Physical ActivityNCT07523659
The Influence of Climate and Air Pollution on Physical Activity of Chinese People in Shenyang and Shenzhen
An observational study of Physical Activity and Climate, run by Shenzhen Institutes of Advanced Technology ,Chinese Academy of Sciences at 2 sites in China.
Trial summary
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. Read more about this study
- Who is it for?
- Ages 18 to 55 yearsHealthy volunteers can take part
- Conditions the study is for
- Physical Activity, Climate, Air Pollution
- How many people
- 124 participants
- Where
- 2 sitesChina
- Study dates
- 1 Aug 2024to 31 Aug 2026
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 55 years
- All sexes
- Healthy volunteers accepted
- Adult
Study population: 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.
Who may be able to join
- Aged 18 to 55 years
- Residing in Shenzhen or Shenyang for the entire year
Who cannot join
- 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
Trial locations and contacts
2 sites in 1 country. Contact the study team or a site near you to ask about taking part.
China2 sites, 2 recruiting
- Recruiting
China Medical University
Shenyang
Deliang Wen, Doctor, dlwen@cmu.edu.cn
Yang Liu, Doctor, yliu0568@cmu.edu.cn
- Recruiting
Shenzhen Institutes of Advanced Technology, Chinese Academy of Science
Shenzhen, Guangdong
John R Speakman, 15810868669, j.speakman@abdn.ac.uk
Xueying Zhang, 18201296155, zhangxy@siat.ac.cn
About this study
Official title: The Influence of Climate and Air Pollution on Physical Activity of Chinese People in Shenyang(41.481175ºN) and Shenzhen(22.324386ºN)
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.
Read more
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.
Read the 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.
- Conditions
- Physical Activity, Climate, Air Pollution
- Medical subject headings
- Motor Activity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| 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. |
What is being measured
The primary outcome is the main question the study is designed to answer.
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.
Measured: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant
Secondary outcomes (11)
Temperature
Temperature in degrees Celsius will be collected using the HOBO mini-weather station.
Measured: Through study completion, an average of 2 years
Humidity
Humidity in %RH will be collected using the HOBO mini-weather station.
Measured: 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.
Measured: 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.
Measured: Through study completion, an average of 2 years
Sunshine duration
Sunshine duration in hours will be collected through open data website.
Measured: 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.
Measured: 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.
Measured: 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).
Measured: 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).
Measured: 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).
Measured: 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).
Measured: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Apr 2026
- Study start1 Aug 2024
- Primary completion31 Aug 2026 (estimated)
- Study completion31 Aug 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Physical ActivityStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Enrolment
- 124 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Shenzhen Institutes of Advanced Technology ,Chinese Academy of Sciences
- Sponsor type
- University, hospital or other
- Collaborators
- China Medical University, China
- Responsible party
- Principal investigator, John R. Speakman, Shenzhen Institutes of Advanced Technology ,Chinese Academy of Sciences
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07523659
- Sponsor's protocol ID
- SIAT-IRB-240415-H0888
- Status last verified
- Mar 2026
- First submitted
- 11 Aug 2025
- Last updated
- 13 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 13 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Influence of Climate and Air Pollution on Physical Activity of Chinese People in Shenyang(41.481175ºN) and Shenzhen(22.324386ºN)
- ClinicalTrials.gov ID
- NCT07523659
- Acronym / sponsor ID
- SIAT-IRB-240415-H0888
- Conditions
- Physical Activity, Climate, Air Pollution
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 124 participants (estimated)
- Lead sponsor
- Shenzhen Institutes of Advanced Technology ,Chinese Academy of SciencesUniversity, hospital or other
- Collaborators
- China Medical University, China
- Study start
- 1 Aug 2024 (actual)
- Primary completion
- 31 Aug 2026 (estimated)
- Study completion
- 31 Aug 2026 (estimated)
- First posted
- 13 Apr 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 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. |
Who may qualify
- Ages
- 18 to 55 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- 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.
Key inclusion criteria (2 listed)
- Aged 18 to 55 years
- Residing in Shenzhen or Shenyang for the entire year
Key exclusion criteria (4 listed)
- 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
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Physical activity level
Time frame: 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.
11 secondary outcomes
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
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Apr 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Physical Activity and Climate, run by Shenzhen Institutes of Advanced Technology ,Chinese Academy of Sciences at 2 sites in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 13 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact John R Speakman, Doctor (15810868669, j.speakman@abdn.ac.uk), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Physical activity level (time frame: Through study completion, every two months across 6 assessment rounds, up to 12 months per participant). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Apr 2026.