Ghrelin and other glucoregulatory hormone responses to eccentric and concentric muscle contractions

Endocrine
Robert R KraemerV Daniel Castracane

Abstract

Heavy resistance exercise increases growth hormone (GH) and blood glucose levels. Ghrelin is an endogenous ligand for the GH secretagory receptor that stimulates growth hormone release. Circulating ghrelin levels are suppressed by insulin and glucose. The study was conducted to determine effects of concentric (CON) and eccentric (ECC) muscle actions at the same absolute workload on circulating ghrelin and glucose as well as related glucoregulatory peptides. Ten-RM loads for bench press, leg extension, military press, and leg curl were obtained from nine males, mean age 25. +/- 1.2 yr and body fat 17.2 +/- 1.6%. Subjects then completed two experimental trials of either CON or ECC contractions at the same absolute workload. Subjects performed four sets of 12 repetitions for each exercise at 80% of a 10-RM with 90 s rest periods. A pulley system or steel levers were positioned on each machine to raise or lower the weight so only CON or ECC contractions were performed. Pre-, post-, and 15-min post-exercise blood samples were collected. Ghrelin did not increase in response to either muscle action and actually declined during the CON trial. Glucose and insulin increased regardless of the form of muscle action, but amylin and C-peptid...Continue Reading

Citations

Feb 10, 2009·European Journal of Nutrition·Kamilia TaiIan M Chapman
Apr 25, 2013·Current Reviews in Musculoskeletal Medicine·Michelle T BarrackJenna C Gibbs
Apr 29, 2011·Environmental Science & Technology·Hussein JannaJohn P Sumpter
Apr 25, 2007·Journal of Sports Sciences·Stephen F BurnsDavid J Stensel
Feb 4, 2012·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Geórgia Franco BeckerAlvaro Reischak-Oliveira
Aug 9, 2011·Journal of Nutrition and Metabolism·Neil A SchwarzRodney G Bowden
Jan 27, 2011·Medicine and Science in Sports and Exercise·Robert R KraemerV Daniel Castracane
Feb 11, 2010·Journal of Strength and Conditioning Research·John F CarusoEric E Wickel
Dec 18, 2008·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Mahnaz ManshouriAfsaneh Shemshaki
Dec 8, 2011·Metabolism: Clinical and Experimental·Gwendolyn A ThomasCarl M Maresh
Jun 15, 2010·Regulatory Peptides·Rozita FathiMarziyeh Saghebjoo
May 18, 2010·Growth Hormone & IGF Research : Official Journal of the Growth Hormone Research Society and the International IGF Research Society·Keith A StokesJan Frystyk
Jun 16, 2007·Regulatory Peptides·Johannes ErdmannVolker Schusdziarra
Jul 8, 2010·Obesity Reviews : an Official Journal of the International Association for the Study of Obesity·C E AdamsP J Brantley
Jul 20, 2010·Scandinavian Journal of Medicine & Science in Sports·W SausengH Zotter
Mar 23, 2010·Metabolism: Clinical and Experimental·Jaak JürimäeSerge P von Duvillard
Jul 28, 2009·Metabolism: Clinical and Experimental·Abbass Ghanbari-NiakiRobert R Kraemer
Apr 30, 2013·Appetite·James A KingMyra A Nimmo
Dec 4, 2014·Metabolism: Clinical and Experimental·Robert R Kraemer, V Daniel Castracane
Jul 9, 2016·Medicine and Science in Sports and Exercise·Nabeha S A HawariJason M R Gill
Nov 23, 2006·The Journal of Clinical Endocrinology and Metabolism·Kerry J MackelvieJean-Pierre Chanoine
Oct 13, 2006·The Journal of Clinical Endocrinology and Metabolism·E T VestergaardJ O L Jorgensen
Apr 21, 2010·Experimental Biology and Medicine·Abbass Ghanbari-NiakiRobert R Kraemer
Aug 14, 2020·Journal of Clinical Medicine·Juho AutioKarl-Heinz Herzig
Jul 7, 2017·Temperature : Multidisciplinary Biomedical Journal·Terence L LaursenDustin R Slivka
Nov 7, 2008·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·David R BroomDavid J Stensel
Jan 10, 2021·European Journal of Applied Physiology·I MarkusYftach Gepner

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones Et Métabolisme
A SchmidtM Wolzt
Journal of Applied Physiology
David R BroomM Miyashita
© 2022 Meta ULC. All rights reserved