AIM: To investigate the effects of pulsed ultrasound (US) in recovery from Delayed Onset Muscle Soreness (DOMS). METHODS: Twelve healthy male athletes (mean age 23.83 +/- 1.697 year) performed an eccentric exercise protocol of non-dominant elbow flexors to induce muscle soreness on 2 occasions separated by 3 weeks. Subjects in experimental group received pulsed US (1 MHz, intensity 0.8 W/cm2, mark space ratio 1:10), whereas control group received sham US after 24 h, 48 h and 72 h. Perception of muscle soreness, active ROM and muscle strength were the parameters measured at 0 h, 24 h, 48 h and 72 h with the help of VAS, manual goniometer and JONEX muscles master instrument respectively. RESULTS: Post hoc t test analysis revealed significant differences (p < 0.05) between 0 h and 72 h in the parameter of ROM (t = 6.18) and muscle power (t = 2.54) as well as between 24 h and 48 h in the parameter of muscle soreness (t = 3.13) in control group. Similar differences were also observed in the experimental group. No significant inter-group differences at a level of 0.05 was observed in any parameter at any level. CONCLUSION: The pattern of recovery from DOMS was not influenced by the application of pulsed Ultrasound at the parameters discussed here.

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