More Minutes, Fewer Steps: Hourly Associations Between Adolescent Smartphone Use and Physical Activity

Key Points

• Increased smartphone use correlates with decreased physical activity levels among adolescents, indicating a significant trend.
• Data reflects a notable reduction of approximately 15% in daily physical activity for every hour of smartphone use.
• Observational analysis assessed the hourly smartphone use against physical activity levels across a large adolescent population.
• Findings suggest that higher smartphone use may lead to sedentary behaviors, highlighting a growing concern for adolescent health.