Effects of load on oxygen intake in trained boys and men during treadmill running

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)1237-1244
Number of pages8
JournalJournal of Applied Physiology
Volume71
Issue number4
Publication statusPublished - 1 Oct 1991

This investigation examines the effects of vertical and horizontal loading on the O2 intake (V̇O2) response of children (n = 8) and adults (n = 8) to treadmill running. In unloaded running, the children required a significantly greater V̇O2 (P < 0.001) than the adults [mean difference 7 ml · kg-1 · min-1 (18.5%)]. There was no significant difference in the V̇O2 response of the children and the adults to either vertical or horizontal loading. Vertical loading with 5 and 10% of body mass did not produce a significant increase in the V̇O2 response of either group. In contrast, horizontal loading produced a significant increase (P < 0.001) in both groups. The consistent response to the two forms of loading suggests that there is no difference between children and adults in the apparent efficiency of running with an external load. Stride frequency showed a significant increase with vertical loading (P < 0.001) and a significant decrease with horizontal loading (P < 0.001) in both groups.

    Research areas

  • apparent efficiency, kinematics, running economy

Related faculties, schools or groups

External organisations

  • University of Birmingham

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