Combining HIIT Plus Cognitive Task Increased Mental Fatigue but Not Physical Workload in Tennis Players

Mental fatigue can significantly impair physical performance during sports practice. However, previous studies have not analyzed the impact of combining High-Intensity Interval Training (HIIT) with a cognitive task on performance. In this line, we developed present research to investigate specific aspects mental and as well potential HIIT task. Therefore, objective study was compare indicators between single an incongruent Stroop added protocol. A cross-sectional conducted 32 tennis players (25 men 7 women, mean age = 21.40). Two sessions were performed: (1) one presented rests, (2) another without rests. fatigue, load, wellness measured. Additionally, maximum heart rate, peak speed, rate variability through RMSSD recorded using monitor. Mann-Whitney U tests Wilcoxon performed explore differences during-session loads pre- post-HIITs. The results showed that mixed caused higher increases in (p 0.04) ratio perceived exertion 0.001) from post-HIIT. no significant external (speed) internal (heart rate) factors observed protocols. This suggests subjective feelings increased due fatigue. it did decrease workload for players. incorporating short periods could be used develop tolerance workload.