Learning Objectives:

1. Compare the cardiorespiratory responses (VO₂, heart rate, and energy expenditure) between running on a land treadmill and anti-gravity treadmill at different body weight support levels in trained runners. 2. Analyze the relationship between partial body weight support percentages (70% vs 90%) and time to volitional fatigue during high-intensity running exercise. 3. Apply findings regarding reduced metabolic demand during anti-gravity treadmill exercise to optimize training intensity and duration recommendations for athletes requiring partial weight-bearing rehabilitation.

Keywords: Key words: anti-gravity treadmill; partial weight bearing exercise