Effect of a Night Game on Actigraphy Based Sleep Quality and Perceived Recovery in Top Level Volleyball Athletes.
PURPOSE To evaluate actigraphy based sleep quality and perceived recovery before and after a night game in top level volleyball athletes. METHODS Data on sleep parameters were collected by actigraphy for 3 consecutive nights with 24 elite athletes (12 male and 12 female; mean age [SD] 26.0 [3.4] y, age range 20 33 y) during the competitive season 2016 17. Data from 1 night before and 2 nights after an official night match were studied, and athletes' subjective perception of recovery was evaluated by the Total Quality Recovery scale. The following actigraphic parameters were studied: time in bed, sleep latency, sleep efficiency, wake after sleep onset, total sleep time, immobility time, moving time, and fragmentation index. RESULTS The analysis highlighted significant differences for all sleep variables. Total sleep time was lower the first night after the match compared with prematch sleep (P .02) and the second night (P .0009) after night competition (P .0001, F2,23 22.93, ep2 .66 Similarly, sleep efficiency was lower immediately after the night competition compared with both prematch values (P .03) and the second night (P .0003) after competition (P .0005, F2,23 8.93, ep2 .44 The same differences were observed in the perceived recovery values (P .001, F2,23 13.37, ep2 .54 CONCLUSIONS Coaches and medical staff should use these findings to develop a greater knowledge of how sleep differs during different phases of competition and to implement behavioral and sleep hygiene strategies in top level athletes.
International journal of sports physiology and performance