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Maaloul R, Ben Dhia I, Marzougui H, Turki M, Kacem FH, Makhlouf R, Amar MB, Kallel C, Driss T, Elleuch MH, Ayadi F, Ghroubi S, Hammouda O. Is moderate-intensity interval training more tolerable than high-intensity interval training in adults with obesity? Biol Sport 2023; 40:1159-1167. [PMID: 37867744 PMCID: PMC10588567 DOI: 10.5114/biolsport.2023.123323] [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: 05/31/2022] [Revised: 07/03/2022] [Accepted: 02/01/2023] [Indexed: 10/24/2023] Open
Abstract
Interval training (IT) has been shown to be a time-effective alternative to traditional training programmes in the management of obesity. Nevertheless, studies comparing the effects of different IT intensities on inflammation, muscle and liver damage, and perceptual responses in people with obesity are relatively scarce. This study aimed to compare the acute effects of two different IT protocols matched by the mean load and duration on biochemical and perceptual responses in sedentary adults with obesity. Twenty-two volunteers (age = 33.40 ± 10.01 years, BMI = 38.29 ± 7.09 kg/m²) were randomized to perform two conditions: moderate-intensity IT (MIIT) 5 × 3 min (70% of peak power output (PPO))/2 min (45%PPO) and high-intensity IT (HIIT) 8 × 1 min (90%PPO)/2 min (45%PPO). Blood samples were drawn before and after exercise for biochemical and haematological measurements. Rating of perceived exertion (RPE) was assessed during and after exercise. Perceptual pain was evaluated before, throughout and after exercise. C-reactive protein, white blood cells and neutrophils increased only after HIIT (p < 0.001, for all). Aspartate aminotransferase, alanine aminotransferase, creatine kinase and lactate dehydrogenase increased in both HIIT and MIIT (p < 0.001, for all), without any difference between sessions. HIIT induced a greater increase of blood lactate compared to MIIT (p < 0.05). Pain and RPE scores were higher during HIIT vs. MIIT (p < 0.001 and p < 0.01, respectively). MIIT induced fewer immune system perturbations and less muscle pain and was perceived as more tolerable compared to HIIT session. Therefore, MIIT could be used as a first step to promote body adaptations before starting a HIIT programme in sedentary people with obesity.
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Affiliation(s)
- Rami Maaloul
- Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine, University of Sfax, Tunisia
- High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
| | - Imen Ben Dhia
- High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
- Research Laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Houssem Marzougui
- Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine, University of Sfax, Tunisia
- High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
| | - Mouna Turki
- Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine, University of Sfax, Tunisia
| | - Faten Hadj Kacem
- Endocrinology Department, Hedi Chaker University Hospital, Sfax, Tunisia
| | - Rihab Makhlouf
- Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine, University of Sfax, Tunisia
| | - Mohamed Ben Amar
- Department of General and Digestive Surgery, Faculty of Medicine, University of Sfax, Habib Bourguiba Hospital, Sfax, Tunisia
| | - Choumous Kallel
- Department of hematology, Habib Bourguiba Hospital, Sfax, Tunisia
| | - Tarak Driss
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), UFR STAPS, UPL, Paris Nanterre University, Nanterre, France
| | - Mohamed Habib Elleuch
- Research Laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Fatma Ayadi
- Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine, University of Sfax, Tunisia
| | - Sameh Ghroubi
- Research Laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Omar Hammouda
- Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine, University of Sfax, Tunisia
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), UFR STAPS, UPL, Paris Nanterre University, Nanterre, France
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D'Alleva M, Vaccari F, Graniero F, Giovanelli N, Floreani M, Fiori F, Marinoni M, Parpinel M, Lazzer S. Effects of 12-week combined training versus high intensity interval training on cardiorespiratory fitness, body composition and fat metabolism in obese male adults. J Exerc Sci Fit 2023; 21:193-201. [PMID: 36820014 PMCID: PMC9937988 DOI: 10.1016/j.jesf.2023.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 01/28/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023] Open
Abstract
Background /Objectives: A weekly combination of a high volume of moderate-intensity continuous training (MICT) with a low volume of high-intensity interval training (HIIT) provides important improvements in body composition and physical capacities in individuals with obesity. However, previous studies did not determine the weekly proportions of HIIT and MICT a priori. This study aimed to investigate changes in body composition, physical capacities and the fat oxidation rate in obese male adults by comparing a combination of MICT and HIIT, called combined training (COMB), with HIIT for a 12-week period. Methods Thirty-four obese male adults (mean age: 39.4 ± 7.0 y; mean body mass index [BMI] 34.0 ± 4.2 kg m-2) participated in this study (n = 18 for COMB, n = 16 HIIT), attending ∼ 36 training sessions. The COMB group performed 3 repetitions of 2 min at 95% of peak oxygen uptake (V'O2 peak) (e.g., HIIT ≤20%), followed by 30 min at 60% of VO2 peak (e.g., MICT ≥80%). The HIIT group performed 5-7 repetitions of 2 min at 95% of VO2 peak. At baseline (PRE) and at the end of the training period (POST), body composition, VO2 peak, and the fat oxidation rate were measured. The two training programs were equivalent in caloric expenditure. Results At POST, body mass (BM) and fat mass (FM) decreased by a mean of 3.09 ± 3.21 kg and 3.90 ± 2.40 kg, respectively (P < 0.05), in both groups and V'O2 peak increased in both groups by a mean of 0.47 ± 0.34 L min-1 (P < 0.05). The maximal fat oxidation rate increased similarly in both groups from 0.32 ± 0.05 to 0.36 ± 0.06 g min-1 (P < 0.05). Conclusion COMB training represents a viable alternative to HIIT to improve anthropometric characteristics, physical capacities and fat oxidation in obese male adults.
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Affiliation(s)
- Mattia D'Alleva
- Department of Medicine, University of Udine, Udine, Italy
- School of Sport Sciences, University of Udine, Udine, Italy
| | - Filippo Vaccari
- Department of Medicine, University of Udine, Udine, Italy
- School of Sport Sciences, University of Udine, Udine, Italy
| | - Francesco Graniero
- Physical Exercise Prescription Center, Azienda Sanitaria Universitaria Friuli Centrale, Gemona del Friuli, Italy
| | - Nicola Giovanelli
- Department of Medicine, University of Udine, Udine, Italy
- School of Sport Sciences, University of Udine, Udine, Italy
| | - Mirco Floreani
- Department of Medicine, University of Udine, Udine, Italy
- School of Sport Sciences, University of Udine, Udine, Italy
| | - Federica Fiori
- Department of Medicine, University of Udine, Udine, Italy
| | | | - Maria Parpinel
- Department of Medicine, University of Udine, Udine, Italy
| | - Stefano Lazzer
- Department of Medicine, University of Udine, Udine, Italy
- School of Sport Sciences, University of Udine, Udine, Italy
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Lee S, Choi Y, Jeong E, Park J, Kim J, Tanaka M, Choi J. Physiological significance of elevated levels of lactate by exercise training in the brain and body. J Biosci Bioeng 2023; 135:167-175. [PMID: 36681523 DOI: 10.1016/j.jbiosc.2022.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/15/2022] [Accepted: 12/07/2022] [Indexed: 01/21/2023]
Abstract
For the past 200 years, lactate has been regarded as a metabolic waste end product that causes fatigue during exercise. However, lactate production is closely correlated with energy metabolism. The lactate dehydrogenase-catalyzed reaction uses protons to produce lactate, which delays ongoing metabolic acidosis. Of note, lactate production differs depending on exercise intensity and is not limited to muscles. Importantly, controlling physiological effect of lactate may be a solution to alleviating some chronic diseases. Released through exercise, lactate is an important biomarker for fat oxidation in skeletal muscles. During recovery after sustained strenuous exercise, most of the lactate accumulated during exercise is removed by direct oxidation. However, as the muscle respiration rate decreases, lactate becomes a desirable substrate for hepatic glucose synthesis. Furthermore, improvement in brain function by lactate, particularly, through the expression of vascular endothelial growth factor and brain-derived neurotrophic factor, is being increasingly studied. In addition, it is possible to improve stress-related symptoms, such as depression, by regulating the function of hippocampal mitochondria, and with an increasingly aging society, lactate is being investigated as a preventive agent for brain diseases such as Alzheimer's disease. Therefore, the perception that lactate is equivalent to fatigue should no longer exist. This review focuses on the new perception of lactate and how lactate acts extensively in the skeletal muscles, heart, brain, kidney, and liver. Additionally, lactate is now used to confirm exercise performance and should be further studied to assess its impact on exercise training.
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Affiliation(s)
- Sungjun Lee
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea; Feynman Institute of Technology, Nanomedicine Corporation, Seoul 06974, Republic of Korea
| | - Yonghyun Choi
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea; Feynman Institute of Technology, Nanomedicine Corporation, Seoul 06974, Republic of Korea
| | - Eunseo Jeong
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jongjun Park
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jiwon Kim
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea; Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Masayoshi Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama-shi, Kanagawa 226-8503, Japan
| | - Jonghoon Choi
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea; Feynman Institute of Technology, Nanomedicine Corporation, Seoul 06974, Republic of Korea; Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Moderate-Intensity Intermittent Training Alters the DNA Methylation Pattern of PDE4D Gene in Hippocampus to Improve the Ability of Spatial Learning and Memory in Aging Rats Reduced by D-Galactose. Brain Sci 2023; 13:brainsci13030422. [PMID: 36979232 PMCID: PMC10046546 DOI: 10.3390/brainsci13030422] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/21/2023] [Accepted: 02/26/2023] [Indexed: 03/05/2023] Open
Abstract
(1) Background: Aging is the main risk factor for most neurodegenerative diseases, and the inhibition of Phosphodiesterase 4(PDE4) is considered a potential target for the treatment of neurological diseases. The purpose of this study was to investigate the inhibitory effect of moderate-intensity intermittent training (MIIT) on PDE4 in the hippocampus of rats with D-galactose (D-gal)-induced cognitive impairment, and the possible mechanism of improving spatial learning and memory. (2) Methods: the aging rats were treated with D-Gal (150 mg/kg/day, for 6 weeks). The aging rats were treated with MIIT for exercise intervention (45 min/day, 5 days/week, for 8 weeks). The Morris water maze test was performed before and after MIIT to evaluate the spatial learning and memory ability, then to observe the synaptic ultrastructure of the hippocampus CA1 region, to detect the expression of synaptic-related protein synaptophysin (SYP) and postsynaptic density protein 95 (PSD95), and to detect the expression of PDE4 subtypes, cAMP, and its signal pathway protein kinase A (PKA)/cAMP response element binding protein (CREB)/brain-derived neurotrophic factor (BDNF), and the PDE4 methylation level. (3) Results: we found that MIIT for 8 weeks alleviated the decline in spatial learning and memory ability, and improved the synaptic structure of the hippocampus and the expression of synaptic protein SYP and PSD95 in D-Gal aging rats. To elucidate the mechanism of MIIT, we analyzed the expression of PDE4 isoforms PDE4A/PDE4B/PDE4D, cAMP, and the signaling pathway PKA/CREB/BDNF, which play an important role in memory consolidation and maintenance. The results showed that 8 weeks of MIIT significantly up-regulated cAMP, PKA, p-CREB, and BDNF protein expression, and down-regulated PDE4D mRNA and protein expression. Methylation analysis of the PDE4D gene showed that several CG sites in the promoter and exon1 regions were significantly up-regulated. (4) Conclusions: MIIT can improve the synaptic structure of the hippocampus CA1 area and improve the spatial learning and memory ability of aging rats, which may be related to the specific regulation of the PDE4D gene methylation level and inhibition of PDE4D expression.
