Plasma Leptin Levels of Elite Endurance Runners after Heavy Endurance Training
スポンサーリンク
概要
- 論文の詳細を見る
A decrease in testosterone levels and an increase in cortisol levels are observed in male athletes with the overtraining syndrome (OTS). Cortisol causes blood leptin levels to rise and testosterone has an inverse relationship with blood leptin levels. Therefore, we hypothesized that the hormonal changes as a result of OTS induce an increase in leptin. To test this hypothesis, we examined the relationship among changes in leptin, testosterone and cortisol in thirteen male collegiate distance runners (aged 20.3±1.1 years) before and after an 8-day strenuous training camp. Runners ran 284.1±48.2km during the training camp. Body fat percentages and plasma glucose concentrations decreased significantly after the training. Non-ester fatty acids and total cholesterol concentrations in blood were unchanged. Serum cortisol concentrations showed a significant increase after the training camp (from 11.82±2.00μg/dl to 16.78±3.99μg/dl), and serum testosterone decreased significantly (from 408.0±127.6ng/dl to 265.2±97.6ng/dl). The ratio of testosterone to cortisol (TCR) dropped by 50% after training (from 35.62±13.69 to 16.94±8.47). These results suggest that the subjects reached a state of the OTS. Contrary to our hypothesis, plasma leptin was not significantly changed (from 1.34±0.29ng/ml to 1.49±0.18ng/ml). Δ Plasma leptin was not significantly correlated with Δ serum cortisol, Δ TCR or Δ fat percentage. However, Δ serum testosterone was positively correlated with Δ plasma leptin (r=596, p<0.05). Plasma leptin concentrations might modulate the secretion of testosterone in overtraining conditions. In conclusion, the change in blood leptin level is independent of the changes in cortisol, TCR and fat percentage in highly trained male athletes in the state of the OTS.
- 日本生理人類学会の論文
著者
-
HORI Seiki
兵庫医科大学
-
ISHIGAKI Tohru
Department of Physiology, Hyogo College of Medicine
-
TSUJITA Junzo
Department of Physiology, Hyogo College of Medicine
-
HORI Seiki
Department of Physiology, Hyogo College of Medicine
-
OKU Yoshitaka
Department of Clinical Physiology, Chest Disease Research Institute, Kyoto University
-
KOYAMA Katsuhiro
Faculty of Education and Human Sciences, University of Yamanashi
-
Oku Yoshitaka
Department Of Clinical Physiology Chest Disease Research Institute Kyoto University
-
Oku Yoshitaka
Department Of Physiology Hyogo College Of Medicine
-
Hori Seiki
Department Of Applied Chemistry Faculty Of Science And Engineering Kinki University
-
Hori Seiki
Department Of Physiology Hyogo College Of Medicine
-
Tsujita J
Department Of Physiology Hyogo College Of Medicine
-
Tsujita Junzo
Department Of Physiology Hyogo College Of Medicine
-
Ishigaki Toru
Department Of Exercise And Health Science Aichi Prefectural University Of Fine Arts And Music
-
Koyama Katsuhiro
Faculty Of Education And Human Sciences University Of Yamanashi
-
Tanaka Nobuo
Department Of Intercultural Studies Faculty Of Cultural Studies Kyoto Sangyo University
-
Tanaka Nobuo
Physical Education And Research Center Kyoto Sangyo University
-
Tujita Junzo
兵庫医科大学
-
Ishigaki Tohru
Department of Exercise and Health Science, Aichi Prefectural University of Fine Arts and Music
関連論文
- 2-P-46 Effect of hydrogen saturated alkaline electrolyzed water on disuse muscle atrophy in gastrocnemius(The Proceedings of the 17th Annual Meetings of Japan Society of Exercise and Sports Physiology Jury 25-26, (Tokyo))
- Influence of Rehydration Levels on Thermoregulation and Body Fluid Retention during Exercise in a Hot Environment
- 202 Investigation of fluid intake by physical strain index during prolonged exercise
- Effects of Glutathione Depletion on Hypoxia-induced Erythropoietin Production in Rats
- Ventilatory Responses and Subjective Sensations during Arm Exercise and Hypercapnia in Patients with Lower-cervical and Upper-thoracic Spinal Cord Injuries
- Relationship between Dyspnea in Daily Life and Psycho-physiologic State in Patients with Chronic Obstructive Pulmonary Disease during Long-Term Domiciliary Oxygen Therapy
