Systematic reduction of leg muscle activity throughout a standard assessment of running footwear

Mohr, Maurice; Tscharner, Vinzenz von; Nigg, Sandro; Nigg, Benno M.

doi:10.1016/j.jshs.2021.01.003

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…All the variables were analysed from a baseline set to 9 min of running (about 1.7 km based on the imposed speed of 3.11 m/s on average). This baseline was set to only measure an eventual effect of the LBS in the duration of prolonged running, while avoiding measuring the adaptation effects due to reaching a steady-state normalV . O 2 , 37 stable biomechanical pattern, 38,39 stable neuromuscular system, 40 or stable mechanical shoe properties. 41 Likely stabilised following this adaptation period, all the measured variables were unaffected by the shoe LBS.…”

Section: Discussionmentioning

confidence: 99%

Increasing the longitudinal bending stiffness of runners’ habitual shoes: An appropriate choice for improving running performance?

Flores

Rao

Berton

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part P:

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This study analysed the effects of increasing the longitudinal bending stiffness (LBS) of runners’ habitual shoes on the metabolic energetic demand, lower limb muscle activation and stride spatiotemporal parameters during a prolonged running session through classical group investigation, as well as a more individualised approach. Eleven recreational male participants ran overground for 40 min at 95% of their ventilatory anaerobic threshold with their own shoes or their shoes with higher LBS (stiff carbon plate inserted under insole). The net energetic cost of running, lower leg muscle activation and spatiotemporal parameters were measured during the prolonged running. The variables of interest were analysed for 1 min in seven time intervals. There were no main effects of LBS or interaction effects with running duration on the group averaged variables. Overall, the participant-specific metabolic effects induced by an increased shoe LBS were not beneficial. Beneficial metabolic effects were more likely to occur when the increased LBS induced a decrease or no change in the ground contact time relative to their habitual shoes, as well as for taller runners. Increasing the LBS in runners’ habitual shoes did not induce systematic metabolic effects for all the runners and may not be beneficial for performance purposes if the runners’ shoe habits were too disrupted.

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