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Price M, Bottoms L, Hill M, Eston R. Maximal Fat Oxidation during Incremental Upper and Lower Body Exercise in Healthy Young Males. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15311. [PMID: 36430032 PMCID: PMC9691189 DOI: 10.3390/ijerph192215311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/12/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
The aim of this study is to determine the magnitude of maximal fat oxidation (MFO) during incremental upper and lower body exercise. Thirteen non-specifically trained male participants (19.3 ± 0.5 y, 78.1 ± 9.1 kg body mass) volunteered for this repeated-measures study, which had received university ethics committee approval. Participants undertook two incremental arm crank (ACE) and cycle ergometry (CE) exercise tests to volitional exhaustion. The first test for each mode served as habituation. The second test was an individualised protocol, beginning at 40% of the peak power output (POpeak) achieved in the first test, with increases of 10% POpeak until volitional exhaustion. Expired gases were recorded at the end of each incremental stage, from which fat and carbohydrate oxidation rates were calculated. MFO was taken as the greatest fat oxidation value during incremental exercise and expressed relative to peak oxygen uptake (%V˙O2peak). MFO was lower during ACE (0.44 ± 0.24 g·min-1) than CE (0.77 ± 0.31 g·min-1; respectively, p < 0.01) and occurred at a lower exercise intensity (53 ± 21 vs. 67 ± 18%V˙O2peak; respectively, p < 0.01). Inter-participant variability for MFO was greatest during ACE. These results suggest that weight loss programs involving the upper body should occur at lower exercise intensities than for the lower body.
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Affiliation(s)
- Mike Price
- Centre for Sport, Exercise and Life Sciences, School of Life Sciences, Coventry University, Coventry CV1 5FB, UK
| | - Lindsay Bottoms
- Department of Psychology, Sport and Geography, University of Hertfordshire, Hatfield AL10 9AB, UK
| | - Matthew Hill
- Centre for Sport, Exercise and Life Sciences, School of Life Sciences, Coventry University, Coventry CV1 5FB, UK
| | - Roger Eston
- Alliance for Research in Exercise, Nutrition and Activity, Campus Central—City East, University of South Australia, GPO Box 2471, Adelaide 5001, Australia
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Bouamra M, Zouhal H, Ratel S, Makhlouf I, Bezrati I, Chtara M, Behm DG, Granacher U, Chaouachi A. Concurrent Training Promotes Greater Gains on Body Composition and Components of Physical Fitness Than Single-Mode Training (Endurance or Resistance) in Youth With Obesity. Front Physiol 2022; 13:869063. [PMID: 35669575 PMCID: PMC9164296 DOI: 10.3389/fphys.2022.869063] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 04/19/2022] [Indexed: 12/24/2022] Open
Abstract
The prevalence of obesity in the pediatric population has become a major public health issue. Indeed, the dramatic increase of this epidemic causes multiple and harmful consequences, Physical activity, particularly physical exercise, remains to be the cornerstone of interventions against childhood obesity. Given the conflicting findings with reference to the relevant literature addressing the effects of exercise on adiposity and physical fitness outcomes in obese children and adolescents, the effect of duration-matched concurrent training (CT) [50% resistance (RT) and 50% high-intensity-interval-training (HIIT)] on body composition and physical fitness in obese youth remains to be elucidated. Thus, the purpose of this study was to examine the effects of 9-weeks of CT compared to RT or HIIT alone, on body composition and selected physical fitness components in healthy sedentary obese youth. Out of 73 participants, only 37; [14 males and 23 females; age 13.4 ± 0.9 years; body-mass-index (BMI): 31.2 ± 4.8 kg·m-2] were eligible and randomized into three groups: HIIT (n = 12): 3-4 sets×12 runs at 80-110% peak velocity, with 10-s passive recovery between bouts; RT (n = 12): 6 exercises; 3-4 sets × 10 repetition maximum (RM) and CT (n = 13): 50% serial completion of RT and HIIT. CT promoted significant greater gains compared to HIIT and RT on body composition (p < 0.01, d = large), 6-min-walking test distance (6 MWT-distance) and on 6 MWT-VO2max (p < 0.03, d = large). In addition, CT showed substantially greater improvements than HIIT in the medicine ball throw test (20.2 vs. 13.6%, p < 0.04, d = large). On the other hand, RT exhibited significantly greater gains in relative hand grip strength (p < 0.03, d = large) and CMJ (p < 0.01, d = large) than HIIT and CT. CT promoted greater benefits for fat, body mass loss and cardiorespiratory fitness than HIIT or RT modalities. This study provides important information for practitioners and therapists on the application of effective exercise regimes with obese youth to induce significant and beneficial body composition changes. The applied CT program and the respective programming parameters in terms of exercise intensity and volume can be used by practitioners as an effective exercise treatment to fight the pandemic overweight and obesity in youth.
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Affiliation(s)
- Marwa Bouamra
- Tunisian Research Laboratory “Sports Performance Optimization”, National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
- High Institute of Sport and Physical Education, Ksar-Saïd, Manouba University, Tunis, Tunisia
| | - Hassane Zouhal
- M2S (Laboratoire Mouvement, Sport, Santé) EA 1274, University of Rennes, Rennes, France
- Institut International des Sciences du Sport (2I2S), Irodouer, France
| | - Sébastien Ratel
- AME2P, EA 3533, Clermont-Auvergne University, Clermont-Ferrand, France
| | - Issam Makhlouf
- Tunisian Research Laboratory “Sports Performance Optimization”, National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
- High Institute of Sport and Physical Education, Ksar-Saïd, Manouba University, Tunis, Tunisia
| | - Ikram Bezrati
- Tunisian Research Laboratory “Sports Performance Optimization”, National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
| | - Mokhtar Chtara
- Tunisian Research Laboratory “Sports Performance Optimization”, National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
| | - David G. Behm
- School of Human Kinetics and Recreation, Memorial University of Newfoundland, St. John’s, NL, Canada
| | - Urs Granacher
- Division of Training and Movement Sciences, University of Potsdam, Potsdam, Germany
| | - Anis Chaouachi
- Tunisian Research Laboratory “Sports Performance Optimization”, National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
- High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
- Sports Performance Research Institute New Zealand, AUT University, Auckland, New Zealand
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Ahmadi A, Rajabi H, Baker J. High-intensity interval training improves fat oxidation during submaximal exercise in active young men. COMPARATIVE EXERCISE PHYSIOLOGY 2022. [DOI: 10.3920/cep210028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This study aimed to examine the effects of four-weeks high-intensity interval training (HIIT) on fat oxidation responses during submaximal exercise in active young men. For this purpose, 20 active young men (who participated in the exercise three times per week) were divided into two groups, including a training group (age: 19.3±0.48 years, V̇O2peak 2.9±0.35 l/min, n=10) and a control group (age: 19.7±0.67 years, V̇O2peak 2.7±0.26 l/min, n=10). The training group performed high-intensity interval training for three sessions per week. Specifically, each session included 8-11 intensive cycling efforts comprising of 60 s duration. A 75 s low pedalling rate (30 W) was used as an active recovery between the intervals. Furthermore, a V̇O2peak test was performed prior to, at the end of two weeks and after the training period. Also, a 60 min constant cycling protocol was performed at ~60% V̇O2peak, in addition to the V̇O2peak test, before and after the training protocol. To assess plasma free fatty acids and glucose, blood samples were taken during a 60-min aerobic exercise prior to and following the training period. An increase (17.8%) in V̇O2peak was observed for the HIIT group after the training period compared to the control group (P<0.05). The HIIT group performed the 60 min sub-maximal exercise test at a lower percentage of V̇O2peak, and decreases in the respiratory exchange ratio were greater in the HIIT group than in the control group (P<0.05). Compared to the pre-test values and control group results, the HIIT group used less carbohydrate and more lipid oxidation during submaximal exercise (P<0.05). The present study’s results indicate that short-term low volume HIIT can increase aerobic capacity and fat oxidation during submaximal exercise.
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Affiliation(s)
- A. Ahmadi
- Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Kharazmi University, Mirdamad Street, 1544733111 Tehran, Iran
| | - H. Rajabi
- Department of Exercise physiology, Faculty of Physical Education and Sport Sciences, Kharazmi University, Mirdamad Street, 1544733111 Tehran, Iran
| | - J.S. Baker
- Centre for Health and Exercise Science Research, Department of Sport, Physical Education and Health, Hong Kong Baptist University, Hong Kong, China P.R
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Negro M, Cerullo G, Parimbelli M, Ravazzani A, Feletti F, Berardinelli A, Cena H, D'Antona G. Exercise, Nutrition, and Supplements in the Muscle Carnitine Palmitoyl-Transferase II Deficiency: New Theoretical Bases for Potential Applications. Front Physiol 2021; 12:704290. [PMID: 34408664 PMCID: PMC8365340 DOI: 10.3389/fphys.2021.704290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Accepted: 07/05/2021] [Indexed: 02/06/2023] Open
Abstract
Carnitine palmitoyltransferase II (CPTII) deficiency is the most frequent inherited disorder regarding muscle fatty acid metabolism, resulting in a reduced mitochondrial long-chain fatty acid oxidation during endurance exercise. This condition leads to a clinical syndrome characterized by muscle fatigue and/or muscle pain with a variable annual frequency of severe rhabdomyolytic episodes. While since the CPTII deficiency discovery remarkable scientific advancements have been reached in genetic analysis, pathophysiology and diagnoses, the same cannot be said for the methods of treatments. The current recommendations remain those of following a carbohydrates-rich diet with a limited fats intake and reducing, even excluding, physical activity, without, however, taking into account the long-term consequences of this approach. Suggestions to use carnitine and medium chain triglycerides remain controversial; conversely, other potential dietary supplements able to sustain muscle metabolism and recovery from exercise have never been taken into consideration. The aim of this review is to clarify biochemical mechanisms related to nutrition and physiological aspects of muscle metabolism related to exercise in order to propose new theoretical bases of treatment which, if properly tested and validated by future trials, could be applied to improve the quality of life of these patients.
