NCT07494552

Brief Summary

The goal of this clinical trial is to learn how different running environments affect physiological responses, emotional regulation, exercise motivation, and attentional control in healthy college students. The main questions it aims to answer are: How do different running environments (indoor treadmill, outdoor road, and outdoor grass) affect physiological stress and recovery, such as heart rate variability, blood pressure, cortisol, and blood lactate levels? Are there differences in subjective emotional experiences, perceived recovery, and exercise motivation when running in natural versus artificial environments? Does the running environment influence post-exercise cognitive performance, specifically inhibitory control and sustained attention? Researchers will compare indoor treadmill running, outdoor road running, and outdoor grass running to see if natural environments provide greater benefits for stress relief, mood improvement, and cognitive enhancement. Participants will: Attend three separate 70-minute experimental sessions (one for each environment) with at least 48 hours between sessions. Complete baseline physiological measurements (HRV, blood pressure, saliva, and blood samples), psychological questionnaires, and computerized cognitive tasks. Complete a 30-minute moderate-intensity running session in the randomly assigned environment while wearing a heart rate monitor. Repeat the physiological measurements, psychological questionnaires, and cognitive tasks immediately and 10 minutes after the running session.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
30

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Apr 2026

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 14, 2026

Completed
13 days until next milestone

First Posted

Study publicly available on registry

March 27, 2026

Completed
14 days until next milestone

Study Start

First participant enrolled

April 10, 2026

Completed
2 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 10, 2026

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

June 10, 2026

Completed
Last Updated

March 27, 2026

Status Verified

March 1, 2026

Enrollment Period

2 months

First QC Date

March 14, 2026

Last Update Submit

March 20, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change in Salivary Cortisol Concentration

    Salivary cortisol concentration will be measured to evaluate the acute endocrine and physiological stress response to different running environments.

    Baseline (pre-exercise) and 20 minutes post-exercise.

Secondary Outcomes (13)

  • Change in Heart Rate Variability (HRV)

    Baseline (pre-exercise), immediately post-exercise, 5 minutes post-exercise, 10 minutes post-exercise, and 20 minutes post-exercise.

  • Change in Systolic and Diastolic Blood Pressure

    Baseline (pre-exercise), immediately post-exercise, 5 minutes post-exercise, 10 minutes post-exercise, and 20 minutes post-exercise.

  • Change in Blood Lactate Concentration

    Baseline (pre-exercise) and immediately post-exercise.

  • Inhibitory Control Assessed by the Stroop Task: Reaction Time

    Baseline (pre-exercise) and 20 minutes post-exercise.

  • Response Inhibition Assessed by the Go/No-Go Task: Reaction Time

    Baseline (pre-exercise) and 20 minutes post-exercise.

  • +8 more secondary outcomes

Study Arms (3)

Indoor Treadmill Running

EXPERIMENTAL

Participants will complete a 20-minute moderate-intensity running session on a treadmill in a controlled indoor sports venue.

Other: Indoor Treadmill Running Session

Outdoor Road Running

EXPERIMENTAL

Participants will complete a 20-minute moderate-intensity running session on a standard outdoor campus athletic track.

Other: Outdoor Road Running Session

Outdoor Grass Running

EXPERIMENTAL

Participants will complete a 20-minute moderate-intensity running session on a natural campus lawn/grass area.

Other: Outdoor Grass Running Session

Interventions

20 minutes of moderate-intensity running on an indoor treadmill. Exercise intensity is monitored and controlled using heart rate devices to maintain a consistent moderate level.

Indoor Treadmill Running

20 minutes of moderate-intensity running on an outdoor athletic track (paved surface).

Outdoor Road Running

20 minutes of moderate-intensity running on a natural grass surface.

Outdoor Grass Running

Eligibility Criteria

Age18 Years - 25 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • 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 injuries, capable of safely completing moderate-intensity running (treadmill, outdoor road, and grass running).
  • No recent major life events affecting physiological or psychological status (e.g., severe insomnia, anxiety, depression, or extreme fatigue).
  • No use of medications or supplements affecting heart rate, blood pressure, mood, or attention within the past week.
  • Normal or corrected-to-normal vision, capable of completing computerized cognitive tasks (e.g., Stroop, Go/No-Go, PVT).
  • Able to comprehend and truthfully complete psychological scales.
  • Voluntary participation and signed informed consent form.

You may not qualify if:

  • Current or past diagnosis of severe cardiovascular disease (e.g., myocardial infarction, severe arrhythmia, uncontrolled hypertension).
  • Severe respiratory disease (e.g., severe asthma, COPD) or recent acute respiratory infection within the past month.
  • History of neurological disease or brain injury (e.g., epilepsy, recent concussion) affecting safety or cognitive task performance.
  • Endocrine or metabolic diseases (e.g., uncontrolled thyroid disease, severe diabetes) affecting cortisol or metabolic measurements.
  • Recent diagnosis or psychiatric treatment for severe psychological disorders within the past month.
  • Use of drugs or supplements affecting heart rate, blood pressure, cortisol, or attention within the past 7 days.
  • Currently pregnant or lactating.
  • Acute illness within the past 48 hours (e.g., fever, acute gastroenteritis).
  • Severe bleeding tendencies, blood disorders, or contraindications to blood/saliva sampling.
  • Recent substance use interference, such as heavy drinking or substance dependence within the past 2 weeks.
  • Inability to meet pre-experiment control requirements (e.g., avoiding caffeine, tobacco, or heavy exercise).
  • Inability to complete computerized tasks due to poor vision or lack of familiarity with keyboard/mouse.
  • Acute or chronic injuries hindering the safe completion of running intervention (e.g., recent lower limb injury).
  • Participation in similar HIT or environmental intervention studies within the past 3 months.
  • Unable to understand research procedures or unwilling to sign the informed consent form.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Shanghai University of Sport

Shanghai, Shanghai Municipality, 200438, China

Location

Study Officials

  • Kun Zhu, Ph.D.

    Shanghai University of Sport

    PRINCIPAL INVESTIGATOR
  • Jiwei Chen, Ph.D.

    Shanghai University of Sport

    STUDY CHAIR
  • Wenqian Du

    Shanghai University of Sport

    STUDY DIRECTOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
BASIC SCIENCE
Intervention Model
CROSSOVER
Model Details: Participants will complete three experimental running sessions (indoor treadmill, outdoor road, and outdoor grass) in a randomized, counterbalanced order. A minimum washout period of 48 hours is strictly enforced between each session to eliminate carry-over effects.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

March 14, 2026

First Posted

March 27, 2026

Study Start

April 10, 2026

Primary Completion

June 10, 2026

Study Completion

June 10, 2026

Last Updated

March 27, 2026

Record last verified: 2026-03

Locations