Banca de DEFESA: AYRTON BRUNO DE MORAIS FERREIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : AYRTON BRUNO DE MORAIS FERREIRA
DATE: 05/08/2021
TIME: 09:00
LOCAL: Plataforma Meet
TITLE:

THE INFLUENCE OF DIFFERENT MAGNITUDES OF TRAINING LOAD IN THE SLEEP PATTERN AND PSYCHOPHYSIOLOGICAL RESPONSES IN YOUNG SOCCER PLAYERS

KEY WORDS:

Monitoring; Physical training; Actigraphy; Soccer.

PAGES: 80
BIG AREA: Ciências da Saúde
AREA: Educação Física
SUMMARY:

INTRODUCTION: Young athletes, during the pre-season and season phases, are exposed to successive periods of changes in the magnitudes of the training loads, which can directly affect the quantity and quality of sleep and, consequently, interfere in the recovery process. OBJECTIVE: To analyze the influence of different training load magnitudes on sleep parameters, perceived recovery, mood states, stress tolerance and salivary cortisol in young soccer players for three weeks with different workload magnitudes. METHODS: 13 young male soccer players (age: 15.93 ± 0.59 years; body mass: 68.70 ± 6.12 kg; height: 1.75 ± 0.07 m; BMI: 22.30 ± 0.97) were evaluated during a pre-competitive mesocycle, consisting of 3 weeks of training with different workload magnitudes. The external training load (ETL) was verified by the PlayerLoad method, while the internal training load (ITL) was determined by the session-rating of perceived exertion method (session-RPE). The sleep was monitored using a wrist-actigraphy monitor. Sleep variables, including total time in bed (TTB), total sleep time (TST), sleep latency (SL), wake after sleep onset (WASO) and sleep efficiency (SE) were assessed in all nights of post-workout sleep. The recovery status was measured using the Perceived Recovery Status (PRS) scale. Mood status was assessed by the Brunel Mood Scale (BRUMS) and stress tolerance by the Daily Analysis of Life Demands in Athletes questionnaire (DALDA). Saliva samples were collected at rest to analyze variations in salivary cortisol levels. Repeated measures ANOVA was used to verify the effect of time. The Friedman test was used for data that did not meet the assumptions of normality. Bonferroni's post-hoc was used to check for spot differences and the square eta (η2) was used as the effect size. Pearson and Spearman correlations were used to verify associations between training loads and sleep-related variables. RESULTS: Week 2 was the one with the highest workload, showing a significant increase in ETL (p < 0.001) and ITL (p < 0.001) when compared to weeks 1 and 3. In addition, there was a significant improvement in sleep parameters during the week with the highest training load (TTB: +35 min, p = 0.044; TST: +46 min, p = 0.003; SL: -5 min, p = 0.001; SE: + 3%, p = 0.019). However, there was no time effect for PRS (p = 0.741) and for the subcomponents of the BRUMS scale: tension (p = 0.378), depression (p = 0.311), anger (p = 0.148), vigor (p = 0.178), fatigue (p = 0.063) and confusion (p = 0.630). Likewise, there was no time effect for stress sources (p = 0.730), stress symptoms (p = 0.986) and salivary cortisol (p = 0.859). Moreover, there was a very strong correlation between ETL and ITL (r = 0.773; p <0.001), moderate correlation between ETL and TST (r = 0.340; p = 0.037), ITL and TST (r = 0.458; p = 0.003), ITL and SE (r = 0.359; p = 0.025). CONCLUSION: During an intensification microcycle there is an increase in TTB, TST, SE and reduces SL, without affecting bedtime and without interfering with the perceived recovery, mood states, stress tolerance and salivary cortisol levels.

BANKING MEMBERS:
Presidente - 1793257 - ARNALDO LUIS MORTATTI
Interno - 2682821 - EDUARDO CALDAS COSTA
Externo ao Programa - 1216466 - JOHN FONTENELE ARAUJO
Externo ao Programa - 3138718 - RICARDO SANTOS OLIVEIRA
Externo à Instituição - ALEXANDRE MOREIRA - USP