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

C. B. Cooke; M. J N McDonagh; A. M. Nevill; C. T M Davies

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

C. B. Cooke, M. J N McDonagh, A. M. Nevill, C. T M Davies

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1237-1244
Number of pages	8
Journal	Journal of Applied Physiology
Volume	71
Issue number	4
Publication status	Published - 1 Oct 1991

Keywords

apparent efficiency
kinematics
running economy

Cite this

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title = "Effects of load on oxygen intake in trained boys and men during treadmill running",

abstract = "This investigation examines the effects of vertical and horizontal loading on the O2 intake ({\.V}O2) response of children (n = 8) and adults (n = 8) to treadmill running. In unloaded running, the children required a significantly greater {\.V}O2 (P < 0.001) than the adults [mean difference 7 ml · kg-1 · min-1 (18.5%)]. There was no significant difference in the {\.V}O2 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 {\.V}O2 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.",

keywords = "apparent efficiency, kinematics, running economy",

author = "Cooke, {C. B.} and McDonagh, {M. J N} and Nevill, {A. M.} and Davies, {C. T M}",

year = "1991",

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TY - JOUR

T1 - Effects of load on oxygen intake in trained boys and men during treadmill running

AU - Cooke, C. B.

AU - McDonagh, M. J N

AU - Nevill, A. M.

AU - Davies, C. T M

PY - 1991/10/1

Y1 - 1991/10/1

N2 - 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.

AB - 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.

KW - apparent efficiency

KW - kinematics

KW - running economy

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SN - 0161-7567

VL - 71

SP - 1237

EP - 1244

JO - Journal of Applied Physiology

JF - Journal of Applied Physiology

IS - 4

ER -

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

Abstract

Keywords

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