In all following trials vibration massage was applied to muscles. Joint ranges of motion were measured, with increase being due to a lengthening of muscles allowing the joint to move further,
Trial One (1)
Knee extension was measured with the hip flexed to 90 degrees. Multiple applications of 50 Hz (cycles per second) massage were applied to the hamstring muscles over a eight week period. Compared with the control group the massage group had an average increase of 13-14 degrees.
Trial Two (2)
Hip flexion was measured by attempting to touch ones toes. For the massage group a 44 Hz massage was applied each day to the hamstrings for three days. A stretching group used conventional stretches each day, while a third group acted as a control. Both the stretching and massage groups showed a similar significant improvement in hip joint ROM
Trial Three (3)
This trial used the toe touching measurement and hamstring massage. Vibration massage was used with unspecified protocol on the hamstrings and erector spinae muscles. The massage group showed a 5cm improvement as compared to the controls.
Trial Four (4)
In this trial a straight leg raise (SLR) was measured. A proprietary device called “Deep Oscillation” was used. This is a device that has a pad that applies to the skin. The makers claim that it’s therapeutic affect is from mechanical vibrations that penetrate. From what I understand the pad creates an electrostatic attraction to the skin that switches on and off. It works like having a vacuum cleaner on your skin switching on and off very fast creating a vibration. In other words, it’s an impressive looking, patentable and very expensive way to create a simple mechanical vibration. Anyway, the Deep Oscillation group had an increase in SLR over the controls.
(1) Bakhtiary AH1, Fatemi E, Khalili MA, Ghorbani R. Localised application of vibration improves passive knee extension in women with apparent reduced hamstring extensibility: a randomised trial. J Physiother. 2011;57(3):165-71
(2) J. Atha and D. W. Wheatley Joint mobility changes due to low frequency vibration and stretching exercise* Br J Sports Med. 1976 Mar; 10(1): 26–34.
(3) Beirman W. INfluence of Cycloid Vibration Massage on Trunk Flexion American Journal of Physical Medicine: December 1960 - Volume 39 - Issue 6 - ppg 219-224
(4) Hinman, M. R., Lundy, R., Perry, E., Robbins, K., & Viertel, L. (2013). Comparative effect of ultrasound and deep oscillation on the extensibility of hamstring muscles. Journal of Athletic Medicine, 1