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Updated: Mar 21, 2026

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Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
Published on: March 7, 2019
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Feel lonely? Get active: Exploring the daily relationship between accelerometer-measured physical activity and
Siyuan Zhang1, Yunlong Song1, Andrew Steptoe2
1School of Education, Tianjin University, Tianjin, China; Institute of Applied Psychology, Tianjin University, Tianjin, China.
Psychology of Sport and Exercise
|March 19, 2026
Summary
Daily moderate-to-vigorous physical activity (MVPA) can reduce loneliness in young adults, especially men. Loneliness did not predict future physical activity levels in this study.
Area of Science:
- Behavioral Science
- Psychology
- Public Health
Background:
- Previous research indicates a link between physical activity and loneliness, but the causal direction is unclear.
- Understanding the daily interplay between physical activity and loneliness is crucial for developing effective interventions.
Purpose of the Study:
- To investigate the daily temporal relationship between physical activity and loneliness in young adults.
- To examine within-person and between-person associations between physical activity and loneliness.
Main Methods:
- 150 young adults completed daily surveys for 21 days.
- Physical activity was objectively measured using ActiGraph accelerometers.
- Loneliness was assessed daily using the UCLA Loneliness Scale and a single-item measure; data analyzed with cross-lagged multilevel models.
Main Results:
- Higher daily moderate-to-vigorous physical activity (MVPA) and total energy expenditure (TEE) were associated with lower daily loneliness.
- No significant between-person effects were found for physical activity and loneliness.
- The association between MVPA and reduced loneliness was stronger in men than in women.
Conclusions:
- Engaging in MVPA may be a viable strategy for reducing daily feelings of loneliness, particularly in men.
- Loneliness does not appear to predict subsequent physical activity levels.
- Further research is needed to explore underlying mechanisms and establish causality for targeted loneliness interventions.
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