Sport ParticipationNCT07488715
High-Intensity Interval Training Across Exercise Environments: Acute Effects on Physiological Stress, Cardiovascular Responses, Executive Function, and Psychological Experience
A study testing HIIT in Indoor Environment, HIIT in Outdoor Athletic Track and HIIT in Green Park Environment in people with Sport Participation, run by Shanghai University of Sport at 1 site in China.
Trial summary
The goal of this clinical trial utilizing a randomized crossover design)is to explore the modulating effects of different exercise environments （green parks, outdoor athletic tracks, and indoor settings) on acute responses to High-Intensity Interval Training (HIIT). Read more about this study
- Who is it for?
- Ages 18 to 25 yearsHealthy volunteers can take part
- Conditions the study is for
- Sport Participation
- What is being tested?
- HIIT in Indoor Environment, HIIT in Outdoor Athletic Track and HIIT in Green Park Environment
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 28 participants
- Where
- 1 siteChina
- Study dates
- 15 Apr 2026to 10 Jun 2026
- Phase
- Interventional
- Are there results?
- None posted in the registry
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 25 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Full-time college students aged 18 to 25 years old.
- Healthy, with no history of major cardiovascular, respiratory, neurological, or endocrine diseases.
- No exercise contraindications or lower limb injuries, able to safely complete high-intensity interval training (including jump rope).
- No recent events affecting physiological or psychological status, such as severe insomnia, anxiety, depression, or extreme fatigue.
- Have not taken medications or supplements affecting heart rate, blood pressure, mood, or attention in the past week.
- Normal vision or corrected-to-normal vision, capable of smoothly completing computerized cognitive tasks.
- Able to comprehend and truthfully complete psychological questionnaires.
- Voluntarily participate, fully understand the research procedures, and sign the informed consent form.
Who cannot join
- Severe cardiovascular diseases (e.g., myocardial infarction, severe arrhythmias, uncontrolled hypertension).
- Severe respiratory diseases (e.g., severe asthma, chronic obstructive pulmonary disease, or recent acute respiratory infections).
- History of neurological diseases or brain injuries (e.g., epilepsy, recent concussion) that may affect safety or cognitive tasks.
- Uncontrolled endocrine or metabolic diseases that may interfere with cortisol or metabolic measurements.
- Severe psychological disorders or receiving psychiatric treatment in the past month.
- Use of drugs or supplements significantly affecting heart rate, blood pressure, cortisol, or attention in the past 7 days.
Show all 15Show fewer
- Currently pregnant or lactating.
- Acute illness in the past 48 hours (e.g., fever, acute gastroenteritis).
- Severe bleeding tendencies or blood disorders, unable to provide biological samples.
- Substance use interference, such as heavy drinking or substance dependence in the past 2 weeks.
- Unable to meet pre-experiment control requirements (e.g., avoiding caffeine, heavy exercise, tobacco).
- Unable to complete cognitive tasks (e.g., poor vision, inability to use a keyboard/mouse).
- Injuries or conditions limiting the safety of HIIT (e.g., recent severe lower limb injury).
- Participation in similar HIIT environmental intervention studies within the past 3 months.
- Insufficient ability to give informed consent or unwilling to sign the consent form.
Trial locations and contacts
1 site in 1 country.
China1 site
Shanghai University of Sport
Shanghai, Shanghai Municipality, 200438
About this study
The goal of this clinical trial utilizing a randomized crossover design)is to explore the modulating effects of different exercise environments （green parks, outdoor athletic tracks, and indoor settings) on acute responses to High-Intensity Interval Training (HIIT). It aims to determine if environmental factors can optimize an individual's stress regulation, cognitive improvement, and psychological exercise experience. The study involves 25 healthy full-time college students aged 18 to 25.
The main questions it aims to answer are：
Read more
- Are there significant differences in physiological stress (e.g., salivary cortisol, HRV) and cardiovascular responses when performing HIIT in different exercise environments (indoor, track, park)?
