of calorie intake without altering the nutritional balance, and has many beneficial effects, such as improving oxidative metabolism and extending lifespan. However, CR decreases in skeletal muscle mass and fat mass in correlation with the reduction in food intake. Lactate is known to have potential as a signaling molecule rather than a metabolite during exercise. In this study, we examined the effects of the combination of caloric restriction and lactate administration on skeletal muscle adaptation in order to elucidate a novel role of lactate. We first demonstrated that daily lactate administration (equivalent to 1 g/kg of body weight) for 2 weeks suppressed CR-induced muscle atrophy by activating mammalian/mechanistic target of rapamycin (mTOR) signaling, a muscle protein synthesis pathway, and inhibited autophagy-induced muscle degradation. Next, we found that lactate administration under calorie restriction enhanced mitochondrial enzyme activity (citrate synthase and succinate dehydrogenase) and the expression of oxidative phosphorylation (OXPHOS) protein expression. Our results suggest that lactate administration under caloric restriction not only suppresses muscle atrophy but also improves mitochondrial function.
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Affiliation(s)
- Takanaga Shirai
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8574, Ibaraki, Japan.,Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Ibaraki, Japan.,Research Fellow of Japan Society for Promotion Science, Japan
| | - Kazuki Uemichi
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8574, Ibaraki, Japan
| | - Yuki Hidaka
- School of Physical Education, Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8574, Ibaraki, Japan
| | - Yu Kitaoka
- Department of Human Sciences, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama-shi, Kanagawa, 221-8686 Japan
| | - Tohru Takemasa
- Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Ibaraki, Japan
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10
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Park J, Kim J, Mikami T. Exercise-Induced Lactate Release Mediates Mitochondrial Biogenesis in the Hippocampus of Mice via Monocarboxylate Transporters. Front Physiol 2021; 12:736905. [PMID: 34603087 PMCID: PMC8481603 DOI: 10.3389/fphys.2021.736905] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 08/17/2021] [Indexed: 12/25/2022] Open
Abstract
Regular exercise training induces mitochondrial biogenesis in the brain via activation of peroxisome proliferator-activated receptor gamma-coactivator 1α (PGC-1α). However, it remains unclear whether a single bout of exercise would increase mitochondrial biogenesis in the brain. Therefore, we first investigated whether mitochondrial biogenesis in the hippocampus is affected by a single bout of exercise in mice. A single bout of high-intensity exercise, but not low- or moderate-intensity, increased hippocampal PGC-1α mRNA and mitochondrial DNA (mtDNA) copy number at 12 and 48h. These results depended on exercise intensity, and blood lactate levels observed immediately after exercise. As lactate induces mitochondrial biogenesis in the brain, we examined the effects of acute lactate administration on blood and hippocampal extracellular lactate concentration by in vivo microdialysis. Intraperitoneal (I.P.) lactate injection increased hippocampal extracellular lactate concentration to the same as blood lactate level, promoting PGC-1α mRNA expression in the hippocampus. However, this was suppressed by administering UK5099, a lactate transporter inhibitor, before lactate injection. I.P. UK5099 administration did not affect running performance and blood lactate concentration immediately after exercise but attenuated exercise-induced hippocampal PGC-1α mRNA and mtDNA copy number. In addition, hippocampal monocarboxylate transporters (MCT)1, MCT2, and brain-derived neurotrophic factor (BDNF) mRNA expression, except MCT4, also increased after high-intensity exercise, which was abolished by UK5099 administration. Further, injection of 1,4-dideoxy-1,4-imino-D-arabinitol (glycogen phosphorylase inhibitor) into the hippocampus before high-intensity exercise suppressed glycogen consumption during exercise, but hippocampal lactate, PGC-1α, MCT1, and MCT2 mRNA concentrations were not altered after exercise. These results indicate that the increased blood lactate released from skeletal muscle may induce hippocampal mitochondrial biogenesis and BDNF expression by inducing MCT expression in mice, especially during short-term high-intensity exercise. Thus, a single bout of exercise above the lactate threshold could provide an effective strategy for increasing mitochondrial biogenesis in the hippocampus.
