@misc{10481/100120,
year = {2023},
month = {3},
url = {https://hdl.handle.net/10481/100120},
abstract = {Purpose: This study aimed to investigate the effects of a 5-week training cessation on the cardiac autonomic response after a 50-m swimming time-trial test. Methods: Twenty trained and highly trained adolescent swimmers (17.1 [2.7] y) performed a 50-m front-crawl all-out test before (visit 1) and after a 5-week training cessation (visit 2). After the warm-up, heart-rate variability (HRV) was recorded in a seated position using a Polar RS800CX heart-rate monitor during the 10 minutes before (preexercise) and immediately after the 50-m front-crawl all-out test (postexercise). Two-way analysis of variance (time × visit) and analysis of covariance were conducted to compute the effect of the 50-m all-out test on vagal-related HRV parameters (mean R-R, standard deviation ofR-R intervals [SDNN], square root of the mean squared differences between successive R-R intervals [RMSSD], the percentage number of pairs of adjacent normal R-R intervals differing by more than 50 milliseconds in the entire recording [pNN50], and power in the high frequency [HF]) with Bonferroni post hoc test. Results: All the HRV parameters had a time main effect (P < .05), showing a reduction after the 50m in both visits (P < .05). All the variables exhibited a visit main effect (P < .05); the preexercise and postexercise mean R-R, natural logarithmSDNN, natural logarithm RMSSD, and natural logarithm HF values declined after the training cessation (P < .05). Natural logarithm pNN50 preexercise values were reduced in visit 2 compared with visit 1 (P < .05). Only mean R-R was further reduced in response to the test in visit 2 compared with visit 1 (P < .05). Conclusions: After 5 weeks of training cessation, all the preexercise and postexercise vagal-related HRV parameters evidenced a reduction, suggesting an impairment in swimmers’ physical status. Coaches should be cautious with training loads at the start of the season.},
organization = {This study was supported by the Ministry of Science, Innovation and Universities (Spanish Agency of Research) and the European Regional Development Fund; PGC2018-102116-B-I00 “SWIM II: Specific Water Innovative Measurements: Applied to the performance improvement” and the Spanish Ministry ofEducation, Culture and Sport: FPU17/02761 grant. This article is a part of an international thesis belonging to the PhD Program in Biomedicine (B11.56.1) from the University of Granada, Granada (Spain). J.M.A.A. is supported by grant FJC2020-044453-I funded by MCIN/AEI/ 10.13039/501100011033 and by “European Union NextGenerationEU/PRTR.”},
keywords = {anaerobic exercise},
keywords = {autonomic nervous system},
keywords = {heart-rate variability},
keywords = {parasympathetic activity},
keywords = {swimming performance},
title = {Detraining effect on cardiac autonomic response to an allout sprint exercise in trained adolescent swimmers},
doi = {10.1123/ijspp.2022-0389},
author = {Ruiz Navarro, Jesús Juan and Plaza Florido, Abel Adrián and Alcántara Alcántara, Juan Manuel and Gay Párraga, Ana and Arellano Colomina, Raúl},
}