100417 Acute Hormonal Responses to Varying Protocols in Men and Women
A recent study by William J. Kraemer and associates showed the hormonal response benefits of three separate types of maximum heavy resistance training protocols. This group examined the response effects from the bench press, sit up and bilateral leg extensions exercises based upon percentages of the maximal ten repetition, five set scheme with a two minute rest between each set.
The three exercise program variances were:
Heavy maximal 10 repetition maximal (10 RM) loads of five sets of ten repetitions with a two minute rest in between the sets.
Submaximal heavy resistance 70% of the 10 RM.
Maximal Explosive resistance of 40% 10 RM
The results were pretty clear after the study was finished as to which protocol released the greatest amount of growth hormones. There was a significant increase in the serum growth hormone after the heavy maximal ten rep/five sets were completed. And, this was true in both men and women, but more so for the men than the women. Serum testosterone significantly increased in the men, but not the women and only while engaging in the heavy maximal sessions.
Since these two substances are critical to long-term adaptations of strength and power this study may help in the long-term process of inducing greater muscle hypertrophy and maximal strength development.
Adapting the heavy loading hypertrophic type of exercise sessions appears to foster growth in the muscle mass for men if they use the heavy maximal load for ten reps and five sets with the suggested two-minute rest in between sets. These hormonal responses seem to be related to the amount of muscle mass activated in the exercises. Using the submaximal and the explosive maximal loads did not elicit increases in the release of these hormones, as it was not strenuous enough to the organism.
Neural control and the achievement of higher rates of force development are fostered, at least in the men, with the explosive maximal loads. Whereas in the women the responses after exercising with explosive maximal weights did not seem to be that clear cut. For women it would seem best to train with the explosive maximal and the heavier maximal loads.