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 (2021) 20, 751 - 758   DOI: https://doi.org/10.52082/jssm.2021.751

Research article
Internal and External Load Control in Team Sports through a Multivariable Model
Aitor Piedra1,2, Toni Caparrós1,3, , Jordi Vicens-Bordas2,4, Javier Peña2,3
Author Information
1 National Institute of Physical Education and Sport of Catalonia, University of Barcelona, Barcelona, Spain
2 Sport and Physical Activity Studies Centre, University of Vic-Central University of Catalonia, Barcelona, Spain
3 Sport Performance Analysis Research Group, University of Vic-Central University of Catalonia, Barcelona, Spain
4 Research Group of Clinical Anatomy, Embryology and Neuroscience, Department of Medical Sciences; and School of Health and Sport Sciences, University of Girona, Girona, Spain

Toni Caparrós
✉ National Institute of Physical Education and Sport of Catalonia, University of Barcelona, Av. de l’Estadi, 12-22, 08038, Barcelona, Spain
Email: toni.caparros@gencat.cat
Publish Date
Received: 09-06-2021
Accepted: 11-09-2021
Published (online): 01-10-2021
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ABSTRACT

Data related to 141 sessions of 10 semi-professional basketball players were analyzed during the competitive period of the 2018-2019 season using a multivariable model to determine possible associations between internal and external load variables and fatigue. Age, height, weight, sessional rate of perceived exertion (sRPE), summated-heart-rate-zones, heart rate variability, total accelerations and decelerations were the covariates, and post-session countermovement jump loss (10% or higher) the response variable. Based on the results observed, a rise in sRPE and accelerations and decelerations could be associated with increased lower-body neuromuscular fatigue. Observing neuromuscular fatigue was 1,008 times higher with each additional sRPE arbitrary unit (AU). Each additional high-intensity effort also increased the probability of significant levels of neuromuscular fatigue by 1,005 times. Fatigue arising from demanding sporting activities is acknowledged as a relevant inciting event leading to injuries. Thus, the methodology used in this study can be used then to monitor neuromuscular fatigue onset, also enhancing proper individual adaptations to training.

Key words: Monitoring, muscle fatigue, countermovement jump, performance, basketball


           Key Points
  • Several internal and external load variables show associations with an increase in local neuromuscular fatigue detected through the countermovement jump test.
  • Our main findings show promising results detecting the lower-body neuromuscular fatigue originated by specific training through and ecological, practical, and low time-consuming methodology. The proposed method can outline the players’ physiological state and inform decisions regarding the application of different training loads within a complex setting and multi-factorial process.
 
 
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