Effects on muscle activities according to the type of bodyblade exercise in quadruped position.
Jeong-Il Kang, Joon-Su Park, Dae-Keun Jeong and 3 others
PMID 29950781WHAT IT FOUND
In healthy men, lifting the leg opposite the arm while holding a vibrating bar vertically recruited the serratus anterior more than other positions.
However, internal oblique activity was lower in this position than in parallel leg lifts. The upper trapezius did not change between exercises.
Key findings
01Serratus anterior muscle activity was significantly higher during vertical bodyblade exercises (crossed and parallel leg lifts) compared to horizontal exercises.
02Internal oblique muscle activity on the dominant side was significantly lower during parallel leg lifts compared to crossed leg lifts.
03The ratio of serratus anterior to upper trapezius activity was significantly greater in vertical exercises compared to horizontal exercises.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study included only healthy young males, so results may not apply to patients with shoulder pain, scapular winging, or other pathologies. Muscle activity was measured on the dominant side only; contralateral internal oblique activity was not assessed. The study design did not include a control group or compare the bodyblade to non-vibrating alternatives in this specific position.
Declared interests
Funded by the Sehan University Research Fund in 2018. No other conflicts of interest declared.
The easy way to misread this
Do not interpret the increased serratus anterior activity as evidence of improved shoulder function or pain reduction. The study measured muscle activation in healthy individuals, not clinical outcomes in patients with shoulder pathology.