scholarly journals The Investigation of the Effects of Melatonin on Electrocardiografic Findings in Rats Undergoing Acute Intense Exercise

2021 ◽  
Vol 9 (3) ◽  
pp. 276-283
Author(s):  
Metehan UZUN ◽  
Pınar ÇAKAN
Keyword(s):  
Intense Exercise

scholarly journals Effect of Intense Exercise on Plasma Macrominerals and Trace Elements in Lidia Bulls

2021 ◽  
Vol 8 (6) ◽  
pp. 97
Author(s):  
Francisco Escalera-Valente ◽  
Marta E. Alonso ◽  
Juan M. Lomillos ◽  
Vicente R. Gaudioso ◽  
Ángel J. Alonso ◽  
...  
Keyword(s):  
Cell Metabolism ◽  
Sweat Glands ◽  
Stressful Situation ◽  
Biological Functions ◽  
Intense Exercise ◽  
Physical Effort ◽  
Mean Values ◽  
Inorganic Substances ◽  
Body Tissues ◽  
Icp Ms

Minerals are inorganic substances present in all body tissues and fluids that directly or indirectly influence the maintenance of multiple metabolic processes and, therefore, are essential for the development of various biological functions. The Lidia bull breed may be considered an athlete, as during a bull fight it displays considerable physical effort of great intensity and short duration in a highly stressful situation. The objective of this study was to assess plasma minerals concentration (macro- and microminerals) in Lidia bulls after intense physical exercise during a bull fight. Plasma Ca, Mg, P, K, Na, Fe, Cr, Co, Ni, Cu, Zn, Se and Mo concentrations were measured in 438 male Lidia bulls. Ca, P and Mg were measured using a Cobas Integra autoanalyzer, while Na and K were determined by ICP-AES, and Fe, Cr, Co, Ni, Cu, Zn, Se and Mo were measured by ICP-MS. All macrominerals, (Ca: 2.96 ± 0.31, Mg: 1.27 ± 0.17, P: 3.78 ± 0.65, K: 7.50 ± 1.58, Na: 150.15 ± 19.59 in mmol/L), and Cr (1.24 ± 0.58), Ni (0.249 ± 1.07), Cu (22.63 ± 4.84) and Zn (24.14 ± 5.59, in μmol/L) showed greater mean values than the reported reference values in the published literature, while Co (0.041 ± 0.07), Se (0.886 ± 0.21) and Mo (0.111 ± 0.08, in μmol/L) values were lower than those reported for other bovine breeds. These increased concentrations could be justified mainly by muscle cell metabolism, hepatic need to provide energy, and intense dehydration and hemoconcentration by losses through sweat glands or urination.

Mismatch between lipid mobilization and oxidation: glycerol kinetics in running African goats

1993 ◽  
Vol 264 (4) ◽  
pp. R797-R803 ◽  
Author(s):  
J. M. Weber ◽  
T. J. Roberts ◽  
C. R. Taylor
Keyword(s):  
Fatty Acid ◽  
Aerobic Capacity ◽  
Indirect Calorimetry ◽  
Treadmill Exercise ◽  
Large Fraction ◽  
O2 Consumption ◽  
Glycerol Release ◽  
Intense Exercise ◽  
Lipid Mobilization ◽  
Relative Contribution

Glycerol kinetics and total fatty acid (FA) oxidation of trained African pygmy goats were measured by continuous infusion of [2-3H]glycerol and indirect calorimetry during treadmill exercise at 40, 60, and 85% maximal O2 consumption (VO2max). Our main goals were 1) to determine whether rates of FA mobilization and utilization are eventually matched as exercise intensity increases, thereby minimizing reesterification to supply more FA to working muscles, and 2) to test the hypothesis that lipolytic rate is proportional to aerobic capacity by comparing low-aerobic goats with published values from highly aerobic dogs and humans. Mean rate of glycerol release in the circulation (Ra glycerol) was 3.83 +/- 0.11 at rest, 7.69 +/- 0.88 at 40% VO2max, reached a maximum of 15.32 +/- 0.95 at 60% VO2max, and returned to 10.53 +/- 0.76 mumol.kg-1 x min-1 at 85% VO2max. Lipolytic rate did not match total FA oxidation, implying that Ra glycerol cannot be used as an index of FA utilization, even during intense exercise. A large fraction of total FA released by lipolysis was reesterified at 60 and 85% VO2max, showing that FA mobilization does not limit whole animal FA oxidation at these intensities. Comparing goat, dog, and human responses reveals that mammalian lipolytic rate is scaled with aerobic capacity. High- and low-aerobic species exercising at the same %VO2max mobilize FA in exact proportion with their metabolic rate, suggesting that the relative contribution of FA to total energy provision is independent of VO2max.

Effects of intense exercise training on rainbow trout growth, body composition and metabolic responses

2002 ◽  
Vol 58 (1) ◽  
pp. 1-7 ◽  
Author(s):  
M. D. Hernández ◽  
P. Mendiola ◽  
J. de Costa ◽  
S. Zamora
Keyword(s):  
Body Composition ◽  
Rainbow Trout ◽  
Exercise Training ◽  
Metabolic Responses ◽  
Intense Exercise

scholarly journals Diaphragmatic function after intense exercise in congestive heart failure patients

2002 ◽  
Vol 20 (6) ◽  
pp. 1399-1405 ◽  
Author(s):  
T.J. Kufel ◽  
L.A. Pineda ◽  
R.G. Junega ◽  
R. Hathwar ◽  
M.J. Mador
Keyword(s):  
Heart Failure ◽  
Congestive Heart Failure ◽  
Intense Exercise ◽  
Heart Failure Patients ◽  
Diaphragmatic Function

scholarly journals Intense Exercise in Type 1 Diabetes: Exploring the Role of Continuous Glucose Monitoring