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Affiliation(s)
- Jonghyuk Park
- Department of Anatomy and Neurobiology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Jimmy Kim
- Department of Anatomy and Neurobiology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Toshio Mikami
- Department of Health and Sports Science, Nippon Medical School, Tokyo, Japan
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11
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Hesketh KL, Church H, Kinnafick F, Shepherd SO, Wagenmakers AJM, Cocks M, Strauss JA. Evidence-based vs. social media based high-intensity interval training protocols: Physiological and perceptual responses. PLoS One 2021; 16:e0257685. [PMID: 34587217 PMCID: PMC8480907 DOI: 10.1371/journal.pone.0257685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 09/07/2021] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE High intensity interval training (HIIT) is a time-efficient exercise modality to improve cardiorespiratory fitness, and has recently been popularised by social media influencers. However, little is known regarding acute physiological and perceptual responses to these online protocols compared to HIIT protocols used within research. The aim was to investigate acute physiological, perceptual and motivational responses to two HIIT protocols popular on social media, and compare these to two evidence-based protocols. METHODS Twenty-seven recreationally active (>1 exercise session /week) participants (Age: 22±3y, BMI: 24.3±2.4) completed a randomised cross-over study, whereby each participant completed four HIIT protocols, two already established in research (Ergo-60:60 (cycling 10x60s at 100%Wmaxwith 60s rest), BW-60:60 (body-weight exercises 10x60swith 60s rest)) and two promoted on social media (SM-20:10 (body-weight exercises 20x20swith 10s rest) and SM-40:20 (body-weight exercises 15x40s with 20s rest)). Blood lactate, heart rate (HR), feeling scale (FS), felt arousal scale (FSA), enjoyment and perceived competence were measured in response to each protocol. RESULTS Significant differences were observed between BW-60:60 and SM-20:10 for the proportion of intervals meeting the ACSM high-intensity exercise criterion (>80% of HRmax) (BW-60:60 93±10%, SM-20:10 74±20%, P = 0.039) and change in lactate (BW-60:60 +7.8±3.7mmol/L, SM-20:10 +5.5±2.6mmol/L, P = 0.001). The percentage of time spent above the criterion HR was also significantly lower in SM-20:10 compared to all other protocols (Ergo-60:60 13.9±4.9min, BW-60:60 13.5±3.5min, SM-40:20 12.1±2.4min, SM-20:10 7.7±3.1, P<0.05). No differences were observed in lowest reported FS between protocols (P = 0.268), but FS decreased linearly throughout Ergo-60:60 and BW-60:60 (first vs. last interval P<0.05), but not in SM-20:10 or SM-40:20 (P>0.05). Enjoyment was higher upon completion of BW-60:60 compared to Ergo-60:60 and SM-40:20 (P<0.05). CONCLUSIONS This study shows that HIIT protocols available on social media offer an interesting real-world alternative for promoting exercise participation. Future studies should continue to investigate these highly popular and practical HIIT protocols.
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Affiliation(s)
- Katie L. Hesketh
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom
| | - Hannah Church
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom
| | - Florence Kinnafick
- School of Sport, Exercise and Health Sciences, National Centre for Sport and Exercise Medicine, Loughborough University, Loughborough, United Kingdom
| | - Sam O. Shepherd
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom
| | - Anton J. M. Wagenmakers
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom
| | - Matthew Cocks
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom
| | - Juliette A. Strauss
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom
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12
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Shirai T, Hanakita H, Uemichi K, Takemasa T. Effect of the order of concurrent training combined with resistance and high-intensity interval exercise on mTOR signaling and glycolytic metabolism in mouse skeletal muscle. Physiol Rep 2021; 9:e14770. [PMID: 33650809 PMCID: PMC7923557 DOI: 10.14814/phy2.14770] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/28/2021] [Accepted: 02/01/2021] [Indexed: 02/07/2023] Open
Abstract
Athletes train to improve strength and endurance to demonstrate maximum performance during competitions. Training methods vary but most focus on strength, endurance, or both. Concurrent training is a combination of two different modes of training. In this study, we combined resistance exercise (RE) and high-intensity interval exercise (HIIE) to investigate the influence of the order of the concurrent training on signal molecules on hypertrophy and glycolysis in the skeletal muscle. The phosphorylation levels of mechanistic target of rapamycin (mTOR) signals, p70 S6 kinase (p70S6 K), ribosomal protein S6 (S6), and glycogen synthase kinase beta (GSK-3β) were significantly increased in the HIIE first group compared with the control group. The combined training course did not affect the glycogen content and expression levels of proteins concerning glycolytic and metabolic capacity, suggesting that a combination of HIIE and RE on the same day, with HIIE prior to RE, improves hypertrophy response and glycolysis enhancement.
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Affiliation(s)
- Takanaga Shirai
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Research Fellow of Japan Society for the Promotion of Science, Chiyoda-ku, Tokyo, Japan
| | - Hideto Hanakita
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Kazuki Uemichi
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Tohru Takemasa
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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13
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Fritzen AM, Lundsgaard AM, Kiens B. Tuning fatty acid oxidation in skeletal muscle with dietary fat and exercise. Nat Rev Endocrinol 2020; 16:683-696. [PMID: 32963340 DOI: 10.1038/s41574-020-0405-1] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/12/2020] [Indexed: 12/31/2022]
Abstract
Both the consumption of a diet rich in fatty acids and exercise training result in similar adaptations in several skeletal muscle proteins. These adaptations are involved in fatty acid uptake and activation within the myocyte, the mitochondrial import of fatty acids and further metabolism of fatty acids by β-oxidation. Fatty acid availability is repeatedly increased postprandially during the day, particularly during high dietary fat intake and also increases during, and after, aerobic exercise. As such, fatty acids are possible signalling candidates that regulate transcription of target genes encoding proteins involved in muscle lipid metabolism. The mechanism of signalling might be direct or indirect targeting of peroxisome proliferator-activated receptors by fatty acid ligands, by fatty acid-induced NAD+-stimulated activation of sirtuin 1 and/or fatty acid-mediated activation of AMP-activated protein kinase. Lactate might also have a role in lipid metabolic adaptations. Obesity is characterized by impairments in fatty acid oxidation capacity, and individuals with obesity show some rigidity in increasing fatty acid oxidation in response to high fat intake. However, individuals with obesity retain improvements in fatty acid oxidation capacity in response to exercise training, thereby highlighting exercise training as a potential method to improve lipid metabolic flexibility in obesity.
