Comparison of Kinematics and Muscle Activation in Free-Weight Back Squat With and Without Elastic Bands

Journal of Strength and Conditioning Research
Atle Hole SaeterbakkenRoland van den Tillaar

Abstract

The purpose of the study was to compare kinematic muscle activation when performing 6 repetition maximum (6RM) squats using constant (free weights) or variable resistance (free weights + elastic bands). Twenty recreationally trained women were recruited with 4.6 ± 2.1 years of resistance training experience and a relative strength (6RM/body mass) of 1.1. After a familiarization session identifying the 6RM loads, the participants performed 6RM squats using constant and variable resistance in a randomized order. The total resistance in the variable resistance group was similar to the constant resistance in the presticking region (98%), but greater in the sticking region (105%) and the poststicking region (113%). In addition, the presticking barbell velocity was 21.0% greater using variable than constant resistance, but 22.8% lower in the poststicking region. No significant differences in muscle electromyographic activity, time occurrence, and vertical displacement between the squat modalities were observed, except for higher barbell displacement poststicking using variable resistance. It was concluded that, due to differences in total resistance in the different regions performing variable compared with constant resistance, great...Continue Reading

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Citations

Jan 27, 2018·Sports Medicine·Timothy J SuchomelMichael H Stone
Jun 21, 2018·Journal of Human Kinetics·Roland van den Tillaar, Atle Hole Saeterbakken
May 17, 2019·PloS One·Roland van den TillaarAtle Hole Saeterbakken
Jul 10, 2020·PloS One·Atle Hole SaeterbakkenTom Erik Jorung Solstad
May 26, 2017·Journal of Strength and Conditioning Research·Josinaldo J da SilvaPaulo H Marchetti
Jun 20, 2020·PeerJ·Michal MurawaMatteo Zago
May 27, 2017·Applied Bionics and Biomechanics·Hasan U Yavuz, Deniz Erdag
Dec 22, 2020·Frontiers in Sports and Active Living·Roland van den TillaarStian Larsen
Apr 29, 2021·Sports Health·Rodrigo Martín-San AgustínMariana Sánchez-Barbadora
Jun 26, 2021·Frontiers in Sports and Active Living·Stian LarsenRoland van den Tillaar
Aug 28, 2021·International Journal of Environmental Research and Public Health·Eirik KristiansenRoland van den Tillaar

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