Last edited by Fenrile
Tuesday, July 28, 2020 | History

1 edition of Intramuscular lipid utilization during exercise found in the catalog.

Intramuscular lipid utilization during exercise

gender comparisons

by Michael Allen Ferguson

  • 272 Want to read
  • 34 Currently reading

Published .
Written in English


Edition Notes

Statementby Michael Allen Ferguson
The Physical Object
Paginationviii, 122 leaves :
Number of Pages122
ID Numbers
Open LibraryOL25933027M
OCLC/WorldCa50812784

  Fat is an extremely important substrate for muscle contraction, both at rest and during exercise. Triglycerides (TGs), stored in adipose tissue and within muscle fibres, are considered to be the main source of the free fatty acids (FFAs) oxidised during exercise. It is still unclear, however, how the use of these substrates is regulated during by: Intramuscular triacylglyerols (IMTGs) represent a potentially important energy source for contracting human skeletal muscle. Although the majority of evidence from isotope tracer and 1 H-magnetic resonance spectroscopy (MRS) studies demonstrate IMTG utilization during exercise, controversy regarding the importance of IMTG as a metabolic substrate by:

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Depletion of muscle glycogen is considered a limiting performance factor during prolonged exercise, whereas the role of the intramyocellular lipid (IMCL) pool is not yet fully understood. We examined 1) intramyocellular glycogen and lipid utilization during prolonged exercise, 2) resynthesis of muscle glycogen and. Thus, the rate of appearance and concentration of FFA were found to be lower during exercise at 85% VO 2MAX than during exercise at 65% VO 2MAX, and this was associated with a lower rate of lipid oxidation during high-intensity exercise. 61 The artificial elevation of plasma FFA concentration with an infusion of lipids was found to partially Cited by:

Endurance training enhances the capacity for fat oxidation during exercise due to increased utilization of intramuscular lipid (IMCL). This study quantitatively investigated the impact of exercise training status on muscle fiber type-specific abundance of regulatory proteins involved in IMCL : Christopher S. Shaw, Courtney Swinton, Maria Gabriela Morales-Scholz, Natasha L. McRae, Tasman Erfte. Regulation of Fat Metabolism in Skeletal Muscle ASKER E. JEUKENDRUP School of Sport and Exercise Sciences, University of Birmingham, United Kingdom FAT UTILIZATION AT REST AND DURING EXERCISE After an overnight fast, most of the energy requirement at rest is covered by the (intramuscular and plasma) (F IG. 2).Cited by:


Share this book
You might also like
The first year of life.

The first year of life.

Great short novels of the American West.

Great short novels of the American West.

Shirley Chisholm for President--the story of Shirley Chisholm

Shirley Chisholm for President--the story of Shirley Chisholm

Occupational descriptions

Occupational descriptions

Into school

Into school

Caribbean Mathematics Project

Caribbean Mathematics Project

International commodity control

International commodity control

Edward Is castle-building in Wales

Edward Is castle-building in Wales

The discourses of Jimmy

The discourses of Jimmy

Canadian missionary heroes

Canadian missionary heroes

Trade remedies in North America

Trade remedies in North America

volumetric properties of aqueous sodium chloride solutions from 0⁰ to 500⁰ C at pressures up to 2000 bars based on a regression of available data in the literature

volumetric properties of aqueous sodium chloride solutions from 0⁰ to 500⁰ C at pressures up to 2000 bars based on a regression of available data in the literature

Intramuscular lipid utilization during exercise by Michael Allen Ferguson Download PDF EPUB FB2

Intramuscular glycogen and intramyocellular lipid utilization during prolonged exercise and recovery in man: A 13C and 1H nuclear magnetic resonance spectroscopy study. PDF | On Feb 1,M. Krssak and others published Intramuscular Glycogen and Intramyocellular Lipid Utilization during Prolonged Exercise and Recovery in Man: A 13C and 1H Nuclear Magnetic Author: Martin Krssak.

We examined 1) intramyocellular glycogen and lipid utilization during prolonged exercise, 2) resynthesis of muscle glycogen and lipids during recovery, and 3) Intramuscular lipid utilization during exercise book in glycogen content between nonexercising and exercising muscles during recovery.

Subjects ran on a treadmill at submaximal intensity until by:   This would imply that during exercise, the utilization of plasma-derived triacylglycerol, but not muscle triacylglycerol, is increased after adaptation to a fat-rich diet, which is consistent both with our previously observed increase in lipoprotein lipone activity during a fat-rich diet (Kiens et al.

) and the utilization of very low Cited by:   Providing a lipid emulsion with heparin intravenously during exercise can increase fat oxidation by ≈30% when low endogenous fatty acid Ra and plasma fatty acid concentrations limit the rate of fat oxidation, such as during high-intensity exercise (52, 60, 61).

