The effect of 12 strength-power training weeks with different loads on Neuromuscular adaptations incollegesoccer players

There is disagreement about transmitting the effects and the kind of strength- power training for making optimal neuromuscular adaptations in soccer players. The aim of the present study was the effect of 12 strength-power training weeks with different loads on neuromuscular adaptations in college soccer players. In this Quasi-experimental study, 36 subjects from 4 universities were divided into 3 equal groups based on a random sampling. Strength-power training program were carried out for 12 weeks (3 sessions per week) for all groups. In stages of pre test and post test were taken electromayographic amplitude and mean power frequency of vastus lateralis and medialis muscles, lower body muscular strength, anaerobic power, explosivepeak and average power. Data were analyzed using analysis of covariance and LSD Post hoc of and paired t- test in significant level of p<0.05. The load of 80-90 % of 1RM caused a significant increases in vastus lateralis mean power frequency compared to the loads of 60-70 % and 70-80 % of 1RM (p=0.01 and p=0.02 respectively). Also the load of 80-90 % of 1RM caused a significant increases in vastus lateralis (p=0.01) and medialis (p=0.006), electromayographic amplitude and lower body muscular strength (p=0.01) compared to the load of 60-70 % of 1RM .
The loads of 80-90 and 70-80% of 1RM caused a significant increases in lower body anaerobic power (p=0.0001 and
p=0.02 respectively) compared to the load of 60-70 % of 1RM. It's advisable to use the load of 80-90 % of 1RM with high speed and low repetition in planning the strength- power training form taking optimum neuromuscular adaptations