In resistance training exercise some conjecture exists regarding best practice for monitoring training loads. One simple and practical method previously utilised is rating of perceived exertion (RPE). This thesis Investigated the perceptual, physiological and performance responses to differing resistance exercise workouts. Key programming variables such as Intensity (% of 1 repetition maximum), volume load (absolute and per minute) and training to volitional failure versus a known end-point are factors likely to impact on RPE. Further, countermovement jump performance and hormonal responses may be linked to changes in RPE following power, strength and hypertrophy workouts.