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The Effect of Two Types of High-Intensity Interval Training on Serum Value of GH and IGF-1 in Overweight Nurses. Asian J Sports Med 2020. [DOI: 10.5812/asjsm.103135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: Growth hormone and insulin-like growth factor 1 are anabolic hormones that play a vital role in the growth of various physical organs. Exercise is one of the stimuli that affect GH and IGF-1 secretion. Objectives: This study aimed to compare the effect of two types of high-intensity interval training (HIIT) on plasma levels of GH and IGF-l in overweight nurses. Methods: In this study, 27 nurses were voluntarily selected and randomly assigned to three groups (9 participants for each group): 1. HIIT (type 1), including eight seconds of spring running and 12 seconds of active recovery, 2. HIIT (type 2), including a 40-meter shuttle run with maximum speed, 3. control. HIIT (type 1) was performed for four weeks, three sessions per week, each session 6 - 9 min with more than 90% HRmax. HIIT (type 2) was applied for four weeks, three sessions per week, with more than 90% HRmax. The control group did not participate in any training protocol. The serum value of GH and IGF-1 were compared in three groups. The data were analyzed by the dependent t-test and ANOVA. One-way analysis of variance (ANOVA) was used to analyze the intergroup data at P ⟨ 0.05. Results: The results showed that HIIT (type 1) and (type 2) significantly increased plasma GH (P = 0.032 in group 2 and P = 0.010 in group 1) and IGF-l (P = 0.004 in group 2 and P = 10.013 in group 1) levels in nurses. The results showed a significant difference in the variables (GH and IGF-l) among HIIT (type 1), HIIT (type 2), and control groups. Conclusions: It can be concluded that four weeks of adverse intermittent exercises are effective in increasing the concentration of GH and IGF-1 serum and decreased percentage body fat in young nurses with overweight, and proportional to the intensity of the exercise protocol response rate is different.
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Can IGF-1 Serum Levels Really be Changed by Acute Physical Exercise? A Systematic Review and Meta-Analysis. J Phys Act Health 2020; 17:575-584. [DOI: 10.1123/jpah.2019-0453] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 01/21/2020] [Accepted: 02/11/2020] [Indexed: 11/18/2022]
Abstract
Background: Physical exercise plays an important role in metabolic health, especially in the insulin-like growth factor-1 (IGF-1) system. The objective of this study was to perform a systematic review and meta-analysis to evaluate the effects of a single endurance and resistance exercise session on IGF-1 serum. Methods: The systematic review was performed in SPORTDiscus, MEDLINE, PubMed, and Google Scholar databases. All analyses are based on random-effect models. The study identified 249 records of which 21 were included. Results: There was an effect of endurance exercise on total IGF-1 (P = .01), but not for free IGF-1 (P = .36). Resistance exercise similarly only affected total IGF-1 (P = .003) and not free IGF-1 (P = .37). The effect size indicated that total IGF-1 is more affected (ES = 0.81) by endurance than by resistance exercise (ES = 0.46). The present study showed that IGF-1 serum concentrations are altered by exercise type, but in conditions which are not well-defined. Conclusions: The systematic review and meta-analysis suggest that there is no determinant in serum IGF-1 changes for the exercise load characteristic. Therefore, physical exercise may be an alternative treatment to control changes in IGF-1 metabolism and blood concentration.
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Amani-Shalamzari S, Farhani F, Rajabi H, Abbasi A, Sarikhani A, Paton C, Bayati M, Berdejo-Del-Fresno D, Rosemann T, Nikolaidis PT, Knechtle B. Blood Flow Restriction During Futsal Training Increases Muscle Activation and Strength. Front Physiol 2019; 10:614. [PMID: 31178752 PMCID: PMC6538690 DOI: 10.3389/fphys.2019.00614] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 05/01/2019] [Indexed: 12/22/2022] Open
Abstract
The aim of this study was to investigate the effect of leg blood flow restriction (BFR) applied during a 3-a-side futsal game on strength-related parameters. Twelve male futsal players were randomly assigned into two groups (n = 6 for each group) during 10 training sessions either with or without leg BFR. Prior to and post-training sessions, participants completed a series of tests to assess anabolic hormones and leg strength. Pneumatic cuffs were initially inflated to 110% of leg systolic blood pressure and further increased by 10% after every two completed sessions. In comparison with baseline, the resting post-training levels of myostatin (p = 0.002) and IGF-1/MSTN ratio (p = 0.006) in the BFR group changed, whereas no change in the acute level of IGF-1 and myostatin after exercise was observed. Peak torque of knee extension and flexion increased in both groups (p < 0.05). A trend of increased neural activation of all heads of the quadriceps was observed in both groups, however, it was statistically significant only for rectus femoris in BFR (p = 0.02). These findings indicated that the addition of BFR to normal futsal training might induce greater neuromuscular benefits by increasing muscle activation and augmenting the hormonal response.
