PLoS ONE (Jan 2021)

Comparison of post-activation performance enhancement (PAPE) after isometric and isotonic exercise on vertical jump performance.

  • Salvador Vargas-Molina,
  • Ulises Salgado-Ramírez,
  • Iván Chulvi-Medrano,
  • Leandro Carbone,
  • Sergio Maroto-Izquierdo,
  • Javier Benítez-Porres

DOI
https://doi.org/10.1371/journal.pone.0260866
Journal volume & issue
Vol. 16, no. 12
p. e0260866

Abstract

Read online

PurposeThis study aimed to compare the post-activation performance enhancement (PAPE) induced by isometric and isotonic exercise on vertical jump performance.Methods18 healthy trained men (25.8±2.7 years; 78.4±8.2 kg; 175.7±6.1 cm; 25.4±1.8 BMI; 126.72±10.8 kg squat 1-RM) volunteered for this study. They randomly performed two different PAPE protocols: Isotonic squats (ISOTS), which consisted of 2 sets of 3 repetitions at 75% of one-maximum repetition (1-RM); and isometric squats (ISOMS), which consisted of 2 sets of 4 seconds of submaximal (75% of 1-RM) isometric contraction at 90°-knee flexion. Countermovement jump (CMJ) height was tested at baseline and 4 minutes after each conditioning set.ResultsCMJ height significantly increased after set 1 in both PAPE protocols (ISOMS: p 0.05) were found between both isometric and isotonic exercise conditions.ConclusionsDespite both protocols showed similar PAPE effects on CMJ height after set 1, none of the protocols demonstrated greater efficacy in increasing subsequent performance in healthy trained men.