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Affiliation(s)
- Massimo Negro
- Centro di Ricerca Interdipartimentale nelle Attivitá Motorie e Sportive (CRIAMS) - Sport Medicine Centre, University of Pavia, Voghera, Italy
| | - Giuseppe Cerullo
- Department of Movement Sciences and Wellbeing, University of Naples Parthenope, Naples, Italy
| | - Mauro Parimbelli
- Centro di Ricerca Interdipartimentale nelle Attivitá Motorie e Sportive (CRIAMS) - Sport Medicine Centre, University of Pavia, Voghera, Italy
| | - Alberto Ravazzani
- Centro di Ricerca Interdipartimentale nelle Attivitá Motorie e Sportive (CRIAMS) - Sport Medicine Centre, University of Pavia, Voghera, Italy
| | - Fausto Feletti
- Department of Internal Medicine, University of Pavia, Pavia, Italy
| | | | - Hellas Cena
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, Pavia, Italy.,Clinical Nutrition and Dietetics Service, Unit of Internal Medicine and Endocrinology, ICS Maugeri IRCCS, University of Pavia, Pavia, Italy
| | - Giuseppe D'Antona
- Centro di Ricerca Interdipartimentale nelle Attivitá Motorie e Sportive (CRIAMS) - Sport Medicine Centre, University of Pavia, Voghera, Italy.,Department of Public Health, Experimental and Forensic Medicine, University of Pavia, Pavia, Italy
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Atashak S, Stannard SR, Daraei A, Soltani M, Saeidi A, Moradi F, Laher I, Hackney AC, Zouhal H. High-Intensity Interval Training Improves Lipocalin-2 and Omentin-1 Levels in Men with Obesity. Int J Sports Med 2021; 43:328-335. [PMID: 34320659 DOI: 10.1055/a-1560-5401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
We investigated the effects of 12 weeks of high-intensity interval training (HIIT) on selected circulating adipokines and other cardiovascular diseases risks factors in men with obesity. Thirty men with obesity (age: 24.96 ± 3.11 year, BMI: 30.92 ± 1.04 kg/m2) were randomly assigned to HIIT and control groups. The HIIT group participated in a 12-week HIIT program (5×2 min interval bout at an intensity of 85-95% HRmax interspersed by 1 min passive recovery, three times per week), while the control group maintained their usual lifestyles. Blood lipids, insulin resistance, and select serum adipokines were assessed before and after 12 weeks of the intervention period. HIIT improved body composition and lipid profiles (p<0.05) and also decreased fasting insulin levels (p=0.001) and HOMA-IR (p=0.002) levels. Furthermore, HIIT increased levels of lipocalin-2 (p=0.002) while decreasing omentin-1 levels (p=0.001) in men with obesity. Changes in lcn2 and omentin-1 concentrations correlated with the changes in risk factors in the HIIT group (p<0.05). The results indicate that 12 weeks of supervised HIIT significantly improves both circulating concentrations of lcn2 and omentin-1, two recently described adipokines, and risk markers of cardiovascular diseases in men with obesity. Further research is necessary to understand the molecular mechanisms involved with these changes.
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Affiliation(s)
- Sirvan Atashak
- Department of Exercise Physiology, Mahabad Branch, Islamic Azad University, Mahabad, Iran, Department of Exercise Physiology, Mahabad Branch, Islamic Azad University, Mahabad, Iran, Mahabad, Iran (the Islamic Republic of)
| | - Stephen R Stannard
- School of Sport and Exercise, Massey University, New Zealand., School of Sport and Exercise, Massey University, New Zealand., Massey, New Zealand
| | - Ali Daraei
- Department of Biological Sciences in Sport,, 1. Department of Biological Sciences in Sport, Faculty of Sports Sciences and Health, Shahid Beheshti University, Tehran, Iran., Tehran, Iran (the Islamic Republic of)
| | - Mohammad Soltani
- Department of Biological Sciences in Sport, Faculty of Sports Sciences and Health, Shahid Beheshti University, Tehran, Iran., Department of Biological Sciences in Sport, Faculty of Sports Sciences and Health, Shahid Beheshti University, Tehran, Iran., Tehran, Iran (the Islamic Republic of)
| | - Ayoub Saeidi
- Exercise Biochemistry Division, Exercise Biochemistry Division, Faculty of Physical Education and Sport Science, University of Mazandaran, Babolsar, Iran, Babolsar, Iran (the Islamic Republic of)
| | - Fatah Moradi
- Department of Exercise Physiology, Saghez Branch, Islamic Azad University, Saghez, Iran, Department of Exercise Physiology, Saghez Branch, Islamic Azad University, Saghez, Iran, Saghez, Iran (the Islamic Republic of)
| | - Ismail Laher
- Department of Anesthesiology, Pharmacology and Therapeutics, The University of British Columbia, Vancouver, Canada., Department of Anesthesiology, Pharmacology and Therapeutics, The University of British Columbia, Vancouver, Canada., Vancouver, Canada
| | | | - Hassane Zouhal
- UFR APS, laboratoire Mouvement Sport Sante, Rennes, France
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10
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Atakan MM, Güzel Y, Bulut S, Koşar ŞN, McConell GK, Turnagöl HH. Six high-intensity interval training sessions over 5 days increases maximal oxygen uptake, endurance capacity, and sub-maximal exercise fat oxidation as much as 6 high-intensity interval training sessions over 2 weeks. JOURNAL OF SPORT AND HEALTH SCIENCE 2021; 10:478-487. [PMID: 32565243 PMCID: PMC8343121 DOI: 10.1016/j.jshs.2020.06.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/23/2020] [Accepted: 05/16/2020] [Indexed: 05/11/2023]
Abstract
BACKGROUND High-intensity interval training (HIIT) induces similar or even superior adaptations compared to continuous endurance training. Indeed, just 6 HIIT sessions over 2 weeks significantly improves maximal oxygen uptake (VO2max), submaximal exercise fat oxidation, and endurance performance. Whether even faster adaptations can be achieved with HIIT is not known. Thus, we aimed to determine whether 2 sessions of HIIT per day, separated by 3 h, every other day for 5 days (double HIIT (HIIT-D), n = 15) could increase VO2max, submaximal exercise fat oxidation, and endurance capacity as effectively as 6 sessions of HIIT over 2 weeks (single HIIT (HIIT-S), n = 13). METHODS Each training session consisted of 10 × 60 s of cycling at 100% of VO2max interspersed with 75 s of low-intensity cycling at 60 watt (W). Pre- and post-training assessments included VO2max, time to exhaustion at ∼80% of VO2max, and 60-min cycling trials at ∼67% of VO2max. RESULTS Similar increases (p < 0.05) in VO2max (HIIT-D: 7.7% vs. HIIT-S: 6.0%, p > 0.05) and endurance capacity (HIIT-D: 80.1% vs. HIIT-S: 79.2%, p > 0.05) were observed. Submaximal exercise carbohydrate oxidation was reduced in the 2 groups after exercise training (HIIT-D: 9.2%, p = 0.014 vs. HIIT-S: 18.8%, p = 0.012) while submaximal exercise fat oxidation was significantly increased in HIIT-D (15.5%, p = 0.048) but not in HIIT-S (9.3%, p = 0.290). CONCLUSION Six HIIT sessions over 5 days was as effective in increasing VO2max and endurance capacity and was more effective in improving submaximal exercise fat oxidation than 6 HIIT sessions over 2 weeks.
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Affiliation(s)
- Muhammed M Atakan
- Division of Nutrition and Metabolism in Exercise, Faculty of Sport Sciences, Hacettepe University, Ankara 06690, Turkey; Institute for Health and Sport, Victoria University, Melbourne, VIA 3011, Australia
| | - Yasemin Güzel
- Division of Nutrition and Metabolism in Exercise, Faculty of Sport Sciences, Hacettepe University, Ankara 06690, Turkey
| | - Süleyman Bulut
- Division of Nutrition and Metabolism in Exercise, Faculty of Sport Sciences, Hacettepe University, Ankara 06690, Turkey
| | - Şükran N Koşar
- Division of Nutrition and Metabolism in Exercise, Faculty of Sport Sciences, Hacettepe University, Ankara 06690, Turkey
| | - Glenn K McConell
- Institute for Health and Sport, Victoria University, Melbourne, VIA 3011, Australia.
| | - Hüseyin H Turnagöl
- Division of Nutrition and Metabolism in Exercise, Faculty of Sport Sciences, Hacettepe University, Ankara 06690, Turkey.
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11
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Colpitts BH, Seaman K, Eadie AL, Brunt KR, Bouchard DR, Sénéchal M. Effects of sprint interval training on substrate oxidation in adults living with and without obesity: The i-FLEX study. Physiol Rep 2021; 9:e14916. [PMID: 34110721 PMCID: PMC8191399 DOI: 10.14814/phy2.14916] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/10/2021] [Accepted: 05/12/2021] [Indexed: 01/06/2023] Open
Abstract
Metabolic flexibility is the ability to adapt substrate oxidation according to metabolic demand. Exercise increases fat oxidation responses in individuals living with obesity; however, limited research exists on the relationship between substrate oxidation and insulin sensitivity after sprint interval training (SIT). The primary objective was to investigate changes in substrate oxidation at rest and during submaximal exercise, and in insulin sensitivity after 4 weeks of SIT in individuals living with or without obesity. The secondary objective was to investigate correlations between changes in substrate oxidation and insulin sensitivity following SIT. Adults living with obesity (n = 16, body mass index (BMI) = 34.1 kg/m2 ± 3.8) and without obesity (n = 18, BMI = 22.9 kg/m2 ± 1.6) took part in a 4-week SIT intervention. Participants completed three sessions of SIT per week, consisting of repeated sets of a 30-s Wingate separated by 4 m of active recovery. Substrate oxidation at rest and during submaximal exercise was measured using VCO2 /VO2 . Insulin sensitivity was calculated using the Matsuda index. No difference in substrate oxidation at rest was observed for either group (p > 0.05), while a significant increase in fat oxidation was observed in individuals living with obesity [F(1,31) = 14.55, p = 0.001] during the submaximal exercise test. A significant decrease in insulin sensitivity was observed among individuals without obesity [F(1,31) = 5.010, p = 0.033]. No correlations were observed between changes in substrate oxidation and insulin sensitivity (p > 0.05). Following SIT, individuals living with obesity increased submaximal fat oxidation compared to individuals without obesity. No correlations were observed between substrate oxidation and insulin sensitivity. Thus, SIT impacts fat oxidation during exercise in individuals living with obesity while having no such influence on insulin sensitivity.
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Affiliation(s)
- Benjamin H. Colpitts
- Cardiometabolic Exercise & Lifestyle LaboratoryFrederictonCanada
- Faculty of KinesiologyUniversity of New BrunswickFrederictonCanada
| | - Ken Seaman
- Faculty of KinesiologyUniversity of New BrunswickFrederictonCanada
| | - Ashley L. Eadie
- Department of PharmacologyDalhousie Medicine New BrunswickSaint JohnCanada
- IMPART investigator team Canada
| | - Keith R. Brunt
- Department of PharmacologyDalhousie Medicine New BrunswickSaint JohnCanada
- IMPART investigator team Canada
| | - Danielle R. Bouchard
- Cardiometabolic Exercise & Lifestyle LaboratoryFrederictonCanada
- Faculty of KinesiologyUniversity of New BrunswickFrederictonCanada
- IMPART investigator team Canada
| | - Martin Sénéchal
- Cardiometabolic Exercise & Lifestyle LaboratoryFrederictonCanada
- Faculty of KinesiologyUniversity of New BrunswickFrederictonCanada
- IMPART investigator team Canada
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12
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Horner KM, Byrne NM, King NA. Effect of Combined Interval and Continuous Exercise Training on Gastric Emptying, Appetite, and Adaptive Responses in Men With Overweight and Obesity. Front Nutr 2021; 8:654902. [PMID: 34124120 PMCID: PMC8192796 DOI: 10.3389/fnut.2021.654902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 04/26/2021] [Indexed: 12/30/2022] Open
Abstract
Background/Objectives: Characterizing compensatory and adaptive responses to exercise assists in understanding changes in energy balance and health outcomes with exercise interventions. This study investigated the effects of a short-term exercise intervention (combining high intensity interval (HII) and continuous exercise) on (1) gastric emptying, appetite and energy intake; and (2) other adaptive responses including cardiorespiratory fitness, in inactive men with overweight/obesity. Methods: Fifteen men (BMI: 29.7 ± 3.3 kg/m-2) completed a 4-wk supervised exercise intervention, consisting of 5 exercise sessions per week alternating between HII (30 s at 100% VO2max followed by 30 s recovery) and continuous (at 50% VO2max) training on a cycle ergometer, progressing from 30 to 45 min session duration. Gastric emptying (13C-octanoic acid breath test), appetite (visual analog scale), energy intake (ad libitum lunch meal), body composition (air displacement plethysmography), non-exercise activity (accelerometery) VO2max, blood pressure, and fasting concentrations of glucose, insulin, and ghrelin were measured before and after (≥48 h) the intervention. Results: Gastric emptying, glucose, insulin and ghrelin were unchanged, but energy intake at the ad libitum lunch test meal significantly increased at post-intervention (+171 ± 116 kcal, p < 0.01). Body weight (-0.9 ± 1.1 kg), waist circumference (-2.3 ± 3.5 cm) and percent body fat (-0.9 ± 1.1%) were modestly reduced (P < 0.05). VO2max increased (+4.4 ± 2.1 ml.kg.min-1) by 13% and systolic (-6.2 ± 8.4 mmHg) and diastolic (-5.8 ± 2.2 mmHg) blood pressure were significantly reduced (P ≤ 0.01 for all). Conclusions: Four weeks of exercise training did not alter gastric emptying, indicating gastric emptying may only adapt to a higher volume/longer duration of exercise or changes in other characteristics associated with regular exercise. The combination of HII and continuous exercise training had beneficial effects on body composition, cardiorespiratory fitness, and blood pressure and warrants further investigation in larger randomized controlled trials.
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Affiliation(s)
- Katy M. Horner
- School of Public Health, Physiotherapy and Sport Sciences, Institute for Sport and Health and Institute of Food and Health, University College Dublin, Dublin, Ireland
- School of Exercise and Nutrition Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
| | - Nuala M. Byrne
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Neil A. King
- School of Exercise and Nutrition Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
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13
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Astorino TA, De Revere JL. Effect of Ethnicity on Changes in Fat and Carbohydrate Oxidation in Response to Short-Term High Intensity Interval Training (HIIT): A Pilot Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18084314. [PMID: 33921694 PMCID: PMC8072605 DOI: 10.3390/ijerph18084314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 03/31/2021] [Accepted: 04/09/2021] [Indexed: 12/24/2022]
Abstract
This study compared changes in substrate metabolism with high intensity interval training (HIIT) in women of different ethnicities. Twelve Caucasian (C) and ten Hispanic women (H) (age = 24 ± 5 yr) who were inactive completed nine sessions of HIIT at 85 percent peak power output (%PPO). Pre-training, changes in fat oxidation (FOx) and carbohydrate oxidation (CHOOx) during progressive cycling were measured on two days to compute the minimum difference (MD). This test was repeated after the last training session. Between baseline tests, estimates of FOx and CHOOx were not different (p > 0.05) and were highly related (intraclass correlation coefficient equal to 0.72 to 0.88), although the coefficient of variation of maximal fat oxidation (MFO) was equal to 30%. Training significantly increased MFO (p = 0.03) in C (0.19 ± 0.06 g/min to 0.21 ± 0.06 g/min, d = 0.66) and H (0.16 ± 0.03 g/min to 0.19 ± 0.03 g/min, d = 1.3) that was similar (p = 0.92) between groups. There was a significant interaction for FOx (p = 0.003) as it was only increased in H versus C, although both groups exhibited reduced CHO oxidation (p = 0.002) with training. Use of MD revealed that only 3 of 22 women show meaningful increases in MFO (>0.08 g/min). The preliminary data reveals that a small dose of low-volume HIIT does not alter fat and CHO oxidation and there is little effect of ethnicity on the response to training.
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14
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Keyhani D, Tartibian B, Dabiri A, Teixeira AMB. Effect of High-Intensity Interval Training Versus Moderate-Intensity Aerobic Continuous Training on Galectin-3 Gene Expression in Postmenopausal Women: A Randomized Controlled Trial. J Aging Phys Act 2020; 28:987-995. [PMID: 32679568 DOI: 10.1123/japa.2019-0213] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 04/06/2020] [Accepted: 04/17/2020] [Indexed: 11/18/2022]
Abstract
Galectin-3 is a pro-inflammatory biomarker associated with the pathogenesis of heart failure (HF). Physical-activity reduces the risk of heart-failure by modification of inflammation and fibrosis. The purpose of this study was to compare the effects of 8 weeks of high-intensity interval training (HIIT) versus moderate-intensity aerobic continuous training on a predictive factor of HF in postmenopausal women. Thirty sedentary postmenopausal women were randomly assigned to three groups. The first group performed the HIIT program at 60%-90%, and the second group performed an exercise program at 50%-65% of HR reserve. The control group maintained their normal daily regular physical activity level. The gene expressions of galectin-3 and lipid profiles were measured at the baseline and the end of Week 8. The HIIT and moderate-intensity aerobic continuous training attenuated the gene expression of galectin-3, serum low-density lipoprotein, cholesterol, and triglyceride concentrations and enhanced high-density lipoprotein concentrations. These changes were considerably higher in the HIIT group. Our results show that HIIT is superior to moderate-intensity aerobic continuous training in improving the decrease in HF risk in postmenopausal women.
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15
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Zouhal H, Ben Abderrahman A, Khodamoradi A, Saeidi A, Jayavel A, Hackney AC, Laher I, Algotar AM, Jabbour G. Effects of physical training on anthropometrics, physical and physiological capacities in individuals with obesity: A systematic review. Obes Rev 2020; 21:e13039. [PMID: 32383553 DOI: 10.1111/obr.13039] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/07/2020] [Accepted: 04/07/2020] [Indexed: 12/11/2022]
Abstract
Increasing the amount of physical activity is an important strategy for weight loss. This systematic review summarizes recent findings on the effects of physical training on anthropometric characteristics, physical performances and physiological capacities in individuals with overweight and obesity. A systematic literature search strategy was conducted from inception until June 2019 using four electronic databases that identified 2,708 records. After screening for titles, abstracts and full texts, 116 studies were included in our final analysis. Both aerobic (e.g., endurance training) and anaerobic training (e.g., high-intensity training, resistance training) improved body composition and physical fitness indicators in adults, adolescents and children with obesity (effect size: 0.08 < d < 2.67, trivial to very large). This systematic review suggests that both low- and high-intensity training significantly reduced body weight and fat mass while increasing fat-free mass in individuals with obesity (effect size: 0.04 <d <3.2, trivial to very large). A significant increase in VO2max also occurs in individuals with obesity in response to aerobic training or high-intensity interval training (effect size: 0.13 < d < 6.24, trivial to very large). Further studies are needed to define the optimal combination of training intensity and duration needed to produce the most efficacious results in individuals with obesity.
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Affiliation(s)
- Hassane Zouhal
- Department of Sport Sciences, University of Rennes, M2S (Laboratoire Mouvement, Sport, Santé), Rennes, France
| | | | - Arash Khodamoradi
- Young Researchers and Elite Club, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Ayoub Saeidi
- Department of Physical Education, Damghan Branch, Islamic Azad University, Damghan, Iran
| | - Ayyappan Jayavel
- SRM College of Physiotherapy, SRM Institute of Science and Technology, Kattankulathur Chengalpattu (DT), India
| | - Anthony C Hackney
- Department of Exercise & Sport Science; Department of Nutrition, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Ismail Laher
- Department of Anesthesiology, Pharmacology& Therapeutics, University of British Columbia, Vancouver, Canada
| | - Amit M Algotar
- Department of Family and Community Medicine, University of Arizona Tucson, Arizona, USA
| | - Georges Jabbour
- Department of Sport Sciences, College of Arts and Sciences, Qatar University, Doha, Qatar
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16
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Murawska-Cialowicz E, Wolanski P, Zuwala-Jagiello J, Feito Y, Petr M, Kokstejn J, Stastny P, Goliński D. Effect of HIIT with Tabata Protocol on Serum Irisin, Physical Performance, and Body Composition in Men. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17103589. [PMID: 32443802 PMCID: PMC7277607 DOI: 10.3390/ijerph17103589] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/15/2020] [Accepted: 05/18/2020] [Indexed: 12/12/2022]
Abstract
High-intensity interval training (HIIT) is frequently utilized as a method to reduce body mass. Its intensity of work results in a number of beneficial adaptive changes in a relatively short period of time. Irisin is a myokine and adipokine secreted to the blood during exercise and it takes part in the regulation of energy metabolism. It is a vital issue from the prophylaxis point of view as well as treatment through exercise of different diseases (e.g., obesity, type-2 diabetes). The aim of this study was to evaluate changes in irisin concentration, body composition, and aerobic and anaerobic performance in men after HIIT. Eight weeks of HIIT following the Tabata protocol was applied in the training group (HT) (n = 15), while a sedentary group (SED) (n = 10) did not participate in fitness activities within the same time period. Changes of irisin, body composition, and aerobic and anaerobic performance were evaluated after graded exercise test (GXT) and Wingate anaerobic test (WAnT) before and after eight weeks of training. Training resulted in an increased of blood irisin concentration (by 29.7%) p < 0.05), VO2max increase (PRE: 44.86 ± 5.74 mL·kg−1·min−1; POST: 50.16 ± 5.80 mL kg−1·min−1; p < 0.05), reduction in percent body fat (PRE: 14.44 ± 3.33%; POST: 13.61 ± 3.16%; p < 0.05), and increase of WAnT parameters (p < 0.05) in the HT group. No changes were observed in the SED group. HIIT resulted in beneficial effects in the increase in blood irisin concentration, physical performance, and reduced fat content. The HIIT may indicate an acceleration of base metabolism. This effect can be utilized in the prevention or treatment of obesity.
