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The purpose of this study was to examine the effect of a pre activation exercise of the hamstring muscles on muscle activation during the Nordic curl. 8 male participants performed a set of Nordic Curls following a single leg Romanian deadlift using a theraband. Peak EMG data was analysed for each of the three hamstring muscles. Results show that there was a significant difference (p=0.012) in peak EMG muscle activity of the semitendinosus following activation compared to a control trial. There were no changes in peak EMG muscle activity of biceps femoris and semimembranosus. Use of a pre activation technique such as a theraband single leg Romanian deadlift can increase the peak activity in the Nordic curl and so should be performed first as a preventative measure in hamstring injuries.