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Related Concept Videos

Muscle Recovery and Fatigue01:24

Muscle Recovery and Fatigue

Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective response...

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Related Experiment Video

Updated: Jun 5, 2026

Experimental Protocol of a Three-minute, All-out Arm Crank Exercise Test in Spinal-cord Injured and Able-bodied Individuals
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Effects of protocol design on lactate minimum power.

M A Johnson1, G R Sharpe

  • 1Nottingham Trent University, School of Science and Technology, Nottingham, United Kingdom. michael.johnson@ntu.ac.uk

International Journal of Sports Medicine
|December 18, 2010
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Summary

The lactate minimum power is slightly affected by starting power and rest intervals during incremental exercise tests. These small changes do not compromise the test

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Area of Science:

  • Exercise Physiology
  • Sports Science
  • Biotechnology

Background:

  • The lactate minimum test is a valuable tool for assessing endurance exercise performance.
  • Understanding factors influencing the lactate minimum power is crucial for accurate training status evaluation.
  • Optimizing incremental test protocols ensures reliable physiological data.

Purpose of the Study:

  • To investigate the impact of starting power on blood lactate responses and lactate minimum power.
  • To determine if 1-minute rest intervals during the incremental phase affect lactate minimum power.
  • To evaluate the validity of the lactate minimum test protocol under varied conditions.

Main Methods:

  • Eight subjects performed a lactate minimum test with varying starting power (40% vs. 45% max power).
  • A second study involved 8 subjects performing the test with and without 1-minute inter-stage rest intervals.
  • Blood lactate levels and power output were measured throughout the incremental phase.

Main Results:

  • Lactate minimum power was significantly lower when the incremental phase started at 40% compared to 45% of maximum power.
  • Including 1-minute rest intervals during the incremental phase increased the measured lactate minimum power.
  • Despite statistical significance, the observed changes in lactate minimum power were small.

Conclusions:

  • The lactate minimum test protocol remains valid for assessing training status and guiding exercise prescription.
  • Minor adjustments in starting power and inclusion of short rest intervals have limited impact on overall test interpretation.
  • Further research can explore optimal protocols for specific athlete populations.