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Affiliation(s)
- Andreas Mæchel Fritzen
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Anne-Marie Lundsgaard
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Bente Kiens
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark.
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14
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In Vitro and In Vivo Effects of Fermented Oyster-Derived Lactate on Exercise Endurance Indicators in Mice. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17238811. [PMID: 33260934 PMCID: PMC7729911 DOI: 10.3390/ijerph17238811] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/17/2020] [Accepted: 11/24/2020] [Indexed: 12/11/2022]
Abstract
Exogenous lactate administration has more recently been investigated for its various prophylactic effects. Lactate derived from potential functional foods, such as fermented oyster extract (FO), may emerge as a practical and effective method of consuming exogenous lactate. The current study endeavored to ascertain whether the lactate derived from FO may act on muscle cell biology, and to what extent this may translate into physical fitness improvements. We examined the effects of FO in vitro and in vivo, on mouse C2C12 cells and exercise performance indicators in mice, respectively. In vitro, biochemical analysis was carried out to determine the effects of FO on lactate content and muscle cell energy metabolism, including adenosine triphosphate (ATP) activity. Western blot analysis was also utilized to measure the protein expression of total adenosine monophosphate-activated protein kinase (AMPK), p-AMPK (Thr172), lactate dehydrogenase (LDH), succinate dehydrogenase (SDHA) and peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α) in response to FO administration. Three experimental groups were formed: a positive control (PC) treated with 1% horse serum, FO10 treated with 10 μg/mL and FO50 treated with 50 μg/mL. In vivo, the effects of FO supplementation on exercise endurance were measured using the Rota-rod test, and Western blot analysis measured myosin heavy-chain 2 (MYH2) to assess skeletal muscle growth, alongside p-AMPK, total-AMPK, PGC-1α, cytochrome C and UCP3 protein expression. Biochemical analysis was also performed on muscle tissue to measure the changes in concentration of liver lactate, lactate dehydrogenase (LDH), glycogen and citrate. Five groups (n = 10/per group) consisted of a control group (CON), exercise group (Ex), positive control treated with Ex and 500 mg/kg Taurine (Ex-Tau), Ex and 100 mg/kg FO supplementation (Ex-FO100) and Ex and 200 mg/kg FO supplementation (Ex-FO200) orally administered over the 4-week experimental period.FO50 significantly increased PGC-1α expression (p < 0.001), whereas both FO10 and FO50 increased the expression of p-AMPK (p < 0.001), in C2C12 muscle cells, showing increased signaling important for mitochondrial metabolism and biogenesis. Muscle lactate levels were also significantly increased following FO10 (p < 0.05) and FO50 (p < 0.001). In vivo, muscle protein expression of p-AMPK (p < 0.05) and PGC-1α were increased, corroborating our in vitro results. Cytochrome C also significantly increased following FO200 intake. These results suggest that the effects of FO supplementation may manifest in a dose-response manner. FO administration, in vitro, and supplementation, in vivo, both demonstrate a potential for improvements in mitochondrial metabolism and biogenesis, and even for potentiating the adaptive effects of endurance exercise. Mechanistically, lactate may be an important molecule in explaining the aforementioned positive effects of FO.
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15
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Changes in gene expression of lactate carriers (MCT1 and CD147) in cardiac muscle of diabetic male rats: the effect of dichloroacetate and endurance training. UKRAINIAN BIOCHEMICAL JOURNAL 2020. [DOI: 10.15407/ubj92.05.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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16
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Takahashi K, Kitaoka Y, Matsunaga Y, Hatta H. Effect of post-exercise lactate administration on glycogen repletion and signaling activation in different types of mouse skeletal muscle. Curr Res Physiol 2020; 3:34-43. [PMID: 34746818 PMCID: PMC8562145 DOI: 10.1016/j.crphys.2020.07.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/21/2020] [Accepted: 07/23/2020] [Indexed: 01/10/2023] Open
Abstract
Lactate is not merely a metabolic intermediate that serves as an oxidizable and glyconeogenic substrate, but it is also a potential signaling molecule. The objectives of this study were to investigate whether lactate administration enhances post-exercise glycogen repletion in association with cellular signaling activation in different types of skeletal muscle. Eight-week-old male ICR mice performed treadmill running (20 m/min for 60 min) following overnight fasting (16 h). Immediately after the exercise, animals received an intraperitoneal injection of phosphate-buffered saline or sodium lactate (equivalent to 1 g/kg body weight), followed by oral ingestion of water or glucose (2 g/kg body weight). At 60 min of recovery, glucose ingestion enhanced glycogen content in the soleus, plantaris, and gastrocnemius muscles. In addition, lactate injection additively increased glycogen content in the plantaris and gastrocnemius muscles, but not in the soleus muscle. Nevertheless, lactate administration did not significantly alter protein levels related to glucose uptake and oxidation in the plantaris muscle, but enhanced phosphorylation of TBC1D1, a distal protein regulating GLUT4 translocation, was observed in the soleus muscle. Muscle FBP2 protein content was significantly higher in the plantaris and gastrocnemius muscles than in the soleus muscle, whereas MCT1 protein content was significantly higher in the soleus muscle than in the plantaris and gastrocnemius muscles. The current findings suggest that an elevated blood lactate concentration and post-exercise glucose ingestion additively enhance glycogen recovery in glycolytic phenotype muscles. This appears to be associated with glyconeogenic protein content, but not with enhanced glucose uptake, attenuated glucose oxidation, or lactate transport protein.
