Acute Performance Enhancement Following Squats Combined With Elastic Bands on Short Sprint and Vertical Jump Height in Female Athletes

Abstract

Krčmár, M, Krčmárová, B, Bakaľár, I, and Šimonek, J. Acute performance enhancement after squats combined with elastic bands on short sprint and vertical jump height in female athletes. J Strength Cond Res 35(2): 318–324, 2021—The main purpose of this study was to compare back squats with and without elastic bands on sprint and vertical jump height. Fourteen female athletes (21.9 ± 2.3 years; 177.5 ± 6.36 cm; 66.2 ± 6.2 kg; 1 repetition maximum [1RM]/ body mass: 1.96 ± 0.14) agreed to participate. On 4 separate days, athletes walked freely for 5 minutes (CON), performed 3 sets of 4 repetitions at 85% of their 1RM with 20% or 30% (BAND20 or BAND30) of the total resistance originated from elastic bands, or performed 3 sets and 4 repetitions at 85% of their 1RM with an isoinertial load (ISO) before performance tests. Posttesting began 5 and 10 minutes after the last set of squats and included sprints over 3, 5, and 10-m, squat jump (SJ), and countermovement (CMJ) vertical jump height. The results of this study show that all postactivation performance enhancement (PAPE) protocols significantly improved 10-m sprint time (p < 0.05 to p < 0.01). Only BAND30 significantly improved 3-m and 5-m sprint times at both times of posttesting (p < 0.01). Comparison of PAPE protocols showed a significant difference when comparing BAND30 vs. ISO in SJ height in favor of BAND30 only when the best SJ height results from both posttesting times were selected (p < 0.01, g = 1.08). The results of this study suggest that all PAPE protocols were able to enhance short sprints and vertical jump height, but it seems that there is a greater trend to achieve better performance after performing the BAND30 protocol that can be seen by higher effect sizes achieved almost in all tests compared with the other PAPE protocols.

Effects of Variable Resistance Training within Complex Training on Neuromuscular Adaptations in Collegiate Basketball Players

“…To ensure similar loading across both groups, half of the variable resistance (17% 1RM) was removed from the free-weight in the VRT group, as previously reported ( Krčmár et al, 2021 ; Mina et al, 2019 ). In addition, when adjusting the intensity of the back squat throughout the intervention, the contribution of variable resistance remained constant and only the free-weight varied in the VRT group ( Andersen et al, 2015 ).…”

“…Given that muscle activation partly underpin PAPE (Tillin and Bishop, 2009), it might be hypothesized that a higher contribution of variable resistance in VRT may better potentiate subsequent power performance. This notion is somewhat supported in the research whereby a 30% VRT condition (30% of the total load (85% 1repetition maximum (RM)) induced a greater PAPE in selective power outcomes than 20% VRT conditions (Krčmár et al, 2021). However, another study using similar loading reported no significant between-group differences in all posttests (Wyland et al, 2015).…”

“…The lack of powerful tasks within the intervention may result in the unchanged power outcomes. Recently, some studies demonstrated the benefit of acute power increases following VRT by inducing postactivation performance enhancement (PAPE) ( Krčmár et al, 2021 ; Mina et al, 2019 ). Typically, PAPE proposes that a high-intensity conditioning activity induces a performance-enhancing physiological mechanism previously called postactivation potentiation (PAP) (Blazevich amd Babault, 2019).…”

Seven-Week Accommodating Resistance Training Improves Wingate Peak Power But Not Muscular Strength or Endurance in Strength-Trained Females

“…Among these studies, those that compared AR with traditional BS and BP after multiple weeks of application observed increases in power, RFD, or maximal strength (1,2,6,9,14). However, the current investigators are aware of only 1 AR study having been conducted in a female only cohort, and it implemented an acute postactivation potentiation protocol (8). Owing to the physiological differences between males and females (i.e., muscle fiber composition and density, fatigue rates, recovery capacity, etc), results of previous research in alternative cohorts cannot be extrapolated to trained females.…”

ผลของการฝึกด้วยแรงต้านแบบผสมผสานยางยืดโดยใช้คลัสเตอร์เซตต่อความแข็งแรงและพลังของท่าคลีนพูลในนักกีฬายกน้ำหนักยุวชน

“…In Drinkwater et al, 2005;Izquierdo et al, 2006;Latella et al, 2019;Lawton et al, 2004) ประกอบกั บมี งานวิ จั ยจำนวนมากค้ น พบว่ าการฝึ กทั ้ งสองรู ปแบบสามารถเพิ ่ มสมรรถภาพหลั งการกระตุ ้ นได้ ดี (Iacono et al, 2019;Israetel et al, 2010;Krcmár et al, 2021;Nickerson et al, 2018;Wyland et al, 2015) ผู Comfort et al, 2015;Garhammer, 1982;Haff et al, 2003;Hydock, 2001;Kawamori et al, 2006;Macke, 2018) (Everett, 2012)…”