Results 21 to 30 of about 93,323 (251)

Cosinor-rhythmometry for 24-h urinary sodium, potassium, creatinine excretion in the Chinese adult population

open access: yesChinese Medical Journal, 2021
. Background:. The low accuracy of equations predicting 24-h urinary sodium excretion using a single spot urine sample contributed to the misclassification of individual sodium intake levels.
Ya-Guang Peng   +7 more
doaj   +1 more source

Body-temperature circadian rhythm in 67 patients after heart valve replacement surgery secondary to valvular heart disease

open access: yesInternational Journal of Nursing Sciences, 2014
Purpose: Patient body temperature was monitored after cardiac valve replacement, in order to explore the characteristics of body-temperature circadian rhythm and the factors influencing that rhythm.
Xiao-Ying Jiang, Cong Wang
doaj   +1 more source

Lighting as a Circadian Rhythm-Entraining and Alertness-Enhancing Stimulus in the Submarine Environment [PDF]

open access: yes, 2006
The human brain can only accommodate a circadian rhythm that closely follows 24 hours. Thus, for a work schedule to meet the brain’s hard-wired requirement, it must employ a 24 hour-based program.
Bullough, J. D.   +4 more
core   +1 more source

Rheostatic Balance of Circadian Rhythm and Autophagy in Metabolism and Disease

open access: yesFrontiers in Cell and Developmental Biology, 2020
Circadian rhythms are physical, behavioral and environmental cycles that respond primarily to light and dark, with a period of time of approximately 24 h.
Xiang Wang   +8 more
doaj   +1 more source

Voluntary exercise can strengthen the circadian system in aged mice [PDF]

open access: yes, 2013
Consistent daily rhythms are important to healthy aging according to studies linking disrupted circadian rhythms with negative health impacts. We studied the effects of age and exercise on baseline circadian rhythms and on the circadian system's ability ...
A Davidson   +74 more
core   +2 more sources

Light masking of the circatidal activity rhythm in the mangrove cricket Apteronemobius asahinai [PDF]

open access: yes, 2013
Apteronemobius asahinai shows two rhythms in its locomotor activity. One is the circatidal rhythm, which produces active and inactive phases, and the other is the circadian rhythm, which suppresses the intensity of the activity of the circatidal active ...
Goto, Shin G.   +3 more
core   +1 more source

Reduced expression of the PER2 protein contributes to β1-AA-induced cardiac autophagy rhythm disorders

open access: yesActa Biochimica et Biophysica Sinica
Heart failure may be linked to fluctuations in the rhythm of autophagy in cardiomyocytes throughout the day. Circadian rhythms depend on the regulation of core biological clock proteins, with PER2 playing a crucial role.
Li Pengjia   +8 more
doaj   +1 more source

Circadian rhythms and cancers: the intrinsic links and therapeutic potentials

open access: yesJournal of Hematology & Oncology, 2022
The circadian rhythm is an evolutionarily conserved time-keeping system that comprises a wide variety of processes including sleep–wake cycles, eating–fasting cycles, and activity–rest cycles, coordinating the behavior and physiology of all organs for ...
Li Zhou   +5 more
doaj   +1 more source

Smartphone Sensor Data for Identifying and Monitoring Symptoms of Mood Disorders: A Longitudinal Observational Study

open access: yesJMIR Mental Health, 2022
BackgroundMood disorders are burdensome illnesses that often go undetected and untreated. Sensor technologies within smartphones may provide an opportunity for identifying the early changes in circadian rhythm and social support ...
Taylor A Braund   +7 more
doaj   +1 more source

Non-dipping nocturnal blood pressure and psychosis parameters in Parkinson disease [PDF]

open access: yes, 2015
Conclusion: These results suggest that, among PD patients, a non-dipping circadian rhythm is associated with more severe symptoms of psychosis than is a dipping circadian rhythm.
Haensch, CA   +5 more
core   +1 more source

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