- How does the exercise environment influence executive function (inhibitory control and cognitive flexibility) and subjective psychological experiences (e.g., emotional state, enjoyment, and exercise motivation) following HIIT? Researchers will compare the performance of participants across three conditions-Green Park (natural environment), Outdoor Athletic Track (conventional outdoor environment), and Indoor Venue (artificial environment)-to identify the modulating effects of different environments on exercise outcomes.
Participants will ：
Sign the informed consent form and complete baseline health screenings and psychological scales.
Undergo resting physiological measurements (Heart Rate, Heart Rate Variability, Blood Pressure, Salivary Cortisol) and complete computerized executive function tasks (Stroop task and More-odd-shifting task).
Perform approximately 15 minutes of standardized preparation activities (warm-up).
Complete a 15-minute high-intensity interval jump-rope training session (using a protocol of 30 seconds of high-intensity exercise followed by 30 seconds of recovery) in a randomly assigned environment.
Immediately following the exercise, undergo repeated physiological measurements, psychological assessments, and cognitive function tests.
Read the detailed description
The current study utilizes a randomized, counterbalanced crossover design to investigate how different exercise environments modulate the acute physiological and psychological responses to High-Intensity Interval Training (HIIT). Each participant will complete three experimental sessions corresponding to three distinct environments: a green park (natural environment), an outdoor athletic track (conventional outdoor environment), and an indoor venue (artificial environment).
To eliminate carry-over effects and fatigue accumulation, a minimum washout period of 48 hours is mandated between each experimental session for every participant. The experimental procedures for each session are highly standardized, lasting approximately 60 minutes in total, and are structured into four main phases:
- Pre-Exercise Baseline Assessment (approx. 20 minutes) Upon arrival at the designated exercise environment, participants will undergo a brief health and safety screening. Researchers will then collect baseline physiological data, including Heart Rate (HR), Heart Rate Variability (HRV), Blood Pressure (BP), and salivary cortisol samples. Following physiological sampling, participants will complete subjective psychological scales and perform two computerized cognitive tasks: the Stroop task (assessing inhibitory control) and the More-odd-shifting task (assessing cognitive flexibility).
- Standardized Warm-Up (approx. 15 minutes) Participants will perform a standardized warm-up consisting of light jogging, dynamic lower-limb stretching, and low-intensity jump rope exercises. The intensity of this phase is strictly controlled at approximately 60% of the participant's maximum heart rate (HRmax) to ensure safety and physiological readiness for the subsequent high-intensity training.
- HIIT Intervention Phase (15 minutes) Participants will engage in a standardized jump-rope HIIT protocol. The protocol involves 15 continuous rounds, with each round comprising 30 seconds of high-intensity jumping followed by 30 seconds of active recovery (e.g., slow walking or light ropeless jumping at 60-80 steps/minute). The high-intensity phases target an intensity of 85-90% HRmax (Rating of Perceived Exertion [RPE] 15-17), while the recovery phases target 55-60% HRmax (RPE 9-10). The jump rope variations are systematically divided into basic fast jumps (rounds 1-5), run-jumps (rounds 6-10), and mixed jump patterns including jumping jacks (rounds 11-15). Heart rate, movement quality, and physical status are continuously monitored by the research team throughout the session.
- Post-Exercise Assessment (approx. 20 minutes) Immediately upon completing the 15-minute HIIT protocol, participants will undergo a second round of assessments identical to the baseline measurements. This includes the immediate collection of post-exercise physiological data (HRV, BP, Salivary Cortisol), completion of post-exercise psychological scales (assessing exercise enjoyment, affect, and perceived restorativeness), and a re-test of the computerized cognitive tasks.
This rigorous and highly controlled methodology ensures that any observed differences in stress regulation, executive function, and psychological exercise experience can be reliably attributed to the modulatory effects of the specific exercise environment.
- Conditions
- Sport Participation
- Being tested
- HIIT in Indoor Environment, HIIT in Outdoor Athletic Track, HIIT in Green Park Environment
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
HIIT in Indoor EnvironmentOther
Participants will perform a 15-minute jump-rope High-Intensity Interval Training (HIIT) session in a controlled indoor sports venue. The protocol consists of 15 rounds of 30-second high-intensity exercise (target: 85-90% HRmax, RPE 15-17) followed by 30-second active recovery (target: 55-60% HRmax, RPE 9-10). The session includes standardized warm-up and post-exercise physiological and cognitive assessments.