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Affiliation(s)
- Sadegh Amani-Shalamzari
- Department of Exercise Physiology, Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
| | - Farid Farhani
- Department of Exercise Physiology, Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
| | - Hamid Rajabi
- Department of Exercise Physiology, Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
| | - Ali Abbasi
- Department of Biomechanics and Sports Injuries, Faculty of Physical Education and Sports Science, Kharazmi University, Tehran, Iran
| | - Ali Sarikhani
- Department of Exercise Physiology, Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
| | - Carl Paton
- Faculty of Health and Sport Science, Eastern Institute of Technology, Napier, New Zealand
| | - Mahdi Bayati
- Department of Exercise Physiology, Sports Medicine Research Center, Sport Sciences Research Institute, Tehran, Iran
| | | | - Thomas Rosemann
- Institute of Primary Care, University of Zurich, Zurich, Switzerland
| | | | - Beat Knechtle
- Institute of Primary Care, University of Zurich, Zurich, Switzerland.,Medbase St. Gallen Am Vadianplatz, St. Gallen, Switzerland
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4
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Caru M, Petrykey K, Drouin S, Beaulieu P, St-Onge P, Lemay V, Bertout L, Laverdiere C, Andelfinger G, Krajinovic M, Sinnett D, Curnier D. Identification of genetic association between cardiorespiratory fitness and the trainability genes in childhood acute lymphoblastic leukemia survivors. BMC Cancer 2019; 19:443. [PMID: 31088516 PMCID: PMC6515640 DOI: 10.1186/s12885-019-5651-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 04/29/2019] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND The progress of treatments of childhood acute lymphoblastic leukemia (ALL) has made it possible to reach a survival rate superior to 80%. However, the treatments lead to several long-term adverse effects, including cardiac toxicity. Although studies have reported associations between genetic variants and cardiorespiratory fitness, none has been performed on childhood ALL survivors. METHODS We performed whole-exome sequencing in 239 childhood ALL survivors from the PETALE cohort. Germline variants (both common and rare) in selected set of genes (N = 238) were analyzed for an association with cardiorespiratory fitness. RESULTS Our results showed that the common variant in the TTN gene was significantly associated with a low cardiorespiratory fitness level (p = 0.0005) and that the LEPR, IGFBPI and ENO3 genes were significantly associated with a low cardiorespiratory fitness level in female survivors (p ≤ 0.002). Also, we detected an association between the low cardiorespiratory fitness level in participants that were stratified to the "high risk" prognostic group and functionally predicted rare variants in the SLC22A16 gene (p = 0.001). Positive associations between cardiorespiratory fitness level and trainability genes were mainly observed in females. CONCLUSIONS For the first time, we observed that low cardiorespiratory fitness in childhood ALL survivors can be associated with variants in genes related to subjects' trainability. These findings could allow better childhood ALL patient follow-up tailored to their genetic profile and cardiorespiratory fitness, which could help reduce at least some of the burden of long-term adverse effects of treatments.
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Affiliation(s)
- Maxime Caru
- Laboratoire de Physiopathologie de l'EXercice (LPEX), École de Kinésiologie et des Sciences de l'Activité physique, Faculté de Médecine, Université de Montréal, CEPSUM, 2100, boulevard Édouard Montpetit, Montréal, QC, H3C 3J7, Canada. .,Department of psychology, Laboratoire EA 4430 - Clinique Psychanalyse Developpement (CliPsyD), University of Paris Nanterre, Nanterre, Ile-de-France, France. .,Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada.