- 1-P-16 Oxidative stress in skeletal muscle during hindlimb unloading(The Proceedings of the 18th Annual Meetings of Japan Society Exercise and Sports Physiology Jury 31 August 1, (Kagoshima))
- Average and Local Structures in Hydrogen Absorbing Ti-Cr-Mo Alloy
- Standardization of low attenuation area versus total lung area in chest X-ray CT as an indicator of chronic pulmonary emphysema
- Quantitative assessment of the spatial distribution of low attenuation areas on X-ray CT using texture analysis in patients with chronic pulmonary emphysema
- Effects of resistive load on the phase difference between chest and mouth flow in patients with chronic obstructive pulmonary disease
- Chest flow during the initial inspiratory phase (V_) in pulmonary diseased patients
- Validity of a random noise oscillation and body box system for the measurement of the respiratory impedance of small animals
- Interval immobilization technique for recognition toward a highly hydrophilic cyanobacterium toxin
- On-column concentration of bisphenol A with one-step removal of humic acids in water
- Time-Resolved High-Resolution Electron Microscopy of Surface-Diffusion of Tungsten Atoms on MgO (001) Surfaces
- Crystal Structure of H_2-Proteinase from the Venom of Trimeresurus flavoviridis
- Crystallization and Preliminary X-Ray Studies of Isocitrate Dehydrogenase from Thermus thermophilus HB8
- Crystallization and Preliminary X-Ray Study of H_2-Proteinase from the Venom of Trimeresurus flavoviridis
- The Crystal Structures of Mutated 3-Isopropylmalate Dehydrogenase from Thermus thermophilus HB8 and Their Relationship to the Thermostability of the Enzyme
- Anion- and Cation-Exchange MicroHPLC Utilizing Poly(methacrylates)-coated Monolithic Silica Capillary Columns
- Properties of Monolithic Silica Columns for HPLC
- An Examination of the Gelation of Methacrylate Type Crosslinking Agents for the Preparation of Polymer Monolith with 3D Ordered Network Structures
- Novel Surface-modified Molecularly Imprinted Polymer Focused on the Removal of Interference in Environmental Water Samples
- Improved Detectability with a Polymer-based Trapping Device in Rapid HPLC Analysis for Ultra-low Levels of Bisphenol A (BPA) in Environmental Samples
- Capillary Electromatography on Monolithic Silica Columns
- Selective Surface Modification Technique for Improvement of Chromatographic Separation Selectivity for Sugar Derivatives
- Design for Valid "Surface" Property of Polymer-based Separation Media for Capillary Electrochromatography (CEC) : Correlation between Separation Selectivity, Retentivity and Generation of Electroosmotic Flow
- Molecularly Imprinted Uniform-Sized Polymer-Based Stationary Phase for Naproxen
- Uniformly Sized Polymer Based Stationary Phase Having Multi-Chiral Selectors
- Uniform-size Macroporous Polymer-based Stationary Phase for HPLC Prepared through Molecular Imprinting Technique
- Possible Solution to Discord between Void Volume Recovery of Polypeptide and Separation of Drugs with Restricted-access Type Polymer-based Separation Media for HPLC
- Unexpected Effects of Seed Polymer on the Porous Structures of Poly(methyl methacrylate-ethylene glycol dimethacrylate) Particles
- The Influence of VDR Genotype and Exercise on Ultrasound Parameters in Young Adult Japanese Women
- 1-O-15 Effect of hydrogen saturated alkaline electrolyzed water on urinary oxidative stress markers after an acute exercise in humans(The Proceedings of the 17th Annual Meetings of Japan Society of Exercise and Sports Physiology Jury 25-26, (Tokyo))
- Time-of-Flight Neutron Powder Diffraction Studies on a Chiral Two-dimensional Molecule-based Magnet(Condensed Matter : Structure, Mechanical and Thermal Properties)
- Magnetic Properties of Codeposited Fe/MgO Composite Films
- Analysis of Thoracoabdominal Motion during Incremental Work Cycle Exercise
- 1D-08 Changes in Fatigue Parameters in The Long Distance Runners during Summer Training Camp.
