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Eur J Appl Physiol. 2019 Sep;119(9):2083-2094. doi: 10.1007/s00421-019-04197-4. Epub 2019 Aug 1.

Treadmill running using an RPE-clamp model: mediators of perception and implications for exercise prescription.

Author information

1
Department of Kinesiology, California State University, Fresno, CA, 93740, USA. Kristen.snyman@cuchicago.edu.
2
Department of Health and Human Performance, College of Innovation and Professional Programs, Concordia University Chicago, Chicago, IL, 60305, USA. Kristen.snyman@cuchicago.edu.
3
Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE, 68505, USA.
4
College of Health Sciences, Kinesiology, University of Texas At El Paso, El Paso, TX, 79968, USA.
5
Division of Kinesiology, School of Kinesiology and Physical Therapy, University of Central Florida, Orlando, FL, 32816, USA.
6
School of Kinesiology, Applied Health and Recreation, Oklahoma State University, Stillwater, OK, 74078, USA.
7
Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, 74078, USA.

Abstract

PURPOSE:

The mediators of the perception of effort during exercise are still unclear. The aim of the present study was to examine physiological responses during runs using a rating of perceived exertion (RPE)-clamp model at the RPE corresponding to the gas exchange threshold (RPEGET) and 15% above GET (RPEGET+15%) to identify potential mediators and performance applications for RPE during treadmill running.

METHODS:

Twenty-one runners ([Formula: see text]max = 51.7 ± 8.3 ml kg-1 min-1) performed a graded exercise test to determine maximal oxygen consumption and the RPE associated with GET and GET + 15% followed by randomized 60 min RPE-clamp runs at RPEGET and RPEGET+15%. Mean differences for [Formula: see text], heart rate (HR), minute ventilation ([Formula: see text]), respiratory frequency ([Formula: see text], respiratory exchange ratio (RER), and velocity were compared across each run.

RESULTS:

After minute 14, [Formula: see text], RER and velocity did not differ across conditions, but decreased across time (p < 0.05). There was a significant (p < 0.05) condition × time interaction for [Formula: see text], where values were significantly higher during RPE-clamp runs at RPEGET+15% and decreased across time in both conditions. There were no differences across condition or time for HR, and only small difference between conditions for [Formula: see text].

CONCLUSIONS:

HR and [Formula: see text] may play a role in mediating the perception of effort, while [Formula: see text], RER, and [Formula: see text] may not. Although HR and [Formula: see text] may mediate the maintenance of a perceptual intensity, they may not be sensitive to differentiate perceptual intensities at GET and GET + 15%. Thus, prescribing exercise using an RPE-clamp model may only reflect a sustainable [Formula: see text] within the moderate intensity domain.

KEYWORDS:

Exercise prescription; Rating of perceived exertion; Rpe-clamp; Running

PMID:
31372804
DOI:
10.1007/s00421-019-04197-4

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