Acute Effects of Whole Body Vibration on Shoulder Muscular Strength and Joint Position Sense

Abstract

Acute Effects of Whole Body Vibration on Shoulder Muscular Strength and Joint Position Sense Functional changes following whole body vibration (WBV) training have been attributed to adaptations in the neuromuscular system. However, these changes have mainly been observed in the lower extremity with minimal change to the upper extremity. The purpose of the study is to examine the acute effect of shoulder vibration on joint position sense and selected muscle performance characteristics (peak torque, time to peak torque, and power). Forty young individuals (19.84 ± 1.73 yrs, 171.41 ± 7.73 cm, 70.07 ± 9.32 kg) with no history of upper body injuries were randomly assigned to an experimental (Vibration) or control (No-Vibration) group. To assess shoulder proprioception, active and passive joint position senses were measured on both internal and external rotation of the shoulder. The muscle performance variables (peak torque and time to peak torque) were measured using isokinetic dynamometer with the velocity of 60°/sec. After three bouts of 1 minute vibration training, the experimental group demonstrated a significant improvement in the internal rotation peak torque, time to peak torque and external rotation time to peak torque (p<0.05). However, no-significant differences were revealed for joint position sense, external rotation peak torque, and time to peak torque between the groups. Our findings suggest that short bouts of vibration treatment have a significant effect on shoulder muscle characteristics.

EMG activity of upper limb on spinal cord injury individuals during whole-body vibration

“…Our study is in agreement with the previous studies that also found an increase of EMG activity during WBV over upper limb muscles (8,9,11,15) confirming that WBV is an effective tool to increase the muscular activity of upper limb. This study has shown that WBV is also effective in distinct subjects other than healthy, who have been the focus of studies until this point.…”

“…WBV applied over upper limbs has increased the muscular performance and EMG activity in a healthy population (8)(9)(10)(11)15).…”

The effect of combined exercise with slings and a flexi-bar on muscle activity and pain in rotator cuff repair patients

“…This caused an imbalance in the shoulder muscles and even caused pain14 ) . According to a study by Hong et al15 ) , the torque of motion in shoulder joints significantly increased after vibrations were applied their subjects via a vibration platform. According to a study by Kirkesola16 ) , when a sling was used for vibration exercise, it was found that incorrect neuromuscular control could be corrected, thereby reducing muscle imbalance.…”

Flexibility: components, proprioceptive mechanisms and methods

“…Controlling the range of motion and muscle tension, and limiting the arc of joint motion, aimed at preventing injuries, is mostly due to the action of the nervous system. Proprioception in this system may be associated with joints or muscles [12].…”