- 1D-07 Biochemical Responses to a 9 Day Summer Training Camp in Highly Trained Distance Runners
- In vivo subcellular elemental dynamics in liver graft : With special reference to effect of non-selective endothelin receptor antagonist, TAK-044, on the graft injury
- Study of Locomotor Respiratory Coupling during Pedaling
- (E11003) Changes in Heart Rate Variability and POMS Prior to and After A Four Days Intensive Camp
- In-vitro assessment of fabric structural composite scaffold applicable to tissue regeneration around implants
- Effects of hand shapeand posture on vascular hunting reaction of hand
- (E11009) Effect of training on heat tolerance of men during walking
- 2D-10 Effects of physique on Temperature Regulation of Nonathletes in a Hot Bath and Walking
- 1E-08 Equations predicting mean running speed and skating speed
- 164. Effect of different ambient temperatures on energy requirement during exercise
- Regional Differences in the Na^+ Reabsorption of Sweat Glands
- 4.Thermoregulatory responses of prepubertal boys and young men in changing temperature linearly from 28 to 15℃.
- Effect of Exercise on Endotoxin Shock with Special Reference to Changes in Concentration of Cytokines
- (E41103) The Relationships Between Leptin and Pituitary : Adrenal Axis in Junior Athletes
- Plasma Leptin Levels of Elite Endurance Runners after Heavy Endurance Training
- The Comparison between Cool and Warm-hot Environments on Lipolytic Response during Prolonged Exercise
- Ion Transport and Morphological Changes of Mitochondria in Brown Adipocytes of Warm- and Cold-Acclimatized Obese Zucker Rats
- Adaptive Changes in the Thermogenesis of Rats by Cold Acclimation and Deacclimation
- Electron Energy-Loss Spectroscopy of Carbon Films Prepared by Electron-Cyclotron-Resonance Plasma Sputtering
- Crystallization and Preliminary X-Ray Analysis of Cytochrome c-554 from Nitrosomonas europaea
- Preparation, Crystal Structures, and Properties of New Conjugated π-Electron Systems with 3-Guaiazulenyl and 4-(Dimethylamino)phenyl Groups
- Adaptation to Heat
- VASCUIAR HUNTING REACTION OF VOIIEYBAII PIAYERS TO COID AIR EXPOSURE WITH SPECIAI REFERENCE TO FINGER SHAPE
- Experimental study of neural repair of the transected spinal cord using peripheral nerve graft
- Experimental study of spinal cord compression by epidural tumors using electron probe X-ray microanalysis and confocal laser scanning microscopy
- Improvement of Alkaliphily of Bacillus Alkaline Xylanase by Introducing Amino Acid Substitutions Both on Catalytic Cleft and Protein Surface
- Production of Single-Wall Nanotubes by High-Temperature Pulsed Arc Discharge:Mechanisms of their Production
- A Calcium-Dependent Xylan-Binding Domain of Alkaline Xylanase from Alkaliphilic Bacillus sp. Strain 41M-1
- Effect of Molecular Hydrogen Saturated Alkaline Electrolyzed Water on Disuse Muscle Atrophy in Gastrocnemius Muscle
- Effects of Dietary Protein Restriction on the Fractional Rates of Protein Synthesis in Perfused Rat Hindlimb.