Freeman et al. (2023) showed sprinting alone added ~20% fascicle...
Fred Duncan@Fred__Duncan
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Sep 30, 2025
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Freeman et al. (2023) showed sprinting alone added ~20% fascicle length in the hamstrings…structural changes that support faster sprinting and lower strain risk.
This study examined sprint training and found that the biceps femoris long head (BFLH) increased fascicle length
This study examined sprint training and found that the biceps femoris long head (BFLH) increased fascicle length
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by about 20%, while the control group actually lost ~7%. Those increases were paired with a reduction in pennation angle, adaptations that support faster contraction and may lower strain risk.
Both acceleration and max velocity sprint training improved performance, but the
Both acceleration and max velocity sprint training improved performance, but the
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max velocity sprinting group actually improved acceleration and top speed the most.
If you want to know how to actually prepare the hamstrings for sprinting and how to program both acceleration and max velocity work together, that’s exactly what I show you step by step
If you want to know how to actually prepare the hamstrings for sprinting and how to program both acceleration and max velocity work together, that’s exactly what I show you step by step
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