keyword
https://read.qxmd.com/read/38662880/a-biomechanical-comparison-of-the-back-squat-and-hexagonal-barbell-deadlift
#1
COMPARATIVE STUDY
Cody A Stahl, Giancarlo Regni, Jonathan Tanguay, Maddie McElfresh, Eoghan Trihy, David Diggin, Deborah L King
Stahl, CA, Regni, G, Tanguay, J, McElfresh, M, Trihy, E, Diggin, D, and King, DL. A biomechanical comparison of the back squat and hexagonal barbell deadlift. J Strength Cond Res 38(5): 815-824, 2024-Coaches often use different exercises to encourage similar strength adaptations and limit monotony. Anecdotally, the hexagonal barbell deadlift (HBD) exhibits similarities to the back squat (BS). To date, research has not examined the empirical differences between these exercises. This study examined kinematic and kinetic differences between the BS and the HBD across different loads...
May 1, 2024: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/36828329/propulsion-phase-characteristics-of-loaded-jump-variations-in-resistance-trained-women
#2
JOURNAL ARTICLE
Timothy J Suchomel, Shana M McKeever, Olusegun Sijuwade, Logan Carpenter
The purpose of this study was to compare the propulsion phase characteristics of the jump squat (JS), hexagonal barbell jump (HEXJ), and jump shrug (JShrug) performed across a spectrum of relative loads. Thirteen resistance-trained women (18-23 years old) performed JS, HEXJ, and JShrug repetitions at body mass (BM) or with 20, 40, 60, 80, or 100% BM during three separate testing sessions. Propulsion mean force (MF), duration (Dur), peak power output (PP), force at PP (FPP ), and velocity at PP (VPP ) were compared between exercises and loads using a series of 3 × 6 repeated measures ANOVA and Hedge's g effect sizes...
February 9, 2023: Sports
https://read.qxmd.com/read/36515609/using-the-load-velocity-profile-for-predicting-the-1rm-of-the-hexagonal-barbell-deadlift-exercise
#3
JOURNAL ARTICLE
Marcel Lopes Dos Santos, J Bryan Mann, Ricardo Berton, Brent A Alvar, Robert G Lockie, J Jay Dawes
Lopes dos Santos, M, Mann, JB, Berton, R, Alvar, B, Lockie, RG, and Dawes, JJ. Using the load-velocity profile for predicting the 1RM of the hexagonal barbell deadlift exercise. J Strength Cond Res 37(1): 220-223, 2023-The aim of this study was to determine whether bar velocity can be used to estimate the 1 repetition maximum (1RM) on the hexagonal bar deadlift (HBD). Twenty-two National Collegiate Athletic Association Division I male ice hockey players (age = 21.0 ± 1.5 years, height = 182.9 ± 7...
January 1, 2023: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/36355819/acute-non-specific-low-back-pain-does-not-impair-isometric-deadlift-force-or-electromyographic-excitation-a-cross-sectional-study
#4
JOURNAL ARTICLE
Matt S Stock, Megan E Bodden, Jenna M Bloch, Karen L Starnes, Gabriela Rodriguez, Ryan M Girts
Low back pain (LBP) is a leading cause of disability. The use of deadlift-based assessments in assessing LBP is becoming common in clinical settings, but these concepts have not been well studied. We sought to compare force and muscle excitation during isometric deadlifts in participants suffering from LBP versus asymptomatic controls. We also compared these outcomes for conventional versus hexagonal barbells. Sixteen adults with mild-to-moderate, acute, non-specific LBP and 19 controls performed maximal, isometric deadlifts while standing on a force plate using conventional and hexagonal barbells...
October 31, 2022: Sports
https://read.qxmd.com/read/32916655/muscle-fatigability-after-hex-bar-deadlift-exercise-performed-with-fast-or-slow-tempo
#5
JOURNAL ARTICLE
Jay A Collison, Jason Moran, Inge Zijdewind, Florentina J Hettinga
PURPOSE: To examine the differences in muscle fatigability after resistance exercise performed with fast tempo (FT) compared with slow tempo (ST). METHODS: A total of 8 resistance-trained males completed FT and ST hexagonal-barbell deadlifts, consisting of 8 sets of 6 repetitions at 60% 3-repetition maximum, using a randomized crossover design. Each FT repetition was performed with maximal velocity, while each repetition during ST was performed with a 3-1-3 (eccentric/isometric/concentric) tempo (measured in seconds)...
