When muscles move they make a sound. The sliding filaments of muscles make a ‘rumbling’ noise. A noise that is likely far from your thoughts when ‘listening to your body’! Research in 1980 found a rumbling noise from sustained muscular contraction (1). Tight musculature is muscle that sustains it’s contraction in a sense of never really switching off and potentially working against itself.
Recent research shows there to be a change in the noise of the body with disease progression. The Belle Dume or muscular noise could reveal disease progression was reported in New Scientist (May 2007). A report based upon research published in the journal Applied Physics Letters describing a relationship between muscular noise and disease through the study of phonomyography.
When your chiropractor next utilises their tuning fork on your body to retune you they may not be kidding. Applying vibration to tendons can mimic muscle belly contraction. As a muscle tenses it causes vibration along the spiders web of fascia creating a muscular sound. This is why ultrasound is good for tendinopathies’, because it is a sound (noise) based intervention to improve your muscle and joint health.
1. Oster G (1980) Low Frequency Sounds from Sustained Contraction of Human Skeletal Muscle. Journal of Biophysics 30 119-127