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Affiliation(s)
- Eugenia Murawska-Cialowicz
- Department of Physiology and Biochemistry, University School of Physical Education, 51-612 Wroclaw, Poland; (P.W.); (D.G.)
- Correspondence: (E.M.-C.); (P.S.)
| | - Pawel Wolanski
- Department of Physiology and Biochemistry, University School of Physical Education, 51-612 Wroclaw, Poland; (P.W.); (D.G.)
| | | | - Yuri Feito
- Department of Exercise Science and Sport Management, Kennesaw State University, Kennesaw, GA 30144, USA;
| | - Miroslav Petr
- Faculty of Physical Education and Sport, Charles University, 162-52 Prague, Czech Republic; (M.P.); (J.K.)
| | - Jakub Kokstejn
- Faculty of Physical Education and Sport, Charles University, 162-52 Prague, Czech Republic; (M.P.); (J.K.)
| | - Petr Stastny
- Faculty of Physical Education and Sport, Charles University, 162-52 Prague, Czech Republic; (M.P.); (J.K.)
- Correspondence: (E.M.-C.); (P.S.)
| | - Dawid Goliński
- Department of Physiology and Biochemistry, University School of Physical Education, 51-612 Wroclaw, Poland; (P.W.); (D.G.)
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17
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Rauf S, Soesatyo MH, Agustiningsih D, Partadiredja G. Moderate intensity intermittent exercise upregulates neurotrophic and neuroprotective genes expression and inhibits Purkinje cell loss in the cerebellum of ovariectomized rats. Behav Brain Res 2020; 382:112481. [PMID: 31954098 DOI: 10.1016/j.bbr.2020.112481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 01/01/2020] [Accepted: 01/13/2020] [Indexed: 12/23/2022]
Abstract
Decreases in estrogen levels due to menopause or ovariectomy may disrupt cerebellar motor functions. This study aimed at investigating the effects of Moderate Intensity Intermittent Exercise (MIEx) on the cerebellum of ovariectomized rats by analyzing neurotrophic and neuroprotective markers, as well as cerebellar motor functions. Thirty-two female Sprague Dawley rats were divided into four groups, i.e. Sham and ovariectomy (Ovx) of non-MIEx (NMIEx) groups, and Sham and Ovx with MIEx groups. MIEx was performed 5 days a week on treadmill for 6 weeks. Motor functions were assessed using rotarod, footprint, open field, and wire hanging tests. Real-time polymerase chain reaction was performed to determine messenger RNA (mRNA) expressions of Pgc-1α, BDNF, synaptophysin, Bcl-2, and Bax. Unbiased stereology was used to estimate the total number of cerebellar Purkinje cells. The Ovx MIEx group had higher Pgc-1α and Bcl-2 mRNA expressions, and number of Purkinje cells, but lower Bax mRNA expression than the Ovx NMIEx group. All motor functions of MIEx groups were better than the Sham and Ovx groups without MIEx. Motor functions on rotarod task, OFT, and FPT correlated significantly with the mRNAs expression of Bcl-2, Bax, BDNF, synaptophysin, Pgc-1α, and the number of cerebellar Purkinje cells in ovariectomized rats. MIEx improves cerebellar neurotrophic and neuroprotective markers, as well as motor functions of ovariectomized rats.
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Affiliation(s)
- Saidah Rauf
- Doctoral Program, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia; Masohi Nursing Study Program, Maluku Health Polytechnic, Maluku, Indonesia.
| | - Marsetyawan Hne Soesatyo
- Department of Histology and Cell Biology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Denny Agustiningsih
- Department of Physiology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Ginus Partadiredja
- Department of Physiology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
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18
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Keytsman C, Hansen D, Wens I, Eijnde BO. Exercise-induced lactate responses in Multiple Sclerosis: A retrospective analysis. NeuroRehabilitation 2019; 45:99-106. [PMID: 31403957 DOI: 10.3233/nre-192740] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Persons with Multiple Sclerosis have elevated resting serum lactate concentrations compared to healthy controls (HC). OBJECTIVE To evaluate lactate concentrations during acute exercise and/or following training in MS compared to HC. METHODS In this retrospective study, blood lactate concentrations (mmol/l) originating from two previous studies were analyzed. Lactate concentrations originated from acute submaximal (MSsubmax; HC, n = 11; MS, n = 32) or maximal (MSmax; HC, n = 20; MS, n = 24) exercise tests and following a 24-week mild to moderate intensity (MSsubmax, n = 12) or 12-week high intensity interval (MSmax, n = 13) exercise intervention. RESULTS Under submaximal conditions in MS and compared to HC, lactaterest (MS: 2.7±0.6 vs HC: 2.3±0.7 was significantly (p < 0.05) elevated. After 24 weeks of mild-to-moderate-intensity exercise training and compared to PRE-values, lactatebout2 (2.5±0.7 vs 3.4±1.1) significantly (p < 0.05) decreased during submaximal testing in MSsubmax. Under maximal conditions, lactatestart (2.3±1.0 vs 1.7±0.9) was significantly (p > 0.05) elevated in MS. Twelve weeks of high intensity interval training did not improve this (p > 0.05). CONCLUSIONS Under the conditions of this retrospective analysis we conclude that lactate concentrations during acute submaximal and maximal exercise in persons with MS are similar compared to healthy controls. Moderate intensity exercise therapy appeared to improve lactate accumulation but high intensity exercise therapy did not.
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Affiliation(s)
- Charly Keytsman
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Diepenbeek, Belgium
| | - Dominique Hansen
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Diepenbeek, Belgium
| | - Inez Wens
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Diepenbeek, Belgium
| | - Bert O Eijnde
- ADLON - Sportsmedical Center, BIOMED Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
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19
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Gaitán JM, Eichner NZM, Gilbertson NM, Heiston EM, Weltman A, Malin SK. Two Weeks of Interval Training Enhances Fat Oxidation during Exercise in Obese Adults with Prediabetes. J Sports Sci Med 2019; 18:636-644. [PMID: 31827347 PMCID: PMC6873115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 08/02/2019] [Indexed: 06/10/2023]
Abstract
Prediabetes is associated with impaired oxidative capacity and altered substrate utilization during exercise. The effects of continuous (CONT) versus interval (INT) exercise training on fat oxidation during an acute exercise bout at the same absolute and relative intensities are unknown in this population. Obese females/males (n = 17, n = 5) with prediabetes (BMI 32.2 ± 1.2 kg·m-2; age 62.8 ± 1.6 y; fasting glucose 103.4 ± 1.6 mg·dL-1; 2-hour glucose 153.7 ± 7.1 mg·dL-1; VO2peak 19.9 ± 1.0 mL·kg-1·min-1) were screened with a 75g OGTT. Subjects completed a peak oxygen consumption test and a submaximal exercise substrate utilization test consisting of 5min stages at absolute (30W) and relative (70%HRpeak) intensities before and after randomization to 12 sessions (60min each) of CONT (70% HRpeak) or INT (alternating 3min 90% HRpeak, 3min 50% HRpeak) over a two-week period. Body mass decreased and VO2peak increased more after INT than CONT (INT: -0.6 ± 0.2 kg, CONT: -0.1 ± 0.2 kg; p = 0.04; INT: 1.9 ± 0.6 mL/kg/min, CONT: 0.1 ± 0.6 mL·kg-1·min-1; p = 0.04). Training increased fat oxidation by 0.7 ± 0.2 mL·kg-1·min-1 during the absolute intensity test (p < 0.001), independent of intensity. During the relative intensity test, fat oxidation increased more after INT than CONT (INT: 1.3 ± 0.4 mL·kg-1·min-1, CONT: 0.3 ± 0.3 mL·kg-1·min-1; p = 0.03), with no difference in exercise energy expenditure between groups. Enhanced fat oxidation during the relative test was correlated with increased VO2peak (r = 0.53 p = 0.01). High intensity INT training enhances fat oxidation during the same relative intensity exercise in people with prediabetes.
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Affiliation(s)
- Julian M Gaitán
- Department of Kinesiology, University of Virginia, Charlottesville, USA
| | | | | | - Emily M Heiston
- Department of Kinesiology, University of Virginia, Charlottesville, USA
| | - Arthur Weltman
- Department of Kinesiology, University of Virginia, Charlottesville, USA
- Division of Endocrinology and Metabolism, University of Virginia, Charlottesville, USA
| | - Steven K Malin
- Department of Kinesiology, University of Virginia, Charlottesville, USA
- Division of Endocrinology and Metabolism, University of Virginia, Charlottesville, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, USA
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20
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de Sousa MV, Fukui R, Dagogo-Jack S, Krustrup P, Zouhal H, da Silva MER. Biomarkers of insulin action during single soccer sessions before and after a 12-week training period in type 2 diabetes patients on a caloric-restricted diet. Physiol Behav 2019; 209:112618. [PMID: 31323295 DOI: 10.1016/j.physbeh.2019.112618] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 06/28/2019] [Accepted: 07/15/2019] [Indexed: 01/18/2023]
Abstract
BACKGROUND We investigated the biomarkers of insulin action as well as changes in free fatty acids and lactate concentration after an acute soccer session pre and post training with caloric-restricted diet versus diet alone in type 2 diabetes (T2D) patients. METHODS Fifty-one middle-aged (61.1 ± 6.4 years) T2D patients were randomly allocated to the soccer+diet group (SDG) or the diet group (DG). The control group comprised T2D patients observing a caloric-restricted diet who did not receive soccer training. Over 12 weeks, SDG performed 3 × 40 min per week of soccer training. RESULTS The first soccer session for SDG induced acute increases in blood lactate (1.4 ± 0.1-6.0 ± 0.7 mmol/l, P < 0.05) and glucagon levels (112.1 ± 6.2-142.9 ± 8.0 pg/ml, P < 0.05), whereas glucose and insulin levels remained unchanged. Moreover, this session showed suppressed insulin levels as well as higher free fatty acids, lactate levels and glucagon/insulin ratio compared to DG (p < 0.05). After 12 weeks, a baseline decrease was observed in glucagon, leptin and lactate levels in SDG and DG (p < 0.05), whereas HOMA-IR, Adipo-IR and glucose levels were lower only in SDG (p < 0.05). At the last soccer training session, the blood lactate response was significantly lower than for the first session (4.0 ± 0.4 vs 6.0 ± 0.7 mmol/l). At 48 h pre intervention, a decrease was observed in leptin levels (p < 0.05), which remained lower post intervention. The positive correlation between leptin and insulin, and the lower levels after training, could be attributed to the improved insulin sensitivity along with the weight loss observed in both groups (~3.4 kg for DG and 3.7 kg for SDG). CONCLUSION Acute soccer sessions markedly improved insulin action markers in T2D patients, while the cumulative effects enhanced insulin sensitivity and decreased risk factors associated with cardiovascular disease after 12 weeks of intervention better than caloric-restricted diet.
