Related Experiment Video

Updated: Feb 2, 2026

Author Spotlight: Streamlining Visual Dynamics to Simplify Molecular Dynamics Simulations Using Gromacs
05:00

Author Spotlight: Streamlining Visual Dynamics to Simplify Molecular Dynamics Simulations Using Gromacs

Published on: August 9, 2024

1.9K

Featured Article: Bidirectional Effects of Sleep and Sedentary Behavior Among Toddlers: A Dynamic Multilevel Modeling

Bridget Armstrong1, Lauren B Covington2, George J Unick3

  • 1Department of Pediatrics, University of Maryland School of Medicine.

Journal of Pediatric Psychology
|November 27, 2018
PubMed

Insights

Adequate nighttime sleep is crucial for toddlers, as less sleep predicts more sedentary activity the next day. This relationship is stronger for most children, emphasizing the link between sleep and activity levels.

Area of Science:

  • Child Health
  • Behavioral Science
  • Sleep Science

Background:

  • Toddlers exhibit significant sedentary behavior and sleep patterns.
  • Understanding the interplay between sleep and activity in early childhood is vital for health interventions.

Purpose of the Study:

  • To investigate the bidirectional relationship between nighttime sleep and sedentary activity in toddlers.
  • To determine if sleep influences sedentary behavior or vice versa.

Main Methods:

  • Utilized accelerometer data from 195 toddlers (mean age 27 months) over 7 days.
  • Defined nighttime sleep and sedentary behavior using established metrics.
  • Employed dynamic structural equation modeling (DSEM) to analyze within- and between-person effects.

Main Results:

  • Toddlers averaged ~8 hours of sleep and ~3 hours of sedentary activity nightly.
  • Decreased sleep predicted increased next-day sedentary activity.
  • Sedentary activity predicted subsequent nighttime sleep, but sleep's effect on activity was stronger for 89% of toddlers.

Conclusions:

  • Nighttime sleep is a more significant predictor of subsequent sedentary behavior in toddlers than the reverse.
  • Findings underscore the importance of sleep for modulating activity levels in early childhood.
  • Demonstrates the utility of DSEM for examining Granger-causal relationships in developmental research.
Abstract

Keywords:
research design and methodssleepstatistical applications

More Related Videos

Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice10:56

Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice

Published on: August 2, 2017

10.5K
A System for Tracking the Dynamics of Social Preference Behavior in Small Rodents08:38

A System for Tracking the Dynamics of Social Preference Behavior in Small Rodents

Published on: November 21, 2019

8.2K

Related Concept Videos

REM Sleep Behavior Disorder01:15

REM Sleep Behavior Disorder

REM Sleep Behavior Disorder (RBD) is a sleep disorder characterized by the absence of muscle paralysis that normally occurs during the REM phase of sleep. This absence allows individuals to physically act out their dreams, which are often vivid and disturbing. Common behaviors exhibited during episodes include kicking, punching, and yelling. These actions can be dangerous, potentially leading to injuries for the person with RBD or their bed partner.
RBD is significantly associated with...
1.7K
Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

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...
938
Stages of Sleep01:22

Stages of Sleep

Sleep progresses through distinct stages, each characterized by specific brain wave patterns and physiological responses ranging from wakefulness to stages of non-rapid eye movement, known as non-REM, to rapid eye movement, referred to as REM. Understanding these stages helps in recognizing how sleep supports various bodily and cognitive functions.
Before sleep begins, in wakefulness, the brain exhibits primarily beta waves, which are high in frequency and low in amplitude, indicating alertness...
1.4K
Understanding Sleep01:11

Understanding Sleep

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...
1.6K
Sleep Apnea01:21

Sleep Apnea

Sleep apnea is a condition where breathing stops intermittently during sleep, often leading to significant health issues. Each episode can last from 10 to 20 seconds or more and is frequently accompanied by a brief arousal from sleep. This disturbance, largely unnoticed by the individual, can lead to severe daytime fatigue. Commonly, individuals seek help after being informed by their partners about loud snoring and noticeable breathing pauses during sleep.
The condition is more prevalent among...
559
What is Behavior?00:54

What is Behavior?

Behaviors are actions that an organism engages in—they can be related to finding food, reproducing, defending against threats, and many other possible actions. Behaviors include activities related to the environment around the animal—such as migration—as well as social interactions within a species or population. Many behaviors involve motor output—that is, muscle movements—while others involve less visible actions, such as learning.
10.3K