Day Type and Start Time May Influence Sleep in Adolescent Professional Football Players
This study assessed whether scheduling (start time and day type) and workload
variables influenced sleep markers (activity monitor) in professional academy
footballers (n=11; 17.3±0.7 yrs) over a 10-week
in-season period. Separate linear mixed regressions were used to describe the
effect of start time on the previous nights sleep, and the effect of day type
(match day, match day+1) and workload on subsequent sleep. Workload
variables were modelled by day (day), 7-day (acute), and 28-day (chronic)
periods. Sleep duration following match day+1 (400 mins;
95%CI:368–432) was significantly reduced compared to all other
day types (p<0.001). Sleep onset time following match day (00:35;
CI:00:04–01:12) and wake time on match day+1 (09:00;
CI:08:37–09:23) were also significantly later compared to all other day
types (p<0.001). Sleep duration (19.1 mins;
CI:9.4–28.79), wake time (18 mins; CI:9.3–26.6), and
time in bed (16.8 mins; CI:2.0–31.5) were significantly
increased per hour delay in start time. When no activity was scheduled, sleep
duration (37 mins; CI:18.1–55.9), sleep onset
(42.1 mins; CI:28.8–56.2), and wake times (86 mins;
CI:72–100) were significantly extended, relative to a 09:00 start time.
Day, acute, and chronic workloads were associated with ...
Source: International Journal of Sports Medicine - Category: Sports Medicine Authors: Edinborough, Luke Bruce-low, Stewart Hill, Jessica Woodhouse, Jonny Jarvis, Mark Pedlar, Charles Tags: Physiology & Biochemistry Source Type: research
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