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Summary Study aim : To evaluate the effect of power and muscle strength training on skin temperature and the performance of the vertical jump with countermovement (CMJ). Material and methods : The sample consisted of four male basketball athletes of the under-17 category (age: 15.75 ± 1.0 years). 48 hours after anthropometric evaluation and determination of the loads for 1 repetition maximum (1RM) in the leg extension exercise, the athletes were subjected, through crossover-type entrance, to power (PTP) and strength (STP) training protocols. The protocols consisted of three sets with loads of 60% and 90% of 1RM for PTP and STP, respectively. Thermographic images of the thighs were taken before and immediately after each training session. Results : There were significant differences in results between the two training protocols, with increased total repetitions (t = 13.481; p &lt; 0.05) and total training volume (t = 15.944; p &lt; 0.05) in the PTP, and increase in the % of 1RM (t = 33.903; p &lt; 0.05) and rating of perceived exertion (t = 6.755; p &lt; 0.05) in the STP. The skin temperature before and after PTP and STP showed no significant differences. In the post-STP, the CMJ presented significant reductions in height (t = 3.318; p &lt; 0.05), flight time (t = 3.620; p &lt; 0.05), velocity (t = 3.502; p &lt; 0.05), and force (t = 4.381; p &lt; 0.05). There were no significant differences in pre-and post-STP CMJ. Conclusions : Power and maximum strength training in the leg extension exercise performed until concentric failure appears to be a method that induces thermal stress on the skin. This training directly influenced the performance of the vertical jump after the stimulus.

biomedical human kinetics

Influence of power and maximal strength training on thermal reaction and vertical jump performance in Brazilian basketball players: a preliminary study