Background: Physical training adapts the body to best accomplish a particular task. In the case of triathlon, training aims to improve the athlete's performance for the competition.
One way to improve this performance is the strength exercises. The aim of this study was to investigate the influence of a specific weight training program in the organics and neuromotor variables of
Methods: 14 male athletes of national level competition were recruited. The training was divided in 24 muscular activity sessions during 12 weeks. The adaptation phase consisted of 08
sessions, using a load of 60% to 65% of a maximum repetition (1 MR). The specific phase had duration of 16 sessions using a load of 65% to 80% of a 1 MR. The subjects were divided in two groups:
experimental group (G 1), and control group (G 2), where the first group trained with weights and the other did not. Tests and data collection were made in three distinct moments: the first, before
starting the weight training; the second, after four weeks (after session 8) and the third one, after twelve weeks (after session 24). The Mann Whitney test for small samples was used to statistics
analyze the following variables: time of swim in 400 meters of crawl (TS 400m), maximum oxygen uptake (VO2max), maximum power (PP w.kg-1), medium power (PM W.kg-1) and fatigue index (% FI). The
significance level was set at p<0.05
Results: In comparison between values obtained in 400m of swimming for experimental and the control group, the results showed significant differences between groups for all moments T1
(p=0.019) , T2 (p=0.036) , and T3 (p=0.013), respectively. Regarding the VO2max, the experimental group presented a range among the three moments, while the control group showed constant values. As
for the maximum and medium power, the results obtained in the last assessment (T3) confirmed statistically significant differences, being for PPW.kg -1 (p=0.048) and PMW.kg -1 (p=0.041) for the
experimental group. For the fatigue index (%FI) in average, there was a slight improvement in the experimental group throughout the study
Conclusions: The main results indicated that the weight training proposed for triathlete’s provided a significant improvement in the time of swimming, in the maximum and medium power.