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Related Experiment Video

Updated: Feb 6, 2026

Determining The Electromyographic Fatigue Threshold Following a Single Visit Exercise Test

Determining The Electromyographic Fatigue Threshold Following a Single Visit Exercise Test

Published on: July 27, 2015

COMPARISON OF CLINICAL FATIGUE PROTOCOLS TO DECREASE SINGLE-LEG FORWARD HOP PERFORMANCE IN HEALTHY INDIVIDUALS.

Allison K White¹, Chelsea J Klemetson¹, Brooke Farmer¹

¹Department of Physical Therapy, Creighton University, Omaha, NE, USA.

International Journal of Sports Physical Therapy

|August 10, 2018

Summary

The two-minute lateral step-down test caused a greater decline in hop distance than the 30-second side-hop test. This fatigue test may better simulate sports performance for return-to-sport decisions after anterior cruciate ligament reconstruction.

Keywords:

Anterior cruciate ligament reconstruction fatigue knee rehabilitation return to sport

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Evaluating the Role of Mitochondrial Function in Cancer-related Fatigue

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Published on: May 17, 2018

Area of Science:

Sports Medicine
Rehabilitation Science
Biomechanics

Background:

Functional performance tests for return to activity after anterior cruciate ligament reconstruction (ACL-R) are often limited by non-fatigued testing conditions.
Fatigue can enhance the sensitivity of these tests, but current methods for inducing fatigue are often bilateral or isolate quadriceps muscles.

Purpose of the Study:

To compare the effects of a two-minute lateral step-down fatigue test versus a 30-second side-hop test on single-leg forward hop distance in healthy individuals.
To determine if the two-minute lateral step-down test induces greater deficits in hop performance compared to the 30-second side-hop test.

Main Methods:

A randomized crossover design was employed with 20 healthy participants.
Participants performed single-leg forward hop for distance tests pre- and post-fatigue, undergoing both the 30-second side-hop and two-minute lateral step-down fatigue tests in separate sessions.

Main Results:

Both fatigue tests significantly decreased single-leg forward hop distance (p < 0.001).
The two-minute lateral step-down test resulted in a significantly greater reduction in hop distance compared to the 30-second side-hop test (p < 0.001).

Conclusions:

The two-minute lateral step-down test is more effective at reducing hop performance than the 30-second side-hop test.
This test may provide a more sport-relevant fatigue stimulus to inform return-to-sport decisions following anterior cruciate ligament reconstruction by establishing expected performance changes in healthy individuals.