Hamstring myoelectrical activity during three different kettlebell swing exercises

Michael J Del Monte, David A Opar, Ryan G Timmins, James Ross, Justin Wl Keogh, Christian Lorenzen

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Abstract

Kettlebell exercises have become an increasingly popular form of resistance training and component of lower body rehabilitative training programs; despite a lack of scientific literature illustrating internal mechanisms and effectiveness of these approaches. Participants (n=14) performed three different styles of kettlebell swings (hip hinge, squat and double knee extension) and were assessed for medial hamstrings (MH) and biceps femoris (BF) myoelectrical activity via surface electromyography (sEMG). Bipolar pre-gelled Ag/AgCl surface electromyography (sEMG) electrodes (10mm diameter, 20mm inter-electrode distance) were placed on the participant's dominant limb after correct skin preparation.There was a main effect for swing type (p = 0.004), where the hip hinge swing elicited a greater overall MH and BF sEMG in comparison to the squat swing (mean difference = 3.92; 95% CI = 1.53 to 6.32; p = 0.002) and the double knee extension swing (mean difference = 5.32; 95% CI = 0.80 to 9.83; p = 0.020). Across all swing types, normalised percentage of MH sEMG was significantly higher compared to the BF (mean difference = 9.93; 95% CI = 1.67 to 18.19; p = 0.022). The hip hinge kettlebell swing produced the greatest amount of hamstring sEMG for the three styles of kettlebell swings assessed. These findings have implications for the application of kettlebell swing exercises in strength and conditioning, injury prevention and rehabilitation programs.

Original languageEnglish
JournalJournal of Strength and Conditioning Research
DOIs
Publication statusE-pub ahead of print - 11 Sep 2017

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Electromyography
Hip
Knee
Electrodes
Literature
Resistance Training
Rehabilitation
Extremities
Education
Skin
Wounds and Injuries
Hamstring Muscles

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Del Monte, Michael J ; Opar, David A ; Timmins, Ryan G ; Ross, James ; Keogh, Justin Wl ; Lorenzen, Christian. / Hamstring myoelectrical activity during three different kettlebell swing exercises. In: Journal of Strength and Conditioning Research. 2017.
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abstract = "Kettlebell exercises have become an increasingly popular form of resistance training and component of lower body rehabilitative training programs; despite a lack of scientific literature illustrating internal mechanisms and effectiveness of these approaches. Participants (n=14) performed three different styles of kettlebell swings (hip hinge, squat and double knee extension) and were assessed for medial hamstrings (MH) and biceps femoris (BF) myoelectrical activity via surface electromyography (sEMG). Bipolar pre-gelled Ag/AgCl surface electromyography (sEMG) electrodes (10mm diameter, 20mm inter-electrode distance) were placed on the participant's dominant limb after correct skin preparation.There was a main effect for swing type (p = 0.004), where the hip hinge swing elicited a greater overall MH and BF sEMG in comparison to the squat swing (mean difference = 3.92; 95{\%} CI = 1.53 to 6.32; p = 0.002) and the double knee extension swing (mean difference = 5.32; 95{\%} CI = 0.80 to 9.83; p = 0.020). Across all swing types, normalised percentage of MH sEMG was significantly higher compared to the BF (mean difference = 9.93; 95{\%} CI = 1.67 to 18.19; p = 0.022). The hip hinge kettlebell swing produced the greatest amount of hamstring sEMG for the three styles of kettlebell swings assessed. These findings have implications for the application of kettlebell swing exercises in strength and conditioning, injury prevention and rehabilitation programs.",
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Hamstring myoelectrical activity during three different kettlebell swing exercises. / Del Monte, Michael J; Opar, David A; Timmins, Ryan G; Ross, James; Keogh, Justin Wl; Lorenzen, Christian.

In: Journal of Strength and Conditioning Research, 11.09.2017.

Research output: Contribution to journalArticleResearchpeer-review

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