Cross-sectional and prospective associations between children's 24-h time use and their health-related quality of life: a compositional isotemporal substitution approach

• DOI: 10.1016/j.lanwpc.2023.100918
• Publication Date: 2023-10-06T03:18:34Z
• Authors: Sarah Yi Xuan Tan; Natarajan Padmapriya; Jonathan Y. Bernard; Jia Ying Toh; Hwee-Lin Wee; Kok Hian Tan; Fabian Kok Peng Yap; Yung Seng Lee; Yap-Seng Chong; Keith Godfrey; Johan Gunnar Erik...; Lynette Pei-Chi Shek; Chuen Seng Tan; Mary Foong-Fong C...; Falk Müller-Rieme...
• Keywords: Adolescent; Physical activity; Health-related quality of life; 610; Movement behaviour; Articles; Public health care science, environmental and occupational health; General medicine, internal medicine and other clinical medicine; 3. Good health; 618; Prospective; Cross-sectional; [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie; Medicine, Health and Life Sciences; Time-use; [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie; Sleep; Children; Inactivity

Promoting active, balanced lifestyles among children may be an important approach to optimising their health-related quality of life (HRQoL). However, the relationships between children's movement behaviours and HRQoL remain unclear.We examined the associations between movement behaviours (sleep, inactivity, light and moderate-to-vigorous intensity physical activity) assessed using accelerometers at ages 8 and 10 years and self-reported HRQoL scores (overall, and physical and emotional well-being, self-esteem, relationship with family and friends, and school functioning domains) at age 10 years among 370 children in a local birth cohort using compositional isotemporal substitution techniques.Cross-sectionally, light and moderate-to-vigorous intensity physical activities were associated with better self-esteem (β = 15.94 [2.71, 29.18]) and relationship with friends (β = 10.28 [3.81, 16.74]) scores respectively. Prospectively, inactivity was associated with lower overall HRQoL (β = -10.00 [-19.13, -0.87]), relationship with friends (β = -16.41 [-31.60, -1.23]) and school functioning (β = -15.30 [-29.16, -1.44]) scores, while sleep showed a positive trend with overall HRQoL (β = 10.76 [-1.09, 22.61]) and school functioning (β = 17.12 [-0.87, 35.10]) scores. Children's movement behaviours were not associated with their physical and emotional well-being, or relationship with family scores. The isotemporal substitution analyses suggest that increasing time spent in physical activity and/or sleep at the expense of inactivity may benefit children's HRQoL.Our findings suggest that sleep and physical activity may be associated with better HRQoL, with the inverse for inactivity. However, the relationship between children's movement behaviours and HRQoL is complex and warrants further research.Singapore National Research Foundation, Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research.