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Wouter Schallig, Tim Veneman, Dionne A. Noordhof, José A. Rodríguez-Marroyo, John P. Porcari, Jos J. de Koning and Carl Foster

-power output. In this way, the use of the perceived-exertion template as feedback mechanism prevents the exercise intensity from threatening homeostasis. 7 , 18 , 19 Another model that explains pacing regulation is the psychobiological model, 20 , 21 which is based on motivational-intensity theory. 22

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Martin J. Barwood, Jo Corbett, Christopher R.D. Wagstaff, Dan McVeigh and Richard C. Thelwell


Unpleasant physical sensations during maximal exercise may manifest themselves as negative cognitions that impair performance, alter pacing, and are linked to increased rating of perceived exertion (RPE). This study examined whether motivational self-talk (M-ST) could reduce RPE and change pacing strategy, thereby enhancing 10-km time-trial (TT) cycling performance in contrast to neutral self-talk (N-ST).


Fourteen men undertook 4 TTs, TT1–TT4. After TT2, participants were matched into groups based on TT2 completion time and underwent M-ST (n = 7) or N-ST (n = 7) after TT3. Performance, power output, RPE, and oxygen uptake (VO2) were compared across 1-km segments using ANOVA. Confidence intervals (95%CI) were calculated for performance data.


After TT3 (ie, before intervention), completion times were not different between groups (M-ST, 1120 ± 113 s; N-ST, 1150 ± 110 s). After M-ST, TT4 completion time was faster (1078 ± 96 s); the N-ST remained similar (1165 ± 111 s). The M-ST group achieved this through a higher power output and VO2 in TT4 (6th–10th km). RPE was unchanged. CI data indicated the likely true performance effect lay between 13- and 71-s improvement (TT4 vs TT3).


M-ST improved endurance performance and enabled a higher power output, whereas N-ST induced no change. The VO2 response matched the increase in power output, yet RPE was unchanged, thereby inferring a perceptual benefit through M-ST. The valence and content of self-talk are important determinants of the efficacy of this intervention. These findings are primarily discussed in the context of the psychobiological model of pacing.

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Stacey Alvarez-Alvarado, Graig M. Chow, Nicole T. Gabana, Robert C. Hickner and Gershon Tenenbaum

threshold ( Hutchinson & Tenenbaum, 2007 ). Recent studies used the dynamical approach to clarify the functional role of the exertion and attention fluctuations in the physically constraint environment ( Van Orden, Kloos, & Wallot, 2011 ). Specifically, the dynamic psychobiological model of exercise

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James Hardy, Nikos Comoutos and Antonis Hatzigeorgiadis

self-efficacy and anxiety, a new perceptually oriented mechanism, grounded in the psychobiological model of endurance performance ( Marcora, Bosio, & Morree, 2008 ; Marcora, Staiano, & Manning, 2009 ), emphasizing the role of perceived exertion was reported. This model has inspired a number of recent