| | - Kateryna Petrykey
- Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada.,Department of pharmacology and physiology, University of Montreal, Montreal, Quebec, Canada
| | - Simon Drouin
- Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada
| | - Patrick Beaulieu
- Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada
| | - Pascal St-Onge
- Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada
| | - Valérie Lemay
- Laboratoire de Physiopathologie de l'EXercice (LPEX), École de Kinésiologie et des Sciences de l'Activité physique, Faculté de Médecine, Université de Montréal, CEPSUM, 2100, boulevard Édouard Montpetit, Montréal, QC, H3C 3J7, Canada.,Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada
| | - Laurence Bertout
- Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada
| | - Caroline Laverdiere
- Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada.,Department of Pediatrics, University of Montreal, Montreal, Quebec, Canada
| | - Gregor Andelfinger
- Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada.,Department of Pediatrics, University of Montreal, Montreal, Quebec, Canada
| | - Maja Krajinovic
- Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada.,Department of pharmacology and physiology, University of Montreal, Montreal, Quebec, Canada.,Department of Pediatrics, University of Montreal, Montreal, Quebec, Canada
| | - Daniel Sinnett
- Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada.,Department of Pediatrics, University of Montreal, Montreal, Quebec, Canada
| | - Daniel Curnier
- Laboratoire de Physiopathologie de l'EXercice (LPEX), École de Kinésiologie et des Sciences de l'Activité physique, Faculté de Médecine, Université de Montréal, CEPSUM, 2100, boulevard Édouard Montpetit, Montréal, QC, H3C 3J7, Canada.,Research Center, Sainte-Justine University Health Center, Montreal, Quebec, Canada
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Chielle EO, Granella LW, Maziero JS, Vidigal TMA, Mallmann BLK, Karal J. Evolution of potential biomarkers of acute muscle injury after physical exercise. BRAZ J PHARM SCI 2019. [DOI: 10.1590/s2175-97902019000117594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Anz AW, Parsa RS, Romero-Creel MF, Nabors A, Tucker MS, Harrison RM, Matuska AM. Exercise-Mobilized Platelet-Rich Plasma: Short-Term Exercise Increases Stem Cell and Platelet Concentrations in Platelet-Rich Plasma. Arthroscopy 2019; 35:192-200. [PMID: 30611351 DOI: 10.1016/j.arthro.2018.06.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 06/08/2018] [Accepted: 06/11/2018] [Indexed: 02/02/2023]
Abstract
PURPOSE To evaluate the effects of vigorous short-term exercise on the platelet and other cellular components of 2 point-of-care blood-processing devices: a buffy coat-based platelet-rich plasma (PRP) product and a plasma-based PRP product. METHODS Twenty healthy subjects (aged 21-45 years) participated in a 20-minute vigorous exercise regimen on an upright stationary bike at 70% to 85% of maximum target heart rate. Pre- and post-exercise blood was processed in either a plasma-based or automated buffy coat-based PRP system. Complete blood counts were used to compare the cellular components in whole blood and the PRP products. RESULTS Exercise significantly increased the concentrations of platelets by over 20% in whole blood (P < .001) and in both PRP products (P = .002 and P = .018). Both devices performed consistently with pre- and post-exercise blood. Buffy coat-based PRP prepared after exercise was also significantly larger in volume and had a significantly higher concentration of mobilized hematopoietic stem cells (hematopoietic progenitor cells [HPCs], from 1.7/μL to 2.7/μL, P = .043). The concentrations of all white blood cell types were increased, which could be differentially collected in the devices studied. CONCLUSIONS Exercise can be used to consistently alter the composition of PRP. Twenty minutes of vigorous exercise can increase platelet concentrations in plasma-based and buffy coat-based PRP products and can increase HPC concentrations and volume in buffy coat-based PRP. CLINICAL RELEVANCE This study shows a nonpharmacologic method to increase platelet and HPC harvests from peripheral blood. This is important because it highlights a method for altering biological therapies with limited comorbidity.
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Affiliation(s)
- Adam W Anz
- Andrews Research and Education Foundation, Gulf Breeze, U.S.A..
| | - Ronna S Parsa
- Andrews Research and Education Foundation, Gulf Breeze, U.S.A
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Yardley JE, Brockman NK, Bracken RM. Could Age, Sex and Physical Fitness Affect Blood Glucose Responses to Exercise in Type 1 Diabetes? Front Endocrinol (Lausanne) 2018; 9:674. [PMID: 30524371 PMCID: PMC6262398 DOI: 10.3389/fendo.2018.00674] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 10/29/2018] [Indexed: 12/17/2022] Open
Abstract
Closed-loop systems for patients with type 1 diabetes are progressing rapidly. Despite these advances, current systems may struggle in dealing with the acute stress of exercise. Algorithms to predict exercise-induced blood glucose changes in current systems are mostly derived from data involving relatively young, fit males. Little is known about the magnitude of confounding variables such as sex, age, and fitness level-underlying, uncontrollable factors that might influence blood glucose control during exercise. Sex-related differences in hormonal responses to physical exercise exist in studies involving individuals without diabetes, and result in altered fuel metabolism during exercise. Increasing age is associated with attenuated catecholamine responses and lower carbohydrate oxidation during activity. Furthermore, higher fitness levels can alter hormonal and fuel selection responses to exercise. Compounding the limited research on these factors in the metabolic response to exercise in type 1 diabetes is a limited understanding of how these variables affect blood glucose levels during different types, timing and intensities of activity in individuals with type 1 diabetes (T1D). Thus, there is currently insufficient information to model a closed-loop system that can predict them accurately and consistently prevent hypoglycemia. Further, studies involving both sexes, along with a range of ages and fitness levels, are needed to create a closed-loop system that will be more precise in regulating blood glucose during exercise in a wide variety of individuals with T1D.
