![Influence of vertical and horizontal whole-body vibration on selected muscles tension of employees age 50+ in relation to professional exposure to vibration (pilot study) | Extrica - Publisher of International Research Journals Influence of vertical and horizontal whole-body vibration on selected muscles tension of employees age 50+ in relation to professional exposure to vibration (pilot study) | Extrica - Publisher of International Research Journals](https://static-01.extrica.com/articles/20854/20854-ga.png)
Influence of vertical and horizontal whole-body vibration on selected muscles tension of employees age 50+ in relation to professional exposure to vibration (pilot study) | Extrica - Publisher of International Research Journals
![A horizontal platform vibrate up and down with a simple harmonic motion of amplitude 20 c.m. At what frequency will an object kept on the platform remain just in contact with the A horizontal platform vibrate up and down with a simple harmonic motion of amplitude 20 c.m. At what frequency will an object kept on the platform remain just in contact with the](https://d10lpgp6xz60nq.cloudfront.net/web-thumb/12009433_web.png)
A horizontal platform vibrate up and down with a simple harmonic motion of amplitude 20 c.m. At what frequency will an object kept on the platform remain just in contact with the
![Influence of vertical and horizontal whole-body vibration on selected muscles tension of employees age 50+ in relation to professional exposure to vibration (pilot study) | Extrica - Publisher of International Research Journals Influence of vertical and horizontal whole-body vibration on selected muscles tension of employees age 50+ in relation to professional exposure to vibration (pilot study) | Extrica - Publisher of International Research Journals](https://static-01.extrica.com/articles/20854/20854-ga_tn.jpg)