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Related Concept Videos

Distance Problem01:29

Distance Problem

When an object's velocity changes over time, the total distance traveled can be determined by summing small displacement intervals over short increments. This approach approximates the true distance through numerical summation and the use of integral calculus. An estimate of the total displacement can be obtained by measuring velocity at regular intervals and multiplying each value by the corresponding time step.If a runner accelerates over the first three seconds of a race, speed measurements...
Average Velocity01:12

Average Velocity

To calculate the other physical quantities in kinematics, we must introduce the time variable. The time variable allows us not only to state the position of the object during its motion, but also how fast it is moving. The speed at which an object is moving is given by the rate at which the position changes with time. For each position xi, we assign a particular time ti. If the details of the motion at each instant are not important, the rate is usually expressed as the average velocity. This...
Velocity and Position by Graphical Method01:34

Velocity and Position by Graphical Method

Velocity and position can be calculated from the known function of acceleration as a function of time. The total area under the acceleration-time graph and the velocity-time graph gives the change in velocity and position, respectively. In the case of an airplane, its acceleration is tracked using the inertial navigation system. The pilot provides the input of the airplane's initial position and velocity before takeoff. The inertial navigation system then uses the acceleration data to calculate...
Velocity Potential01:20

Velocity Potential

In steady, incompressible flow through a long, straight pipe with a uniform cross-section, the flow in the central region (far from the pipe walls) is irrotational. This irrotational nature means that fluid particles do not rotate around their axes, and a scalar function called the velocity potential, represented by ϕ, can be used to describe their movement. In irrotational flows, the velocity field V is defined as the gradient of the velocity potential:
Velocity and Acceleration of a Wave00:51

Velocity and Acceleration of a Wave

A wave propagates through a medium with a constant speed, known as a wave velocity. It is different from the speed of the particles of the medium, which is not constant. In addition, the velocity of the medium is perpendicular to the velocity of the wave. The variable speed of the particles of the medium implies that there must be acceleration associated with it. 
The velocity of the particles can be obtained by taking the partial derivative of the position equation with respect to time. We can...
Average Acceleration01:30

Average Acceleration

The importance of understanding acceleration spans our day-to-day experiences, as well as the vast reaches of outer space and the tiny world of subatomic physics. In everyday conversation, to accelerate means to speed up. For instance, we are familiar with the acceleration of our car; the harder we apply our foot to the gas pedal, the faster we accelerate. The greater the acceleration, the greater the change in velocity over a given time. Acceleration is widely seen in experimental physics. In...

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Related Experiment Video

Updated: Jun 25, 2026

Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running
08:26

Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running

Published on: July 17, 2020

Treadmill Velocity Best Predicts 5000-m Run Performance.

E Stratton1, B J O'Brien, J Harvey

  • 1School of Human Movement & Sport Sciences, University of Ballarat, Ballarat, Australia.

International Journal of Sports Medicine
|February 10, 2009
PubMed
Summary

Final treadmill velocity during a VO2max test is the best predictor of 5000-m run performance. This key physiological marker remained the strongest indicator of running speed both before and after endurance training.

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Area of Science:

  • Exercise Physiology
  • Sports Science
  • Human Performance

Background:

  • Endurance performance is influenced by various physiological factors.
  • Identifying the most predictive markers is crucial for training optimization.
  • Previous research has explored maximal oxygen uptake and lactate threshold, but their relative importance for 5000-m performance requires further clarification.

Purpose of the Study:

  • To identify the key physiological determinants that best predict 5000-m average run velocity.
  • To compare the predictive power of these determinants before and after a six-week endurance training program.
  • To assess the impact of training on maximal oxygen uptake, lactate threshold, and running economy in relation to performance.

Main Methods:

  • Thirty-nine untrained participants underwent physiological testing (maximal oxygen uptake, lactate threshold, running economy, final treadmill velocity) and a 5000-m run.
  • Tests were repeated after a six-week endurance training intervention.
  • Correlation and stepwise regression analyses were used to determine the relationship between physiological variables and 5000-m performance.

Main Results:

  • Maximal oxygen uptake, final treadmill velocity, and lactate threshold velocity/oxygen uptake all significantly improved post-training.
  • Final treadmill velocity demonstrated the strongest correlation with 5000-m performance in both untrained (r=0.89) and trained (r=0.83) states.
  • Running economy did not significantly correlate with performance, and lactate threshold velocity was the only variable to significantly improve the predictive accuracy of final treadmill velocity.

Conclusions:

  • Final treadmill velocity achieved during a VO2max test is the single most important physiological predictor of 5000-m running performance.
  • While training enhances key physiological markers, final treadmill velocity remains the primary determinant of performance.
  • Lactate threshold velocity offers additional predictive value when combined with final treadmill velocity, highlighting its importance in trained individuals.