Sprint Interval Training Increases Power, Aerobic and Anaerobic Performance
New research in The Journal of Strength and Conditioning Research, examined short sprints intervals on athletic performance and hormonal levels. Researchers studied the effects of 4 weeks of sprint interval training on aerobic and anaerobic performance in preseason Iranian wrestlers.
Fifteen wrestlers were assessed for the study. All athletes followed a preseason training program that included drills, technique training, wrestling, and weight training. In addition to the preseason training program, the experimental group also performed a running based sprint interval protocol. Athletes ran 6 sprints at 100% effort, with a 10 second rest between each sprint. The athletes performed the sprint protocol for 2 sessions per week, for the duration of the study. Researchers tested the athletes before and after the intervention, examining VO2 max, blood tests, peak oxygen pulse, exhaustion tests, and tests to determine peak and mean power output.
Results indicated that the experimental group did display significant improvements in VO2 max, peak oxygen pulse, and improved in both aerobic and anaerobic performance. These athletes also displayed significant increases in their peak power output scores and mean power output scores after the sprinting protocol. Blood tests indicated that after the sprint training, testosterone levels significantly increased, while the measures of cortisol significantly decreased.