Effects of short- and long-term vibration therapy on maximum voluntary isometric contraction and muscle activity in quadriceps and antagonist muscles.
Kodai Miyara, Yushin Yoshizato, Takaki Imai and 2 others
PMID 41036521WHAT IT FOUND
Five minutes of vibration on the quadriceps muscle increased maximum knee extension strength in healthy men.
Fifteen seconds of vibration had no effect. This was measured immediately after the vibration stopped, not during it.
Key findings
01Long-term (5 min) vibration significantly increased knee extension maximum voluntary isometric contraction compared to control.
02Short-term (15 s) vibration did not affect maximum strength or muscle activity.
03Vibration did not change antagonist muscle activity or indicate muscle fatigue.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study was performed on healthy young men, so the results may not apply to patients with stroke or other neurological conditions. Strength was measured immediately after vibration, so the duration of any effect is unknown. The study did not measure strength during the vibration itself, only the residual effect after it stopped. The sample size was small (18 participants).
Declared interests
The work was supported by the MIKIYA Science and Technology Foundation. The authors declared no conflict of interest.
The easy way to misread this
Do not assume this vibration method will improve motor function in stroke patients. The study tested healthy men and found only an immediate, transient increase in strength, not a lasting functional change.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →