Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 0 1-2 1967 06 15 7 10 B. Djahanguiri M. A. Khoyi 2015 09 28 The effect of different frequencies of noise (150;300 and 600 c/second) on the time of fatigue has been studied on rats. The method of swimming has been used for this study . the results show a significant decrease in the average time of fatigue of the rats subjected to the noise compared with the control group. The possible mechanisms are discussed. https://acta.tums.ac.ir/index.php/acta/article/view/4079 https://acta.tums.ac.ir/index.php/acta/article/download/4079/4054