What specific physiological impact was Dr. J. Warren Jacobs investigating around 1906?

Answer

How mechanical vibration impacted muscle activity and strength

As the 20th century began, the focus in vibration study shifted away from the generalized complex movements produced by Zander's apparatuses toward isolating the precise effects of vibration itself. Dr. J. Warren Jacobs, around 1906, conducted studies specifically aimed at determining how mechanical vibration influenced muscle activity levels and overall strength capacity. This research was instrumental in moving the field from viewing these tools as general exercise substitutes toward a genuine biophysical investigation into the physiological reactions elicited by localized or whole-body shaking.

What specific physiological impact was Dr. J. Warren Jacobs investigating around 1906?
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