Biomechanical factors affecting running economy.

  • Belli A
  • Komi P
  • Kyro H
 et al. 
  • 1

    Readers

    Mendeley users who have this article in their library.
  • N/A

    Citations

    Citations of this article.

Abstract

PURPOSE: The present study was designed to investigate kinematics, kinetics, and muscle activity for explaining running economy at different running speeds. METHODS: A total of 17 young endurance runners ran at 12-13 different running speeds. Respiratory gases were collected. Kinematic records were obtained by a high-speed video camera, and 3-D ground reaction forces (GRF) were measured simultaneously with telemetric EMG recordings of the selected leg muscles. In the analysis, joint moments and power were calculated by inverse dynamic methods. RESULTS: The oxygen consumption and energy expenditure increased quite linearly with increasing running speed. However, already at the slowest speed, interindividual differences in running economy were noticed, and they increased with increasing running speed. Simultaneously, the instantaneous joint moment-angular velocity curves of the ankle and knee joints shifted to the right and upward, thus increasing joint power in the push-off phase of contact. Most definitive was the increase in EMG-activity of the BF muscle and its correlation with energy expenditure (r = 0.48, P

Author-supplied keywords

  • EMG
  • ENERGY
  • GROUND REACTION FORCE
  • Løbestil
  • Løbeøkonomi
  • MOMENT
  • POWER

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • Alain Belli

  • Paavo V. Komi

  • Heikki Kyro

  • Heikki Kyröläinen

  • Alain Belli

  • Paavo V. Komi

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free