Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2023) 22, 502 - 511   DOI: https://doi.org/10.52082/jssm.2023.502

Research article
Acute Effects of Back Squat Combined with Different Elastic Band Resistance on Vertical Jump Performance in Collegiate Basketball Players
Lin Shi1,2,3, , Xin Ye4, Dong Han3, Chengbo Yang5, Yanhao Tu2
Author Information
1 Center for Post-doctoral Studies of Sport Science, Chengdu Sport University, Chengdu, China
2 School of Physical Education, Chengdu Sport University, Chengdu, China
3 School of Elite Sport, Shanghai University of Sport, Shanghai, China
4 Department of Rehabilitation Sciences, University of Hartford, West Hartford, USA
5 School of Sport Training, Chengdu Sport University, Chengdu, China

Lin Shi
✉ School of Physical Education, Chengdu Sport University, Chengdu, China.
Email: lynnssport@163.com
Publish Date
Received: 20-04-2022
Accepted: 10-08-2023
Published (online): 01-09-2023
 
 
ABSTRACT

The purpose of this study was to compare the acute effects of back squat exercise with or without elastic band on countermovement jump performance. Thirteen collegiate male basketball players (age: 20.5 ± 0.9 years; height: 188.5 ± 8.5 cm; body mass: 82.8 ± 12.9 kg) completed 5 familiarization and 4 experimental sessions separated by at least 48 hours. In the experimental sessions, the order of the conditions was randomized so that the participants performed 1 set of 3 repetitions of barbell back squat at 85% of their one-repetition maximum (1-RM), 1 set of 3 repetitions of back squat at 85% 1-RM with 20% variable resistance training (VRT), 30%VRT, or 40%VRT of the total load coming from the elastic band. Countermovement jump performance was assessed before (baseline), 30 seconds, 3 minutes, 6 minutes, and 9 minutes following each condition. Jump height, rate of force development, peak power, and vastus lateralis, vastus medialis, and medial gastrocnemius electromyography data were collected. Compared with the baseline, 30%VRT significantly improved jump height at 3 minutes post-exercise by 1.3 cm (P < 0.001) and 6 minutes post-exercise by 1.2 cm (P = 0.005); 40%VRT significantly improved jump height from 30 seconds up to the 9th minute (1.2 to 1.9 cm, P ≤ 0.036). The superior jump height was also accompanied by improved kinetic and electromyography data. No significant changes were observed in the barbell back squat and 20%VRT conditions. In conclusion, back squat at 85% 1-RM with 40% elastic band resistance led to superior vertical jump performance with an optimal time window of 3 minutes.

Key words: Variable resistance training, post-activation potentiation, power


           Key Points
  • Countermovement jump performance increased following a set of three repetitions of back squat at 85% 1-RM with 30% and 40% of the total load from elastic band.
  • Performing the back squat at 85% 1-RM with 40% elastic band resistance led to superior jump performance with an optimal time point of 3 minutes.
  • When analyzing individual peak performance time points, a significant improvement in countermovement jump was observed following the implementation of the traditional barbell back squat and back squat with 20% elastic band resistance.
 
 
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