Power Plate Scientific Validation Osteoarthritis

Effect of Whole-Body Vibration Training on Muscle Activation for Individuals with Knee Osteoarthritis (KOA)

J, et al. BioMed Research International, vol. 2021, Article ID 6671390, 8 pages, 2021

Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, 200438 Shanghai, China

This was a cross-sectional study aimed at observing the effects of different vibration frequencies and knee flexion angles on the activation of lower extremity muscles in 26 patients with KOA. Enrolled participants received WBV training at 0, 30, and 60° knee flexion angles with vibration frequencies of 0, 5, 10, and 20 Hz.



At 0, 5, 10, and 20 Hz, the angle induced a significant difference on Vastus Medialis (VM) activation, and the EMG%MVC of VM increased with the angle and at 60° knee angle, the EMG%MVC of VM was the highest

Results showed that in the range of 0-20 Hz, activation rates of muscles, gradually increased with vibration frequency

The neuromuscular activity was highest at 20 Hz, regardless of the knee angle

If an individual with KOA does not have a large ROM of the knee joint, then muscle activation can be increased by appropriately increasing the WBV frequency

The neuromuscular system is stimulated to generate additional muscle activity and power, therefore, WBV is suitable for the elderly who cannot perform resistance training

WBV training at 20 Hz was the most effective for activation of knee flexor and extensor muscles in patients with KOA, and static squatting at 60° was the most suitable for WBV training

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