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Affiliation(s)
- Kenya Takahashi
- Department of Sports Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Yu Kitaoka
- Department of Human Sciences, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa, 221-8686, Japan
| | - Yutaka Matsunaga
- Department of Sports Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Hideo Hatta
- Department of Sports Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan
- Corresponding author. Department of Sports Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan.
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17
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Rezaei Nasab H, Habibi AH, Nikbakht M, Rashno M, Shakerian S. Changes in Serum Levels and Gene Expression of PGC-1α in The Cardiac Muscle of Diabetic Rats: The Effect of Dichloroacetate and Endurance Training. CELL JOURNAL 2020; 22:425-430. [PMID: 32347035 PMCID: PMC7211283 DOI: 10.22074/cellj.2021.6942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 07/24/2019] [Indexed: 11/26/2022]
Abstract
Objective Physical activity leads to changes in the level of gene expression in different kinds of cells, including
changes in mitochondrial biogenesis in the myocardium in diabetic patients. Peroxisome proliferator-activated receptor
γ coactivator 1α (PGC-1α) is a gene that plays an important role in regulating mitochondrial biogenesis. The purpose
of this study was to investigate changes in serum levels and cardiac muscle expression of PGC-1α in diabetic rats in
response to the administration of dichloroacetate (DCA) and endurance training.
Materials and Methods In this experimental study, 64 male Wistar rats were selected and randomly divided into eight
groups after induction of diabetes with streptozotocin (STZ). The endurance training protocol was performed on a
treadmill for 6 weeks. Intraperitoneal injection of DCA of 50 mg/ kg body weight was used for the inhibition of Pyruvate
Dehydrogenase Kinase 4 (PDK4) in the myocardium. Gene expression were measured using real-time polymerase
chain reaction (PCR). One-way ANOVA and Tukey’s test were used to statistically analyze the data.
Results The results of the study showed that PDK4 gene expression in the endurance training group, diabetes+endurance
training group, diabetes+endurance training+DCA group and endurance training+DCA group was higher compared to
the control group. Expression of PGC-1α was higher in the endurance training group compared to the control group
but was lower compared to the control group in diabetes+endurance training+DCA group and diabetes+DCA group
(P<0.05).
Conclusion Considering that PGC-1α plays an important role in mitochondrial biogenesis, it is likely that by inhibiting
PDK4 and subsequently controlling oxidation of fatty acid (FA) in the heart tissue, oxidative stress in the heart tissue of
diabetic patients will be reduced and cardiac efficiency will be increased.
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Affiliation(s)
- Hamed Rezaei Nasab
- Department of Exercise Physiology, Faculty of Sport Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran. Electronic Address:
| | - Abdol Hamid Habibi
- Department of Exercise Physiology, Faculty of Sport Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Masoud Nikbakht
- Department of Exercise Physiology, Faculty of Sport Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mohammad Rashno
- Department of Immunology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Cellular and Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Saeed Shakerian
- Department of Exercise Physiology, Faculty of Sport Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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18
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Takahashi K, Kitaoka Y, Yamamoto K, Matsunaga Y, Hatta H. Oral Lactate Administration Additively Enhances Endurance Training-Induced Increase in Cytochrome C Oxidase Activity in Mouse Soleus Muscle. Nutrients 2020; 12:nu12030770. [PMID: 32183387 PMCID: PMC7146285 DOI: 10.3390/nu12030770] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/08/2020] [Accepted: 03/12/2020] [Indexed: 12/25/2022] Open
Abstract
We tested the hypothesis that oral lactate supplementation increases mitochondrial enzyme activity given the potential role of lactate for inducing mitochondrial biogenesis. In this study, mice were assigned to a saline-ingested sedentary group (S+S; n = 8), a lactate-ingested sedentary group (L+S; n = 9), a saline-ingested training group (S+T; n = 8), and a lactate-ingested training group (L+T; n = 8). Mice in the S+S and S+T groups received saline, whereas mice in the L+S and L+T groups received sodium lactate (equivalent to 5 g/kg of body weight) via oral gavage 5 days a week for 4 weeks. At 30 min after the ingestion, mice in the S+T and L+T groups performed endurance training (treadmill running, 20 m/min, 30 min, 5 days/week). At 30 min after lactate ingestion, the blood lactate level reached peak value (5.8 ± 0.4 mmol/L) in the L+S group. Immediately after the exercise, blood lactate level was significantly higher in the L+T group (9.3 ± 0.9 mmol/L) than in the S+T group (2.7 ± 0.3 mmol/L) (p < 0.01). Following a 4-week training period, a main effect of endurance training was observed in maximal citrate synthase (CS) (p < 0.01; S+T: 117 ± 3% relative to S+S, L+T: 110 ± 3%) and cytochrome c oxidase (COX) activities (p < 0.01; S+T: 126 ± 4%, L+T: 121 ± 4%) in the plantaris muscle. Similarly, there was a main effect of endurance training in maximal CS (p < 0.01; S+T: 105 ± 3%, L+T: 115 ± 2%) and COX activities (p < 0.01; S+T: 113 ± 3%, L+T: 122 ± 3%) in the soleus muscle. In addition, a main effect of oral lactate ingestion was found in maximal COX activity in the soleus (p < 0.05; L+S: 109 ± 3%, L+T: 122 ± 3%) and heart muscles (p < 0.05; L+S: 107 ± 3%, L+T: 107 ± 2.0%), but not in the plantaris muscle. Our results suggest that lactate supplementation may be beneficial for increasing mitochondrial enzyme activity in oxidative phenotype muscle.
