J Korean Phys Ther.  2022 Oct;34(5):267-271. 10.18857/jkpt.2022.34.5.267.

The Effect of One Leg Deadlift Exercise on the Muscle Activity of Lower Extremities according to the Weight Characteristics

• Park TG
• Lee JK

• KMID: 2536784
• DOI: http://doi.org/10.18857/jkpt.2022.34.5.267

Abstract

Purpose
This study examined the effects of a kettlebell and aqua bag on the gluteus maximus, gluteus medius, and vastus medialis lower extremity muscle strength during a one-leg deadlift, a top-down exercise.
Methods
Twenty healthy adults were enrolled in the one-leg deadlift exercise under two conditions. The muscle activity of the gluteus maximus, gluteus medius, and vastus medialis was measured by surface electromyography (S-EMG). A paired t-test was used for statistical analysis, and the statistical significance criteria were set to p < 0.05.
Results
A comparison of the muscle activity according to the degree of contraction of the gluteus maximus revealed low muscle activity in AD exercise compared to KD exercise (p < 0.05), and there was no significant difference in the gluteus medius and vastus medialis (p < 0.05).
Conclusion
These results suggest that when the one-leg deadlift exercise is performed according to the weight characteristics, the gluteus maximus is suitable for intervention using a kettlebell, and the gluteus medius and vastus medialis are more suitable for intervention by providing instability using an aqua bag.

Keyword

Kettlebell; Aqua bag; One leg deadlift; Top-down