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Use double quotes to find documents that include the exact phrase: "aerodynamic AND testing"
The Sport Information Resource Centre
Two cross country skiers

High volumes of interval training can lead to increased injury risk and athlete burnout. An optimized interval training program is necessary for helping athletes safely reach their goals. Improvements in endurance performance can be seen in as few as 2 weeks of sprint interval training (SIT) or 4 weeks of high-intensity interval training (HIIT).