Changes in vertical jump performance and body composition before and after COVID-19 lockdown

IF 0.5 Q4 SPORT SCIENCES

Journal of Human Sport and Exercise Pub Date : 2022-01-01 DOI:10.14198/jhse.2023.181.18

E. Tan, Samuel Montalvo, Matthew P. Gonzalez, Martin S. Dietze-Hermosa, Se-Eun Min, S. Dorgo

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引用次数: 1

Abstract

This study aimed to determine the effects of a 16-week COVID-19 lockdown on body composition and vertical jump performance. Thirteen martial artists participated in this study. Participants were tested at: 1) pre-lockdown (pre), 2) post-lockdown (post), 3) two-weeks-post-lockdown (post+2), and 4) four-weeks-post-lockdown (post+4). Repeated-measures-ANOVAs were conducted with post-hoc analyses. Differences were observed in vertical jump height (VJH) (10.33%), peak velocity (PV) (3.10%), reactive-strength-index-modified (RSImod) (13.8%), and peak-propulsive-power (PPP) (6.00%) from pre-to-post. There as an increase from post-to-post+2 in VJ (13.06%), PV (4.12%), RSImod (14.0%), and PPP (4.66%). There was an increase from post to post+2 in VJH (10.8%), PV (3.1%), RSImod (14.0%), and PPP (3.0%). Fat mass (FM) and BF% increased from pre to post (13% and 11%, respectively) and decreased from post to post+4 (8% and 11%, respectively);fat-free mass (FFM) decreased from pre-to-post (11%) and decreased from post-to-post+4 (8%). There were moderate associations (rmc = 0.42-0.47) between FFM and VJH, FMM and PPP, FFM and PV, BF% and PV, and FM and PV. While the lockdown resulted in a significant decrease in vertical jump performance and increases in BF and FM, participant's performance returned to pre-lockdown levels after only 2-4 weeks of post-lockdown training by decreasing BF, FM, and increasing FFM. © Faculty of Education. University of Alicante.

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冠状病毒封锁前后垂直跳跃性能和身体成分的变化

本研究旨在确定为期16周的COVID-19封锁对身体成分和垂直跳跃性能的影响。13位武术家参与了这项研究。参与者在以下时间接受测试:1)封锁前(前)、2)封锁后(后)、3)封锁后两周(后+2)和4)封锁后四周(后+4)。采用事后分析进行重复测量-方差分析。在垂直跳高(VJH)(10.33%)、峰值速度(PV)(3.10%)、反应强度指数修正(RSImod)(13.8%)和峰值推进功率(PPP)(6.00%)方面，前后差异显著。VJ(13.06%)、PV(4.12%)、RSImod(14.0%)和PPP(4.66%)从post-to-post+2增加。VJH(10.8%)、PV(3.1%)、RSImod(14.0%)和PPP(3.0%)从岗位增加到岗位+2。脂肪质量(FM)和BF%从前岗到后岗分别增加13%和11%，从后岗到后岗+4分别减少8%和11%;无脂质量(FFM)从前岗到后岗减少11%，从后岗到后岗+4降低8%。FFM与VJH、FMM与PPP、FFM与PV、BF%与PV、FM与PV之间存在中等相关性(rmc = 0.42 ~ 0.47)。虽然封锁导致垂直跳跃表现显著下降，BF和FM增加，但参与者在封锁后仅进行2-4周的训练后，通过减少BF、FM和增加FFM，表现恢复到封锁前的水平。©教育学院。阿利坎特大学。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Human Sport and Exercise SPORT SCIENCES-

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

6 weeks

期刊介绍： JHSE contributes to the continuing professional development of sport and exercise sciences, including a high-level research in biomechanics, exercise physiology, sports history, nutrition, and a wide range of social and ethical issues in physical activity, and other aspects of sports medicine related quality of life and biophysical investigation of sports performance.