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Affiliation(s)
- Jane E. Yardley
- Augustana Faculty, University of Alberta, Camrose, AB, Canada
- Physical Activity and Diabetes Laboratory, Alberta Diabetes Institute, Edmonton, AB, Canada
- Faculty of Kinesiology, Sport and Recreation, University of Alberta, Edmonton, AB, Canada
- *Correspondence: Jane E. Yardley
| | | | - Richard M. Bracken
- Diabetes Research Unit and School of Sport and Exercise Science, Swansea University, Swansea, United Kingdom
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8
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Glenney SS, Brockemer DP, Ng AC, Smolewski MA, Smolgovskiy VM, Lepley AS. Effect of Exercise Training on Cardiac Biomarkers in At-Risk Populations: A Systematic Review. J Phys Act Health 2017; 14:968-989. [PMID: 28682654 DOI: 10.1123/jpah.2016-0631] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Studies have demonstrated beneficial effects of exercise on cardiovascular disease biomarkers for healthy individuals; however, a comprehensive review regarding the effect of exercise on cardiovascular disease biomarkers in at-risk populations is lacking. METHODS A literature search was performed to identify studies meeting the following criteria: randomized controlled study, participants with pathology/activity limitations, biomarker outcome (total cholesterol, high-density lipoprotein, low-density lipoprotein, C-reactive protein, insulin, triglycerides, or glucose), and exercise intervention. Means and standard deviations from each biomarker were used to calculate standardized Cohen's d effect sizes with 95% confidence intervals. RESULTS In total, 37 articles were included. The majority (44/57; 77%) of data points demonstrated moderate to strong effects for the reduction in total cholesterol, triglycerides, and low-density lipoprotein, and elevation in high-density lipoprotein following exercise. The majority of data points demonstrated strong effects for reductions in blood glucose (24/30; 80%) and insulin (23/24; 96%) levels following exercise intervention. CONCLUSION Evidence is heterogeneous regarding the influence of exercise on cardiovascular disease biomarkers in at-risk patients, which does not allow a definitive conclusion. Favorable effects include reductions in triglycerides, total cholesterol, low-density lipoprotein, glucose, and insulin, and elevation in high-density lipoprotein following exercise intervention. The strongest evidence indicates that exercise is favorable for the reduction in glucose and cholesterol levels among obese patients, and reduction of insulin regardless of population.
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9
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Cui S, Sun B, Yin X, Guo X, Chao D, Zhang C, Zhang CY, Chen X, Ma J. Time-course responses of circulating microRNAs to three resistance training protocols in healthy young men. Sci Rep 2017; 7:2203. [PMID: 28526870 PMCID: PMC5438360 DOI: 10.1038/s41598-017-02294-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 04/10/2017] [Indexed: 12/13/2022] Open
Abstract
Circulating microRNAs (c-miRNAs) in human plasma have been described as a potential marker of exercise. The present study investigated the effects of three acute resistance training (RT) protocols on the time-course changes of the c-miRNAs profiles in young males. The subjects (n = 45) were randomly divided into three groups: muscular strength endurance (SE), muscular hypertrophy (MH) and maximum strength (MS). Venous blood samples were obtained before exercise and immediately, 1 h and 24 h after each RT protocol to assess the following biological parameters: c-miRNAs, anabolic and catabolic hormones, inflammatory cytokines and muscle damage markers. The results revealed that the levels of two c-miRNAs (miR-208b and miR-532), six c-miRNAs (miR-133a, miR-133b, miR-206, miR-181a, miR-21 and miR-221) and two c-miRNAs (miR-133a and miR-133b) changed significantly in response to the SE, MH and MS protocols (p < 0.05), respectively. The nature and dynamic processes of the c-miRNAs response were likely influenced by the RT modality and intensity. Moreover, miR-532 was negatively correlated with insulin-like growth factor-1 and positively correlated with interleukin-10, whereas miR-133a was negatively correlated with cortisol and positively correlated with testosterone/cortisol. These findings suggest that these c-miRNAs may serve as markers for monitoring the RT responses.
