Audio Abstracts are changing the way scientific research is being communicated. Watch Ian’ video below where he delves into his article ‘The Effects of the the Removal of Electronic Devices for 48 Hours on Sleep in Elite Judo Athletes’, highlighting the purpose of the study, its limitations and the practical applications. If you want to read the abstract or access the full paper (where available), all links are below.
The full paper can be found on Researchgate
Ian can be found on Twitter @sleep4perform
Abstract: This study examined the effects of the removal of electronic devices (i.e., smartphones, etc.) for 48 hours on sleep quality and next-day athletic and cognitive performance in elite Judo athletes. Participants: Over 6 days and nights, 23 elite Australian Judo athletes were monitored while attending a camp at the Australian Institute of Sport (AIS). In 14 athletes all electronic devices were removed on days 3 & 4 (i.e. for 48 hours: the ‘device-restricted group’) while 9 were permitted to use their devices throughout the camp (the ‘control group’). Methods: Athletes wore an activity monitor (Readiband) continuously to provide measures of sleep quantity and quality. Other self-reported (diary) measures included time in bed, electronic device use, and rate of perceived exertion during training periods. Cognitive performance (Cogstate) and physical performance (single leg-triple hop test) were also measured. Results: When considering Night 2 as a ‘baseline’ for each group, removal of electronic devices on Nights 3 & 4 (device-restricted group) did not significantly change any sleep-related measure between the groups. When comparing actigraphy-based measures of sleep to subjective measures, all athletes significantly overestimated sleep duration by 58±85 minutes (p=0.001) per night and underestimated time of sleep onset by 37±72 minutes (p=0.001) per night. No differences in physical or cognitive function were observed between the groups. Conclusion: This study has shown that the removal of electronic devices for a period of 48 hours two nights during a judo camp does not affect sleep quality or quantity or influence athletic or cognitive performance.