Longer Sleep Durations Are Positively Associated With Finishing Place During a National Multiday Netball Competition

Juliff, Laura E.; Halson, Shona L.; Hébert, Jeffrey J.; Forsyth, Peta; Peiffer, Jeremiah J.

doi:10.1519/jsc.0000000000001793

Cited by 41 publications

(36 citation statements)

References 33 publications

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“…However, it is clear, from each study that exercise does have a major impact upon melatonin levels, which in turn will affect human biorhythms and physiological processes related to sleep regulation. In regards to objective sleep metrics, the results of the current study support previous research that has assessed sleep following evening competition (Shearer et al, 2015, Juliff et al, 2018. Although not statistically significant, a small difference was observed following training compared to control for TST (-45 minutes), which was similar to the TST reductions from an evening game observed by Juliff and colleagues (2018) in 42 netball athletes.…”

Section: Discussionsupporting

confidence: 87%

“…Indeed, it is somewhat surprising that the sleep duration in both conditions in the current study (8:01 and 8:46 for the training session and CONTROL) is higher than that described in previous research in elite netballers , Juliff et al 2018 reported sleep durations of 6:46 the night of a netball match and 7:23 the next night following a match. Similarly, Juliff et al (2018) reported total sleep durations of ~7:20 in the week leading up to a netball tournament. While not statistically significant, a small trend was also observed for delayed SL in the current study following training (38.5 minutes) compared to control (27.5 minutes).…”

Section: Discussioncontrasting

confidence: 78%

“…It is positive to observe that the small reduction in TST (8:01 h:min) observed following the training session compared to CONTROL remained within the recommended 7 -9 hours of sleep duration for the general population (Hirshkowitz et al, 2015). Indeed, it is somewhat surprising that the sleep duration in both conditions in the current study (8:01 and 8:46 for the training session and CONTROL) is higher than that described in previous research in elite netballers , Juliff et al 2018 reported sleep durations of 6:46 the night of a netball match and 7:23 the next night following a match. Similarly, Juliff et al (2018) reported total sleep durations of ~7:20 in the week leading up to a netball tournament.…”

Section: Discussioncontrasting

confidence: 46%

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Melatonin and sleep responses following exercise in elite female athletes

2019

JSES

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To determine the melatonin concentrations and subsequent sleep indices of elite netball athletes following a training day when compared to a control day. Ten elite female netball athletes (mean ± SD; age = 23 ± 6 yrs) provided saliva samples PRE (17:15h) and POST (22:00h) a training session, and a day with no training (CONTROL). Sleep monitoring was performed using wrist actigraphy to assess total time in bed (TTB), total sleep time (TST), sleep efficiency (SE) and sleep latency (SL). Melatonin levels were significantly lower (p < 0.05), both PRE and POST the training condition (6.2 and 17.6 pg/mL, respectively) when compared to the CONTROL (14.8 and 24.3 pg/mL, respectively). There were no significant differences observed between conditions for any of the sleep variables. However, a small reduction in TST could be observed following the training session condition compared to the CONTROL condition. The scheduling of netball training in the evening is shown to suppress salivary melatonin levels. This may have an influence on subsequent sleep following night-time exercise.

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Section: Discussionsupporting

confidence: 87%

Section: Discussioncontrasting

confidence: 78%

Section: Discussioncontrasting

confidence: 46%

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Melatonin and sleep responses following exercise in elite female athletes

2019

JSES

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“…Differences in bedtime and wake time during pre-season may also be observed when compared to the competitive season, both for players and staff [ 80 ]. Multi-day competitions may additionally exert chronodisruptive effects on sleep, especially when late evening and/or early morning competitions are scheduled [ 71 , 81 ]. Depending on the seasonal phase, different levels of perceived stress may account for these results.…”

Section: Reviewmentioning

confidence: 99%

The Variability of Sleep Among Elite Athletes

et al. 2018

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Practicing sport at the highest level is typically accompanied by several stressors and restrictions on personal life. Elite athletes’ lifestyle delivers a significant challenge to sleep, due to both the physiological and psychological demands, and the training and competition schedules. Inter-individual variability of sleep patterns (e.g., sleep requirements, chronotype) may have important implications not only for recovery and training schedules but also for the choice of measures to possibly improve sleep. This article provides a review of the current available literature regarding the variability of sleep among elite athletes and factors possibly responsible for this phenomenon. We also provide methodological approaches to better address the inter-individual variability of sleep in future studies with elite athletes. There is currently little scientific evidence supporting a specific influence of one particular type of sport on sleep; sleep disorders may be, however, more common in strength/power and contact sports. Sleep behavior may notably vary depending on the athlete’s typical daily schedule. The specificity of training and competition schedules possibly accounts for the single most influential factor leading to inconsistency in sleep among elite athletes (e.g., “social jet lag”). Additionally, athletes are affected by extensive exposure to electric light and evening use of electronic media devices. Therefore, the influence of ordinary sleep, poor sleep, and extended sleep as important additional contributors to training load should be studied. Future experimental studies on sleep and elite sport performance should systematically report the seasonal phase. Boarding conditions may provide a good option to standardize as many variables as possible without the inconvenience of laboratory. The use of interdisciplinary mixed-method approaches should be encouraged in future studies on sleep and elite sport. Finally, high inter- and intra-individual variability in the athletes’ sleep characteristics suggests a need for providing individual responses in addition to group means.

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“…Extending sleep may be beneficial for sports-specific skill execution 6. Nightly sleep duration has been positively correlated with team netball performance7 and associated with injury risk in adolescent athletes 8…”

Section: Introductionmentioning

confidence: 99%