Resistance exercise and plasma beta-endorphin/beta-lipotrophin immunoreactivity

Serum cortisol and plasma beta-endorphin/beta-lipotrophic hormone (LPH) immunoreactivity were measured in five males before and after endurance exercise (treadmill) and burst activity resistance exercise (weight lifting). Mean beta-endorphin/beta-LPH immunoactivity increased significantly following treadmill testing (p < .05) and weight training (p < .06). Post-exercise hormonal values were similar for the two activities. The hormonal changes previously reported with endurance activities also occur with burst activity exercise.