Impact of Aerobic Exercise on Pain Modulation in Healthy Adults

"HIIT Protocol (Individualization of Exercise Program): Peak power will be calculated with Graded Exercise Test (GXT), with 90% of peak power used as the target range for the intervention.~Total Training Time: 35 minutes.~Warm-Up Phase:~1. Duration: 10 minutes~2. Intensity: 40-50% of peak power~HIIT Work and Rest Cycles:~Each session includes 20 minutes of intervals with the following pattern:~Work: 1 minute at 90% of peak power Rest: 3 minutes at 40% of peak power Repeat for five cycles. 5 minute cool down at 40% of peak power~Monitoring:~VO₂ and heart rate will be continuously measured.~Lactate levels will be measured at the following points:~1. Before the warm-up~2. After completing the warm-up (1st-minute intervention)~3. During the second minute of each rest period"