Related Experiment Video
Updated: Nov 4, 2025
06:39
Through-the-Wall Blood Sampling Method to Minimize Sleep Disruption in Clinical Settings
Published on: June 13, 2025
209
[Sleep-wake cycle regularity and cardiometabolic indicators]
M V Bochkarev1, L S Korostovtseva1, A B Tataraidze2
1Almazov National Medical Research Center, St. Petersburg, Russia.
Summary
Sleep-wake rhythm significantly impacts cardiometabolic health. Stable sleep patterns and higher daytime activity are linked to better cardiovascular health indicators.
Area of Science:
- Chronobiology
- Cardiovascular Health
- Metabolic Health
Background:
- Sleep-wake rhythm disorders are increasingly recognized as potential contributors to cardiometabolic diseases.
- Understanding the specific associations between sleep patterns and cardiometabolic parameters is crucial for public health.
Purpose of the Study:
- To investigate the relationship between sleep-wake rhythm characteristics and various cardiometabolic health indicators.
- To determine if sleep quality, stability, and activity patterns influence metabolic and cardiovascular markers.
Main Methods:
- 103 adults (25-64 years) participated in a 7-day actigraphy study using Actigraph Actilife GT3X+.
- Actigraphy data (sleep, physical activity) were analyzed using nonparametric indicators (e.g., stability, L5, M10).
- Anthropometric, blood pressure, and laboratory parameters (e.g., glucose, lipids, CRP) were assessed.
Main Results:
- Higher night activity correlated with improved sleep effectiveness and wake after sleep onset.
- Stable sleep patterns were associated with favorable outcomes: more steps, lower weight, reduced waist circumference, and lower diastolic blood pressure, creatinine, and insulin.
- Increased sleep fragmentation linked to elevated C-reactive protein (CRP) and sedentary time.
- Greater activity contrast (day vs. night) correlated with lower waist circumference, hip circumference, body mass index (BMI), CRP, and insulin.
Conclusions:
- Sleep-wake rhythm and quality are significant determinants of cardiometabolic health.
- Stable sleep patterns, characterized by higher daytime activity and lower nighttime activity, are associated with a healthier cardiovascular system.
Related Concept Videos
01:24Sleep-Wake Cycles
2.0K
Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
2.0K
01:11Understanding Sleep
938
Sleep, an essential biological state, involves significant reductions in physical activity, sensory awareness, and interaction with the environment. This complex physiological process is primarily regulated by specific brain regions, notably the hypothalamus and pons, which govern the sleep-wake cycle or circadian rhythm.
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
938
01:13Insufficient Sleep and Sleep Deprivation
420
Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
Sleep deprivation is a more severe form of sleep loss...
420
02:19Circadian Rhythms and Gene Regulation
4.3K
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
4.3K
01:15Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response
180
Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
180
01:25Correlation between ECG and Cardiac Cycle
10.0K
The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
10.0K