The Effect of Two Types of Resistance Training on Salivary BDNF in Preadolescence Children

  According to high potential of neural plasticity in childhood, it is important to find the best training methods to reach proper neural adaptation. BDNF is a member of the neurotrophins which is engaged in neuromuscular adaptations due to increased muscular activity. The main purpose of this study was to investigate the effects of two types of suspension and unsuspended resistance training on salivary BDNF in prepubescent
children. 24 immature boys (mean age 12.3±0.55 yrs, Tanner stage of 1 and 2) were divided into three groups of TRX suspension training (TRX), body weight training (BWT), and control (C). Training groups completed training programs, twice per week for eight weeks. unstimulated Saliva samples were collected before training and also 72 hours after last training session to measure salivary BDNF using ELIZA method.
One-way ANOVA test with significance level of 0.05 was used for comparison between groups. Even though the effects of resistance training on muscle strength in the lower body was observed in the experimental groups, BDNF concentrations were not significantly different (F=.922, P=.411). Significant
changes in body fat percentage and strength well show the effectiveness of TRX compared to body weight training and control group. However, no significant difference between the groups in BDNF, can be due to regular participation in soccer training. It seams children affected by his growth and maturation processes are more susceptible to exercise-induced changes in neurotrophins and probably, their regular activity has provided the sufficient Stimulation to produce this protein