The Influence of Climate and Air Pollution on Physical Activity of Chinese People in Shenyang and Shenzhen
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- This is an observational study: the protocol does not assign a study treatment.
- Who it may be relevant to
- Registry conditions: Physical Activity, Climate, Air Pollution. Basic parameters: 18 years — 55 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- China
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Official title
The Influence of Climate and Air Pollution on Physical Activity of Chinese People in Shenyang(41.481175ºN) and Shenzhen(22.324386ºN)
Overview
Physical activity (PA) refers to bodily movements that result in a significant increase in energy expenditure due to the contraction of skeletal muscles. Physical inactivity has become a major global public health concern and is currently the fourth leading cause of death worldwide. The World Health Organization (WHO) recommends that adults engage in at least 150 minutes of moderate-intensity physical activity (MPA) or 75 minutes of vigorous-intensity physical activity (VPA) per week. Although some studies suggest that individual differences in PA may have a genetic basis, PA is generally considered to be largely under voluntary control and influenced by climatic and environmental factors. For instance, extreme temperatures-either hot or cold-can increase health risks and reduce individuals' willingness to engage in physical activity. In addition, air pollution, particularly fine particulate matter (PM2.5), poses serious health risks. Exercising in polluted environments may trigger asthma, cardiovascular, or pulmonary conditions. Since the Industrial Revolution, fossil fuel emissions have contributed to a global surface temperature increase of approximately 1.1°C, with projections suggesting a further rise of 2.5-2.9°C by the end of the century. At the same time, PM2.5 pollution has become a pressing issue, contributing to an estimated 7 million deaths globally in 2012-over one-third of which occurred in rapidly developing Asian countries. Given the seasonal and geographic variability in climate and air quality, physical activity levels are likely to be affected accordingly.This study aims to investigate the extent to which climatic and environmental factors influence physical activity levels and intensity.
Detailed description
This study will be conducted in two cities in China: Shenyang (41.481175°N) and Shenzhen (22.324386°N), with 62 participants recruited from each location. By assessing participants' body composition and physical activity levels, along with the climatic and environmental conditions in both cities, we aim to compare how different climates and environmental exposures influence physical activity.
Participants will be asked to wear a GT3X accelerometer every two months to monitor physical activity levels, and an iButton temperature sensor to record ambient temperature. A total of six measurement rounds will be conducted. Concurrently, atmospheric temperature data will be collected via local weather stations, and PM2.5 data will be obtained from publicly available sources.
Primary outcome measures
- Physical activity level [Time frame: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant]
Secondary outcome measures (11)
- Temperature [Time frame: Through study completion, an average of 2 years]
- Humidity [Time frame: Through study completion, an average of 2 years]
- Subject exposure to environmental temperature [Time frame: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant]
- PM2.5 [Time frame: Through study completion, an average of 2 years]
- Sunshine duration [Time frame: Through study completion, an average of 2 years]
- Height [Time frame: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant]
- Body Weight [Time frame: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant]
- Fat percentage [Time frame: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant]
- Fat mass [Time frame: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant]
- Fat-free mass [Time frame: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant]
- Muscle mass [Time frame: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant]
Eligibility criteria
Inclusion criteria
- Aged 18 to 55 years
- Residing in Shenzhen or Shenyang for the entire year
Exclusion criteria
- Disabilities that limit physical activity
- Any condition preventing participation in physical activity
- Pregnant or planning pregnancy during the study period
- Lactating or planning to lactate during the study period
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Observational model
- Cohort
Study locations
China · 2 centers
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Science — Shenzhen
- China Medical University — Shenyang
Identifiers
NCT: NCT07523659 · SIAT-IRB-240415-H0888