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Category

Sports Performance & Elite Sports

Document Type

Paper

Abstract

This study investigated within-session variability in treadmill running mechanics during repeated same-day runs across multiple speeds, with a secondary aim to assess how these mechanics changed with speed. Eleven team sport athletes (9 M, 2 F; 25.0 ± 3.2 years) completed three trials of 30-s treadmill runs at 10, 12, 14, 16, 18 and 20 km/h. The coefficient of variation (CV%) for step length (2.7 to 1.7%, β = -0.10, p = 0.004) and flight time (7.9 to 4.3%, β = -0.41, p < 0.001) decreased with speed, indicating greater consistency. Step length (β = 0.068), step rate (β = 0.054), flight time (β = 3.69) and horizontal work (β = 0.026) increased with speed, and contact time (β = –9.86), duty factor (β = –0.008) and vertical work (β = –0.041) decreased. These findings suggest movement patterns become more consistent at higher speeds.

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