This study is examining the impact of high vs low load resistance training (85 vs 30% of 1 RM) and its effects on muscle activation, muscle thickness, body composition, strength, and hormonal markers including cortisol and testosterone. The experimental design involves recreationally trained lifters, as currently training 2 4 days per week for at least the previous 6 months. Investigation will include muscle thickness and body composition as measured using ultrasound and bioelectrical impedance analysis. S trength testing will include the use of an isokinetic dynamometer for lower and upper body extension/flexion movements, as well as isometric strength for maximum voluntary contraction.