Healthy Subjects (HS)NCT07114146
Physiological and Mood Changes After Walking in Green Spaces. A Comparison of Environments.
A study testing WALK THROUGH ENVIRONMENT A, WALK THROUGH ENVIRONMENT B and WALK THROUGH ENVIRONMENT C in people with Healthy Subjects (HS) and Forest Therapy, run by University of Vigo at 1 site in Spain.
Trial summary
Natural environments, and more specifically forest environments, have shown in the last decade a growing interest as a protection against the frenetic pace of life of a large part of the urban population in developed countries, where symptoms related to stress and anxiety are associated with an increasingly frequent… Read more about this study
- Who is it for?
- Ages 50 years and olderHealthy volunteers can take part
- Conditions the study is for
- Healthy Subjects (HS), Forest Therapy, Autonomic Nervous System Activity
- What is being tested?
- WALK THROUGH ENVIRONMENT A, WALK THROUGH ENVIRONMENT B and WALK THROUGH ENVIRONMENT C
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 16 participants
- Where
- 1 siteSpain
- Study dates
- 27 Jul 2025to 30 Oct 2025
- 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 50 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Those who have the ability and physical strength to walk 3 km in a calm manner without presenting or consciously suffering any type of adverse symptom.
Who cannot join
- Pregnancy
- History of severe physical or mental illness
- Drug addiction (including narcotic drugs and non-narcotics) habitual.
- High risk of fall
- Severe outdoor allergies
Trial locations and contacts
1 site in 1 country.
Spain1 site
Universidad de Vigo. Campus Pontevedra
Pontevedra, Pontevedra, 36005
About this study
Official title: Changes in Heart Rate Variability, Heart Rate, Blood Pressure, and Mood After Walking in Green Spaces. A Comparison of Environments With Healthy Adults.
Natural environments, and more specifically forest environments, have shown in the last decade a growing interest as a protection against the frenetic pace of life of a large part of the urban population in developed countries, where symptoms related to stress and anxiety are associated with an increasingly frequent state of sub-health.
The investigators propose to perform a randomized crossover study to analyze the effects of a walk in the forest on physiological and psychological markers related to autonomic nervous system activity in healthy adult. In addition, the investigators intend to observe whether the characteristics and perceptions of the forest environment could affect the results obtained in these markers using a scale created for this purpose.
Read more
Participants will be healthy adults with no history of serious physical or psychological illnesses, who will be exposed to three forest environments.
Physiological markers will be measured, including heart rate variability, which will be measured with a heart rate sensor that will monitor data throughout the exposure period, and heart rate and systolic and diastolic blood pressure, which will be measured with an automated device before and after each exposure. Before and after the walk through each of the forest environments, mood will be measured using the POMS scale, and our scale will be used to measure the perceived environmental quality after exposure to each environment.
In addition to the walk through the three forest environments, a control environment on an indoor treadmill will be used as a comparator, where distance, slope and walking speed will be adjusted to replicate the intensity and physical demand of the three outdoor routes.
The four interventions will be organized to create three different exposure sequences. Each exposure sequence will be randomly assigned to a different group. In turn, each participant will be randomly assigned to one of the three groups, so that all participants will undergo all four interventions in a repeated measures design.
Our hypothesis supports the idea that exposure to forest environments causes changes in physiological parameters and mood associated with positive regulation for health and for the autonomic nervous system in healthy adults compared to a neutral non-forest environment. As a second hypothesis, environmental characteristics as well as the perceived quality of the forest environment would be related to the magnitude of such changes associated with autonomic nervous system regulation and mood in healthy adults.
- Being tested
- WALK THROUGH ENVIRONMENT A, WALK THROUGH ENVIRONMENT B, WALK THROUGH ENVIRONMENT C, WALK THROUGH ENVIRONMENT D
- Keywords
- Forest therapy, Autonomic nervous system, Mood, forest
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
WALK THROUGH ENVIRONMENT AOther
A 3 km solo hike at a leisurely walking pace on a path that is easy to walk and has very little elevation gain. Located in Pontevedra Province.
