Context: How optimal is 90 strides per minute and why? Endurance runners are often advised to maintain short strides and avoid landing with the feet too far in front of their hips or knees ('overstriding'). 14 runners studied.


Results:

As stride rate increases:

  • maximum hip flexor forward and backward moments increased, and

  • the position of the foot at landing relative to the hip decreased.


Increases in foot landing position relative to the hip, but not the knee, were associated with:

  • higher rearward braking forces


Increases in foot landing position relative to the knee were associated with:

  • higher vertical ground impact force impact


Conclusions: The results suggest that runners may benefit from a stride frequency of about 85 strides per min and by landing at the end of swing phase with a relatively vertical tibia.


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Source: https://:.ncbi.nlm.nih.gov/26538175/


J Exp Biol 2015 Nov;218(Pt 21):3406-14. doi: 10.1242/jeb.125500.

Effects of stride frequency and foot position at landing on braking force, hip torque, impact peak force and the metabolic cost of running in humans

Daniel E Lieberman 1, Anna G Warrener 2, Justin Wang 2, Eric R Castillo 2

Affiliations expand



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