HIIT in Outdoor Athletic TrackOther
Participants will perform a 15-minute jump-rope HIIT session on a standard outdoor athletic track. The training protocol is identical to the indoor session: 15 rounds of 30-second high-intensity work (85-90% HRmax) and 30-second recovery (55-60% HRmax). This condition focuses on the effects of a conventional outdoor built environment on physiological stress and executive function.
HIIT in Green Park EnvironmentOther
Participants will perform a 15-minute jump-rope HIIT session in a natural green park environment. The protocol remains consistent: 15 rounds of 30-second high-intensity work (85-90% HRmax) and 30-second recovery (55-60% HRmax). This condition aims to investigate the synergistic effects of "green exercise" on stress reduction, cardiovascular response, and cognitive enhancement.
| Study group | Role | What they receive |
|---|---|---|
| indoor Environment | Experimental | Participants will complete a single session of jump-rope High-Intensity Interval Training (HIIT) in a controlled indoor sports venue. Receives: Other: HIIT in Indoor Environment |
| Outdoor Athletic Track | Experimental | Participants will complete a single session of jump-rope High-Intensity Interval Training (HIIT) on a standard outdoor athletic track. Receives: Other: HIIT in Outdoor Athletic Track |
| Green Park | Experimental | Participants will complete a single session of jump-rope High-Intensity Interval Training (HIIT) in a natural green park environment. Receives: Other: HIIT in Green Park Environment |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Salivary Cortisol Concentration
Measured: Administered at baseline (pre-exercise) and post-exercise.
Secondary outcomes (10)
Change in Inhibitory Control Assessed by the Stroop Task
Measured: Administered at baseline (pre-exercise) and post-exercise.
Change in Cognitive Flexibility Assessed by the More-odd-shifting Task
Measured: Baseline (pre-exercise) and 20 minutes post-exercise
Change in Heart Rate Variability (HRV)
Measured: 20 minutes pre-exercise, immediately post-exercise, 5 minutes post-exercise, 10 minutes post-exercise, and 20 minutes post-exercise
Change in Blood Pressure
Measured: 20 minutes pre-exercise, immediately post-exercise, 5 minutes post-exercise, 10 minutes post-exercise, and 20 minutes post-exercise
Change in Heart Rate
Measured: 20 minutes pre-exercise, immediately post-exercise, 5 minutes post-exercise, 10 minutes post-exercise, and 20 minutes post-exercise
Mood State Assessed by Positive and Negative Affect Schedule (PANAS)
The Positive and Negative Affect Schedule (PANAS) consists of two subscales to measure both positive affect (10 items) and negative affect (10 items) reflecting the past week. Items are rated on a 5-point scale (1=very slightly or not at all, 5=extremely). The total score for the Positive Affect scale ranges from 10 to 50, with higher scores indicating higher levels of positive emotions (a better outcome). The total score for the Negative Affect scale ranges from 10 to 50, with higher scores indicating higher levels of negative emotions (a worse outcome).
Measured: Administered at baseline (pre-exercise) and post-exercise.
Change in Exercise Enjoyment Assessed by Physical Activity Enjoyment Scale (PACES)
The Physical Activity Enjoyment Scale (PACES) is used to evaluate the participant's subjective enjoyment of the exercise session. The scale consists of 18 items, each rated on a 7-point scale (1=completely disagree, 7=completely agree). The total score ranges from 18 to 126. Higher scores indicate a greater level of exercise enjoyment (a better outcome).
Measured: Baseline (pre-exercise) and 20 minutes post-exercise
Habitual Sport Motivation Assessed by Sport Motivation Scale (SMS)
The Sport Motivation Scale (SMS) is used to evaluate habitual, long-term motivation toward sports (reflecting on the past year). It consists of 28 items rated on a 7-point scale (1=does not correspond at all, 7=corresponds exactly). The total global score ranges from 28 to 196. Higher scores indicate higher levels of self-determined motivation toward sports (a better outcome).