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Affiliation(s)
- Kenya Takahashi
- Department of Sports Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan; (K.T.); (K.Y.); (Y.M.)
| | - Yu Kitaoka
- Department of Human Sciences, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686, Japan;
| | - Ken Yamamoto
- Department of Sports Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan; (K.T.); (K.Y.); (Y.M.)
| | - Yutaka Matsunaga
- Department of Sports Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan; (K.T.); (K.Y.); (Y.M.)
| | - Hideo Hatta
- Department of Sports Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan; (K.T.); (K.Y.); (Y.M.)
- Correspondence: ; Tel.: +81-3-5454-6862
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19
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Goutianos G, Margaritelis NV, Sparopoulou T, Veskoukis AS, Vrabas IS, Paschalis V, Nikolaidis MG, Kyparos A. Chronic administration of plasma from exercised rats to sedentary rats does not induce redox and metabolic adaptations. J Physiol Sci 2020; 70:3. [PMID: 32039695 PMCID: PMC6995785 DOI: 10.1186/s12576-020-00737-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/22/2020] [Indexed: 12/15/2022]
Abstract
The present study aimed to investigate whether endurance exercise-induced changes in blood plasma composition may lead to adaptations in erythrocytes, skeletal muscle and liver. Forty sedentary rats were randomly distributed into two groups: a group that was injected with pooled plasma from rats that swam until exhaustion and a group that was injected with the pooled plasma from resting rats (intravenous administration at a dose of 2 mL/kg body weight for 21 days). Total antioxidant capacity, malondialdehyde and protein carbonyls were higher in the plasma collected from the exercised rats compared to the plasma from the resting rats. Νo significant difference was found in blood and tissue redox biomarkers and in tissue metabolic markers between rats that received the "exercised" or the "non-exercised" plasma (P > 0.05). Our results demonstrate that plasma injections from exercised rats to sedentary rats do not induce redox or metabolic adaptations in erythrocytes, skeletal muscle and liver.
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Affiliation(s)
- Georgios Goutianos
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Agios Ioannis, 62110, Serres, Greece
| | - Nikos V Margaritelis
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Agios Ioannis, 62110, Serres, Greece.,Intensive Care Unit, 424 General Military Hospital of Thessaloniki, Thessaloniki, Greece
| | - Theodora Sparopoulou
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Agios Ioannis, 62110, Serres, Greece.,Department of Animal Structure and Function, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Aristidis S Veskoukis
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Agios Ioannis, 62110, Serres, Greece.,Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - Ioannis S Vrabas
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Agios Ioannis, 62110, Serres, Greece
| | - Vassilis Paschalis
- School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece
| | - Michalis G Nikolaidis
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Agios Ioannis, 62110, Serres, Greece
| | - Antonios Kyparos
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Agios Ioannis, 62110, Serres, Greece.
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20
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Takahashi K, Kitaoka Y, Matsunaga Y, Hatta H. Effects of lactate administration on mitochondrial enzyme activity and monocarboxylate transporters in mouse skeletal muscle. Physiol Rep 2019; 7:e14224. [PMID: 31512405 PMCID: PMC6739509 DOI: 10.14814/phy2.14224] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/11/2019] [Accepted: 08/13/2019] [Indexed: 12/14/2022] Open
Abstract
Growing evidence shows that lactate is not merely an intermediate metabolite, but also a potential signaling molecule. However, whether daily lactate administration induces physiological adaptations in skeletal muscle remains to be elucidated. In this study, we first investigated the effects of daily lactate administration (equivalent to 1 g/kg of body weight) for 3 weeks on mitochondrial adaptations in skeletal muscle. We demonstrated that 3-week lactate administration increased mitochondrial enzyme activity (citrate synthase, 3-hydroxyacyl CoA dehydrogenase, and cytochrome c oxidase) in the plantaris muscle, but not in the soleus muscle. MCT1 and MCT4 protein contents were not different after 3-week lactate administration. Next, we examined whether lactate administration enhances training-induced adaptations in skeletal muscle. Lactate administration prior to endurance exercise training (treadmill running, 20 m/min, 60 min/day), which increased blood lactate concentration during exercise, enhanced training-induced mitochondrial enzyme activity in the skeletal muscle after 3 weeks. MCT protein content and blood lactate removal were not different after 3-week lactate administration with exercise training compared to exercise training alone. In a single bout experiment, lactate administration did not change the phosphorylation state of AMPK, ACC, p38 MAPK, and CaMKII in skeletal muscle. Our results suggest that lactate can be a key factor for exercise-induced mitochondrial adaptations, and that the efficacy of high-intensity training is, at least partly, attributed to elevated blood lactate concentration.
