Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Class |
|---|---|
| China Medical University, China | OTHER |
Not provided
Not provided
Not provided
Not provided
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.
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.
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 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. |
Not provided
| Measure | Description | Time Frame |
|---|---|---|
| Physical activity level | 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. | Through study completion, every two months across 6 assessment rounds, up to 12 months per participant |
| Measure | Description | Time Frame |
|---|---|---|
| Temperature | Temperature in degrees Celsius will be collected using the HOBO mini-weather station. | Through study completion, an average of 2 years |
| Humidity | Humidity in %RH will be collected using the HOBO mini-weather station. |
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
The study population consisted of healthy individuals. Female participants were neither pregnant nor planning to become pregnant, and none were lactating. All subjects were free from serious illnesses or disabilities that could interfere with the study.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| John R Speakman, Doctor | Contact | 15810868669 | j.speakman@abdn.ac.uk | |
| Xueying Zhang, Doctor | Contact | 18201296155 | zhangxy@siat.ac.cn |
Not provided
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Shenzhen Institutes of Advanced Technology, Chinese Academy of Science | Recruiting | Shenzhen | Guangdong | China |
Not provided
| ID | Term |
|---|---|
| D009043 | Motor Activity |
| ID | Term |
|---|---|
| D001519 | Behavior |
Not provided
Not provided
Not provided
Not provided
Not provided
| Through study completion, an average of 2 years |
| Subject exposure to environmental temperature | Exposure temperature in degrees Celsius will be measured by Ibutton. The Ibutton (DS1921G) monitors will be provided for the assessment of both indoor and outdoor temperature of their living environment. The iButtons be affixed to the hand bag to measure the subject exposure temperature. | Through study completion, every two months across 6 assessment rounds, up to 12 months per participant |
| PM2.5 | PM2.5 in μg/m3 will be collected through open data website. | Through study completion, an average of 2 years |
| Sunshine duration | Sunshine duration in hours will be collected through open data website. | Through study completion, an average of 2 years |
| Height | Height in centimeters will be measured by Leicester stadiometer (Seca 217, Germany) to the nearest 0.1cm. Subjects wearing no shoes. | Through study completion, every two months across 6 assessment rounds, up to 12 months per participant |
| Body Weight | Subjects will be asked to fast overnight and weight in kilograms will be measured using a calibrated Seca body weight scale first thing in the morning on subjects wearing light clothes and no shoes. | Through study completion, every two months across 6 assessment rounds, up to 12 months per participant |
| Fat percentage | Fat percentage in percentage will be measured using Bioimpedance Analysis (Tanita, MC-980). | Through study completion, every two months across 6 assessment rounds, up to 12 months per participant |
| Fat mass | Fat mass in kilograms will be measured using Bioimpedance Analysis (Tanita, MC-980). | Through study completion, every two months across 6 assessment rounds, up to 12 months per participant |
| Fat-free mass | Fat-free mass in kilograms will be measured using Bioimpedance Analysis (Tanita, MC-980). | Through study completion, every two months across 6 assessment rounds, up to 12 months per participant |
| Muscle mass | Muscle mass in kilograms will be measured using Bioimpedance Analysis (Tanita, MC-980). | Through study completion, every two months across 6 assessment rounds, up to 12 months per participant |
| China Medical University | Recruiting | Shenyang | China |
|