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Related Concept Videos

Muscle Coordination and Action01:24

Muscle Coordination and Action

Muscle coordination is a complex and finely tuned process essential for smooth and purposeful movements like flexion, extension, adduction, abduction, and rotation. The human body orchestrates the actions of various muscles working in concert, each with a specific role. Four functional types describe how muscles work together: agonist, antagonist, synergist, and fixator.
Agonists
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Hierarchy of Motor Control01:18

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Motor Unit Stimulation01:20

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Related Experiment Video

Updated: May 27, 2026

Methods to Quantify Pharmacologically Induced Alterations in Motor Function in Human Incomplete SCI
14:55

Methods to Quantify Pharmacologically Induced Alterations in Motor Function in Human Incomplete SCI

Published on: April 18, 2011

Muscle coordination patterns for efficient cycling.

Ollie M Blake1, Yvan Champoux, James M Wakeling

  • 1Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada. omb@sfu.ca

Medicine and Science in Sports and Exercise
|November 18, 2011
PubMed
Summary
This summary is machine-generated.

Efficient cycling relies on coordinated muscle activation patterns, particularly around 55%-60% V˙O(2max). Optimizing muscle recruitment and ankle movement enhances overall mechanical efficiency (ηO) during cycling.

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Last Updated: May 27, 2026

Methods to Quantify Pharmacologically Induced Alterations in Motor Function in Human Incomplete SCI
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11:31

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Published on: December 5, 2014

Area of Science:

  • Biomechanics
  • Exercise Physiology
  • Sports Science

Background:

  • Cycling involves complex muscle coordination for power generation.
  • Muscle recruitment patterns can vary, impacting overall mechanical efficiency (ηO).
  • Understanding these patterns is key to optimizing cycling performance.

Purpose of the Study:

  • To identify relationships between muscle coordination and factors influencing it.
  • To explain how muscle coordination affects overall mechanical efficiency (ηO) in cycling.
  • To determine optimal muscle activation patterns for efficient cycling.

Main Methods:

  • Surface electromyography (EMG), kinematics, and pedal forces were recorded at various intensities (25%-90% V˙O(2max)).
  • Principal component analysis (PCA) was employed to analyze muscle coordination, kinematic, and pedal force patterns.
  • Patterns associated with high and low mechanical efficiency (ηO) were identified.

Main Results:

  • Mechanical efficiency (ηO) was maximized at 55%-60% V˙O(2max) and strongly correlated with specific muscle coordination patterns.
  • High ηO involved increased activity in gastrocnemii and soleus, reduced activity in gluteus maximus and tibialis anterior, and altered timing of vastii and biceps femoris.
  • Ankle kinematics showed greater plantar flexion during downstroke and dorsiflexion during upstroke for high ηO; pedal force was independent of efficiency.

Conclusions:

  • Increased mechanical efficiency (ηO) is achieved through coordinated muscle activation across joints and sequential peak activations (knee to hip to ankle).
  • Reliance on multiple muscles for joint torques and variability in muscle activity contribute to efficient cycling.
  • Cycling at 55%-60% V˙O(2max) provides the greatest opportunity for riders to engage in highly efficient muscle coordination and kinematics.