Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2008) 07, 91 - 95

Research article
Influence of Gait Manipulation on Running Economy in Female Distance Runners
Wayland Tseh1, , Jennifer L. Caputo2, Don W. Morgan2
Author Information
1 University of North Carolina Wilmington, USA
2 Middle Tennessee State University, Murfreesboro, USA

Wayland Tseh
✉ Department of Health and Applied Human Sciences, University of North Carolina Wilmington, Wilmington, NC, 28403, USA
Email: tsehw@uncw.edu
Publish Date
Received: 14-08-2007
Accepted: 28-11-2007
Published (online): 01-03-2008
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ABSTRACT

The aim of this investigation was to determine if gait manipulation influences running economy. Following 30 minutes of accommodation to level treadmill running at 3.35 m·s-1 and determination of VO2peak, nine female distance runners (age = 23.3 ± 4.2 years; body mass = 57.5 ± 5.2 kg; height = 1.64 ± 0.10 m; body fat = 11.4 ± 2.4 %; VO2peak = 54.9 ± 4.1 ml·kg-1·min-1) completed two treadmill running sessions. In each session, standing VO2 was measured and subjects ran for 6 minutes at 3.35 m·s-1 under 4 randomly-selected conditions: a) normal running (NL), b) hands behind back (BK), c) hands on head (HD), and d) running with exaggerated vertical oscillation (VOSC). During the last 2 minutes of each running bout, samples of expired air were analyzed to determine oxygen uptake (VO2). Data obtained by averaging gross VO2 values across sessions indicated that VOSC (51.0 ± 2.5 ml·kg-1·min-1) and HD (46.1 ± 2.0 ml·kg-1·min-1) resulted in significantly (p < 0.05) elevated VO2 values compared to BK (43.9 ± 2.4 ml·kg-1·min-1) and NL (43.4 2.6 ml·kg-1·min-1). VO2 measured during VOSC was also higher compared to HD. Viewed in concert, these results suggest that specific gait manipulations can produce marked decrements in running economy among trained female distance runners.

Key words: Biomechanics, oxygen uptake, distance running, female runners


           Key Points
  • This investigation demonstrates that specific biomechanical manipulations can produce substantive increases in the oxygen cost (VO) of submaximal running in female distance runners.
  • The magnitude of increases in VO reported in this study raises the intriguing possibility that meaningful improvements in running economy might be achieved by manipulating the gait of distance runners who exhibit specific aspects of running style that deviate markedly from the optimum.
 
 
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