Effect of cycling shoe cleat position on biomechanical and physiological responses during cycling and subsequent running parts of a simulated Sprint triathlon: a pilot study - Université de Reims Champagne-Ardenne Accéder directement au contenu
Article Dans Une Revue Journal of Science and Cycling Année : 2020

Effect of cycling shoe cleat position on biomechanical and physiological responses during cycling and subsequent running parts of a simulated Sprint triathlon: a pilot study

Résumé

Proper cycling cleat adjustment could improve triathlon performance. Recommendations have included positioning the first metatarsal head above the pedal spindle or slightly forward, but mid-foot cleat positions could be more appropriate in triathlon at constant load due to their impact on the subsequent running performance. We evaluated the impact of antero-posterior cleat position on biomechanical and physiological variables during the cycling and running parts of a simulated Sprint triathlon. Seven participants performed two 32-min cycling tests including 8 sets of 3 min 30 s intervals performed at just below the power output at the first ventilatory threshold interspersed with 30 s sprints at > 100% of the maximal aerobic power. The cycling exercises were immediately followed by a maximal running performance of 20 min. The tests were performed with a 5-mm posterior (PCP) and a 5-mm anterior (ACP) first metatarsal cleat position. The PCP decreased the energy cost of running (-5.9%; p = 0.04; effect size [ES] = 0.37) despite no significant change in cycling power output (p = 0.17; ES = 0.40) and running speed (p = 0.89; ES = 0.04). In addition, the PCP resulted in a lower recruitment of soleus during sub-maximal cycling intensity (-7.0%; p = 0.04; ES = 0.88) and of gastrocnemius medialis during the running part of the test (-25%; p = 0.04; ES = 1.05). Therefore, the PCP could be more suitable in triathlon by being more economical for subsequent running, due to a lower recruitment of calf-muscles during the sub-maximal cycling and the running part.
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hal-03016041 , version 1 (20-11-2020)

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Geoffrey Millour, Loic Janson, Sebastien Duc, Frédéric Puel, William Bertucci. Effect of cycling shoe cleat position on biomechanical and physiological responses during cycling and subsequent running parts of a simulated Sprint triathlon: a pilot study. Journal of Science and Cycling, 2020, 9 (1), pp.57-70. ⟨10.28985/0620.jsc.02⟩. ⟨hal-03016041⟩

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