Smartphone use is associated with later and shorter actigraphic sleep, and circadian clock delays in an indigenous Toba/Qom community

이 페이지는 아래 학술 논문의 초록(Abstract) 전문을 제공합니다. 원문은 하단 링크에서 확인하세요.

◆ 논문 초록 (Abstract)

Smartphones are integral to modern life, yet their influence on sleep and circadian rhythms are not fully understood, partly due to the many confounding factors in industrialized settings. The Toba/Qom from northern Argentina, a preindustrial group in which smartphones have only been introduced recently, offer a natural experiment to study the role of these devices in modulating biological rhythms and sleep. We recorded sleep through longitudinal wrist actigraphy from 100 participants in three Toba/Qom communities (age range = 12-49 y.o., 54% females) for 30-60 days at five different points between October 2023 and June 2025. The analysis of 8,407 actigraphic sleep events revealed that smartphone users (61-82% across data collection campaigns) exhibited a later sleep onset (+13 min, 95%CI [6, 20], p < .001) and a shorter sleep duration (-22 [-29, -14] min, p < .001) than non-users. This delay was supported by two mechanisms: 1) a physiological sustained shift, evidenced by a later dim-light melatonin onset in smartphone users (+34 [6, 62] min, p = .017); and 2) an acute nightly pattern, as users displayed later sleep acutely on nights on which they reported using their smartphones at bedtime (+12 [2, 21] min, p = .016). These findings confirm that smartphone-related sleep disruption is a multifaceted phenomenon involving both circadian physiology and behavioral changes. By focusing on an indigenous population slowly acquiring industrialized-world features, this study offers rare insight into the impact of digital integration on sleep health, with implications for human physiology and psychology.

◆ 원문 정보
저자: Trebucq LL, Moyano MD, Coldeira MF, Golombek DA, de la Iglesia HO et al.
저널: Sleep
연도: 2026
DOI: 10.1093/sleep/zsag039

PubMed 원문 보기 →   DOI 바로가기 →

🔗 이 논문을 인용한 글

• 밤만 되면 스마트폰 보는 당신, 수면호르몬이 사라지고 있습니다