Measured: Administered at baseline (pre-exercise) and post-exercise.
Attentional Control Assessed by Attentional Control Scale (ACS)
The Attentional Control Scale (ACS) is used to assess the participant's general trait ability to control attention and focus. The scale consists of 20 items rated on a 4-point scale (1=almost never, 4=always). The total score ranges from 20 to 80. Higher scores indicate better attentional control capabilities (a better outcome).
Measured: Administered at baseline (pre-exercise) and post-exercise.
Perceived Recovery Assessed by Restoration Outcome Scale (ROS)
The Restoration Outcome Scale (ROS) evaluates physical and psychological restoration through 6 items rated on a 5-point scale (1=strongly disagree, 5=strongly agree). The total score ranges from 6 to 30. Higher scores indicate a higher level of perceived physical and psychological recovery (a better outcome).
Measured: Administered at baseline (pre-exercise) and post-exercise.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Mar 2026
- Study start15 Apr 2026
- Primary completion10 Jun 2026
- Study completion10 Jun 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Sport ParticipationStudies 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 28 participants (actual)
Sponsor and investigators
- Lead sponsor
- Shanghai University of Sport
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Zhu kun, Shanghai University of Sport
- Investigators
- kun Zhu, Ph.D., Principal investigator, Shanghai University of Sportjiwei Chen, Ph.D., Study chair, Shanghai University of Sport
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07488715
- Sponsor's protocol ID
- 102772025RT309
- Status last verified
- Jul 2026
- First submitted
- 11 Mar 2026
- Last updated
- 21 Jul 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 21 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- High-Intensity Interval Training Across Exercise Environments: Acute Effects on Physiological Stress, Cardiovascular Responses, Executive Function, and Psychological Experience
- ClinicalTrials.gov ID
- NCT07488715
- Acronym / sponsor ID
- 102772025RT309
- Conditions
- Sport Participation
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 28 participants (actual)
- Lead sponsor
- Shanghai University of SportUniversity, hospital or other
- Study start
- 15 Apr 2026 (actual)
- Primary completion
- 10 Jun 2026 (actual)
- Study completion
- 10 Jun 2026 (actual)
- First posted
- 23 Mar 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.
The goal of this clinical trial utilizing a randomized crossover design)is to explore the modulating effects of different exercise environments （green parks, outdoor athletic tracks, and indoor settings) on acute responses to High-Intensity Interval Training (HIIT). It aims to determine if environmental factors can optimize an individual's stress regulation, cognitive improvement, and psychological exercise experience. The study involves 25 healthy full-time college students aged 18 to 25.
The main questions it aims to answer are：
- Are there significant differences in physiological stress (e.g., salivary cortisol, HRV) and cardiovascular responses when performing HIIT in different exercise environments (indoor, track, park)?
- How does the exercise environment influence executive function (inhibitory control and cognitive flexibility) and subjective psychological experiences (e.g., emotional state, enjoyment, and exercise motivation) following HIIT? Researchers will compare the performance of participants across three conditions-Green Park (natural environment), Outdoor Athletic Track (conventional outdoor environment), and Indoor Venue (artificial environment)-to identify the modulating effects of different environments on exercise outcomes.
Participants will ：
Sign the informed consent form and complete baseline health screenings and psychological scales.
Undergo resting physiological measurements (Heart Rate, Heart Rate Variability, Blood Pressure, Salivary Cortisol) and complete computerized executive function tasks (Stroop task and More-odd-shifting task).
Perform approximately 15 minutes of standardized preparation activities (warm-up).
Complete a 15-minute high-intensity interval jump-rope training session (using a protocol of 30 seconds of high-intensity exercise followed by 30 seconds of recovery) in a randomly assigned environment.
Immediately following the exercise, undergo repeated physiological measurements, psychological assessments, and cognitive function tests.