September 11, 2020: International Journal of Sports Physiology and Performance
https://read.qxmd.com/read/31531137/the-effect-of-load-placement-on-the-power-production-characteristics-of-three-lower-extremity-jumping-exercises
#6
JOURNAL ARTICLE
Timothy J Suchomel, Shana M McKeever, Olusegun Sijuwade, Logan Carpenter, John J McMahon, Irineu Loturco, Paul Comfort
The purpose of this study was to compare the power production characteristics of the jump squat (JS), hexagonal barbell jump (HEXJ), and jump shrug (JShrug) across a spectrum of relative loads. Fifteen resistance-trained men completed three testing sessions where they performed repetitions of either the JS, HEXJ, or JShrug at body mass (BM) or with 20, 40, 60, 80, or 100% of their BM. Relative peak power (PPRel ), relative force at PP (FPP ), and velocity at PP (VPP ) were compared between exercises and loads...
August 2019: Journal of Human Kinetics
https://read.qxmd.com/read/29985223/jump-training-in-rugby-union-players-barbell-or-hexagonal-bar
#7
JOURNAL ARTICLE
Jonathon J S Weakley, Kevin Till, Dale B Read, Cedric Leduc, Gregory A B Roe, Padraic J Phibbs, Joshua Darrall-Jones, Ben Jones
Weakley, JJS, Till, K, Read, DB, Leduc, C, Roe, GAB, Phibbs, PJ, Darrall-Jones, J, and Jones, B. Jump training in rugby union players: barbell or hexagonal bar?. J Strength Cond Res XX(X): 000-000, 2018-The countermovement jump (CMJ) is an exercise that can develop athletic performance. Using the conventional barbell (BAR) and hexagonal barbell (HEX) while jumping, the intensity can be increased. However, the bar that provides greater adaptations is unknown. Therefore, this study aimed to assess changes in loaded and unloaded CMJ with either a BAR or HEX across a 4-week mesocycle in rugby union players...
July 4, 2018: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/29910442/effect-of-a-hexagonal-barbell-on-the-mechanical-demand-of-deadlift-performance
#8
JOURNAL ARTICLE
Jason Lake, Freddie Duncan, Matt Jackson, David Naworynsky
This study compared typical mechanical variables of interest obtained directly from barbell motion during deadlift performance with a conventional (CBD) and a hexagonal barbell (HBD). Eleven men, proficient with both deadlift variations, volunteered to participate in the study (age: 20.3 ± 0.6 years; height: 175.5 ± 8.5 m; mass: 88.7 ± 19.0 kg; CBD 1RM: 183 ± 22 kg; HBD 1RM: 194 ± 20 kg). During the first session, CBD and HBD 1RM was assessed; during the second session, they performed 3 sets of 1 CBD repetition with 90% 1RM; and in session three, they repeated this process with the HBD...
