TY - JOUR
T1 - Dynamics of perceived exertion in constant-power cycling
T2 - Time- and workload-dependent thresholds
AU - Balague, Natalia
AU - Hristovski, Robert
AU - GarcÄa, Sergi
AU - Aguirre, Cecilia
AU - Vazquez, Pablo
AU - Razon, Selen
AU - Tenenbaum, Gershon
N1 - Publisher Copyright:
© SHAPE America.
PY - 2015
Y1 - 2015
N2 - Purpose: The purpose of this study was to test the dynamics of perceived exertion shifts (PES) as a function of time and workload during constant-power cycling. Method: Fifty-two participants assigned to 4 groups performed a cycling task at 4 different constant workloads corresponding to their individual rates of perceived exertion (RPEs = 13, 15, 17, and 19, respectively). PES ('increased'decreased perceptions) without magnitude were reported when they occurred. PES 'ncreased' percentages in different nonoverlapping temporal windows and for each workload were calculated to study the time- and workload-dependent relations, respectively. Results: A fluctuating PES dynamic characterized the cycling at RPE- 13 and RPE-15. In contrast, a nonfluctuating PES dynamic characterized the cycling at RPE- 17 and RPE-19. A time-dependent PES threshold, manifested as a switch from PES fluctuating to nonfluctuating dynamics, emerged in the RPE-15 condition near volitional exhaustion. A workload-dependent PES threshold occurred from RPE-15 to RPE-17. Conclusions: Time- and workload-dependent thresholds were revealed studying the PES dynamics in constant cycling. Monitoring PES can complement or provide an alternative to the use of physiological measures for an accurate control of training workloads.
AB - Purpose: The purpose of this study was to test the dynamics of perceived exertion shifts (PES) as a function of time and workload during constant-power cycling. Method: Fifty-two participants assigned to 4 groups performed a cycling task at 4 different constant workloads corresponding to their individual rates of perceived exertion (RPEs = 13, 15, 17, and 19, respectively). PES ('increased'decreased perceptions) without magnitude were reported when they occurred. PES 'ncreased' percentages in different nonoverlapping temporal windows and for each workload were calculated to study the time- and workload-dependent relations, respectively. Results: A fluctuating PES dynamic characterized the cycling at RPE- 13 and RPE-15. In contrast, a nonfluctuating PES dynamic characterized the cycling at RPE- 17 and RPE-19. A time-dependent PES threshold, manifested as a switch from PES fluctuating to nonfluctuating dynamics, emerged in the RPE-15 condition near volitional exhaustion. A workload-dependent PES threshold occurred from RPE-15 to RPE-17. Conclusions: Time- and workload-dependent thresholds were revealed studying the PES dynamics in constant cycling. Monitoring PES can complement or provide an alternative to the use of physiological measures for an accurate control of training workloads.
KW - Dynamical systems
KW - Fluctuating dynamics
KW - Perceived effort shifts
KW - Voluntary exhaustion
UR - http://www.scopus.com/inward/record.url?scp=84964375908&partnerID=8YFLogxK
U2 - 10.1080/02701367.2015.1078870
DO - 10.1080/02701367.2015.1078870
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C2 - 26452399
AN - SCOPUS:84964375908
SN - 0270-1367
VL - 86
SP - 371
EP - 378
JO - Research Quarterly for Exercise and Sport
JF - Research Quarterly for Exercise and Sport
IS - 4
ER -