Clinical Research Directory

Running Environments on Physiological Responses, Emotion, Motivation, and Attention

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.

High-Intensity Interval Training Across Exercise Environments: Acute Effects on Physiological Stress, Cardiovascular Responses, Executive Function, and Psychological Experience

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： 1. 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)? 2. 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.

TPCT Underwater Rugby Women

This randomized controlled trial evaluates whether adding a short, structured team-reflection protocol (Tactical Programme for Critical Thinking, TPCT) to regular elite women's underwater rugby training improves tactical efficiency. Both groups complete the same training content and time; the TPCT group uses brief guided discussion during recovery intervals, while the control group uses the same time for passive recovery. Tactical efficiency is assessed using video-recorded 3v3 scrimmages coded with the RUSTAC checklist at baseline and after 6 weeks.