Association between sitting time and obesity: A population-based study in Peru.

Area of Science:

• Public Health
• Epidemiology
• Anthropometry

Background:

• Sedentary behavior, particularly prolonged sitting time, is a growing public health concern.
• Obesity is a complex health issue with significant implications for cardiovascular health and metabolic disorders.
• Understanding the relationship between sitting time and obesity in diverse populations is crucial for targeted interventions.

Purpose of the Study:

• To investigate the association between daily sitting time and obesity in the adult Peruvian population.
• To utilize three distinct anthropometric measurements to define and assess obesity.
• To provide evidence for public health strategies aimed at mitigating sedentary behavior.

Main Methods:

• Secondary analysis of data from the National Household Survey (ENAHO) in Peru.
• Inclusion of adults aged 18 years and older, sampled using a multistage random technique.
• Obesity defined by Body Mass Index (BMI), Waist Circumference (WC), and Waist-to-Height Ratio (WHR); sitting time categorized into <4, 4 to <8, and 8+ hours/day.
• Poisson regression models were employed to estimate prevalence ratios (PRs) and 95% confidence intervals (CIs).

Main Results:

• Analysis included 8,587 subjects (53.6% female, mean age 38.4 years).
• Obesity prevalence was 16.3% (BMI), 58.5% (WC), and 78.0% (WHR).
• Individuals reporting 8+ hours of sitting daily showed increased likelihood of obesity across all measures: BMI (PR: 1.38), WC (PR: 1.20), and WHR (PR: 1.05) compared to those sitting <4 hours.

Conclusions:

• Greater sitting time is significantly associated with a higher prevalence of obesity in Peruvian adults.
• The association between sedentary behavior and obesity is consistent across multiple anthropometric indicators.
• Public health initiatives should focus on reducing sedentary time to combat obesity in the population.