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Affiliation(s)
- Shufang Cui
- State Key Laboratory of Pharmaceutical Biotechnology, Collaborative Innovation Center of Chemistry for Life Sciences, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute for Life Sciences (NAILS), School of life sciences, Nanjing University, Nanjing, Jiangsu, 210046, China
| | - Biao Sun
- Department of Exercise and Heath, Nanjing sports Institute, 8 Linggusi Road Nanjing, Jiangsu, 210014, China
| | - Xin Yin
- Department of Exercise and Heath, Nanjing sports Institute, 8 Linggusi Road Nanjing, Jiangsu, 210014, China
| | - Xia Guo
- The Lab of Military Conditioning and Motor Function Assessment, the PLA University of Science and Technology, 60 Shuang Long Jie Road, Nanjing, Jiangsu, 211101, China
| | - Dingming Chao
- The Lab of Military Conditioning and Motor Function Assessment, the PLA University of Science and Technology, 60 Shuang Long Jie Road, Nanjing, Jiangsu, 211101, China
| | - Chunni Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Collaborative Innovation Center of Chemistry for Life Sciences, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute for Life Sciences (NAILS), School of life sciences, Nanjing University, Nanjing, Jiangsu, 210046, China.,Department of Clinical Laboratory, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu, 210002, China
| | - Chen-Yu Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Collaborative Innovation Center of Chemistry for Life Sciences, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute for Life Sciences (NAILS), School of life sciences, Nanjing University, Nanjing, Jiangsu, 210046, China.
| | - Xi Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Collaborative Innovation Center of Chemistry for Life Sciences, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute for Life Sciences (NAILS), School of life sciences, Nanjing University, Nanjing, Jiangsu, 210046, China.
| | - Jizheng Ma
- State Key Laboratory of Pharmaceutical Biotechnology, Collaborative Innovation Center of Chemistry for Life Sciences, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute for Life Sciences (NAILS), School of life sciences, Nanjing University, Nanjing, Jiangsu, 210046, China. .,The Lab of Military Conditioning and Motor Function Assessment, the PLA University of Science and Technology, 60 Shuang Long Jie Road, Nanjing, Jiangsu, 211101, China.
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Insulin-Like Growth Factor-1 and Selected Insulin-Like Growth Factor Binding Protein Concentrations during an Ultramarathon Sled Dog Race. ScientificWorldJournal 2016; 2016:5686372. [PMID: 27689132 PMCID: PMC5027292 DOI: 10.1155/2016/5686372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 08/04/2016] [Indexed: 11/18/2022] Open
Abstract
The objective of this study was to investigate the effects of running a 1000-mile (1600 km) endurance sled dog race on serum insulin-like growth factor-1 (IGF-1) and insulin-like growth factor binding proteins 1 and 3 (IGFBP-1 and IGFBP-3). Serum was examined from 12 sled dogs prior to the race, at midrace (approximately 690 km), and again at the finish. IGF-1, IGFBP-1, and IGFBP-3 were assessed using radioimmunoassay or enzyme linked immune-absorbance assays. Mean prerace concentrations were significantly higher than midrace and end-race concentrations at 215.93 ± 80.51 ng/mL, 54.29 ± 25.45 ng/mL, and 55.53 ± 28.25 ng/mL, respectively (P < 0.001). Mean IGFBP-1 concentrations were not different across these time periods at 24.1 ± 15.8 ng/mL, 25.7 ± 14.0 ng/mL, and 26.6 ± 17.6 ng/mL, respectively. IGFBP-3 concentrations showed a modest significant decrease across time periods at 3,067 ± 2,792 ng/mL, 2,626 ± 2,310 ng/mL, and 2,331 ± 2,301 ng/mL, respectively (P < 0.01). Endurance sled dogs show a precipitous drop in serum IGF-1 concentrations. These differences may be related to fuel utilization and excessive negative energy balance associated with the loss of body condition during racing. The relative stability of IGFBP-1 and IGFBP-3 suggests that IGF-1 anabolic signaling is diminished during ultramarathon racing. Further studies comparing the influence of time and duration of exercise versus negative energy balance on serum IGF-1 status are warranted to better understand exercise versus negative energy balance differences.
