RT info:eu-repo/semantics/article
T1 Can Pacing Be Regulated by Post-Activation Potentiation? Insights from a Self-Paced 30 km Trial in Half-Marathon Runners
A1 Del Rosso, Sebastián
A1 Barros, Edilberto
A1 Tonello, Laís
A1 Oliveira Silva, Iransé
A1 Behm, David G
A1 Foster, Carl
A1 Boullosa Álvarez, Daniel Alexandre
A2 Educacion Fisica y Deportiva
K1 Educación Física
K1 Fatigue
K1 Running
K1 Sports
K1 Exercise
K1 Heart Rate
K1 Human Performance
K1 Jumping
AB [EN] PurposeGiven the co-existence of post-activation potentiation (PAP) and fatigue within muscle, it is not known whether PAP could influence performance and pacing during distance running by moderating fatigue. The aim of this study was to assess the influence of PAP on pacing, jumping and other physiological measures during a self-paced 30 km trial.MethodsEleven male endurance-trained runners (half-marathon runners) volunteered to participate in this study. Runners participated in a multi-stage 30 km trial. Before the trial started, determination of baseline blood lactate (bLa) and countermovement jump (CMJ) height was performed. The self-paced 30 km trial consisted of 6 × 5 km splits. At the end of each 5 km split (60 s break), data on time to complete the split, CMJ height, Rating of Perceived Exertion (RPE) and blood lactate were collected while heart rate was continuously monitored.ResultsThere was a significant decrease in speed (e.g. positive pacing strategy after the 4th split, p<0.05) with a progressive increase in RPE throughout the trial. Compared with baseline, CMJ height was significantly (p<0.05) greater than baseline and was maintained until the end of the trial with an increase after the 5th split, concomitant with a significant reduction in speed and an increase in RPE. Significant correlations were found between ΔCMJ and ΔSPEED (r = 0.77 to 0.87, p<0.05) at different time points as well as between RPE and speed (r = -0.61 to -0.82, p<0.05).ConclusionOur results indicates that fatigue and potentiation co-exist during long lasting endurance events, and that the observed increase in jump performance towards the end of the trial could be reflecting a greater potentiation potentially perhaps counteracting the effects of fatigue and preventing further reductions in speed.
PB Public Library of Science
LK https://hdl.handle.net/10612/18956
UL https://hdl.handle.net/10612/18956
NO Del Rosso, S.; Barros, E.; Tonello, L.; Oliveira Silva, I.; Behm, D. G.; Foster, C.; Boullosa Álvarez, D. A. (2016). Can Pacing Be Regulated by Post-Activation Potentiation? Insights from a Self-Paced 30 km Trial in Half-Marathon Runners. PLOS ONE, 11
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 13-may-2024