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Short Session High Intensity Interval Training and Treadmill Assessment in Aged Mice
09:19

Short Session High Intensity Interval Training and Treadmill Assessment in Aged Mice

Published on: February 2, 2019

Uphill running at iso-efficiency speed.

J Padulo1, G Annino, L Smith

  • 1Faculty of Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy. sportcinetic@yahoo.it

International Journal of Sports Medicine
|May 8, 2012
PubMed
Summary
This summary is machine-generated.

Running on slopes significantly alters gait kinematics. Step length, flight time, and step frequency decrease, while contact time and heart rate increase, offering insights into optimal running speeds on inclines.

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Last Updated: May 22, 2026

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Area of Science:

  • Biomechanics
  • Exercise Physiology
  • Running Science

Background:

  • Understanding running biomechanics on varying inclines is crucial for performance optimization and injury prevention.
  • Previous research has explored incline running effects, but specific kinematic changes at iso-efficiency speed require further investigation.

Purpose of the Study:

  • To investigate the impact of different treadmill gradients (0%, 2%, 7%) on temporal gait kinematics.
  • To analyze changes in step length, flight time, step frequency, contact time, and heart rate at iso-efficiency speed (IES).

Main Methods:

  • 65 male marathon runners participated in the study.
  • Two-dimensional (2D) video analysis using Dartfish software captured motion at 210 Hz.
  • Heart rate was monitored throughout the running trials on a treadmill at varying gradients.

Main Results:

  • Increasing treadmill gradients led to significant decreases in step length (SL), flight time (FT), and step frequency (SF).
  • Contact time (CT) and heart rate (HR) significantly increased with higher gradients.
  • Specific percentage changes were quantified for each parameter across different slopes (e.g., SL decreased by 8.38% from 0% to 2% gradient).

Conclusions:

  • Running on slopes at iso-efficiency speed elicits distinct changes in temporal gait kinematics compared to level running.
  • The findings suggest that optimal running speeds on slopes can be determined without necessarily increasing metabolic demand.
  • This research provides valuable data for runners and coaches aiming to adapt training for varied terrain.