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Affiliation(s)
- Kenya Takahashi
- Department of Sports SciencesThe University of TokyoTokyoJapan
| | - Yu Kitaoka
- Department of Human SciencesKanagawa UniversityKanagawaJapan
| | | | - Hideo Hatta
- Department of Sports SciencesThe University of TokyoTokyoJapan
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21
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Huang J, Du J, Lin W, Long Z, Zhang N, Huang X, Xie Y, Liu L, Ma W. Regulation of lactate production through p53/β-enolase axis contributes to statin-associated muscle symptoms. EBioMedicine 2019; 45:251-260. [PMID: 31201144 PMCID: PMC6642070 DOI: 10.1016/j.ebiom.2019.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/12/2019] [Accepted: 06/03/2019] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Statin-associated muscle symptoms (SAMS) are the major adverse effects of the class of widely used lipid-lowering agents, and the underlying mechanism remains elusive. In this study, we investigated the potential contribution and molecular mechanism of increased lactate production to SAMS in mice. METHODS C57BL/6 J mice were administrated with lovastatin and exercise capacity and blood and muscle lactate levels were measured. A variety of metabolic and molecular experiments were carried out on skeletal muscle cell lines A-204 and C2C12 to confirm the in vivo findings, and to delineate the molecular pathway regulating lactate production by statins. FINDINGS Blood lactate levels of mice treated with lovastatin increased 23% compared to the control group, which was reproduced in type II predominant glycolytic muscles, accompanied with a 23.1% decrease of maximum swim duration time. The in vitro evidence revealed that statins increased the expression of muscle specific glycolytic enzyme β-enolase through promoting the degradation of basal p53 proteins, resulting in increased of lactate production. Co-administered with dichloroacetate (DCA), a reagent effective in treating lactic acidosis, reverted the elevated lactate levels and the decreased exercise capacity. INTERPRETATION Elevated lactate production by statins through the p53/β-enolase axis contributes to SAMS. FUND: This work was supported by grants from the Science and Technology Development Fund (FDCT) of Macau (Project codes: 034/2015/A1 and 0013/2019/A1).
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Affiliation(s)
- Jiajun Huang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Jingjing Du
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Wanjun Lin
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Ze Long
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Na Zhang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Xiaoming Huang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Ying Xie
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Liang Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.
| | - Wenzhe Ma
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.
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22
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Hashimoto T, Yokokawa T, Narusawa R, Okada Y, Kawaguchi R, Higashida K. A lactate-based compound containing caffeine in addition to voluntary running exercise decreases subcutaneous fat mass and improves glucose metabolism in obese rats. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.03.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Cerda‐Kohler H, Henríquez‐Olguín C, Casas M, Jensen TE, Llanos P, Jaimovich E. Lactate administration activates the ERK1/2, mTORC1, and AMPK pathways differentially according to skeletal muscle type in mouse. Physiol Rep 2018; 6:e13800. [PMID: 30230254 PMCID: PMC6144450 DOI: 10.14814/phy2.13800] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 06/25/2018] [Indexed: 12/12/2022] Open
Abstract
Skeletal muscle is described as an endocrine organ, constitutively or intermittently secreting bioactive molecules. The signaling pathways by which these molecules mediate changes in skeletal muscle and regulate interorgan crosstalk are only partly understood. Lactate is widely described as a signaling molecule in different cells, but the role of lactate as a signaling molecule in mature skeletal muscle has not been fully unveiled. The aim of this study was to determine the role of lactate on activation of signaling pathways in adult mouse skeletal muscle. Male mice were injected intraperitoneally with lactate or saline, and tissues were dissected after 40 min. Phosphorylation levels of relevant proteins in muscle were assessed by Western blotting. After lactate administration, we found an increase in p-ERK1/2Thr202/Tyr204 (3.5-fold; P = 0.004) and p-p70S6KThr389 (1.9-fold; P = 0.01) in quadriceps; and an increase in p-rpS6Ser235/236 in both quadriceps (6.3-fold; P = 0.01) and EDL (2.3-fold; P = 0.01), without changes in soleus. There was a tendency toward an increase in p-AMPKThr172 (1.7-fold; P = 0.08), with a significant increase in p-ACCSer79 (1.5-fold; P = 0.04) in soleus, without changes in quadriceps and EDL. These results support the hypothesis that lactate plays a role in the molecular signaling related to hypertrophy and to oxidative metabolism on adult skeletal muscle and suggest that this activation depends on the skeletal muscle type. The mechanisms that underlie the effect of lactate in mature skeletal muscles remain to be established.
