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Int J Sports Med 2023; 44(05): 329-335
DOI: 10.1055/a-1841-3081
Physiology & Biochemistry

Effects of Training and Taper on Neuromuscular Fatigue Profile on 100-m Swimming Performance

Felipe Alves Ribeiro 
1   Laboratory of Aquatic Activities, University of Sao Paulo School of Physical Education and Sports of Ribeirao Preto, Ribeirão Preto, Brazil
,
Carlos Dellavechia de Carvalho 
2   Health Sciences, Universidade de São Paulo Faculdade de Medicina de Ribeirão Preto, Ribeirão Preto, Brazil
,
Júlia Causin Andreossi
1   Laboratory of Aquatic Activities, University of Sao Paulo School of Physical Education and Sports of Ribeirao Preto, Ribeirão Preto, Brazil
,
Douglas Rodrigues Messias Miranda
1   Laboratory of Aquatic Activities, University of Sao Paulo School of Physical Education and Sports of Ribeirao Preto, Ribeirão Preto, Brazil
,
Marcelo Papoti
1   Laboratory of Aquatic Activities, University of Sao Paulo School of Physical Education and Sports of Ribeirao Preto, Ribeirão Preto, Brazil
› Author Affiliations Funding The authors are grateful for the financial support of the São Paulo Research Foundation (grant no: 2019/06184–2) and also to the swimmers who voluntarily participated in this study.
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Abstract

This study aimed to investigate the effects of 6-week specific preparatory period and 2-week taper period on neuromuscular fatigue profile in 100-m front crawl swimming performance. Seventeen competitive-level young-adult swimmers performed a 100-m swimming performance at baseline and after 6-week specific preparatory followed by 2-week taper periods. Neuromuscular fatigue profile was assessed through percutaneous electrical stimuli on the femoral nerve during a maximal voluntary contraction performed before and immediately after each 100-m maximal effort. Performance improved (p=0.001) 2.24 and 3.06% after specific and taper, respectively. Potentiated peak force at post-effort condition decreased (p<0.001) 16.26% at baseline, 11.70% at specific, and 12.86% at taper period. Maximal voluntary contraction force also decreased (p<0.001) at post-effort condition by about 6.77 and 9.33% at baseline and specific period, respectively. Both variables did not present significant differences between times. No condition or time effects were observed to superimposed peak force and voluntary activation, both related to central fatigue. In conclusion, neuromuscular fatigue during 100-m swimming performance was exclusively developed by peripheral mechanisms regardless of the training period, and 2-week taper was able to prevent decreases in maximal voluntary contraction induced by 100-m maximal effort.

Key words

voluntary activation - twitch interpolation technique - percutaneous electrical stimuli


Publication History

Received: 10 November 2021

Accepted: 28 April 2022

Accepted Manuscript online:
02 May 2022

Article published online:
10 March 2023

© 2023. Thieme. All rights reserved.

Georg Thieme Verlag
Rüdigerstraße 14, 70469 Stuttgart, Germany

 

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