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Wang J, Zhu X, Guo Y, Wang Z, Zhao B, Yin Y, Liu G. Influence of Dietary Copper on Serum Growth-Related Hormone Levels and Growth Performance of Weanling Pigs. Biol Trace Elem Res 2016; 172:134-139. [PMID: 26631054 DOI: 10.1007/s12011-015-0574-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 11/24/2015] [Indexed: 10/22/2022]
Abstract
To investigate the effect of dietary copper on serum growth-related hormones levels and growth performance, a total of 60 weanling pigs were randomly assigned to six groups each containing 10 pigs, fed on basal diets supplemented with 0 (control), 100, 150, 200, 250, and 300 mg/kg copper sulfate for 80 days, respectively. The average daily gain (ADG), feed to gain ratio (F/G), feed intake and serum growth hormone (GH), insulin (INS), insulin-like growth factor 1 (IGF-1), and insulin-like growth factor-binding protein 3 (IGFBP-3) levels were detected at interval of 20 days. The results revealed that ADG, and serum GH, INS, IGF-1, and IGFBP-3 concentrations were increased significantly in the pigs fed on diets added with 100, 150, 200, 250, and 300 mg/kg copper sulfate. Meanwhile, in the pigs supplemented with 250 mg/kg copper sulfate, ADG was increased significantly from the 40th to the 60th day of the experiment (P < 0.01), and the levels of GH, INS, IGF-1, and IGFBP-3 in serum were elevated significantly from the 20th to the 40th day of the experiment (P < 0.01). It is concluded that effects of copper supplemented in the diet on the growth of pigs were related to the increasing levels of GH, INS, IGF-1, and IGFBP-3 in serum which were induced by copper. High dietary copper increase the concentrations of growth-related hormones in serum, resulting in improving the growth performance of weanling pigs.
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Affiliation(s)
- Jianguo Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xiaoyan Zhu
- UMR 1195 Inserm and University Paris-Saclay, Saclay, Kremlin-Bicêtre, France
| | - Yazhou Guo
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Zhe Wang
- College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin, China
| | - Baoyu Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Yunhou Yin
- Guizhou Minzu University, Guiyang, 550025, China.
| | - Guowen Liu
- College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin, China.
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Mangine GT, Hoffman JR, Gonzalez AM, Townsend JR, Wells AJ, Jajtner AR, Beyer KS, Boone CH, Miramonti AA, Wang R, LaMonica MB, Fukuda DH, Ratamess NA, Stout JR. The effect of training volume and intensity on improvements in muscular strength and size in resistance-trained men. Physiol Rep 2015; 3:e12472. [PMID: 26272733 PMCID: PMC4562558 DOI: 10.14814/phy2.12472] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 07/01/2015] [Indexed: 12/21/2022] Open
Abstract
This investigation compared the effect of high-volume (VOL) versus high-intensity (INT) resistance training on stimulating changes in muscle size and strength in resistance-trained men. Following a 2-week preparatory phase, participants were randomly assigned to either a high-volume (VOL; n = 14, 4 × 10-12 repetitions with ~70% of one repetition maximum [1RM], 1-min rest intervals) or a high-intensity (INT; n = 15, 4 × 3-5 repetitions with ~90% of 1RM, 3-min rest intervals) training group for 8 weeks. Pre- and posttraining assessments included lean tissue mass via dual energy x-ray absorptiometry, muscle cross-sectional area and thickness of the vastus lateralis (VL), rectus femoris (RF), pectoralis major, and triceps brachii muscles via ultrasound images, and 1RM strength in the back squat and bench press (BP) exercises. Blood samples were collected at baseline, immediately post, 30 min post, and 60 min postexercise at week 3 (WK3) and week 10 (WK10) to assess the serum testosterone, growth hormone (GH), insulin-like growth factor-1 (IGF1), cortisol, and insulin concentrations. Compared to VOL, greater improvements (P < 0.05) in lean arm mass (5.2 ± 2.9% vs. 2.2 ± 5.6%) and 1RM BP (14.8 ± 9.7% vs. 6.9 ± 9.0%) were observed for INT. Compared to INT, area under the curve analysis revealed greater (P < 0.05) GH and cortisol responses for VOL at WK3 and cortisol only at WK10. Compared to WK3, the GH and cortisol responses were attenuated (P < 0.05) for VOL at WK10, while the IGF1 response was reduced (P < 0.05) for INT. It appears that high-intensity resistance training stimulates greater improvements in some measures of strength and hypertrophy in resistance-trained men during a short-term training period.
