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- Enhancing Mechanical Outcomes in Resistance Training: The Impact of Different Warm-Up and Re-Warm-Up StrategiesPublication . Neves, Pedro Miguel Pombo; Alves, Ana Sofia Ruivo; Marques, Diogo Luís Sequeira TorgalWarm-up in resistance training is essential to improve performance of practitioners. However, gaps remain in selecting the optimal warm-up protocol for resistance training. Alongside warm-up, re-warm-up is also an underexplored topic in this context. The present thesis seeks deepening understanding of how different warm-up and re-warmup strategies influence mechanical performance during resistance training. To achieve these objectives, five studies were conducted: i) a review about warm-up and re-warmup during resistance training; ii) interpretation and discussion of usual practices among strength coaches and practitioners in Portugal; iii) a comparison of two warm-up strategies (specific warm-up vs. general plus specific warm-up); iv) the effect of re-warmup on bench press and squat performance during resistance training; v) individual variability on response to the re-warm-up. The results showed that i) no prior studies have addressed re-warm-up’s effect on dynamic strength performance in resistancetrained individuals; ii) adherence to general and specific warm-up protocols was high (> 93 %), yet intra-session re-warm-up was seldom used (< 20 %); iii) no mechanical or psychophysiological differences emerged when combined general and specific warm-up or even specific warm-up were used during resistance training; iv) re-warm-up significantly enhanced mean propulsive velocity and power in the squat exercise, but not in the bench press exercise,; v) stronger, taller, and heavier athletes were reported to be more likely to respond positively to the re-warm-up protocol. Across these five developed studies, it was suggested that both specific warm-up and combined general and specific warm-up protocols can properly prepare athletes, once the selection of warm-up should consider the available time to perform the resistance training and the individuals’ purposes. The re-warm-up during resistance training, although little used, shows promise and appears to benefit stronger, taller, and with higher body mass individuals, further reinforcing the importance of personalized protocols.