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Affiliation(s)
- Maysa V de Sousa
- Laboratory of Medical Investigation, LIM-18, Endocrinology Division, School of Medicine, University of São Paulo, Sao Paulo, Brazil.
| | - Rosa Fukui
- Laboratory of Medical Investigation, LIM-18, Endocrinology Division, School of Medicine, University of São Paulo, Sao Paulo, Brazil
| | - Samuel Dagogo-Jack
- Division of Endocrinology, Diabetes, and Metabolism, University of Tennessee, 38163 Memphis, TN, USA
| | - Peter Krustrup
- Department of Sports Science and Clinical Biomechanics, SDU Sport and Health Sciences Cluster (SHSC), University of Southern Denmark, Odense, Denmark
| | - Hassane Zouhal
- Movement, Sport and Health Sciences Laboratory (M2S), UFR-STAPS, University of Rennes 2-ENS, Rennes, France
| | - Maria Elizabeth R da Silva
- Laboratory of Medical Investigation, LIM-18, Endocrinology Division, School of Medicine, University of São Paulo, Sao Paulo, Brazil
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Jung WS, Hwang H, Kim J, Park HY, Lim K. Comparison of excess post-exercise oxygen consumption of different exercises in normal weight obesity women. J Exerc Nutrition Biochem 2019; 23:22-27. [PMID: 31337202 PMCID: PMC6651661 DOI: 10.20463/jenb.2019.0013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 06/27/2019] [Indexed: 11/22/2022] Open
Abstract
[Purpose] The purpose of this study was to compare the excess post-exercise oxygen consumption (EPOC) between different types of exercises in women with normal weight obesity (NWO). [Methods] Nine university students with NWO having body mass index <25 kg/m2 and body fat percentage >30% participated in the study. First, continuous exercise (CEx) on an ergometer for 30 minutes at 60% of maximal oxygen consumption (VO2max) and interval exercise (IEx) at 80% VO2max for 2 minutes were performed. This was followed by exercise performed at 40% VO2max for 1 minute and at 80% VO2max for 3 minutes, performed 6 times repeatedly for a total of 26 minutes. The accumulation of short duration exercise (AEx) was performed for 3-bouts of 10 minutes each at 60% VO2max. [Results] The major findings were as follows: energy consumption during the exercises showed no significant difference between CEx, IEx, and AEx; EPOC was higher in IEx and AEx as compared to CEx for all dependent variables (e.g. total oxygen consumption, total calorie, summation of heart rate, and EPOC duration); and the lipid profile showed no significant difference. [Conclusion] Our study confirmed that when homogenizing the energy expenditure for various exercises in NWO individuals, EPOC was higher in IEx and AEx than in CEx. Therefore, IEx and AEx can be considered as effective exercise methods for increasing energy expenditure in NWO females.
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Interval Endurance and Resistance Training as Part of a Community-Based Secondary Prevention Program for Patients With Diabetes Mellitus and Coronary Artery Disease. J Cardiopulm Rehabil Prev 2019; 40:17-23. [PMID: 31192806 DOI: 10.1097/hcr.0000000000000426] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE High-intensity interval training (HIIT) has been observed to improve health and fitness in patients with cardiovascular disease. High-intensity interval training may not be appropriate in community-based settings. Moderate-intensity interval training (MIIT) and resistance training (RT) are emerging as effective alternatives to HIIT. These have not been well investigated in a community-based cardiac maintenance program. METHODS Patients with coronary artery disease and/or diabetes mellitus participated in clinical examinations and a 6-mo exercise program. Center-based MIIT and home-based moderate continuous intensity exercise were performed for 3-5 d/wk for 30-40 min/session. RT, nutritional counseling, coping, and behavioral change strategies were offered to all patients. Within-group changes in clinical metrics and exercise performance were assessed on a per-protocol basis after 6 mo. RESULTS Two hundred ninety-two patients (74%) concluded the 6-mo program. There were no serious adverse events. The peak oxygen uptake and peak workload increased significantly, 21.8 ± 6.1 to 22.8 ± 6.3 mL/kg/min and 128 ± 39 to 138 ± 43 W, respectively (both P < .001). Submaximal exercise performance increased from 68 ± 19 to 73 ± 22 W (P < .001). Glycated hemoglobin decreased from 6.57 ± 0.93% to 6.43 ± 0.12%, (P = .023). Daily injected insulin dosage was reduced from 42 IU (interquartile range: 19.0, 60.0) to 26 IU (interquartile range: 0, 40.3, P < .001). CONCLUSIONS MIIT and RT were feasible and effective in a community-based cardiac maintenance program for patients with cardiovascular disease, improving exercise performance, and blood glucose control.
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Rahmati M, Shariatzadeh M, Kazemi A, Taherabadi SJ. High-intensity interval training increasing ADP-ribosylation factor 6 and Cytochrome C in visceral adipose tissue of male Wistar rats. OBESITY MEDICINE 2019. [DOI: 10.1016/j.obmed.2019.100089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Fayh APT, Matos VAF, de Souza DC, dos Santos VOA, da Silva Ramos Marinho C, Serquiz AC, Friedman R, Costa EC. Effects of a single session of high-intensity interval exercise and moderate-intensity continuous exercise on biochemical cardiovascular risk factors in obese males. SPORT SCIENCES FOR HEALTH 2018. [DOI: 10.1007/s11332-018-0435-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Strijcker DD, Lapauw B, Ouwens DM, de Velde DV, Hansen D, Petrovic M, Cuvelier C, Tonoli C, Calders P. High intensity interval training is associated with greater impact on physical fitness, insulin sensitivity and muscle mitochondrial content in males with overweight/obesity, as opposed to continuous endurance training: a randomized controlled trial. JOURNAL OF MUSCULOSKELETAL & NEURONAL INTERACTIONS 2018; 18:215-226. [PMID: 29855444 PMCID: PMC6016496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVES To evaluate the effect of high intensity training (HIT) on physical fitness, basal respiratory exchange ratio (bRER), insulin sensitivity and muscle histology in overweight/obese men compared to continuous aerobic training (CAT). MATERIAL AND METHODS 16 male participants with overweight/obesity (age: 42-57 years, body mass index: 28-36 kg/m2) were randomized to HIT (n=8) or CAT (n=8) for 10 weeks, twice a week. HIT was composed of 10 minutes high intensity, 10 minutes continuous aerobic, 10 minutes high intensity exercises. CAT was composed of three times 10 minutes continuous exercising. Changes in anthropometry, physical and metabolic fitness were evaluated. Muscle histology (mitochondria and lipid content) was evaluated by transmission electron microscopy (TEM). RESULTS HIT showed a significant increase for peak VO2 (P=0.01), for insulin sensitivity (AUC glucose (P<0,001), AUC insulin (P<0,001), OGTT composite score (P=0.007)) and a significant decrease of bRER (P<0.001) compared to CAT. Muscle mitochondrial content was significantly increased after HIT at the subsarcolemmal (P=0.004 number and P=0.001 surface) as well as the intermyofibrillar site (P<0.001 number and P=0.001 surface). CONCLUSION High intensity training elicits stronger beneficial effects on physical fitness, basal RER, insulin sensitivity, and muscle mitochondrial content, as compared to continuous aerobic training.
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Affiliation(s)
| | - Bruno Lapauw
- Ghent University, Department of Internal Medicine, section of Endocrinology
| | - D. Margriet Ouwens
- Ghent University, Department of Internal Medicine, section of Endocrinology,German Diabetes Centre, Institute of Clinical Biochemistry and Pathobiochemistry, German Diabetes Centre
| | | | - Dominique Hansen
- Hasselt University, Department of Rehabilitation Sciences and Physiotherapy
| | - Mirko Petrovic
- Ghent University, Department of Internal Medicine, section of Geriatrics
| | | | - Cajsa Tonoli
- Ghent University, Department of Rehabilitation Sciences and Physiotherapy
| | - Patrick Calders
- Ghent University, Department of Rehabilitation Sciences and Physiotherapy,Corresponding author: Patrick Calders, Rehabilitation Sciences and Physiotherapy, Blok B3, De Pintelaan 185, 9000 Ghent E-mail:
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Maunder E, Plews DJ, Kilding AE. Contextualising Maximal Fat Oxidation During Exercise: Determinants and Normative Values. Front Physiol 2018; 9:599. [PMID: 29875697 PMCID: PMC5974542 DOI: 10.3389/fphys.2018.00599] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 05/03/2018] [Indexed: 12/30/2022] Open
Abstract
Using a short-duration step protocol and continuous indirect calorimetry, whole-body rates of fat and carbohydrate oxidation can be estimated across a range of exercise workloads, along with the individual maximal rate of fat oxidation (MFO) and the exercise intensity at which MFO occurs (Fatmax). These variables appear to have implications both in sport and health contexts. After discussion of the key determinants of MFO and Fatmax that must be considered during laboratory measurement, the present review sought to synthesize existing data in order to contextualize individually measured fat oxidation values. Data collected in homogenous cohorts on cycle ergometers after an overnight fast was synthesized to produce normative values in given subject populations. These normative values might be used to contextualize individual measurements and define research cohorts according their capacity for fat oxidation during exercise. Pertinent directions for future research were identified.
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Affiliation(s)
- Ed Maunder
- Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand
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Ingul CB, Dias KA, Tjonna AE, Follestad T, Hosseini MS, Timilsina AS, Hollekim-Strand SM, Ro TB, Davies PSW, Cain PA, Leong GM, Coombes JS. Effect of High Intensity Interval Training on Cardiac Function in Children with Obesity: A Randomised Controlled Trial. Prog Cardiovasc Dis 2018; 61:214-221. [PMID: 29452134 DOI: 10.1016/j.pcad.2018.01.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 01/31/2018] [Indexed: 01/02/2023]
Abstract
BACKGROUND High intensity interval training (HIIT) confers superior cardiovascular health benefits to moderate intensity continuous training (MICT) in adults and may be efficacious for improving diminished cardiac function in obese children. The aim of this study was to compare the effects of HIIT, MICT and nutrition advice interventions on resting left ventricular (LV) peak systolic tissue velocity (S') in obese children. METHODS Ninety-nine obese children were randomised into one of three 12-week interventions, 1) HIIT [n = 33, 4 × 4 min bouts at 85-95% maximum heart rate (HRmax), 3 times/week] and nutrition advice, 2) MICT [n = 32, 44 min at 60-70% HRmax, 3 times/week] and nutrition advice, and 3) nutrition advice only (nutrition) [n = 34]. RESULTS Twelve weeks of HIIT and MICT were equally efficacious, but superior to nutrition, for normalising resting LV S' in children with obesity (estimated mean difference 1.0 cm/s, 95% confidence interval 0.5 to 1.6 cm/s, P < 0.001; estimated mean difference 0.7 cm/s, 95% confidence interval 0.2 to 1.3 cm/s, P = 0.010, respectively). CONCLUSIONS Twelve weeks of HIIT and MICT were superior to nutrition advice only for improving resting LV systolic function in obese children.
