Optimal velocity loss threshold for inducing post activation potentiation in track and field athletes

Zihang Yuan; Kaifang Liao; Yumei Zhang; Mengyuan Han; Chris Bishop; Zhili Chen; Xiaohua Zhang; Guochao Zhang; Yongming Li

doi:10.5114/biolsport.2023.119284

eISSN: 2083-1862
ISSN: 0860-021X

Biology of Sport

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2/2023
vol. 40

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abstract:

Original paper

Optimal velocity loss threshold for inducing post activation potentiation in track and field athletes

Zihang Yuan

^{1, 2}

,

Kaifang Liao

¹

,

Yumei Zhang

¹

,

Mengyuan Han

¹

,

Chris Bishop

³

,

Zhili Chen

¹

,

Xiaohua Zhang

¹

,

Guochao Zhang

¹

,

Yongming Li

^{1, 4}

School of Physical Education and Sport Training, Shanghai University of Sport, Shanghai, China
Hangzhou No.2 High School of Zhejiang Province, Zhejiang, China
Faculty of Science and Technology, London Sport Institute, Middlesex University, London, United Kingdom
China Institute of Sport Science, Beijing, China

Biol Sport. 2023;40(2):603–609

DOI: https://doi.org/10.5114/biolsport.2023.119284

Online publish date: 2022/09/06

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The aim of this study was to determine the optimal velocity loss (VL) threshold that maximises the post activation potentiation (PAP) stimulus for achieving larger and more consistent performance gains in track and field athletes. Twenty-two athletes from athletics participated in four back squat PAP tests with four different VL threshold (5%, 10%, 15% and 20% VL) at an intensity of 85%1RM. Countermovement jump (CMJ) height, power, and momentum were assessed before, and 10 s, 4, 8, 12, 16 minutes after the PAP condition. Repetitions of the squat in all the PAP conditions were also recorded. Only the 5% VL condition produced significant improvements in height (ES = 0.73, P = 0.038), peak power output (ES = 0.73, P = 0.038) and momentum (ES = 0.72, P = 0.041) of CMJ, and these changes appeared 8 minutes after the condition. The total number of repetitions during the 5% VL condition was significantly lower than that observed in the 15% (P = 0.003) and 20% VL (P < 0.001) trials. The results from this study indicate that 5%VL during the 2 sets preconditioning squat at 85%1RM was optimal for eliciting PAP in a CMJ exercise, and resulted in significant increases at the 8-min recovery period. The same squat condition also had the least number of repetitions. However, considering the efficiency in practice, athletes can also choose the rest time of 4-min, which can also achieve similar results.

keywords:

Optimal velocity loss threshold for inducing post activation potentiation in track and field athletes

Zihang Yuan 1, 2 , Kaifang Liao 1 , Yumei Zhang 1 , Mengyuan Han 1 , Chris Bishop 3 , Zhili Chen 1 , Xiaohua Zhang 1 , Guochao Zhang 1 , Yongming Li 1, 4

counter movement jump, jump height, peak power output, momentum, squat

Zihang Yuan

^{1, 2}

,

Kaifang Liao

¹

,

Yumei Zhang

¹

,

Mengyuan Han

¹

,

Chris Bishop

³

,

Zhili Chen

¹

,

Xiaohua Zhang

¹

,

Guochao Zhang

¹

,

Yongming Li

^{1, 4}