October 24, 2017: Sports
https://read.qxmd.com/read/27360607/an-examination-of-muscle-activation-and-power-characteristics-while-performing-the-deadlift-exercise-with-straight-and-hexagonal-barbells-1688-board-341-june-2-9-00-am-10-30-am
#9
JOURNAL ARTICLE
Kevin D Camara, Jared W Coburn, Dustin D Dunnick, Lee E Brown, Andrew J Galpin, Pablo B Costa
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/27360500/correlation-between-isometric-deadlift-with-olympic-and-hexagonal-barbells-to-a-vertical-jump-1581-board-234-june-2-9-00-am-10-30-am
#10
JOURNAL ARTICLE
RoQue A Harmon, Kylie K Malyszek, Dustin D Dunnick, Pablo B Costa, Jared W Coburn, Lee E Brown
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/27191698/comparison-of-olympic-and-hexagonal-barbells-with-midthigh-pull-deadlift-and-countermovement-jump
#11
COMPARATIVE STUDY
Kylie K Malyszek, RoQue A Harmon, Dustin D Dunnick, Pablo B Costa, Jared W Coburn, Lee E Brown
Malyszek, KK, Harmon, RA, Dunnick, DD, Costa, PB, Coburn, JW, and Brown, LE. Comparison of olympic and hexagonal barbells with midthigh pull, deadlift, and countermovement jump. J Strength Cond Res 31(1): 140-145, 2017-Those training for strength and power commonly use different bars and different lifts. The hexagonal barbell (HBar) and Olympic barbell (OBar) are frequently used training implements, and the midthigh pull (MTP) and deadlift (DL) are 2 popular exercises. Therefore, the purpose of this study was to compare force between an HBar and OBar for a MTP, DL, and countermovement jump (CMJ)...
January 2017: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/26840440/an-examination-of-muscle-activation-and-power-characteristics-while-performing-the-deadlift-exercise-with-straight-and-hexagonal-barbells
#12
COMPARATIVE STUDY
Kevin D Camara, Jared W Coburn, Dustin D Dunnick, Lee E Brown, Andrew J Galpin, Pablo B Costa
The deadlift exercise is commonly performed to develop strength and power, and to train the lower-body and erector spinae muscle groups. However, little is known about the acute training effects of a hexagonal barbell vs. a straight barbell when performing deadlifts. Therefore, the purpose of this study was to examine the hexagonal barbell in comparison with the straight barbell by analyzing electromyography (EMG) from the vastus lateralis, biceps femoris, and erector spinae, as well as peak force, peak power, and peak velocity using a force plate...
May 2016: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/25486301/optimal-loading-range-for-the-development-of-peak-power-output-in-the-hexagonal-barbell-jump-squat
#13
JOURNAL ARTICLE
Thomas S Turner, Daniel P Tobin, Eamonn Delahunt
Recent studies indicate that the utilization of the hexagonal barbell jump squat (HBJS) compared with the traditional barbell jump squat may offer a superior method of developing peak power. The notion that a single optimal load may be prescribed in training programs aiming to develop peak power is subject to debate. The purpose of this study was to identify the optimal load corresponding with peak power output during the HBJS in professional rugby union players. Seventeen professional rugby union players participated in this study...
June 2015: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/25436621/peak-power-in-the-hexagonal-barbell-jump-squat-and-its-relationship-to-jump-performance-and-acceleration-in-elite-rugby-union-players
#14
JOURNAL ARTICLE
Thomas S Turner, Daniel P Tobin, Eamonn Delahunt
Recent research suggests that jump squats with a loaded hexagonal barbell are superior for peak power production to comparable loads in a traditional barbell loaded jump squat. The aim of this study was to investigate the relationship between relative peak power output during performance of the hexagonal barbell jump squat (HBJS), countermovement jump (CMJ) height, and linear acceleration speed in rugby union players. Seventeen professional rugby union players performed 10- and 20-m sprints, followed by a set of 3 unloaded CMJs and a set of 3 HBJS at a previously determined optimal load corresponding with peak power output...
May 2015: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/22446664/effect-of-load-positioning-on-the-kinematics-and-kinetics-of-weighted-vertical-jumps
#15
JOURNAL ARTICLE
Paul A Swinton, Arthur D Stewart, Ray Lloyd, Ioannis Agouris, Justin W L Keogh
One of the most popular exercises for developing lower-body muscular power is the weighted vertical jump. The present study sought to examine the effect of altering the position of the external load on the kinematics and kinetics of the movement. Twenty-nine resistance-trained rugby union athletes performed maximal effort jumps with 0, 20, 40, and 60% of their squat 1 repetition maximum (1RM) with the load positioned (a) on the posterior aspect of the shoulder using a straight barbell and (b) at arms' length using a hexagonal barbell...
April 2012: Journal of Strength and Conditioning Research
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