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Affiliation(s)
- Charlotte B Ingul
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway; Helse Midt-Norge RHF, Strandvegen 1, Stjordal, Norway
| | - Katrin A Dias
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Brisbane, QLD, Australia
| | - Arnt E Tjonna
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Turid Follestad
- Department of Public Health and Nursing, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Mansoureh S Hosseini
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Anita S Timilsina
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Siri M Hollekim-Strand
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Torstein B Ro
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway; Department of Pediatrics, St. Olav's University Hospital, Trondheim, Norway
| | - Peter S W Davies
- Children's Nutrition Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Peter A Cain
- Heart Care Partners, The Wesley Hospital, Brisbane, QLD, Australia
| | - Gary M Leong
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia; Department of Paediatric Endocrinology, Lady Cilento Children's Hospital, Brisbane, QLD, Australia
| | - Jeff S Coombes
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Brisbane, QLD, Australia.
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Changes in fat oxidation in response to various regimes of high intensity interval training (HIIT). Eur J Appl Physiol 2017; 118:51-63. [PMID: 29124325 DOI: 10.1007/s00421-017-3756-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 10/28/2017] [Indexed: 02/08/2023]
Abstract
Increased whole-body fat oxidation (FOx) has been consistently demonstrated in response to moderate intensity continuous exercise training. Completion of high intensity interval training (HIIT) and its more intense form, sprint interval training (SIT), has also been reported to increase FOx in different populations. An explanation for this increase in FOx is primarily peripheral adaptations via improvements in mitochondrial content and function. However, studies examining changes in FOx are less common in response to HIIT or SIT than those determining increases in maximal oxygen uptake which is concerning, considering that FOx has been identified as a predictor of weight gain and glycemic control. In this review, we explored physiological and methodological issues underpinning existing literature concerning changes in FOx in response to HIIT and SIT. Our results show that completion of interval training increases FOx in approximately 50% of studies, with the frequency of increased FOx higher in response to studies using HIIT compared to SIT. Significant increases in β-HAD, citrate synthase, fatty acid binding protein, or FAT/CD36 are likely responsible for the greater FOx seen in these studies. We encourage scientists to adopt strict methodological procedures to attenuate day-to-day variability in FOx, which is dramatic, and develop standardized procedures for assessing FOx, which may improve detection of changes in FOx in response to HIIT.
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Effects of high-intensity interval training on body composition, aerobic and anaerobic performance and plasma lipids in overweight/obese and normal-weight young men. Biol Sport 2017; 34:385-392. [PMID: 29472742 PMCID: PMC5819474 DOI: 10.5114/biolsport.2017.69827] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 05/05/2017] [Accepted: 05/05/2017] [Indexed: 11/30/2022] Open
Abstract
To examine the effects of short high-intensity interval training (HIIT) on body composition, physical performance and plasma lipids in overweight/obese compared to normal-weight young men. Nine overweight/obese and nine normal-weight men (control group) aged 17 to 20 years underwent a HIIT programme three times per week for eight weeks. Body composition, indices of aerobic [maximal aerobic velocity (MAV) and maximal oxygen uptake (VO2max)] and anaerobic [squat jump (SJ), counter-movement jump (CMJ), five-jump test (FJT), 10-m and 30-m sprint] performances, as well as fasting plasma lipids, were assessed in the two groups at PRE and POST HIIT. The HIIT programme resulted in significant reductions in body mass (-1.62%, P=0.016, ES=0.11) and fat mass (-1.59%, P=0.021, ES=0.23) in obese, but not in normal-weight subjects. MAV (+5.55%, P=0.005, ES=0.60 and +2.96%, P=0.009, ES=0.82), VO2max (+5.27%, P=0.006, ES=0.63 and +2.88%, P=0.009, ES=0.41), FJT (+3.63%, P=0.005, ES=0.28 and +2.94%, P=0.009, ES=0.52), SJ (+4.92%, P=0.009, ES=0.25 and +6.94%, P=0.009, ES=0.70) and CMJ (+6.84%, P=0.014, ES=0.30 and +6.69%, P=0.002, ES=0.64) significantly increased in overweight/obese and normal-weight groups, respectively. 30-m sprint time significantly decreased in both groups (-1.77%, P=0.038, ES=0.12 and -0.72%, P=0.030, ES=0.16). Plasma total cholesterol (-11.8%, P=0.026, ES=0.96), LDL cholesterol (-11.9%, P=0.050, ES=0.77) and triglycerides (-21.3%, P=0.023, ES=1.08) significantly decreased in the obese group, but not in the normal-weight group. The eight-week HIIT programme resulted in a slight improvement in physical fitness and a significant decrease in plasma lipids in the obese. Short duration HIIT may contribute to an improved cardiometabolic profile in the obese.
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Jiménez-Pavón D, Lavie CJ. Response: Commentary: High-intensity Intermittent Training vs. Moderate-intensity Intermittent Training: Is It a Matter of Intensity or Intermittent Efforts? Front Physiol 2017; 8:526. [PMID: 28785227 PMCID: PMC5519562 DOI: 10.3389/fphys.2017.00526] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 07/07/2017] [Indexed: 12/02/2022] Open
Affiliation(s)
- David Jiménez-Pavón
- Galeno Research Group, Department of Physical Education, Faculty of Education Sciences, University of CádizCádiz, Spain
| | - Carl J Lavie
- Department of Cardiovascular Diseases, John Ochsner Heart and Vascular Institute, Ochsner Clinical School, Medicine Program, The University of QueenslandNew Orleans, LA, United States
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Gentil P, Del Vecchio FB. Commentary: High-intensity Intermittent Training vs. Moderate-intensity Intermittent Training: Is It a Matter of Intensity or Intermittent Efforts? Front Physiol 2017; 8:370. [PMID: 28611688 PMCID: PMC5447727 DOI: 10.3389/fphys.2017.00370] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 05/18/2017] [Indexed: 01/10/2023] Open
Affiliation(s)
- Paulo Gentil
- Faculdade de Educação Física e Dança, Universidade Federal de GoiásGoiânia, Brazil
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Blüher S, Käpplinger J, Herget S, Reichardt S, Böttcher Y, Grimm A, Kratzsch J, Petroff D. Cardiometabolic risk markers, adipocyte fatty acid binding protein (aFABP) and the impact of high-intensity interval training (HIIT) in obese adolescents. Metabolism 2017; 68:77-87. [PMID: 28183455 DOI: 10.1016/j.metabol.2016.11.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 11/14/2016] [Accepted: 11/26/2016] [Indexed: 12/23/2022]
Abstract
OBJECTIVE The impact of high-intensity interval training (HIIT) as well as the association between the adipocyte fatty binding protein (aFABP) and cardiometabolic risk factors in overweight adolescents was investigated. METHODS Twenty-eight adolescents (13-18years; BMI≥90th percentile according to German reference values) were offered HIIT twice weekly for 6months. At baseline and after program completion, anthropometric, clinical and metabolic characteristics were assessed and a fasting blood sample was obtained. Leptin, adiponectin, visfatin and aFABP were measured using commercially available kits. DNA methylation at RALBP1 was assessed using pyrosequencing. Descriptive statistics, Pearson's correlation and linear models were calculated. RESULTS Mean age at start of the program was 15.5±1.4years (53.5% females) and 20/28 (71%) provided follow-up data. At baseline, aFABP was correlated with BMI-SDS (0.48 [0.13,0.72]; p=0.0095), waist-to-height-ratio (0.63 [0.33,0.81], p=0.00036) and body fat content (0.55 [0.21, 0.77]; p=0.0031). Certain markers of metabolic risk were significantly correlated with aFABP (HOMA-IR 0.52 [0.19, 0.75], p=0.0044; γGT 0.48 [0.13, 0.73], p=0.0091; uric acid 0.46 [0.11, 0.71] p=0.013; HDL-C -0.39 [-0.66, -0.01] p=0.043; triglycerides 0.38 [0.01, 0.66], p=0.047). With the exception of triglycerides, these associations vanished after adjusting for BMI-SDS. aFABP did not depend on sex, age or pubertal stage in obese adolescents. After the HIIT program, small but significant reductions were observed in waist-to-height-ratio, (0.013 [0.0025, 0.024]; p=0.023), skin-fold based body fat content (2.0% [0.6, 3.5]; p=0.011), and standard deviation score of systolic blood pressure (0.69 [0.26 to 1.1]; p=0.0036). No changes were observed in adipokines or epigenetic markers following the program. CONCLUSION HIIT may have beneficial effects on body composition and cardiometabolic health in overweight adolescents. Like in adults, aFABP seems to be associated with markers of metabolic risk in obese adolescents.
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Affiliation(s)
- Susann Blüher
- Integrated Research and Treatment Center (IFB) for AdiposityDiseases, University of Leipzig, Germany; Department of Pediatrics, University Hospital of Halle-Wittenberg, Halle, Germany.
