Replication Data for a School-Based Exercise and Sleep Trial in Chinese Adolescents

A 4-month active intervention with 2-month follow-up from a cluster randomized clinical trial conducted in a senior high school in Guangzhou, China. The dataset contains 15,615 person-night observations from 386 adolescents aged 14-19 years, collected via wrist-worn accelerometry and self-report questionnaires. It was authored by Ma, Rui Si and deposited in Harvard Dataverse.

Use Cases

• Reproduce published analyses on the effect of exercise snacking on sleep onset regularity based on nightly accelerometer-derived sleep data.
• Analyze the relationship between daily step count and psychological well-being measures (DASS-21, WHO-5) across multiple assessment windows.
• Model the impact of demographic and socioeconomic covariates on sleep duration and physical activity outcomes in an adolescent population.
• Study the design and analysis considerations specific to a 2-arm parallel-group cluster randomized trial in a school setting.

Strengths

• Contains 15,615 person-night observations, providing granular longitudinal data.
• Includes objectively measured sleep and activity data from continuous wrist-worn accelerometry (Xiaomi Smart Band 8).
• Covers 386 participants across 12 classes with a 1:1 randomization design and four assessment time points.
• Data is fully de-identified with direct identifiers removed and participants referenced only by random study IDs.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data reflects a specific geographic and temporal context (one school in Guangzhou, China).

Provenance

Source

Harvard Dataverse

Collection Method

Data collected via a 2-arm parallel-group cluster randomized clinical trial using accelerometry and questionnaires.

Time Range

Covers a 4-month active intervention period with a 2-month postintervention follow-up.

Freshness

Last updated 2026-05 06 22:46:25; freshness should be verified.

Geography

A senior high school in Guangzhou, China.