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Temporal associations between circadian sleep and activity patterns in Mexican American children

S M Martinez1, J M Tschann2, C E McCulloch3

  • 1University of California, Nutrition Policy Institute, 1111 Franklin St, 10th Floor, Oakland, CA 94607, USA.

Sleep Health
|April 1, 2019
PubMed

Insights

Longer sleep in Mexican American children reduces sedentary time and light physical activity. Increased light physical activity, however, decreases sleep duration, highlighting a complex interplay between sleep and activity behaviors.

Area of Science:

  • Pediatric sleep science
  • Behavioral science
  • Public health

Background:

  • Circadian rhythms and daily behaviors are crucial for child development.
  • Understanding the interplay between sleep duration and physical activity is vital for promoting healthy lifestyles in children.
  • Previous research has indicated associations, but the dynamic, day-to-day relationships require further investigation.

Purpose of the Study:

  • To examine the relationship between sleep duration and activity behaviors (sedentary time [SED], light-intensity physical activity [LPA], and moderate- to vigorous-intensity physical activity [MVPA]) over three consecutive days in Mexican American children.
  • To investigate the cross-lagged effects between sleep and activity behaviors.

Main Methods:

  • A sample of 308 Mexican American children (aged 8-10 years) participated in the study.
  • Sleep duration, SED, LPA, and MVPA were measured using hip-worn accelerometers over three consecutive days (Wednesday night to Saturday night).
  • A cross-lagged panel model was employed to analyze the temporal relationships between sleep and activity behaviors, controlling for covariates like age, sex, BMI, and income.

Main Results:

  • Children averaged 9.6 hours of sleep, 483 minutes of SED, 288 minutes of LPA, and 63 minutes of MVPA per day.
  • An additional hour of sleep was associated with a decrease of 40 minutes in SED, 22 minutes in LPA, and 4 minutes in MVPA the following day.
  • Conversely, one hour of LPA was associated with a 15-minute decrease in sleep duration.

Conclusions:

  • Increased sleep duration in Mexican American children is linked to reduced sedentary time and light physical activity.
  • Light-intensity physical activity has a negative predictive effect on subsequent sleep duration.
  • Interventions encouraging longer sleep may be beneficial for reducing sedentary behavior and light physical activity, while also mitigating the negative impact of LPA on sleep.
Abstract

Keywords:
Lagged panel modelLatino childrenPhysical activitySedentary behaviorSleep durationTemporal

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