The Influence of Climate and Air Pollution on Physical Activity of Chinese People in Shenyang(41.481175ºN) and Shenzhen(22.324386ºN)
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 124
- 试验地点
- 2
- 主要终点
- Physical activity level
研究概览
简要总结
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.
详细描述
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.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 18 Years 至 55 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Aged 18 to 55 years
- •Residing in Shenzhen or Shenyang for the entire year
排除标准
- •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
研究组 & 干预措施
Subjects in Shenzhen
The investigators planned to recruit 62 subjects in Shenzhen. Shenzhen is located in 22.324386ºN, 114.031040ºE, the south of China, with long summers and short winters, high temperatures and frequent rains. The average annual temperature is 23.3℃. In addition, Shenzhen is a city with good economic and technological development. The investigators will measure the physical activity of subjects, and the Temperature, humidity and PM2.5 data of Shenzhen.
Subjects in Shenyang
The investigators planned to recruit 62 subjects in Shenyang. Shenyang is located in 41.481175ºN, 123.253118ºE, the northeastern of China, with cold winters and warm summers, also has long cold periods. The average annual temperature ranges from 6.2 to 9.7℃. In addition, Shenyang focuses on industrial development. The investigators will measure the physical activity of subjects, and the Temperature, humidity and PM2.5 data of Shenyang.
结局指标
主要结局
Physical activity level
时间窗: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant
Physical activity in vector magnitude counts will be recorded using GT3X accelerometer worn near the hip for a consecutive period of 7 days. The monitor should not be worn while bathing or swimming.
次要结局
- Temperature(Through study completion, an average of 2 years)
- Humidity(Through study completion, an average of 2 years)
- Subject exposure to environmental temperature(Through study completion, every two months across 6 assessment rounds, up to 12 months per participant)
- PM2.5(Through study completion, an average of 2 years)
- Sunshine duration(Through study completion, an average of 2 years)
- Height(Through study completion, every two months across 6 assessment rounds, up to 12 months per participant)
- Body Weight(Through study completion, every two months across 6 assessment rounds, up to 12 months per participant)
- Fat percentage(Through study completion, every two months across 6 assessment rounds, up to 12 months per participant)
- Fat mass(Through study completion, every two months across 6 assessment rounds, up to 12 months per participant)
- Fat-free mass(Through study completion, every two months across 6 assessment rounds, up to 12 months per participant)
- Muscle mass(Through study completion, every two months across 6 assessment rounds, up to 12 months per participant)
研究者
John R. Speakman
Professer
Shenzhen Institutes of Advanced Technology ,Chinese Academy of Sciences