However, lipid infusion before or during exercise is not a practical approach to enhancing fat by: IMTG synthesis during exercise in Ob and T2D indicate utilization as a fuel despite unchanged content, whereas IMTG concentration decreased during exercise in athletes.

mRNA expression for genes involved in lipid desaturation and IMTG synthesis were increased after exercise and by: As expected from the literature (34, 35), the RER decreased after 6 wk of endurance and resistance training in normoxia, which reflected a higher lipid utilization during exercise, but not in.

Intramuscular triacylglycerol (IMTG) is both a dynamic fat-storage depot that can expand during periods of elevated lipid availability and a fatty acid source that can be utilized during periods.

Muscle biopsies were obtained from vastus lateralis at rest, during, and after exercise in order to determine intramuscular lipid and carbohydrate utilization.

The contribution from blood-borne substrates to total oxidative metabolism was determined by arterial-femoral venous (a-fv) differences for oxygen, FFA, glucose, and lactate and leg blood by: Intramuscular triglyceride oxidation was calculated to be somewhat reduced during exercise at 85% VO2max.

These observations are preliminary, and more research is needed to fully elucidate the influence of exercise intensity, diet, and training status on intramuscular triglyceride oxidation.

Substrate oxidation during exercise: type 2 diabetes is associated with a decrease in lipid oxidation and an earlier shift towards carbohydrate utilization Diabetes & Metabolism, Vol. 32, No. 6 Effect of Ramadan fasting on fuel oxidation during exercise in trained male rugby playersCited by: Research suggests that with obesity, skeletal muscle is faced with increasing amounts of lipid which it is unable to oxidize.

As a consequence, lipids accumulate within the muscle cell; this stored intramuscular lipid (IMCL) is hypothesized to play a role in the development of insulin by:   How to Cite.

Van Der Vusse, G. and Reneman, R. Lipid Metabolism in Muscle. Comprehensive Physiology. –   Krssak M, Petersen KF, Bergeron R, et al.

Intramuscular glycogen and intramyocellular lipid utilization during prolonged exercise and recovery in man: a 13C and 1 H nuclear magnetic resonance spectroscopy study. J Clin Endocrinol Metab ; 85(2): –54Cited by: In relation to substrate utilization during exercise following endurance training, the most notable response is a reduction in CHO utilization with a concomitant increase in lipid oxidation.

For a given exercise intensity, glycogen utilization is reduced with exercise training [ 58 ], an effect that is confined locally to the actual muscles Cited by: Muscle Metabolism During Exercise Proceedings of a Karolinska Institutet Symposium held in Stockholm, Sweden, September 6–9, Honorary guest: E Hohwü Christensen Storage and Use of Intramuscular Substrates During Exercise.

Control Mechanisms for the Synthesis of Glycogen in Striated Muscle Muscle Glycogen Utilization During Work. Krssak M, Petersen KF, Bergeron R, Price T, Laurent D, Rothman DL, Roden M, Shulman GI () Intramuscular glycogen and intramyocellular lipid utilization during prolonged exercise and recovery in man: a 13 C and 1 H nuclear magnetic resonance spectroscopy study.

J Clin Endocrinol Metab –Cited by: NU30CHShaw ARI 7 July Feeding and IMTG Oxidation During Exercise The interaction of fat and carbohydrate oxi-dation during exercise depends on the feeding. Such adaptations undoubtedly contribute to the enhanced rates of lipid oxidation observed during exercise following “fat adaptation” protocols and would appear beneficial for endurance athletes.

Nonetheless, it is noteworthy that high-fat feeding may actually impair glycogen utilization during by: 1. Intramuscular Lipid Content Is Increased in besity and Decreased by Weight Loss Bret H.

Goodpaster, Remy Theriault, Simon C. Watkins, and David E. Kelley The triglyceride content of skeletal muscle samples determined by lipid extraction correlates with the severity of insulin-resistant glucose metabolism in by:.

The relative utilization of endogenous fat and carbohydrate stores during exercise can vary enormously and strongly depends on exercise intensity [28, 38], duration [28, 41, 45], and training status [19, 36].

During moderate intensity exercise, the oxidation of plasma-derived free fatty acids (FFA) in conjunction with other fat sources (muscle Cited by: showed a significant depletion of intramuscular lipid stores during the exercise and an increase in these stores during the recovery phase (30–33).

Other studies found no changes in the intramuscular triglycerides after shorter exercise tests with alternating exercise intensities (34, 35).

Now that recent studies have presented and validated the.Investigations conducted for over than 40 years demonstrated that during moderate-intensity extended exercise, the intramuscular TAG is the preferential substrate of oxidative muscular fibers of guinea-pigs (37). This seems to be the same for several species of birds and fishes, suggesting that the intramuscular TAG utilization and storage.