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Affiliation(s)
- Hugo Cerda‐Kohler
- Faculty of MedicineCenter for Exercise, Metabolism and CancerICBMUniversidad de ChileSantiagoChile
- Laboratory of Exercise ScienceClínica MEDSSantiagoChile
| | - Carlos Henríquez‐Olguín
- Faculty of MedicineCenter for Exercise, Metabolism and CancerICBMUniversidad de ChileSantiagoChile
- Laboratory of Exercise ScienceClínica MEDSSantiagoChile
- Department of Nutrition, Exercise and SportsMolecular Physiology GroupFaculty of ScienceUniversity of CopenhagenCopenhagenDenmark
| | - Mariana Casas
- Faculty of MedicineCenter for Exercise, Metabolism and CancerICBMUniversidad de ChileSantiagoChile
- Physiology and Biophysics ProgramICBMFaculty of MedicineUniversidad de ChileSantiagoChile
| | - Thomas E. Jensen
- Department of Nutrition, Exercise and SportsMolecular Physiology GroupFaculty of ScienceUniversity of CopenhagenCopenhagenDenmark
| | - Paola Llanos
- Faculty of MedicineCenter for Exercise, Metabolism and CancerICBMUniversidad de ChileSantiagoChile
- Institute for Research in Dental SciencesFacultad de OdontologíaUniversidad de ChileSantiagoChile
| | - Enrique Jaimovich
- Faculty of MedicineCenter for Exercise, Metabolism and CancerICBMUniversidad de ChileSantiagoChile
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24
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Combes A, Dekerle J, Bougault V, Daussin FN. Physiological comparison of intensity-controlled, isocaloric intermittent and continuous exercise. Eur J Sport Sci 2018; 18:1368-1375. [PMID: 29975588 DOI: 10.1080/17461391.2018.1491627] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
VO2 fluctuations are argued to be an important mechanism underpinning chronic adaptations following interval training. We compared the effect of exercise modality, continuous vs. intermittent realized at a same intensity, on electrical muscular activity, muscular oxygenation and on whole body oxygen uptake. Twelve participants (24 ± 5 years; VO2peak: 43 ± 6 mL· min-1·kg-1) performed (i) an incremental test to exhaustion to determine peak work rate (WRpeak); two randomized isocaloric exercises at 70%WRpeak; (ii) 1 bout of 30 min; (iii) 30 bouts of 1 min work intercepted with 1 min passive recovery. For electromyography, only the CON exercise showed change for the vastus lateralis root-mean-square (+6.4 ± 5.1%, P < .01, 95%CI 3.2, 8.3) and mean power frequency (-5.2 ± 4.8, P < .01, 95%CI -8.2, -3.5). Metabolic fluctuations (i.e. Oxygen Fluctuation Index and HHb Fluctuation Index) were higher in the intermittent modality, while post-exercise blood lactate concentrations (4.80 ± 1.50 vs. 2.32 ± 1.21 mM, respectively, for the CON and INT, P < .01, 95%CI 1.72, 3.12) and the time spent over 90% of VO2 target (1644 ± 152 vs. 356 ± 301 sec, respectively, for the CON and INT, P < .01, 95%CI 1130, 1446) were higher in the continuous modality. In conclusion, despite a similar energy expenditure and intensity, intermittent and continuous exercises showed two very different physiological responses. The intermittent modality would lead to a larger recruitment of fast twitch fibres that are less mitochondria-equipped and therefore may be more likely respondent to mitochondrial adaptations. In addition, this modality induces greater metabolic variations, a stimulus who could lead to mitochondrial development.
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Affiliation(s)
- Adrien Combes
- a Unité de Recherche Pluridisciplinaire Sport Santé Société - EA 7369 - URePSSS, Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale , Lille , France
| | - Jeanne Dekerle
- b Centre for Sport, Exercise Science and Medicine (SESAME) , University of Brighton , Eastbourne , UK
| | - Valérie Bougault
- a Unité de Recherche Pluridisciplinaire Sport Santé Société - EA 7369 - URePSSS, Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale , Lille , France
| | - Frédéric N Daussin
- a Unité de Recherche Pluridisciplinaire Sport Santé Société - EA 7369 - URePSSS, Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale , Lille , France
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25
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Amiya E, Taya M. Is Exercise Training Appropriate for Patients With Advanced Heart Failure Receiving Continuous Inotropic Infusion? A Review. CLINICAL MEDICINE INSIGHTS-CARDIOLOGY 2018; 12:1179546817751438. [PMID: 29326534 PMCID: PMC5757424 DOI: 10.1177/1179546817751438] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 12/07/2017] [Indexed: 12/18/2022]
Abstract
Exercise-based rehabilitation programs have been reported to have beneficial effects for patients with heart failure. However, there is little evidence about whether this is the case in patients with more severe heart failure. In particular, there is a question in the clinical setting whether patients with advanced heart failure and continuous inotropic infusion should be prescribed exercise training. In contrast, many studies conclude that prolonged immobility associated with heart failure profoundly impairs physical function and promotes muscle wasting that could further hasten the course of heart failure. By contrast, exercise training has various effects not only in improving exercise capacity but also on vascular function, skeletal muscle, and autonomic balance. In this review, we summarize the effectiveness and discuss methods of exercise training in patients with advanced heart failure receiving continuous inotropic agents such as dobutamine.
