TY  - JOUR
PY  - 2019//
TI  - Poor sleep quality's association with soccer injuries: preliminary data
JO  - International journal of sports physiology and performance
A1  - Silva, Andressa
A1  - Narciso, Fernanda V.
A1  - Soalheiro, Igor
A1  - Viegas, Fernanda
A1  - Freitas, Luísa S. N.
A1  - Lima, Adriano
A1  - Leite, Bruno A.
A1  - Aleixo, Haroldo C.
A1  - Duffield, Rob
A1  - de Mello, Marco T.
SP  - ePub
EP  - ePub
VL  - ePub
IS  - ePub
N2  - PURPOSE: To investigate the relationship between sleep quality and quantity and injuries in elite soccer players and to compare sleep-wake variables and injury characteristics. <br><br>METHODS: The current investigation was a prospective cohort study of 23 elite male soccer players competing for 2 teams over 6 mo in the highest-level Brazilian competition. The players' sleep behavior was monitored for 10 d in the preseason using self-reporting sleep diaries and wrist activity monitors to determine sleep duration and quality. Furthermore, injuries were recorded by the respective club's medical teams into a specific database. Details of injuries recorded included the type, location, and severity of each injury. The results were expressed as descriptive statistics, and the significance level was set at 5%. The Mann-Whitney U test was performed to compare the sleep variables between groups. Spearman correlation coefficient and linear-regression analysis were used. <br><br>RESULTS: The results indicated a moderate negative correlation between sleep efficiency and particular injury characteristics, including absence time, injury severity, and amount of injuries. The linear-regression analysis indicated that 44% of the total variance in the number of injuries can be explained by sleep efficiency, 24% of the total variance in the absence time after injury (days) can be explained by sleep efficiency, and 47% of the total variance in the injury severity can be explained by sleep efficiency. <br><br>CONCLUSIONS: Soccer players who exhibit lower sleep quality or nonrestorative sleep show associations with increased number and severity of musculoskeletal injuries.<p />  <p>Language: en</p>
LA  - en
SN  - 1555-0265
UR  - http://dx.doi.org/10.1123/ijspp.2019-0185
ID  - ref1
ER  -