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Göteborgs universitets publikationer

Acute Effects of Whole-Body Vibration on Trunk and Neck Muscle Activity in Consideration of Different Vibration Loads

Författare och institution:
Dennis Perchthaler (-); Simon Hauser (-); Hans-Christian Heitkamp (-); Tobias Hein (Institutionen för kost- och idrottsvetenskap); Stefan Grau (Institutionen för kost- och idrottsvetenskap)
Publicerad i:
Journal of Sports Science and Medicine, 14 ( 1 ) s. 155-162
Artikel, refereegranskad vetenskaplig
Sammanfattning (abstract):
The intention of this study was to systematically analyze the impact of biomechanical parameters in terms of different peakto- peak displacements and knee angles on trunk and neck muscle activity during whole-body vibration (WBV). 28 healthy men and women (age 23 ± 3 years) performed four static squat positions (2 peak-to-peak displacements x 2 knee angles) on a side alternating vibration platform with and without vibration stimulus. Surface electromyography (EMG) was used to record the neuromuscular activity of the erector spinae muscle, the rectus abdominis muscle, and of the splenius muscle. EMG levels normalized to maximal voluntary contractions ranged between 3.2 – 27.2 % MVC during WBV. The increase in muscle activity caused by WBV was significant, particularly for the back muscles, which was up to 19.0 % MVC. The impact of the factor ‘condition’ (F-values ranged from 13.4 to 132.0, p ≤ 0.001) and of the factor ‘peak-to-peak displacement’ (F-values ranged from 6.4 to 69.0 and p-values from < 0.001 to 0.01) were statistically significant for each muscle tested. However, the factor ‘knee angle’ only affected the back muscles (F-value 10.3 and 7.3, p ≤ 0.01). The results of this study should give more information for developing effective and safe training protocols for WBV treatment of the upper body.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Hälsovetenskaper ->
Vibration, electromyography, torso, paraspinal muscles.
Postens nummer:
Posten skapad:
2015-02-04 11:16
Posten ändrad:
2015-03-23 13:56

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