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Effects of replacing free weights with elastic band resistance in squats on trunk muscle activation.
J Strength Cond Res. 2014 Nov; 28(11):3056-62.JS

Abstract

The purpose of this study was to assess the effects of adding elastic bands to free-weight squats on the neuromuscular activation of core muscles. Twenty-five resistance trained women with 4.6 ± 2.1 years of resistance training experience participated in the study. In randomized order, the participants performed 6 repetition maximum in free-weight squats, with and without elastic bands (i.e., matched relative intensity between exercises). During free-weight squats with elastic bands, some of the free weights were replaced with 2 elastic bands attached to the lowest part of the squat rack. Surface electromyography (EMG) activity was measured from the erector spinae, external oblique, and rectus abdominis, whereas a linear encoder measured the vertical displacement. The EMG activities were compared between the 2 lifting modalities for the whole repetition and separately for the eccentric, concentric, and upper and lower eccentric and concentric phases. In the upper (greatest stretch of the elastic band), middle, and lower positions in squats with elastic bands, the resistance values were approximately 117, 105, and 93% of the free weight-only trial. Similar EMG activities were observed for the 2 lifting modalities for the erector spinae (p = 0.112-0.782), external oblique (p = 0.225-0.977), and rectus abdominis (p = 0.315-0.729) in all analyzed phases. In conclusion, there were no effects on the muscle activity of trunk muscles of substituting some resistance from free weights with elastic bands in the free-weight squat.

Authors+Show Affiliations

1Faculty of Teacher Education and Sport, Sogn og Fjordane University College, Norway; 2Department of Public Health and General Practice, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway; and 3Hysnes Rehabilitation Center, St. Olav's University Hospital, Trondheim, Norway.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24832981

Citation

Saeterbakken, Atle H., et al. "Effects of Replacing Free Weights With Elastic Band Resistance in Squats On Trunk Muscle Activation." Journal of Strength and Conditioning Research, vol. 28, no. 11, 2014, pp. 3056-62.
Saeterbakken AH, Andersen V, Kolnes MK, et al. Effects of replacing free weights with elastic band resistance in squats on trunk muscle activation. J Strength Cond Res. 2014;28(11):3056-62.
Saeterbakken, A. H., Andersen, V., Kolnes, M. K., & Fimland, M. S. (2014). Effects of replacing free weights with elastic band resistance in squats on trunk muscle activation. Journal of Strength and Conditioning Research, 28(11), 3056-62. https://doi.org/10.1519/JSC.0000000000000516
Saeterbakken AH, et al. Effects of Replacing Free Weights With Elastic Band Resistance in Squats On Trunk Muscle Activation. J Strength Cond Res. 2014;28(11):3056-62. PubMed PMID: 24832981.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of replacing free weights with elastic band resistance in squats on trunk muscle activation. AU - Saeterbakken,Atle H, AU - Andersen,Vidar, AU - Kolnes,Maria K, AU - Fimland,Marius S, PY - 2014/5/17/entrez PY - 2014/5/17/pubmed PY - 2015/11/17/medline SP - 3056 EP - 62 JF - Journal of strength and conditioning research JO - J Strength Cond Res VL - 28 IS - 11 N2 - The purpose of this study was to assess the effects of adding elastic bands to free-weight squats on the neuromuscular activation of core muscles. Twenty-five resistance trained women with 4.6 ± 2.1 years of resistance training experience participated in the study. In randomized order, the participants performed 6 repetition maximum in free-weight squats, with and without elastic bands (i.e., matched relative intensity between exercises). During free-weight squats with elastic bands, some of the free weights were replaced with 2 elastic bands attached to the lowest part of the squat rack. Surface electromyography (EMG) activity was measured from the erector spinae, external oblique, and rectus abdominis, whereas a linear encoder measured the vertical displacement. The EMG activities were compared between the 2 lifting modalities for the whole repetition and separately for the eccentric, concentric, and upper and lower eccentric and concentric phases. In the upper (greatest stretch of the elastic band), middle, and lower positions in squats with elastic bands, the resistance values were approximately 117, 105, and 93% of the free weight-only trial. Similar EMG activities were observed for the 2 lifting modalities for the erector spinae (p = 0.112-0.782), external oblique (p = 0.225-0.977), and rectus abdominis (p = 0.315-0.729) in all analyzed phases. In conclusion, there were no effects on the muscle activity of trunk muscles of substituting some resistance from free weights with elastic bands in the free-weight squat. SN - 1533-4287 UR - https://www.unboundmedicine.com/medline/citation/24832981/Effects_of_replacing_free_weights_with_elastic_band_resistance_in_squats_on_trunk_muscle_activation_ L2 - https://doi.org/10.1519/JSC.0000000000000516 DB - PRIME DP - Unbound Medicine ER -