Differentiating acute fatigue and overreaching during intensified training using a recursive least squares algorithm combined with the variable dose–response model

Purpose This study aimed to investigate whether the variable dose–response model, with estimates free to vary over time, can account for overreaching during intensified training in swimmers. Methods A time-varying model using a recursive least squares algorithm was applied to data from eight swimmer...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:European journal of applied physiology Ročník 125; číslo 5; s. 1437 - 1448
Hlavní autoři: Busso, Thierry, Chalencon, Sébastien
Médium: Journal Article
Jazyk:angličtina
Vydáno: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2025
Springer Nature B.V
Témata:
Adolescent
Algorithms
Athletic Performance - physiology
Biomedical and Life Sciences
Biomedicine
Estimates
Fatigue
Fatigue - diagnosis
Fatigue - physiopathology
Female
Human Physiology
Humans
Least-Squares Analysis
Male
Models, Biological
Muscle Fatigue - physiology
Occupational Medicine/Industrial Medicine
Original Article
Physical Conditioning, Human - adverse effects
Physical Conditioning, Human - methods
Physiology
Sports Medicine
Swimming
Swimming - physiology
Young Adult
Fatigue
Swimming
Sports performance
Mathematical model
Physiological adaptation
ISSN:1439-6319, 1439-6327, 1439-6327
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:Purpose This study aimed to investigate whether the variable dose–response model, with estimates free to vary over time, can account for overreaching during intensified training in swimmers. Methods A time-varying model using a recursive least squares algorithm was applied to data from eight swimmers collected over 61 weeks, comprising five training cycles. Each data set included daily training load calculated from pool kilometers and dry land training equivalents, and performance measured twice weekly from 50 m trials. Weekly changes in model parameters were used to calculate the model impulse response that is defined as the time course of performance after a single training session. Results Functional overreaching was evidenced by a significant decline in performance within four cycles of increased training, followed by a peak in performance after two or three weeks of reduced training. Model estimates from the time-varying model provided markers to distinguish overreaching from acute fatigue during intensified training. When an increase in training led to a decrease in performance, the characteristics of the modelled impulse responses showed a significant increase in the acute negative effect and a decrease in the delayed positive effect of a single workout. Conclusions Weekly variations in estimates from a time-varying model could be useful in diagnosing overreaching from changes in the acute negative effect and delayed positive effect of training. This information provided by the model at a particular point in the training process could help practitioners to re-adjust subsequent training. Graphical Abstract
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:1439-6319
1439-6327
1439-6327
DOI:10.1007/s00421-024-05692-z