WALK THROUGH ENVIRONMENT BOther
A 3 km solo hike at a leisurely pace on an easy walking trail with very little elevation gain. Located in the province of Pontevedra.
WALK THROUGH ENVIRONMENT COther
3 km solo hike at a leisurely pace on an easy trail with little elevation gain. Located in the province of Pontevedra.
WALK THROUGH ENVIRONMENT DOther
Individual 3 km treadmill walk in a closed room facing a wall without pictures or windows at a leisurely walking pace with no gradient. This room will be located on the Pontevedra University Campus.
| Study group | Role | What they receive |
|---|---|---|
| EXPOSURE IN SEQUENCE OF A-B-C-D ENVIRONMENTS | Experimental | Not described Receives: Other: WALK THROUGH ENVIRONMENT A; Other: WALK THROUGH ENVIRONMENT B; Other: WALK THROUGH ENVIRONMENT C; Other: WALK THROUGH ENVIRONMENT D |
| EXPOSURE IN SEQUENCE OF B-C-A-D ENVIRONMENTS | Experimental | Not described Receives: Other: WALK THROUGH ENVIRONMENT A; Other: WALK THROUGH ENVIRONMENT B; Other: WALK THROUGH ENVIRONMENT C; Other: WALK THROUGH ENVIRONMENT D |
| EXPOSURE IN SEQUENCE OF C-A-B-D ENVIRONMENTS | Experimental | Not described Receives: Other: WALK THROUGH ENVIRONMENT A; Other: WALK THROUGH ENVIRONMENT B; Other: WALK THROUGH ENVIRONMENT C; Other: WALK THROUGH ENVIRONMENT D |
What is being measured
The primary outcome is the main question the study is designed to answer.
CHANGES IN RR INTERVAL DURING FOREST EXPOSURE
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk.
The RR interval is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
Measured: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
CHANGES IN Root Mean Square of Successive Difference Root of RR Interval (RMSSD) DURING FOREST EXPOSURE
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk.
The RMSSD is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
Measured: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
CHANGES IN standard deviation of RR intervals (SDNN) DURING FOREST EXPOSURE
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk.
The SDNN is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
Measured: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
CHANGES IN High frequency component (HF) DURING FOREST EXPOSURE
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk.
The HF component is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
Measured: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
CHANGES IN Low frequency component (LF) DURING FOREST EXPOSURE
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk.
The LF component is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
Measured: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
CHANGES IN Sympathovagal balance (LF/HF) DURING FOREST EXPOSURE
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk.
The sympathovagal balance is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
Measured: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
CHANGES IN HEART RATE
We will measure this variable punctually on four occasions each of the 4 days of intervention. This data will be taken with an Automated Blood Pressure Device placed on the left arm with participants resting in a seated position. Each measurement is taken three times. Participants rest for 5 minutes before the measurements.
Measured: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places: Baseline (min 0), 5 minutes pre walk, 5 minutes post walk and after the period of time corresponding to the vehicle journey.
CHANGES IN SYSTOLIC BLOOD PRESSURE
We will measure this variable punctually on four occasions each of the 4 days of intervention. This data will be taken with an Automated Blood Pressure Device placed on the left arm with participants resting in a seated position. Each measurement is taken three times. Participants rest for 5 minutes before the measurements.
Measured: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places: Baseline (min 0), 5 minutes pre walk, 5 minutes post walk and after the period of time corresponding to the vehicle journey.
CHANGES IN DIASTOLIC BLOOD PRESSURE
We will measure this variable punctually on four occasions each of the 4 days of intervention. This data will be taken with an Automated Blood Pressure Device placed on the left arm with participants resting in a seated position. Each measurement is taken three times. Participants rest for 5 minutes before the measurements.
Measured: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places: Baseline (min 0), 5 minutes pre walk, 5 minutes post walk and after the period of time corresponding to the vehicle journey.
CHANGES IN THE PROFILE OF MOOD STATES. SHORT SPANISH VERSION
We will measure this variable punctually on two occasions each of the 4 days of intervention. The POMS is a questionnaire for the measurement of mood. POMS is a reliable and valid psychometric instrument that includes 30 adjectives in this Spanish short versions, rated on a scale of 0-4 (0 = none; 4 = very strong), which can be integrated into six factors, four of these factors are negative: Anger, Fatigue, Tension and Depressed State; and two are positive: Vigour and Friendship.
