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Perceived exertion and stimulus intensity modulation

R J Robertson, R L Gillespie, E Hiatt

    Perceptual and Motor Skills
    |August 1, 1977
    PubMed
    Summary
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    Individuals modulating stimulus intensity differently perceive exertion. Augmenters consistently reported higher perceived exertion than reducers across various exercise intensities, indicating a link between modulation style and physical exertion perception.

    Area of Science:

    • Exercise Physiology
    • Perception Science
    • Psychophysics

    Background:

    • Stimulus Intensity Modulation (SIM) describes contrasting perceptual styles: augmentation and reduction.
    • Understanding how these perceptual styles influence physiological responses is crucial.

    Purpose of the Study:

    • To investigate differences in perceived exertion between augmenters and reducers.
    • To examine these differences across varying cycle ergometer workloads.

    Main Methods:

    • Twenty male subjects with similar physiological profiles were recruited.
    • Stimulus Intensity Modulation style was assessed using the kinesthetic figural aftereffect.
    • Perceived exertion was measured at three distinct cycle ergometer workloads (450, 750, 1050 kpm/min).

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    Main Results:

    • Augmenters reported significantly higher perceived exertion than reducers at all tested workloads.
    • No significant differences in physiological responses were observed between augmenters and reducers.
    • Perceived exertion was differentially influenced by SIM style at the studied work levels.

    Conclusions:

    • Perceptual style, specifically Stimulus Intensity Modulation, significantly impacts perceived exertion during exercise.
    • Physiological responses may not directly correlate with these perceptual differences in exertion.
    • Individual differences in sensory processing influence subjective exercise experiences.