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Investigating Pain-Related Avoidance Behavior using a Robotic Arm-Reaching Paradigm

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"Just One More Rep!" - Ability to Predict Proximity to Task Failure in Resistance Trained Persons.

Cedrik Armes^1,2, Henry Standish-Hunt¹, Patroklos Androulakis-Korakakis¹

¹Centre for Health, Exercise and Sport Science, School of Sport, Health and Social Sciences, Solent University, Southampton, United Kingdom.

Frontiers in Psychology

|January 11, 2021

Summary

Experienced resistance trainees often misjudge their proximity to maximum effort, underestimating repetitions to momentary task failure (MF). This inaccuracy impacts training intensity control and adaptation potential.

Keywords:

effort exercise perception performance physical strength

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Area of Science:

Exercise Physiology
Sports Science
Biomechanics

Background:

Monitoring training intensity is crucial for optimizing resistance training outcomes.
Predicting proximity to momentary task failure (MF) using repetitions in reserve (RIR) is a common approach.
The accuracy of MF prediction relies on the congruence between perceived and actual effort.

Purpose of the Study:

To investigate the accuracy of predicting momentary task failure (MF) in resistance-trained individuals.
To examine if perceived effort aligns with actual effort during resistance exercise.
To assess the implications of prediction inaccuracy on training programming and adaptations.

Main Methods:

Participants with at least one year of resistance training experience predicted their proximity to MF.
Two experiments were conducted using knee extensions at 70% of 1RM or daily MVC.
A deception design was employed, comparing self-determined repetition maximum (sdRM) with actual MF.

Main Results:

Participants consistently underpredicted the number of repetitions to MF, with a meta-analytic estimate of 2.0 repetitions.
Trained individuals demonstrated inadequate accuracy in gauging effort during submaximal resistance exercise.
Perceptions of effort were often incongruent with the actual physical exertion required.

Conclusions:

Resistance-trained individuals may not accurately gauge their effort, impacting training intensity management.
Inaccurate effort perception has significant implications for resistance training prescription and programming.
Optimizing training adaptations like hypertrophy and strength may be hindered by poor effort prediction.