The effects of pre-exercise vibration stimulation on the exercise-induced muscle damage.
Ji-Yun Kim, Da-Haeng Kang, Joon-Hee Lee and 2 others
PMID 28210056WHAT IT FOUND
In 30 healthy young men, five minutes of 60-Hz biceps vibration before eccentric elbow exercise had higher pressure-pain threshold values and lower blood CK and LDH at 24, 48, and 72 hours than no vibration or vibration after exercise.
Key findings
01The vibration-before-exercise group had the highest pressure-pain threshold values after exercise-induced muscle damage.
02At 48 hours, CK was 130.7 ± 4.6 U/L in the vibration-before-exercise group and 433.3 ± 8.0 U/L in the control group.
03At 72 hours, LDH was 345.3 ± 54.5 U/L in the vibration-before-exercise group and 2,034.1 ± 207.4 U/L in the control group.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
Only 30 healthy male adults in their 20s were studied, so it does not show effects in women, older adults, or people with neck or shoulder disorders. The follow-up was only 72 hours, and the paper does not report dropouts, blinding, or how randomisation was concealed. The outcomes were pressure-pain threshold and blood CK and LDH, not function, soreness, injury, or long-term recovery. The control group received no intervention, so the study does not compare vibration with stretching, ultrasound, or micro-current.
The easy way to misread this
Do not conclude that vibration prevents muscle damage in patients. It was tested in 30 healthy young men after a single elbow exercise, and the outcomes were pressure-pain threshold and blood CK and LDH over 72 hours, not function or injury.