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Affiliation(s)
- Eisuke Amiya
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masanobu Taya
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Rehabilitation Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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26
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Liu X, Wang Y, Gao R, Xing Y, Li X, Wang Z. Serum metabolomic response to exercise training in spontaneously hypertensive rats. ACTA ACUST UNITED AC 2017; 11:428-436. [PMID: 28602674 DOI: 10.1016/j.jash.2017.05.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 04/19/2017] [Accepted: 05/13/2017] [Indexed: 10/19/2022]
Abstract
Chronic aerobic exercise training exhibits blood pressure protective effects, but the mechanism in metabolic level remains largely unclear. This study aims to investigate the effect of exercise training from serum metabolic profiles on the development of hypertension in spontaneously hypertensive rats (SHRs). Exercise training was performed, and the serum metabolites were measured by integrating gas chromatography-mass spectrometer and correlation-based network analysis. After a period of 6 weeks of chronic aerobic exercise training, systolic blood pressure was significant lower in the exercise training group (SHR + EX) rats than the control group (SHR). Principal component analysis indicated a clearly separation of metabolomic profiles between SHR + EX and SHR. Nineteen of 63 metabolites in serum were identified (P < .05, variable importance in projections > 1, false discovery rate < 0.1), including fatty acids, amino acids, and others. Lower levels of six fatty acids were observed in SHR + EX. Besides, pathway analysis indicated a significant alteration of fatty acid metabolism. The correlation-based (Pearson correlation coefficient > 0.83) network of serum metabolites revealed a decreased correlation linkage of SHR + EX than SHR rats. Higher activities of hexokinase, citrate synthase, aspartate aminotransferase, and alanine aminotransferase were detected in liver, left ventricle, and skeletal muscle of SHR + EX groups. In summary, these findings provided essential biochemistry information about the metabolic alteration to exercise training in SHR, which may in part explain the protective effect of exercise in hypertensive individuals.
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Affiliation(s)
- Xiangyang Liu
- Department of Endocrinology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yanjun Wang
- Department of Emergency, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Rui Gao
- Department of Respiration, Xi'an Children's Hospital, Xi'an, China
| | - Ying Xing
- Department of Endocrinology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Xiaomiao Li
- Department of Endocrinology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Zhengjun Wang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China.
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Nalbandian M, Takeda M. Lactate as a Signaling Molecule That Regulates Exercise-Induced Adaptations. BIOLOGY 2016; 5:E38. [PMID: 27740597 PMCID: PMC5192418 DOI: 10.3390/biology5040038] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 09/28/2016] [Indexed: 12/21/2022]
Abstract
Lactate (or its protonated form: lactic acid) has been studied by many exercise scientists. The lactate paradigm has been in constant change since lactate was first discovered in 1780. For many years, it was unfairly seen as primarily responsible for muscular fatigue during exercise and a waste product of glycolysis. The status of lactate has slowly changed to an energy source, and in the last two decades new evidence suggests that lactate may play a much bigger role than was previously believed: many adaptations to exercise may be mediated in some way by lactate. The mechanisms behind these adaptations are yet to be understood. The aim of this review is to present the state of lactate science, focusing on how this molecule may mediate exercise-induced adaptations.
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Affiliation(s)
- Minas Nalbandian
- Graduate School of Sports and Health Science, Doshisha University, Kyoto 610-0394, Japan.
| | - Masaki Takeda
- Faculty of Sports and Health Science, Doshisha University, Kyoto 610-0394, Japan.
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Kitaoka Y, Takeda K, Tamura Y, Hatta H. Lactate administration increases mRNA expression of PGC-1α and UCP3 in mouse skeletal muscle. Appl Physiol Nutr Metab 2016; 41:695-8. [PMID: 27218871 DOI: 10.1139/apnm-2016-0016] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
To examine the potential role of lactate as a signalling molecule in skeletal muscle, we performed global gene expression analysis of the mouse gastrocnemius muscle, 3 h after lactate administration using the Affymetrix GeneChip system (Affymetrix, Santa Clara, Calif., USA). Among the top 15 genes with the largest fold change, increased expression of Ppargc1a, Pdk4, and Ucp3 was confirmed using real-time quantitative polymerase chain reaction. Our findings suggest that lactate serves as a signal for upregulating genes related to mitochondrial function.
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Affiliation(s)
- Yu Kitaoka
- a Department of Sports Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Kohei Takeda
- b Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Japan
| | - Yuki Tamura
- a Department of Sports Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Hideo Hatta
- a Department of Sports Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
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29
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Hoshino D, Kitaoka Y, Hatta H. High-intensity interval training enhances oxidative capacity and substrate availability in skeletal muscle. ACTA ACUST UNITED AC 2016. [DOI: 10.7600/jpfsm.5.13] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
| | - Yu Kitaoka
- Department of Sports Sciences, The University of Tokyo
| | - Hideo Hatta
- Department of Sports Sciences, The University of Tokyo
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