Banca de QUALIFICAÇÃO: AYRTON BRUNO DE MORAIS FERREIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : AYRTON BRUNO DE MORAIS FERREIRA
DATE: 25/09/2020
TIME: 09:00
LOCAL: Plataforma Meet
TITLE:

EFFECTS OF TRAINING INTENSIFICATION ON SLEEP BEHAVIOR, HUMOR STATE, SALIVARY CORTISOL AND PERCEIVED STRESS IN YOUNG SOCCER PLAYERS.

KEY WORDS:

Monitoring; Physical training; Actigraphy; Soccer.

PAGES: 55
BIG AREA: Ciências da Saúde
AREA: Educação Física
SUMMARY:

INTRODUCTION: Sleep is identified by elite athletes, coaches and sports health professionals as a relevant aspect for recovery and of decisive importance with regard to competitive performance. Thus, it is important to understand how training and competition demands affect sleep. OBJECTIVE: To analyze the effects of a week of training intensification on sleep behavior, mood, perceived stress and salivary cortisol in young soccer players. METHODS: 13 young male soccer athletes (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 assessed during a three-week training period (baseline, intensification and recovery). The external training load (CET) was verified by the Player-Load method, while the internal training load (CIT) was determined by the Subjective Rating of Perceived Exertion (RPE). Wrist actigraphy was used to monitor sleep behavior. The mood state was assessed by the Brunel Mood Scale (BRUMS) and the stress perceived by the Athletes' Daily Life Demand Analysis questionnaire (DALDA). The recovery status was measured using the Perceived Recovery Status scale (PRS). In addition, saliva samples were collected at rest to analyze variations in salivary cortisol levels. The repeated measures annova was used to verify the effect of time for Player-Load, CIT, total sleep time, sleep efficiency, sources of stress, symptoms of stress, perceived recovery and salivary cortisol. Scheffé's post-hoc was used to verify specific differences. For the data that did not meet the assumption of normality and the normality of residues, the Friedman test was used. Pearson and Spearman correlations were used to verify the association between training load and sleep-related variables. RESULTS: Week 2 was characterized as an intensification week, with a significant increase in CET (p <0.001) and CIT (p <0.001) when compared to weeks 1 and 3. There was no significant difference for sleep efficiency throughout the training cycles (p = 0.242). However, the total sleep time was significantly higher in the week of intensification when compared to the week of baseline (p = 0.006), but without statistical difference for the week of recovery (p = 0.241). There was a statistical difference in sleep latency (p = 0.034), however, Bonferroni's post hoc did not indicate when this difference occurred. In addition, there was no time effect for the BRUMS scale subcomponents: 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 effect of time for PRS (p = 0.741), sources of stress (p = 0.730), symptoms of stress (p = 0.986) and salivary cortisol (p = 0.859). Finally, there was a moderate correlation between Player-Load and total sleep time (r = 0.320; p = 0.047), CIT and total sleep time (r = 0.406; p = 0.01), CIT and sleep efficiency (r = 0.357; p = 0.026). Furthermore, there was a positive and high correlation between CET and CIT (r = 0.558; p <0.001). CONCLUSION: A week of training intensification implied an increase in the amount of sleep of young soccer athletes, however, it does not influence the variables of stress, mood and recovery status of young athletes.

 

BANKING MEMBERS:
Interno - 1793257 - ARNALDO LUIS MORTATTI
Interno - 1989744 - HASSAN MOHAMED ELSANGEDY
Externo ao Programa - 1216466 - JOHN FONTENELE ARAUJO
Externo à Instituição - ALEXANDRE MOREIRA - USP
Externo à Instituição - LEONARDO DE SOUSA FORTES - UFPE