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ABSTRACT Background: Warm up exercise is the basics for many kinds of physical activities for our body structure that helps to function effectively. A good warm up exercises should accomplish important aspects that include, stretching the body muscles and maintaining adequate breath, preparing the articulators and resonators. Similarly for the voice production and better functioning of the vocal folds, vocal warm up exercises plays a major role. Healthy vocal warm up exercises helps in stretching out the muscle and relaxing the vocal fold that in turn reduces laryngeal muscle tension. Also few exercises help the muscles to get stimulated and make them ready for the active functioning. Along with warm ups, hydration plays an important role in maintaining the overall vocal hygiene and helps in immediate humidification on the vocal folds. Need for the study: The hydration intervention was found to be effective in professional voice users as in singers, as it helps in increasing the production of a thin and non-viscous layer of mucus covering the laryngeal structures. But the application of hydration on voice production is still in controversy, in view of lack of scientific evidences on effectiveness of hydration on voice. The litera-ture focus on gargling and oral rinsing is limited. Since hydration effect due to gargling and oral rinsing is debated, its effect on voice as a warm-up exercise needs investigation. Therefore the current study is in the direction of further investigating the scientific basis of effects of gargling and oral rinsing as warm up exercises on vocal effort in singers. Aim and objective: The aim of this study is to investigate the variations in acoustical charac-teristics of voice due to gargling and oral rinsing as a warm up exercise and to know the best effective method. Method: Study used the technique of oral rinsing and gargling exercise by making use of normal water in two groups of singers with the age range of 18-25 years. Acoustic analysis was done before and after the warm up exercises. Result: The mean values of pre and post gargling showed a decrement in jitter, shimmer, SPPQ where as increment in SAPQ and NHR values. Whereas mean value of jitter shimmer SAPQ showed decrement, slight increase in the mean values of SPPQ and no changes in NHR were found after rinsing activity. Conclusion: Thus it was concluded that oral rinsing is found to be a better warm up technique for voice rehabilitation compared to gargling among professional voice users especially for singers.
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