## 4 Discussion  
This research aimed to determine changes in skin temperature during the pre-soccer-game routine and to inspect the efficiency of regular tracksuits on Ts and running-speed preservation. The main findings indicate that tracksuits influence Ts, thus preventing players from significantly losing running speed. We found no significant interaction effect between treatment and time point in Ts. However, a significant main effect of the time point indicated that skin temperature changed over time, regardless of the applied treatment. Pairwise comparisons of simple main effects showed that skin temperature significantly dropped following the warm-up protocol and significantly rose following the 12 min of passive rest for both experimental and control treatments (see Figure 2). Interestingly, the skin temperature remained significantly lower after 12 min of passive rest compared to baseline values following the experimental but not control treatment, indicating that the experimental treatment may have affected thermoregulation, which could have contributed to the maintenance of sprint performance over time. A possible explanation for the observed skin-temperature drop is the concept of blood-flow redistribution. During exercise, blood flow is directed toward the working muscles, whereas blood flow to other tissues, including the skin, may be reduced. This redistribution of blood flow may be a mechanism to improve muscle oxygenation and nutrient delivery. Following exercise, blood flow may remain directed to the muscles, which temporarily reduces skin temperature as blood is retracted from the skin. [PERSON] et al. [9] proved that Ts, like Tm, may be a good indicator of athletes' preparedness for maximum effort, but, in contrast to rising Tm, Ts decreases due to vasodilation [32]. The results presented in this study showed no significant main effect for temperature (\(p=0.691\)). Although a 0.49 \({}^{\circ}\)C (-1.3%) drop in Ts is not statistically significant, any difference in sports can be beneficial. These results were confirmed by [PERSON] et al. [33], who recorded a drop in leg Ts of 1.1 degrees (3.6%). These findings proved that Ts decreased regardless of the WU protocol. In contrast are the findings of [PERSON] et al. [34], where the results of Ts were provided for the region of interest (ROI), which included the gastrocnemius and Achilles tendon. This mismatch can be explained by the fact that the skin is thinner in that region and the inside structures have more influence on the skin surface due to the lesser interference of subcutaneous fat [35]. At the end of the passive break, Ts was increased, and that change was more considerable following the control treatment compared to baseline values (effect sizes were 0.25 and 0.20 for the experimental and control treatments, respectively; see Figure 2). Ts tend to resume baseline values during the break but are less likely to be entirely restored if participants wear some heating garments [36]. [PERSON] et al. [37] also confirmed that participants wearing a blizzard blanket during the passive break showed a significantly lower increase in Ts than the control group during the first 8 min. The results after that point are unclear because Ts tended to restore evenly in both groups after that period regardless of whether they wore a jersey or used some form of heating garments. However, our research showed positive results (lesser increase in Ts) in participants wearing tracksuits, even after a 12 min passive break. Since none of the previous research had the crossover design, it is impossible to compare the results precisely. However, [PERSON] et al. [14] provided evidence that wearing tracksuits during the WU (\(36.9\pm 0.3\)\({}^{\circ}\)C) and the break period (\(37.0\pm 0.2\)\({}^{\circ}\)C) can diminish the Tm loss and presumably prevent a substantial Ts increase compared to a control group (36.6 \(\pm\) 0.3 \({}^{\circ}\)C).