The energetics of locomotion depend largely on speed, gait and body size. Gait selection for a given speed appears partly, but perhaps not wholly, related to metabolic cost. One cost normally omitted from considerations of locomotion efficiency is the metabolic cost of the transition between gaits. We present the first direct assessment of the metabolic cost for the walk-run/run-walk transition in humans. The average increase in metabolic cost for a step involving a transition is 1.75 times that of a mean non-transition step at a speed where metabolic power requirements are identical for walking and running. Despite this substantial increase in cost for the transition step, the metabolic cost of gait transition is unlikely to have a strong bearing on the process of gait selection as the cost of using a metabolically inappropriate gait, even for only a few steps, will dominate.
Energy Gait Run Transition Walk
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Alexander RMcN (2002) Energetics and optimization of human walking and running: the 2000 Raymond Pearl memorial lecture. Am J Hum Biol 2002:641–648Google Scholar
Beuter A, Lalonde F (1989) Analysis of a phase transition in human locomotion using singularity theory. Neurosci Res Commun 3:127–132Google Scholar
Cavagna GA, Heglund NC, Taylor CR (1977) Mechanical work in terrestrial locomotion: two basic mechanisms for minimizing energy expenditure. Am J Physiol 233:R243–261PubMedGoogle Scholar
Heglund NC, Taylor CR, McMahon TA (1974) Scaling stride frequency and gait to animal size: mice to horses. Science 186:1112–1113PubMedGoogle Scholar
Hreljac A (1993) Preferred and energetically optimal gait transition speeds in human locomotion. Med Sci Sports Exerc 25:1158–1162PubMedGoogle Scholar
Minetti AE, Boldrini L, Brusamolin L, Zamparo P, McKee T (2003) A feedback-controlled treadmill (treadmill-on-demand) and the spontaneous speed of walking and running in humans. J Appl Physiol 95:838–843PubMedGoogle Scholar
Prilutsky BI, Gregor RJ (2001). Swing- and support-related muscle actions differentially trigger human walk-run and run-walk transitions. J Exp Biol 204:2277–2287PubMedGoogle Scholar
Taylor CR, Heglund NC, Maloiy GM (1982) Energetics and mechanics of terrestrial locomotion. I. Metabolic energy consumption as a function of speed and body size in birds and mammals. J Exp Biol 97:1–21PubMedGoogle Scholar
Thorestensson A, Roberthson H (1987) Adaptations to changing speed in human locomotion: speed transitions between walking and running. Acta Physiol Scand 131:211–214PubMedGoogle Scholar
Tseh W, Bennett J, Caputo JL, Morgan DW (2002). Comparison between preferred and energetically optimal transition speeds in adolescents. Eur J Appl Physiol 88:117–121CrossRefPubMedGoogle Scholar