| | - Jakob Käpplinger
- Integrated Research and Treatment Center (IFB) for AdiposityDiseases, University of Leipzig, Germany
| | - Sabine Herget
- Integrated Research and Treatment Center (IFB) for AdiposityDiseases, University of Leipzig, Germany
| | - Sandra Reichardt
- Integrated Research and Treatment Center (IFB) for AdiposityDiseases, University of Leipzig, Germany
| | - Yvonne Böttcher
- Integrated Research and Treatment Center (IFB) for AdiposityDiseases, University of Leipzig, Germany; University of Oslo, Institute of Clinical Medicine, Section for Clinical Molecular Biology, Akershus University Hospital, Oslo, Norway
| | - Andrea Grimm
- Integrated Research and Treatment Center (IFB) for AdiposityDiseases, University of Leipzig, Germany
| | - Jürgen Kratzsch
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - David Petroff
- Integrated Research and Treatment Center (IFB) for AdiposityDiseases, University of Leipzig, Germany; Clinical Trial Centre, University of Leipzig, Leipzig, Germany
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Lazzer S, Tringali G, Caccavale M, De Micheli R, Abbruzzese L, Sartorio A. Effects of high-intensity interval training on physical capacities and substrate oxidation rate in obese adolescents. J Endocrinol Invest 2017; 40:217-226. [PMID: 27639403 DOI: 10.1007/s40618-016-0551-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 09/07/2016] [Indexed: 02/06/2023]
Abstract
PURPOSE To investigate the effects of a 3-week weight-management program entailing moderate energy restriction, nutritional education, psychological counseling and three different exercise training (a: low intensity, LI: 40 % V'O2max; b: high intensity, HI: 70 % V'O2max; c: high-intensity interval training, HIIT), on body composition, energy expenditure and fat oxidation rate in obese adolescents. METHODS Thirty obese adolescents (age: 15-17 years, BMI: 37.5 kg m-2) participated in this study. Before starting (week 0, W0) and at the end of the weight-management program (week 3, W3), body composition was assessed by an impedancemeter; basal metabolic rate (BMR), energy expenditure and substrate oxidation rate were measured during exercise and post-exercise recovery by indirect calorimetry. RESULTS At W3, body mass (BM) and fat mass (FM) decreased significantly in all groups, the decreases being significantly greater in the LI than in the HI and HIIT subgroups (BM: -8.4 ± 1.5 vs -6.3 ± 1.9 vs -4.9 ± 1.3 kg and FM: -4.2 ± 1.9 vs -2.8 ± 1.2 vs -2.3 ± 1.4 kg, p < 0.05, respectively). V'O2peak, expressed in relative values, changed significantly only in the HI and HIIT groups by 0.009 ± 0.005 and 0.007 ± 0.004 L kg FFM-1 min-1 (p < 0.05). Furthermore, the HI and HIIT subgroups exhibited a greater absolute rate of fat oxidation between 50 and 70 % V'O2peak at W3. No significant changes were observed at W3 in BMR, energy expenditure during exercise and post-exercise recovery. CONCLUSION A 3-week weight-management program induced a greater decrease in BM and FM in the LI than in the HI and HIIT subgroups, and greater increase in V'O2peak and fat oxidation rate in the HI and HIIT than in the LI subgroup.
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Affiliation(s)
- S Lazzer
- Department of Medical and Biological Sciences, University of Udine, P.le Kolbe 4-33100, Udine, Italy.
- School of Sport Science, University of Udine, Udine, Italy.
- Laboratorio Sperimentale di Ricerche Auxo-Endocrinologiche, Istituto Auxologico Italiano, IRCCS, Milan, Verbania, Italy.
| | - G Tringali
- Laboratorio Sperimentale di Ricerche Auxo-Endocrinologiche, Istituto Auxologico Italiano, IRCCS, Milan, Verbania, Italy
| | - M Caccavale
- Laboratorio Sperimentale di Ricerche Auxo-Endocrinologiche, Istituto Auxologico Italiano, IRCCS, Milan, Verbania, Italy
| | - R De Micheli
- Laboratorio Sperimentale di Ricerche Auxo-Endocrinologiche, Istituto Auxologico Italiano, IRCCS, Milan, Verbania, Italy
| | - L Abbruzzese
- Laboratorio Sperimentale di Ricerche Auxo-Endocrinologiche, Istituto Auxologico Italiano, IRCCS, Milan, Verbania, Italy
| | - A Sartorio
- Laboratorio Sperimentale di Ricerche Auxo-Endocrinologiche, Istituto Auxologico Italiano, IRCCS, Milan, Verbania, Italy
- Divisione di Auxologia and Malattie Metaboliche, Istituto Auxologico Italiano, IRCCS, Milan, Verbania, Italy
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Nagle EF, Sanders ME, Franklin BA. Aquatic High Intensity Interval Training for Cardiometabolic Health: Benefits and Training Design. Am J Lifestyle Med 2017; 11:64-76. [PMID: 30202315 PMCID: PMC6124844 DOI: 10.1177/1559827615583640] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 02/23/2015] [Indexed: 12/31/2022] Open
Abstract
High-intensity interval training (HIIT) has emerged as an attractive alternative to traditional continuous exercise training (CT) programs for clinical and healthy populations who find that they can achieve equal or greater fitness benefits in less time. Land-based HIIT may not be an appropriate choice for some participants. Few studies have explored the acute responses and chronic adaptations of HIIT in an aquatic environment, and no study has compared the cardiometabolic responses of an aquatic-based program to a land-based HIIT program. Shallow-water aquatic exercise (AE) programs utilizing HIIT have elicited comparable and, in some cases, greater physiological responses compared with constant-intensity or continuous AE regimens. Factors that may explain why HIIT routines evoke greater cardiometabolic responses than CT protocols may be based on the types of exercises and how they are cued to effectively manipulate hydrodynamic properties for greater intensities. Favorable aquatic HIIT protocols such as the S.W.E.A.T. system may serve as a beneficial alternative to land-based HIIT programs for clinical, and athletic populations, potentially reducing the likelihood of associated musculoskeletal and orthopedic complications. Hence, the purpose of this review is to examine the role of AE as an alternative safe and effective HIIT modality.
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Affiliation(s)
- Elizabeth F. Nagle
- Elizabeth F. Nagle, PhD, Department of Health and Physical Activity, University of Pittsburgh, 140 Trees Hall, Pittsburgh, PA 15261; e-mail:
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Mazurek K, Zmijewski P, Krawczyk K, Czajkowska A, Kęska A, Kapuściński P, Mazurek T. High intensity interval and moderate continuous cycle training in a physical education programme improves health-related fitness in young females. Biol Sport 2016; 33:139-44. [PMID: 27274106 PMCID: PMC4885624 DOI: 10.5604/20831862.1198626] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 01/10/2016] [Accepted: 03/16/2016] [Indexed: 01/28/2023] Open
Abstract
The aim of the study was to investigate the effects of eight weeks of regular physical education classes supplemented with high intensity interval cycle exercise (HIIE) or continuous cycle exercises of moderate intensity (CME). Forty-eight collegiate females exercising in two regular physical education classes per week were randomly assigned to two programmes (HIIE; n = 24 or CME; n = 24) of additional (one session of 63 minutes per week) physical activity for 8 weeks. Participants performed HIIE comprising 2 series of 6x10 s sprinting with maximal pedalling cadence and active recovery pedalling with intensity 65%–75% HRmax or performed CME corresponding to 65%-75% HRmax. Before and after the 8-week programmes, anthropometric data and aero- and anaerobic capacity were measured. Two-way ANOVA revealed a significant time main effect for VO2max (p < 0.001), similar improvements being found in both groups (+12% in HIIE and +11% in CME), despite body mass not changing significantly (p = 0.59; +0.4% in HIIE and -0.1% in CME). A significant main time effect was found for relative fat mass (FM) and fat-free mass (FFM) (p < 0.001 and p < 0.001, respectively). A group x time interaction effect was found for relative FM and FFM (p = 0.018 and p = 0.018); a greater reduction in FM and greater increase in FFM were noted in the CME than the HIIE group. Improvements in anaerobic power were observed in both groups (p < 0.001), but it was greater in the HIIE group (interaction effect, p = 0.022). Weight loss is not mandatory for exercise-induced effects on improving aerobic and anaerobic capacity in collegiate females. Eight weeks of regular physical education classes supplemented with CME sessions are more effective in improving body composition than physical education classes supplemented with HIIE sessions. In contrast to earlier, smaller trials, similar improvements in aerobic capacity were observed following physical activity with additional HIIE or CME sessions.
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Affiliation(s)
- K Mazurek
- Józef Piłsudski University of Physical Education in Warsaw, Warsaw, Poland
| | - P Zmijewski
- Institute of Sport - National Research Institute, Warsaw, Poland
| | - K Krawczyk
- Maria Curie Skłodowska University in Lublin, Poland
| | - A Czajkowska
- Józef Piłsudski University of Physical Education in Warsaw, Warsaw, Poland
| | - A Kęska
- Józef Piłsudski University of Physical Education in Warsaw, Warsaw, Poland
| | - P Kapuściński
- Józef Piłsudski University of Physical Education in Warsaw, Warsaw, Poland
| | - T Mazurek
- Medical University of Warsaw, First Chair and Department of Cardiology, Warsaw, Poland
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Sugita M, Kapoor MP, Nishimura A, Okubo T. Influence of green tea catechins on oxidative stress metabolites at rest and during exercise in healthy humans. Nutrition 2016; 32:321-31. [DOI: 10.1016/j.nut.2015.09.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 06/22/2015] [Accepted: 09/11/2015] [Indexed: 01/18/2023]
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Kilpatrick MW, Greeley SJ. Exertional Responses to Sprint Interval Training: A Comparison of 30-sec. and 60-sec. Conditions. Psychol Rep 2014; 114:854-65. [DOI: 10.2466/06.15.pr0.114k27w8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The purpose of this study was to assess the effect of sprint interval training on rating of perceived exertion. 20 healthy participants (11 men, 9 women; M age = 23 yr.) completed a maximal cycle ergometer test and two high-intensity interval training cycling sessions. Each session utilized the same work-to-rest ratio (1:1), work intensity (90% max), recovery intensity (10% work intensity), and session duration (16 min.). Trials differed on duration of the interval segment, with a 30-sec. trial and a 60-sec. trial. Sessions required the same amount of total work over the duration of the trial. Rating of perceived exertion assessed before, during, and after exercise were higher for the 60-sec. trial than the 30-sec. trial despite no difference in total work. High intensity interval training trials utilizing the same total external work but differing in interval length produced different ratings of perceived exertion. Perceived exertion is significantly higher for sessions of exercise that utilize longer work intervals. These findings suggest that shorter intervals may produce more favorable exertional responses that could positively affect future behavior.
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Affiliation(s)
| | - Samuel J. Greeley
- School of Physical Education and Exercise Science, University of South Florida
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The effect of a short-term high-intensity circuit training program on work capacity, body composition, and blood profiles in sedentary obese men: a pilot study. BIOMED RESEARCH INTERNATIONAL 2014; 2014:191797. [PMID: 24707476 PMCID: PMC3953517 DOI: 10.1155/2014/191797] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 01/13/2014] [Accepted: 01/13/2014] [Indexed: 11/18/2022]
Abstract
The objective of this study was to determine how a high-intensity circuit-training (HICT) program affects key physiological health markers in sedentary obese men. Eight obese (body fat percentage >26%) males completed a four-week HICT program, consisting of three 30-minute exercise sessions per week, for a total of 6 hours of exercise. Participants' heart rate (HR), blood pressure (BP), rating of perceived exertion, total work (TW), and time to completion were measured each exercise session, body composition was measured before and after HICT, and fasting blood samples were measured before throughout, and after HICT program. Blood sample measurements included total cholesterol, triacylglycerides, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, glucose, and insulin. Data were analyzed by paired t-tests and one-way ANOVA with repeated measures. Statistical significance was set to P < 0.05. Data analyses revealed significant (P < 0.05) improvements in resting HR (16% decrease), systolic BP (5.5% decrease), TW (50.7%), fat tissue percentage (3.6%), lean muscle tissue percentage (2%), cholesterol (13%), triacylglycerol (37%), and insulin (18%) levels from before to after HICT program. Overall, sedentary obese males experienced a significant improvement in biochemical, physical, and body composition characteristics from a HICT program that was only 6 hours of the total exercise.
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