Detailed description
The current study utilizes a randomized, counterbalanced crossover design to investigate how different exercise environments modulate the acute physiological and psychological responses to High-Intensity Interval Training (HIIT). Each participant will complete three experimental sessions corresponding to three distinct environments: a green park (natural environment), an outdoor athletic track (conventional outdoor environment), and an indoor venue (artificial environment).
To eliminate carry-over effects and fatigue accumulation, a minimum washout period of 48 hours is mandated between each experimental session for every participant. The experimental procedures for each session are highly standardized, lasting approximately 60 minutes in total, and are structured into four main phases:
- Pre-Exercise Baseline Assessment (approx. 20 minutes) Upon arrival at the designated exercise environment, participants will undergo a brief health and safety screening. Researchers will then collect baseline physiological data, including Heart Rate (HR), Heart Rate Variability (HRV), Blood Pressure (BP), and salivary cortisol samples. Following physiological sampling, participants will complete subjective psychological scales and perform two computerized cognitive tasks: the Stroop task (assessing inhibitory control) and the More-odd-shifting task (assessing cognitive flexibility).
- Standardized Warm-Up (approx. 15 minutes) Participants will perform a standardized warm-up consisting of light jogging, dynamic lower-limb stretching, and low-intensity jump rope exercises. The intensity of this phase is strictly controlled at approximately 60% of the participant's maximum heart rate (HRmax) to ensure safety and physiological readiness for the subsequent high-intensity training.
- HIIT Intervention Phase (15 minutes) Participants will engage in a standardized jump-rope HIIT protocol. The protocol involves 15 continuous rounds, with each round comprising 30 seconds of high-intensity jumping followed by 30 seconds of active recovery (e.g., slow walking or light ropeless jumping at 60-80 steps/minute). The high-intensity phases target an intensity of 85-90% HRmax (Rating of Perceived Exertion [RPE] 15-17), while the recovery phases target 55-60% HRmax (RPE 9-10). The jump rope variations are systematically divided into basic fast jumps (rounds 1-5), run-jumps (rounds 6-10), and mixed jump patterns including jumping jacks (rounds 11-15). Heart rate, movement quality, and physical status are continuously monitored by the research team throughout the session.
- Post-Exercise Assessment (approx. 20 minutes) Immediately upon completing the 15-minute HIIT protocol, participants will undergo a second round of assessments identical to the baseline measurements. This includes the immediate collection of post-exercise physiological data (HRV, BP, Salivary Cortisol), completion of post-exercise psychological scales (assessing exercise enjoyment, affect, and perceived restorativeness), and a re-test of the computerized cognitive tasks.
This rigorous and highly controlled methodology ensures that any observed differences in stress regulation, executive function, and psychological exercise experience can be reliably attributed to the modulatory effects of the specific exercise environment.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| indoor Environment | Experimental | Other: HIIT in Indoor EnvironmentParticipants will complete a single session of jump-rope High-Intensity Interval Training (HIIT) in a controlled indoor sports venue. |
| Outdoor Athletic Track | Experimental | Other: HIIT in Outdoor Athletic TrackParticipants will complete a single session of jump-rope High-Intensity Interval Training (HIIT) on a standard outdoor athletic track. |
| Green Park | Experimental | Other: HIIT in Green Park EnvironmentParticipants will complete a single session of jump-rope High-Intensity Interval Training (HIIT) in a natural green park environment. |
Who may qualify
- Ages
- 18 to 25 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (8 listed)
- Full-time college students aged 18 to 25 years old.
- Healthy, with no history of major cardiovascular, respiratory, neurological, or endocrine diseases.
- No exercise contraindications or lower limb injuries, able to safely complete high-intensity interval training (including jump rope).
- No recent events affecting physiological or psychological status, such as severe insomnia, anxiety, depression, or extreme fatigue.
- Have not taken medications or supplements affecting heart rate, blood pressure, mood, or attention in the past week.
Key exclusion criteria (15 listed)
- Severe cardiovascular diseases (e.g., myocardial infarction, severe arrhythmias, uncontrolled hypertension).
