Acute effect of whole body vibration on isometric strength, squat jump, and flexibility in well-trained combat athletes

Abstract

The purpose of this study was to investigate the effect of whole body vibration (WBV) training on maximal strength, squat jump, and flexibility of well-trained combat athletes. Twelve female and 8 male combat athletes (age: 22.8 ± 3.1 years, mass: 65.4 ± 10.7 kg, height: 168.8 ± 8.8 cm, training experience: 11.6 ± 4.7 years, training volume: 9.3 ± 2.8 hours/week) participated in this study. The study consisted of three sessions separated by 48 hours. The first session was conducted for familiarization. In the subsequent two sessions, participants performed WBV or sham intervention in a randomized, balanced order. During WBV intervention, four isometric exercises were performed (26 Hz, 4 mm). During the sham intervention, participants performed the same WBV intervention without vibration treatment (0 Hz, 0 mm). Hand grip, squat jump, trunk flexion, and isometric leg strength tests were performed after each intervention. The results of a two-factor (pre-post[2] × intervention[2]) repeated measures ANOVA revealed a significant interaction (p = 0.018) of pre-post × intervention only for the hand grip test, indicating a significant performance increase of moderate effect (net increase of 2.48%, d = 0.61) after WBV intervention. Squat jump, trunk flexion, and isometric leg strength performances were not affected by WBV. In conclusion, the WBV protocol used in this study potentiated hand grip performance, but did not enhance squat jump, trunk flexion, or isometric leg strength in well-trained combat athletes.

Effects of Whole Body Vibration Intervention on Handgrip Strength of Brazilian Healthy Soldiers

“…WBV can potentiate handgrip performance, according to Kurt et al (2015). The results revealed a significant interaction of pre-post × intervention for the handgrip test, indicating a significant performance increase of moderate effect after WBV intervention.…”

“…Studies have also described important effects of vibration exposure on upper body muscular activity, as an increase in skeletal muscle activity in the arms (Marín et al, 2015;Marín et al, 2011;Marín et al, 2013) and on the handgrip strength (Giminiani et al, 2014;Kurt et al, 2015) .…”

Associations among handgrip strength, dietary pattern, and physical activity level in Physical Education students.

“…Grip tests were performed at standing position, with the shoulder adducted and neutrally rotated, and the elbow in full extension (Saha, 2014). The peak isometric force generated was quantified by multiplying the maximal measurement detected by the dynamometer by 9.81 m•s−2 (gravitational constant) in order to convert kilograms into Newtons (Kurt & Pekünlü, 2015).…”

Analysis of trunk and lower extremity electromyographic activity in horizontal whole-body vibration

“…A previous study compared the difference in electromyographic muscle activity between a group of healthy adults taking both isometric exercise and WBV on a vertical vibrating platform (a synchronous device) and another group taking the isometric exercise only, and reported that the former showed the most significant improvement in hand grasp strength (Dallas et al, 2013;Kurt & Pekünlü, 2015) . applied a vertical vibrating platform to athletes in a squat position of isolated and isometric contractions, and reported a significant improvement in the squat jump in contrast to the control group.…”

“…Whole-Body Vibration (WBV) has been extensively investigated as a widely used training tool (Kurt & Pekünlü, 2015). A WBV device delivers vibration to the whole body on a synchronous vibration platform or side alternating vibration platform (Cardinale & Wakeling, 2005;Rauch et al, 2010).…”