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Marco J. Konings, Jordan Parkinson, Inge Zijdewind and Florentina J. Hettinga

and by relating these to neuromuscular adjustments in the knee extensors and perceived exertion. We hypothesized that the presence of a virtual opponent would invite a change in pacing and evoke an improvement in performance, leading to a greater decline in voluntary muscle force after a 4-km TT than

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Mallory R. Marshall and James M. Pivarnik


Maternal physical activity declines across gestation, possibly due to changing perception of physical activity intensity. Our purpose was to a) determine whether rating of perceived exertion (RPE) during a treadmill exercise changes at a given energy expenditure, and b) identify the influence of prepregnancy physical activity behavior on this relationship.


Fifty-one subjects were classified as either exercisers (N = 26) or sedentary (N = 25). Participants visited our laboratory at 20 and 32 weeks gestation and at 12 weeks postpartum. At each visit, women performed 5 minutes of moderate and vigorous treadmill exercise; speed was self-selected. Heart rate (HR), oxygen consumption (VO2), and RPE were measured during the last minute at each treadmill intensity.


At moderate intensity, postpartum VO2 was higher compared with 20- or 32-week VO2, but there was no difference for HR or RPE. For vigorous intensity, postpartum HR and VO2 were higher than at 32 weeks, but RPE was not different at any time points.


RPE does not differ by pregnancy time point at either moderate or vigorous intensity. However, relative to energy cost, physical activity was perceived to be more difficult at 32 weeks compared with other time points. Pregnant women, then, may compensate for physiological changes during gestation by decreasing walking/running speeds.

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Robert H. Mann, Craig A. Williams, Bryan C. Clift and Alan R. Barker

. Consequently, the session rating of perceived exertion (sRPE), an athlete’s subjective RPE multiplied by session duration (in minutes), has been established as a simple and valid measure of ITL. 7 Based on the formative research of Foster et al, 8 sRPE is typically reported 30 minutes following session

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Laura Pomportes, Jeanick Brisswalter, Arnaud Hays and Karen Davranche

performance in high-level Modern Pentathlon athletes. We also investigated the effect of these 3 nutritional supplements on rating of perceived exertion (RPE), which could be defined as “the feeling of how hard, heavy, and strenuous a physical task is.” 15 Modification of RPE during exercise is particularly

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Youri Geurkink, Gilles Vandewiele, Maarten Lievens, Filip de Turck, Femke Ongenae, Stijn P.J. Matthys, Jan Boone and Jan G. Bourgois

of a training session’s duration and intensity. 2 Duration is quantifiable in time and relatively easy to measure. On the other hand, intensity can be quantified using different methods, such as heart rate (HR) monitoring, blood lactate concentrations, and the (session) rating of perceived exertion

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Pablo Jodra, Raúl Domínguez, Antonio J. Sánchez-Oliver, Pablo Veiga-Herreros and Stephen J. Bailey

single sprint and/or repeated sprint/high-intensity intermittent exercise performance following NO 3 − supplementation. 8 In addition to physiological factors within the skeletal muscle, it is recognized that psychological factors, such as mood and ratings of perceived exertion (RPE), can play a role in

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Andrew D. Govus, Aaron Coutts, Rob Duffield, Andrew Murray and Hugh Fullagar

’s psychobiological training load is the session rating-of-perceived-exertion (s-RPE) training load (session duration [in minutes] × RPE [using either CR-10, CR-100 or 6–20 scales]). 2 Several early studies established the construct validity of s-RPE training load against other forms of internal load (such as heart

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Stephen H. Boutcher, Lori A. Fleischer-Curtian and Scott D. Gines

This study was designed to examine the audience-pleasing and self-constructional aspects of self-presentation on perceived exertion. Subjects performed two 18-min sessions on a cycle ergometer at light, moderate, and heavy workloads, during which perceived exertion and heart rate were collected. Each subject participated in a male and female experimenter condition. Males reported significantly lower perceived exertion in the female experimenter condition at the heavy load, compared to the same load in the male experimenter condition. There were no other significant differences for males or females at any of the workloads in either condition. Responses on the Self-Monitoring Inventory were used to assign subjects to either a high or low self-construction group. Results indicated that high self-constructors recorded significantly lower perceived exertion, compared to low self-constructors, at the low and moderate workloads.

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Monoem Haddad, Johnny Padulo and Karim Chamari

Despite various contributing factors, session rating of perceived exertion has the potential to affect a large proportion of the global sporting and clinical communities since it is an inexpensive and simple tool that is highly practical and accurately measures an athlete’s outcome of training or competition. Its simplicity can help optimize performance and reduce negative outcomes of hard training in elite athletes.

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Farhan Juhari, Dean Ritchie, Fergus O’Connor, Nathan Pitchford, Matthew Weston, Heidi R. Thornton and Jonathan D. Bartlett

athletes within the same session. One monitoring tool that circumvents some of these issues is the session rating of perceived exertion (s-RPE). The RPE scale was designed as a psychophysical self-report scale with varying psychometric properties, which relate a psychological aspect to the level of