Abstract：
OBJECTIVE:The Finnmarksløpet dogsled race lasts up to 7 days. Helpers, who keep time, coach, and transport equipment, have to be alert though they have little and fragmented sleep. This study investigated disruptions of the rest-activity rhythm among helpers. METHODS:10 helpers were monitored by actigraph a week before, during, and after the race. Sleep logs, sleepiness rate, and self-reported quality of sleep were collected. RESULTS:Nonparametric circadian rhythm analysis showed significant differences between the pre- and postrace interdaily stability and amplitude of rhythm. Compared to prerace, sleepiness at bedtime was increased and number of nocturnal awakenings was reduced postrace, although the actigraphic outputs showed no improvement in sleep quality. Helpers who were engaged in the race for a longer span (5-6 days) had more difficulty recovering from the sleep loss accumulated during the race than those engaged for a shorter time (2-3 days). CONCLUSION:Poor sleep combined with prolonged and demanding mental focus for 2 days or more has a negative influence upon the rest-activity cycle, though complete restoration of the cycle occurs over 1 week or more. Being in such a condition for ≥ 5 days leads to disruptions of the circadian component of the sleep-wake cycle that hampers the sleep recovery process. Disrupted sleep and demanding mental requirements are common in long-distance sporting events as well as among shift workers. Follow-up intervention should be made in such cases to ensure the return of a healthy rest-activity rhythm and sleep quality.
journal_name
Biol Res Nursjournal_title
Biological research for nursingauthors
Calogiuri G,Weydahl Adoi
10.1177/1099800412475077subject
Has Abstractpub_date
2014-04-01 00:00:00pages
123-33issue
2eissn
1099-8004issn
1552-4175pii
1099800412475077journal_volume
16pub_type
杂志文章abstract：:The focus on a cure for childhood leukemia over the last three decades has resulted in survival rates of more than 80%. However, efforts to manage leukemia-treatment symptoms have not kept pace with new therapies. Symptom toxicity during treatment can result in complications, treatment delays, and therapy dose reducti...
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abstract：:This article explores ethical concerns and emerging dilemmas associated with the proliferation of information resulting from the extraordinary advances in molecular genetics. It provides an overview of the ethical and legal challenges associated with predictive testing for inherited disease currently being addressed i...
journal_title：Biological research for nursing
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abstract：OBJECTIVE:The sacral skin of bedridden older patients often develops a dysbiotic condition. To clarify whether the condition changes or is sustained over time, we analyzed the skin microbiome and the skin physiological functions of the sacral skin in patients who completed our 2017 study. METHODS:In 2019, we collected...
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journal_title：Biological research for nursing
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abstract：:MicroRNAs (miRs) are epigenetic regulators of messenger RNAs' (mRNA) expression of polypeptides. As such, miRs represent an intriguing mechanism by which gene-environment interactions are hypothesized to occur on the level of epigenetic control over gene expression. In addition to promising findings from in vitro stud...
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abstract：:Society has a rapidly growing accumulative sleep debt due to employment obligations and lifestyle choices that limit sleep opportunities. The degree to which poor sleep may set the stage for adverse symptom outcomes among more than 1.7 million persons who will be diagnosed with cancer is not entirely understood. Pacli...
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abstract：OBJECTIVE:To investigate associations between components of cumulative risk (CR) and physiological stress responses in African American adolescents and evaluate emotion regulation as a mediator and sex as a moderator of these associations. METHODS:Cortisol and salivary alpha amylase (sAA) were collected in adolescents...
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更新日期：2018-03-01 00:00:00
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abstract：:African American (AA) women are nearly twice as likely as non-Hispanic White (NHW) women to develop atherosclerosis associated with cardiovascular disease. Compelling evidence demonstrates that stress-related biomarkers, such as heat shock protein-70 (HSP70), are associated with increased atherosclerosis risk. Yet lit...
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更新日期：2014-07-01 00:00:00
abstract：:Shift work schedules, intensive physical exercise late in the day, psychological stress, or a busy lifestyle might induce disorders of the circadian structure, which can affect health on both the physiological and neurobehavioral levels. Rest-activity rhythm is strongly connected with an organism's circadian structure...
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更新日期：2013-01-01 00:00:00
abstract：OBJECTIVE:Although the roles of testosterone and cortisol in various health problems have been extensively investigated, little is known about their associations with health outcomes in mothers and their very-low-birthweight (VLBW) infants when maternal testosterone and cortisol are examined together during the postpar...
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abstract：:Variations in sex hormones influence bone health in men. Aging in men is associated with a decrease in testosterone (T) levels. We examined the relationship between T levels and changes in bone health status as measured by quantitative ultrasound (QUS) at the phalanges and the os calcis and by peripheral bone mineral ...
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journal_title：Biological research for nursing
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更新日期：2017-01-01 00:00:00
abstract：BACKGROUND:Incidence rates of both type 1 and type 2 diabetes mellitus (DM) are increasing in youth and may eventually contribute to premature heart disease in early adulthood. This investigation explored the influence of type of diabetes, gender, body mass index (BMI), metabolic control (HbA1c), exercise beliefs and p...
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更新日期：2012-10-01 00:00:00
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