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Affiliation(s)
- Gerald T Mangine
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | - Jay R Hoffman
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | - Adam M Gonzalez
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | - Jeremy R Townsend
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | - Adam J Wells
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | - Adam R Jajtner
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | - Kyle S Beyer
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | - Carleigh H Boone
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | - Amelia A Miramonti
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | - Ran Wang
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | - Michael B LaMonica
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | - David H Fukuda
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
| | | | - Jeffrey R Stout
- Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
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13
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Rubin DA, Pham HN, Adams ES, Tutor AR, Hackney AC, Coburn JW, Judelson DA. Endocrine response to acute resistance exercise in obese versus lean physically active men. Eur J Appl Physiol 2015; 115:1359-66. [DOI: 10.1007/s00421-015-3105-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 01/11/2015] [Indexed: 11/28/2022]
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14
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Silva Jr. AJ, Souza MVC, Tomaz LM, Bertucci DR, Souza GSD, Vanevazzi GHR, Conceicao Filho J, Campanholi Neto J, Ruffoni LD, Sousa NMFD, Arakelian VM, Ramos APP, Neiva CM, Baldissera V. Estudo do comportamento cortisol, gh e insulina apos uma sessao de exercicio resistido agudo. REV BRAS MED ESPORTE 2014. [DOI: 10.1590/s1517-86922014000100004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
INTRODUÇÃO: Muitos trabalhos têm estudado o comportamento hormonal nos exercício resistido, entretanto poucos relacionam os hormônios cortisol, GH e insulina. OBJETIVO: Estudar os ajustes das concentrações plasmáticas dos hormônios cortisol, GH e insulina em exercícios resistidos de mesma intensidade com relação à massas musculares distintas. MÉTODOS: Dez voluntários, com 20,3 ± 4,2 anos, 74,1 ± 10,2 kg de peso, 177,2 ± 4,6 cm de estatura e 23,8 ± 3,2 kg/m2 de IMC, realizaram uma sessão de leg press (LP) e supino reto (SR) com quatro séries com 10 repetições a 70% 1 RM com três minutos de intervalo. Foram coletadas amostras de sangue para dosagem das concentrações plasmáticas de cortisol, GH e insulina em repouso (Pré) e em 0' (Rec. 0'), 30' (Rec. 30') e 90' (Rec. 90') de recuperação. RESULTADOS: As concentrações plasmáticas de cortisol foram significativamente reduzidas ao final da recuperação em LP (2,20±0,37 ng/dl para 1,33±0,38ng/dl) em relação à pré-dosagem. As concentrações de GH e insulina elevaram-se significativamente durante a recuperação. GH em LP foi significativamente maior em Rec. 0' (2,75±3,29 ng/ml para 9,60±5,32 ng/dl) do que em pré. A insulina elevou-se significativamente em Rec. 30' em LP (14,70±7,92 ulU/ml para 21,66 ± 8,61 ulU/ml) e em SR (6,17 ± 2,99 ulU/ml para 19,70 ± 13,8 ulU/ml) em relação à pré. As concentrações plasmáticas de insulina pré em LP foram significativamente superiores a SR (14,70 ulU/ml e 6,17 ± 2,99 ulU/ml). CONCLUSÃO: O exercício resistido promoveu diferentes ajustes nas concentrações hormonais de cortisol, GH e insulina durante o período de recuperação.
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Affiliation(s)
- Autran Jose Silva Jr.
- Universidade Estadual Paulista, Brasil; Universidade Federal de Sao Carlos, Brasil; Centro Universitario da Fundacao Educacional de Guaxupe, Brasil
| | | | | | | | | | | | | | | | | | | | | | | | | | - Vilmar Baldissera
- Universidade Estadual Paulista, Brasil; Universidade Federal de Sao Carlos, Brasil
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15
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Abstract
Low concentrations of circulating testosterone have been associated with dementia manifesting with advancing age and in neurodegenerative conditions. Huntington's disease (HD) is a dominantly inherited neurodegenerative disease with an invariably fatal outcome. Severe motor symptoms, psychosis and dementia are symptomatic hallmarks of the progression of HD that result from the dysfunction and death of neocortical and basal ganglia neurones. Treatments are directed toward manifest symptoms, although they are largely ineffectual in slowing or preventing disease progression. Emerging data have identified hypothamic pathologies in HD that result in endocrine disturbances. Clinically defined primary or secondary hypogonadism elicit low circulating testosterone concentrations and have been linked to the development of Alzheimer's disease in men. Examining similar neuroendocrine dysfunction in HD including the nature of manifest hypogonadism in male patients could allow an elucidation of the complex pathophysiology of HD and provide an impetus for hitherto untested testosterone replacement therapy.
