Can the transitions to and from running and the metabolic cost of running be determined from the kinetic energy of running?

Author(s): Holt, K. G., LaFiandra, M. E., Fonseca, S. T.

Journal/Book: J Motor Behav. 1999; 31: 1319 Eighteenth St NW, Washington, DC 20036-1802, USA. Heldref Publications. 265-278.

Abstract: An experiment was conducted in which volume of used oxygen per stride time and the total segmental changes in kinetic energy generated per stride time, Delta E-k s(-1), of 11 participants were determined on Day 1 for 7 treadmill running speeds. Gait transition speeds were determined on Day 2. Running metabolism and transition speed were predicted from the Day 1 mechanics of running expressed in Speed x Delta E-k s(-1) coordinates. Predictions followed from the relation between 2 generalized quality ratios Q(metab), and Q(mech), with numerator Delta E-k s(-1). In Q(metab), the denominator tor was the volume of used oxygen per stride time; in Q(mech), the denominator was the absolute regression constant from the linear dependency of Delta E-k s(-1) on speed.

Note: Article Turvey MT, Univ Connecticut, Dept Psychol, Ctr Ecol Study Percept & Act, 406 Babbidge Rd, Storrs,CT 06269 USA

Keyword(s): lcomotion; metabolism; motor control; HUMAN LOCOMOTION; MECHANICAL WORK; RHYTHMIC MOVEMENTS; GAIT; WALKING; SPEED; TRANSFERS; FREQUENCY; POWER; BODY

Zurück | Weiter