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European Journal of Physical Education and Sport Science ISSN: 2501 - 1235 ISSN-L: 2501 - 1235 Available on-line at: www.oapub.org/edu Volume 3 │Issue 12 │2017 doi: 10.5281/zenodo.1050405 EFFECTS OF WHOLE-BODY VIBRATION OVER DELAYED-ONSET MUSCLE SORENESS IN PHYSICAL ACTIVE PERSONS Da Silva U.1i, Ortega D. J.2 Department of Physical Education, 1 Sport and Human Movement Autonomous University of Madrid, Spain Department of Physical Education, 2 University Pablo de Olavide, Seville, Spain Abstract: The aim of this study was to investigate the effects of vibratory platform upon delayedonset muscle soreness in physically active persons. 24 volunteers were recruited and randomly divided in 3 different groups: control, vibratory platform before exercise, vibratory platform after exercise. Volunteers were submitted to physical training to induce muscle pain. Pain sensation and muscular flexibility were valued in 3 consecutive days. Vibratory platform was able to reduce significantly muscle pain in both platform groups and there were no changes in muscular flexibility in any group. Keywords: vibratory platform, DOMS, WBV, flexibility 1. Introduction Muscle pain can be very disturbing and endure to an important disability in athletes. Delayed-onset muscle soreness (DOMS) caused by exercise use to appear between 24-48 hours after training and use to last between 5-7 days [1]. For many athletes this time can compromise their campaign and good results. Lots of muscular recovery strategies have been utilized to minimize pain symptom in physical training [2]. Normally, DOMS can be evidenced by muscular flexibility and strength and the gold standard treatment consist in rest, ice, anti-inflammatory drugs, therapeutic ultrasonic, electrical stimulation, massage and vibratory platform therapy [1]. Copyright © The Author(s). All Rights Reserved. © 2015 – 2017 Open Access Publishing Group 26 Da Silva U., Ortega D. J. EFFECTS OF WHOLE-BODY VIBRATION OVER DELAYED-ONSET MUSCLE SORENESS IN PHYSICAL ACTIVE PERSONS During the last decade, a new treatment based on application of mechanical waves, called whole-body vibration WBV, was introduced to increase muscular ability to generate forces in human body [3-5]. WBV activate muscles mechanically through reflex response [6, 7]. Knowing that Whole-body vibration (WBV) increases muscle function, is possible to think that this therapy could be effective preventing muscle injuries once it increases motor unit synchronization reducing miofibrilar stress during exercise in eccentric contraction. Actually, WBV has been suggested to solve this problem [8]. Scientific evidences that ensure benefit effects of WBV over muscular affections are still skimp. In 2007, a study of Bakhtiary investigated the benefit effects of vibratory platform applied before physical training to reduce effects of DOMS in sedentary individuals. They found a significant reduction in muscle pain and suggest that more similar studies need to be done in athletes due to their different muscular condition [9]. Another study written by Atefh (2012) investigated the effects of vibratory platform applied before exercise training to reduce effects of DOMS in sedentary persons. The results were positive for their hypothesis and they suggest that more similar studies need to be done with athletes and physical active persons to compare the effects in a different muscular condition [10]. Atefh developed another study where they investigated WBV efficiency, applied before exercise training, over DOMS in sedentary individuals. They found a reduction in Creatine Kinase levels and muscle pain although they haven’t found any changes in muscle flexibility. Based on this findings, is recommended to reproduce this kind of study in athletes because there are no studies with this public [11]. A study written by Wheeler and Jacobson (2013) investigated vibratory platform effects over DOMS induced by two different kind of training: high and low intensity. DOMS was induced in sedentary young people and they were divided in control group and WBV after exercise group. They valued the effects of DOMS over muscular flexibility of hamstrings and muscle pain using a visual analog pain scale. The measures were taken immediately after WBV in four consecutive days. As result, they found that WBV is effective over DOMS and muscular flexibility in both cases: high and low intensity exercises [12]. A study written by Rhea (2009) investigated the effects of vibratory platform applied after exercise training in sedentary individuals and they found significant relieve of DOMS symptoms predicating this treatment as an efficient method to reduce DOMS [1]. European Journal of Physical Education and Sport Science - Volume 3 │ Issue 12 │ 2017 27 Da Silva U., Ortega D. J. EFFECTS OF WHOLE-BODY VIBRATION OVER DELAYED-ONSET MUSCLE SORENESS IN PHYSICAL ACTIVE PERSONS This study intends to promote a new propose of treatment to a very common affection, using a tool that is well expanded on market being accessible to a plant of persons: the vibratory platform. WBV has the benefit of not be an invasive procedure, no pain, low cost and have other certificate scientifically positive effects like increase of bone tissue, increase of muscle strength and increase of performance. Beyond, it has a lot of uses and benefits in sports like maximization of muscle performance, improvement of neuromuscular respond and aerobic capability [13-20]. WBV was well studied in sedentary persons. On the other hand, literature suggests that another public with different muscular condition, like athletes and physical active persons, may present dissimilar responses [11]. For viewing / downloading the full article, please access the following link: https://oapub.org/edu/index.php/ejep/article/view/1188 European Journal of Physical Education and Sport Science - Volume 3 │ Issue 12 │ 2017 28