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Affiliation(s)
- M I Ransome
- Florey Neuroscience Institutes, Melbourne Brain Centre, University of Melbourne, Victoria, Australia.
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Di Luigi L, Romanelli F, Sgrò P, Lenzi A. Andrological aspects of physical exercise and sport medicine. Endocrine 2012; 42:278-84. [PMID: 22430368 DOI: 10.1007/s12020-012-9655-6] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Accepted: 03/06/2012] [Indexed: 12/21/2022]
Abstract
Appropriate physical activity is one of the bases of healthy lifestyle. In fact, physical exercise and playing sport may be associated with both improvements and injury to both general and reproductive health. A biologically normal testosterone secretion appears fundamental in males to guarantee both a physiological exercise adaptation and safe sport participation. The reproductive system is highly sensitive to the effects of exercise-related stress and the reproductive hormones may both increase and decrease after different acute or chronic exercises. Exercise and sport participation may positively or negatively influence andrological health status depending on the type, intensity and duration of performed physical activity and on individual health status. In addition, prohibited substances administration (e.g. androgenic-anabolic steroids, and so forth) in competitive and non-competitive athletes represents the main cause of iatrogenic andrological diseases. Preventing and treating andrological problems in active healthy and unhealthy individuals is as important as promoting a correct lifestyle. Physicians need to be educated on the relationships between the male reproductive system and sport participation and on the great role of the pre-participation physical examination in the prevention of andrological diseases.
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Affiliation(s)
- Luigi Di Luigi
- Unit of Endocrinology, Department of Health Sciences, University of Rome Foro Italico, Piazza Lauro de Bosis, 15, 00135 Rome, Italy.
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17
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Babcock L, Escano M, D'Lugos A, Todd K, Murach K, Luden N. Concurrent aerobic exercise interferes with the satellite cell response to acute resistance exercise. Am J Physiol Regul Integr Comp Physiol 2012; 302:R1458-65. [DOI: 10.1152/ajpregu.00035.2012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The addition of aerobic exercise (AE) to a resistance exercise (RE) program (concurrent exercise, CE) can interfere with maximum muscle fiber growth achieved with RE. Further, CE appears to markedly affect the growth of myosin heavy chain (MHC) I, but not MHC IIa fibers. The mechanism responsible for this “interference” is unclear. Satellite cell (SC) responsiveness to exercise appears to influence muscle adaptation but has not yet been examined following acute concurrent exercise. Thus, we assessed the fiber-type-specific SC response to RE, AE, and CE exercise. Eight college-aged males completed the following two exercise trials: the RE trial, which consisted of unilateral leg extensions and presses (4 sets ≥ 10 repetitions: 75% 1 repetition maximum, RM); and the AE/CE trial, which included an identical RE protocol with the opposite leg, immediately followed by subjects cycling for 90 min (60% Wmax). Muscle biopsies were obtained from the vastus lateralis before and 4 days after each session. Samples were cross-sectioned, stained with antibodies against NCAM, Ki-67, and MHC I, counterstained with DAPI, and analyzed for SC density (SC per fiber), SC activation, and fiber type. SC density increased to a greater extent following RE (38 ± 10%), compared with CE (−6 ± 8%). Similarly, MHC I muscle fiber SC density displayed a greater increase following RE (46 ± 14%), compared with AE (−7 ± 17%) and CE (−8 ± 8%). Our data indicate that the SC response to RE is blunted when immediately followed by AE, at least in MHC I muscle fibers, and possibly MHC II fibers. This suggests that the physiological environment evoked by AE might attenuate the eventual addition of myonuclei important for maximum muscle fiber growth and consequent force-producing capacity.
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Affiliation(s)
- Lyle Babcock
- Department of Kinesiology, James Madison University, Harrisonburg, Virginia
| | - Matthew Escano
- Department of Kinesiology, James Madison University, Harrisonburg, Virginia
| | - Andrew D'Lugos
- Department of Kinesiology, James Madison University, Harrisonburg, Virginia
| | - Kent Todd
- Department of Kinesiology, James Madison University, Harrisonburg, Virginia
| | - Kevin Murach
- Department of Kinesiology, James Madison University, Harrisonburg, Virginia
| | - Nicholas Luden
- Department of Kinesiology, James Madison University, Harrisonburg, Virginia
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