- Severe respiratory diseases (e.g., severe asthma, chronic obstructive pulmonary disease, or recent acute respiratory infections).
- History of neurological diseases or brain injuries (e.g., epilepsy, recent concussion) that may affect safety or cognitive tasks.
- Uncontrolled endocrine or metabolic diseases that may interfere with cortisol or metabolic measurements.
- Severe psychological disorders or receiving psychiatric treatment in the past month.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| HIIT in Indoor EnvironmentParticipants will perform a 15-minute jump-rope High-Intensity Interval Training (HIIT) session in a controlled indoor sports venue. The protocol consists of 15 rounds of 30-second high-intensity exercise (target: 85-90% HRmax, RPE 15-17) followed by 30-second active recovery (target: 55-60% HRmax, RPE 9-10). The session includes standardized warm-up and post-exercise physiological and cognitive assessments. | Other | indoor Environment |
| HIIT in Outdoor Athletic TrackParticipants will perform a 15-minute jump-rope HIIT session on a standard outdoor athletic track. The training protocol is identical to the indoor session: 15 rounds of 30-second high-intensity work (85-90% HRmax) and 30-second recovery (55-60% HRmax). This condition focuses on the effects of a conventional outdoor built environment on physiological stress and executive function. | Other | Outdoor Athletic Track |
| HIIT in Green Park EnvironmentParticipants will perform a 15-minute jump-rope HIIT session in a natural green park environment. The protocol remains consistent: 15 rounds of 30-second high-intensity work (85-90% HRmax) and 30-second recovery (55-60% HRmax). This condition aims to investigate the synergistic effects of "green exercise" on stress reduction, cardiovascular response, and cognitive enhancement. | Other | Green Park |
Primary outcome
Change in Salivary Cortisol Concentration
Time frame: Administered at baseline (pre-exercise) and post-exercise.
10 secondary outcomes
Change in Inhibitory Control Assessed by the Stroop Task
Time frame: Administered at baseline (pre-exercise) and post-exercise.
Change in Cognitive Flexibility Assessed by the More-odd-shifting Task
Time frame: Baseline (pre-exercise) and 20 minutes post-exercise
Change in Heart Rate Variability (HRV)
Time frame: 20 minutes pre-exercise, immediately post-exercise, 5 minutes post-exercise, 10 minutes post-exercise, and 20 minutes post-exercise
Change in Blood Pressure
Time frame: 20 minutes pre-exercise, immediately post-exercise, 5 minutes post-exercise, 10 minutes post-exercise, and 20 minutes post-exercise
Change in Heart Rate
Time frame: 20 minutes pre-exercise, immediately post-exercise, 5 minutes post-exercise, 10 minutes post-exercise, and 20 minutes post-exercise
Mood State Assessed by Positive and Negative Affect Schedule (PANAS)
Time frame: Administered at baseline (pre-exercise) and post-exercise.
Change in Exercise Enjoyment Assessed by Physical Activity Enjoyment Scale (PACES)
Time frame: Baseline (pre-exercise) and 20 minutes post-exercise
Habitual Sport Motivation Assessed by Sport Motivation Scale (SMS)
Time frame: Administered at baseline (pre-exercise) and post-exercise.
Attentional Control Assessed by Attentional Control Scale (ACS)
Time frame: Administered at baseline (pre-exercise) and post-exercise.
Perceived Recovery Assessed by Restoration Outcome Scale (ROS)
Time frame: Administered at baseline (pre-exercise) and post-exercise.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Jul 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. This study is not recruiting at the moment.
kun Zhu, Ph.D. principal investigator
Shanghai University of Sport
jiwei Chen, Ph.D. study chair
Shanghai University of Sport
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing HIIT in Indoor Environment, HIIT in Outdoor Athletic Track and HIIT in Green Park Environment in people with Sport Participation, run by Shanghai University of Sport at 1 site 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 8 inclusion and 15 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: finished, as of the sponsor's last update on 21 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in Salivary Cortisol Concentration (time frame: Administered at baseline (pre-exercise) and post-exercise.). 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 21 Jul 2026.