Effect of absolute and relative loading on muscle activity during stable and unstable squatting

International Journal of Sports Physiology and Performance
Jeffrey M McBrideTyler J Kirby

Abstract

The purpose of this investigation was to determine the effect of stable and unstable conditions on one repetition maximum strength and muscle activity during dynamic squatting using absolute and relative loading. Ten recreationally weight-trained males participated in this study (age = 24.1 +/- 2.0 y, height = 178.0 +/- 5.6 cm, body mass = 83.7 +/- 13.4 kg, 1RM/body mass = 1.53 +/- 0.31), which involved two laboratory sessions separated by 1 wk. Linear position transducers were used to track bar displacement while subjects stood on a force plate for all trials. Vastus lateralis (VL), biceps femoris (BF) and erector spinae (L1) muscle activity (average integrated EMG [IEMG]) was also recorded during all trials. During the first session subjects complete a one repetition maximum test in a stable dynamic squat (S1RM = 128.0 +/- 31.4 kg) and an unstable dynamic squat (U1RM = 83.8 +/- 17.3 kg) in a randomized order with a 30-min rest period between conditions. The second session consisted of the performance of three trials each for 12 different conditions (unstable and stable squats using three different absolute loads [six conditions] and unstable and stable squats using three different relative loads [six conditions]). Results rev...Continue Reading

References

Apr 28, 2005·Canadian Journal of Applied Physiology = Revue Canadienne De Physiologie Appliquée·Kenneth Anderson, David G Behm
Jun 10, 2006·Dynamic Medicine : DM·Gregory J LehmanMark Fluter
Jul 3, 2007·Journal of Applied Biomechanics·Prue CormieGrant O McCaulley
Feb 26, 2008·Journal of Strength and Conditioning Research·Craig A GoodmanIan H Fairweather
Jun 12, 2008·Journal of Strength and Conditioning Research·Michael J Wahl, David G Behm

❮ Previous
Next ❯

Citations

Apr 7, 2015·Journal of Strength and Conditioning Research·Michael A Lawrence, Lara A Carlson
Aug 1, 2016·Sports Medicine·Klaus WirthAndre Sander
Aug 29, 2020·European Journal of Applied Physiology·Atle Hole SaeterbakkenVidar Andersen
Mar 1, 2012·Journal of Strength and Conditioning Research·Dave R ClarkAngus M Hunter
Dec 2, 2011·Journal of Strength and Conditioning Research·Lisa M OberackerGavin L Moir
Oct 26, 2012·Journal of Strength and Conditioning Research·Atle H Saeterbakken, Marius S Fimland
Jun 18, 2014·Journal of Strength and Conditioning Research·Atle H SaeterbakkenMarius S Fimland
Oct 25, 2016·Journal of Strength and Conditioning Research·Stephen C GlassDustin A Karlik
Jul 14, 2017·Journal of Strength and Conditioning Research·David R ClarkAngus M Hunter
Jul 5, 2017·Biomedizinische Technik. Biomedical Engineering·Amir PourmoghaddamCharles S Layne
Jun 6, 2018·Journal of Strength and Conditioning Research·Lasse MausehundTron Krosshaug
Jun 21, 2018·Journal of Human Kinetics·Roland van den Tillaar, Atle Hole Saeterbakken
Mar 8, 2019·Journal of Strength and Conditioning Research·Brendyn B ApplebyRobert U Newton
Jan 29, 2019·Journal of Strength and Conditioning Research·Brendyn B ApplebyRobert U Newton
May 17, 2019·PloS One·Roland van den TillaarAtle Hole Saeterbakken
Jul 10, 2020·PloS One·Atle Hole SaeterbakkenTom Erik Jorung Solstad
Jul 25, 2013·Journal of Sports Sciences·Roland van den Tillaar, Atle Hole Saeterbakken
Sep 9, 2015·Journal of Strength and Conditioning Research·Atle Hole SaeterbakkenRoland van den Tillaar
Apr 22, 2016·Journal of Strength and Conditioning Research·Vidar AndersenAtle Hole Saeterbakken
May 31, 2017·Journal of Strength and Conditioning Research·Stephen C Glass, Robert W Albert
Feb 28, 2019·PloS One·Atle Hole SaeterbakkenVidar Andersen
Sep 28, 2013·European Journal of Applied Physiology·Olaf PrieskeUrs Granacher
Aug 23, 2016·Journal of Strength and Conditioning Research·Michael A LawrenceLara A Carlson
Oct 9, 2014·European Journal of Applied Physiology·Joshua HowardDavid G Behm
May 26, 2017·Journal of Strength and Conditioning Research·Josinaldo J da SilvaPaulo H Marchetti
May 27, 2017·Applied Bionics and Biomechanics·Hasan U Yavuz, Deniz Erdag
Mar 26, 2014·Journal of Strength and Conditioning Research·Rodrigo R Aspe, Paul A Swinton
Dec 31, 2020·International Journal of Environmental Research and Public Health·Atle Hole SaeterbakkenVidar Andersen
Nov 5, 2020·International Journal of Environmental Research and Public Health·Bernat BuscàJavier Peña
Dec 22, 2020·Frontiers in Sports and Active Living·Vidar AndersenAtle Hole Saeterbakken
Aug 27, 2016·Journal of Strength and Conditioning Research·Stephanie J OstrowskiMichael A Lawrence
Sep 18, 2020·PloS One·Atle Hole SaeterbakkenVidar Andersen
May 1, 2021·International Journal of Environmental Research and Public Health·Alejandro Pérez-CastillaAmador García-Ramos
Jul 3, 2021·International Journal of Environmental Research and Public Health·Atle Hole SaeterbakkenVidar Andersen
Aug 4, 2021·Journal of Strength and Conditioning Research·Kyle S CollinsBryan K Christensen

❮ 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

Journal of Strength and Conditioning Research
Jeffrey M McBrideRussell Deane
Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
Kevin B ShelburneMarcus G Pandy
© 2021 Meta ULC. All rights reserved