2007 ◽  
Vol 1 (4) ◽  
pp. 570-573 ◽  
Author(s):  
Ludovic Jean Chassin ◽  
Malgorzata E. Wilinska ◽  
Roman Hovorka
Keyword(s):  
Type 1 Diabetes ◽  
Continuous Glucose Monitoring ◽  
Glucose Monitoring ◽  
Intense Exercise

Phenylephrine decreases frontal lobe oxygenation at rest but not during moderately intense exercise

2010 ◽  
Vol 108 (6) ◽  
pp. 1472-1478 ◽  
Author(s):  
Patrice Brassard ◽  
Thomas Seifert ◽  
Mads Wissenberg ◽  
Peter M. Jensen ◽  
Christian K. Hansen ◽  
...  
Keyword(s):  
Frontal Lobe ◽  
High Intensity ◽  
Sympathetic Activity ◽  
Near Infrared ◽  
Cerebral Metabolism ◽  
High Intensity Exercise ◽  
Mean Flow ◽  
Intense Exercise ◽  
Low Intensity ◽  
Low Intensity Exercise

Whether sympathetic activity influences cerebral blood flow (CBF) and oxygenation remains controversial. The influence of sympathetic activity on CBF and oxygenation was evaluated by the effect of phenylephrine on middle cerebral artery (MCA) mean flow velocity ( Vmean) and the near-infrared spectroscopy-derived frontal lobe oxygenation (ScO2) at rest and during exercise. At rest, nine healthy male subjects received bolus injections of phenylephrine (0.1, 0.25, and 0.4 mg), and changes in mean arterial pressure (MAP), MCA Vmean, internal jugular venous O2 saturation (SjvO2), ScO2, and arterial Pco2 (PaCO2) were measured and the cerebral metabolic rate for O2 (CMRO2) was calculated. In randomized order, a bolus of saline or 0.3 mg of phenylephrine was then injected during semisupine cycling, eliciting a low (∼110 beats/min) or a high (∼150 beats/min) heart rate. At rest, MAP and MCA Vmean increased ∼20% ( P < 0.001) and ∼10% ( P < 0.001 for 0.25 mg of phenylephrine and P < 0.05 for 0.4 mg of phenylephrine), respectively. ScO2 then decreased ∼7% ( P < 0.001). Phenylephrine had no effect on SjvO2, PaCO2, or CMRO2. MAP increased after the administration of phenylephrine during low-intensity exercise (∼15%), but this was attenuated (∼10%) during high-intensity exercise ( P < 0.001). The reduction in ScO2 after administration of phenylephrine was attenuated during low-intensity exercise (−5%, P < 0.001) and abolished during high-intensity exercise (−3%, P = not significant), where PaCO2 decreased 7% ( P < 0.05) and CMRO2 increased 17% ( P < 0.05). These results suggest that the administration of phenylephrine reduced ScO2 but that the increased cerebral metabolism needed for moderately intense exercise eliminated that effect.

405 REGULATION OF PLASMA FREE FATTY ACID METABOLISM DURING INTENSE EXERCISE

1994 ◽  
Vol 26 (Supplement) ◽  
pp. S72
Author(s):  
C. A. Raguso ◽  
A. R. Coggan ◽  
L. S. Sidossis ◽  
A. Gastaldelli ◽  
R. R. Wolfe
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Fatty Acid Metabolism ◽  
Acid Metabolism ◽  
Plasma Free Fatty Acid ◽  
Intense Exercise ◽  
Free Fatty Acid Metabolism

Influence of exercise and fasting on blood parameters in juvenile green turtles (Chelonia mydas): implications for health assessments

2020 ◽  
pp. 1-8
Author(s):  
D. March ◽  
E. Ariel ◽  
D. Blyde ◽  
L. Christidis ◽  
B.P. Kelaher
Keyword(s):  
Biochemical Parameters ◽  
Health Assessment ◽  
Chelonia Mydas ◽  
Blood Parameters ◽  
Fasting State ◽  
Intense Exercise ◽  
Post Exercise ◽  
Green Turtles ◽  
Health Assessments ◽  
Lactate Levels

This study investigated the influence of exercise and fasting state on haematologic and biochemical parameters in juvenile green turtles (Chelonia mydas). Animals were divided into two groups; one group was fasted for 72 h and one group was fed 1 h prior to exercise. Exercise was induced by repeated righting reflexes and blood values were measured prior to and post-exercise. Prior to exercise, fasted animals showed significantly decreased levels of urea, pH, PVCO2 and HCO3- and significant increases in Cl- and PVO2, compared to fed animals and fasted animals had significantly poorer exercise performance. Following exercise both fasted and fed animals had significant increases in Na+, K+, Cl-, PVCO2, PVO2, urea and lactate and significant decreases in pH and HCO3-. The magnitude of increase in lactate levels was significantly less in fasted animals. Prior to exercise, a significant correlation was calculated in fasted animals between pH and HCO3-. Following exercise, significant correlations were calculated in fed animals between pH and HCO3-, PVCO2 and lactate, and between pH and HCO3- in fasted animals. These results show that analytical method, fasting state and the physiologic changes induced during the intense exercise can affect haematologic and biochemical analytes and these factors should be considered when interpreting results from health assessment of wild animals.

Effects of intense exercise on intracellular glycogen and fat in pigeon pectoralis

1976 ◽  
Vol 96 (4) ◽  
pp. 568-573 ◽  
Author(s):  
G.H. Parker ◽  
J.C. George
Keyword(s):  
Intense Exercise
Sign in / Sign up

Export Citation Format

Share Document