Measured: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places: Baseline (min 0) and post walk immediately after finishing physiological measurements
CHANGES IN TOTAL MOOD DISTURBANCE
We will measure this variable punctually on two occasions each of the 4 days of intervention. Total Mood Disturbance TMD It is a score that measures a person's emotional distress, psychological distress or subjective well-being. It can be obtained from POMS results; it is calculated from the sum of all the values obtained for each factor, with the exception of the two positive factors, which are subtracted.
Measured: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places: Baseline (min 0) and post walk immediately after finishing physiological measurements
SCALE OF PERCEIVED ENVIRONMENTAL QUALITY OF THE FOREST ENVIRONMENT
We will measure this variable once each of the 4 days of intervention. We will use the "Scale of perceived environmental quality of the forest environment", a 41-question recording method to determine the quality perceived by the respondent of a given forest environment.
It is configured by means of a series of questions in which the person quantitatively rates certain characteristics of the tree stands according to his or her own criteria. 39 of the questions use a 5-point Likert scale in which each question is rated from 1 to 5, with 1 = Not at all, and 5 = Very much. Questions 40 and 41 are called criterion questions where on a scale of 1 to 10 the person responds according to his or her criteria 1 = very low/very little and 10 = outstanding.
Measured: This measurement is performed on each of the three days when subjects take a walk in each of the three outdoor study environments: Post walk, immediately after completing the physiological measurements.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Aug 2025
- Study start27 Jul 2025
- Primary completion22 Sep 2025
- Study completion30 Oct 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Healthy Subjects (HS)Studies 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
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind
- Who is masked
- Care provider
- Enrolment
- 16 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Vigo
- Sponsor type
- University, hospital or other
- Collaborators
- Plan social Ence
- Responsible party
- Principal investigator, Ana Gil Iglesias, Universidade de Vigo
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07114146
- Sponsor's protocol ID
- ETICA-ULE-087-2025
- Status last verified
- Apr 2026
- First submitted
- 28 Jul 2025
- Last updated
- 23 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 23 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Changes in Heart Rate Variability, Heart Rate, Blood Pressure, and Mood After Walking in Green Spaces. A Comparison of Environments With Healthy Adults.
- ClinicalTrials.gov ID
- NCT07114146
- Acronym / sponsor ID
- ETICA-ULE-087-2025
- Keywords
- Forest therapy, Autonomic nervous system, Mood, forest
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 16 participants (actual)
- Lead sponsor
- University of VigoUniversity, hospital or other
- Collaborators
- Plan social Ence
- Study start
- 27 Jul 2025 (actual)
- Primary completion
- 22 Sep 2025 (actual)
- Study completion
- 30 Oct 2025 (actual)
- First posted
- 11 Aug 2025 (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.
Natural environments, and more specifically forest environments, have shown in the last decade a growing interest as a protection against the frenetic pace of life of a large part of the urban population in developed countries, where symptoms related to stress and anxiety are associated with an increasingly frequent state of sub-health.
The investigators propose to perform a randomized crossover study to analyze the effects of a walk in the forest on physiological and psychological markers related to autonomic nervous system activity in healthy adult. In addition, the investigators intend to observe whether the characteristics and perceptions of the forest environment could affect the results obtained in these markers using a scale created for this purpose.
Participants will be healthy adults with no history of serious physical or psychological illnesses, who will be exposed to three forest environments.
Physiological markers will be measured, including heart rate variability, which will be measured with a heart rate sensor that will monitor data throughout the exposure period, and heart rate and systolic and diastolic blood pressure, which will be measured with an automated device before and after each exposure. Before and after the walk through each of the forest environments, mood will be measured using the POMS scale, and our scale will be used to measure the perceived environmental quality after exposure to each environment.
In addition to the walk through the three forest environments, a control environment on an indoor treadmill will be used as a comparator, where distance, slope and walking speed will be adjusted to replicate the intensity and physical demand of the three outdoor routes.
The four interventions will be organized to create three different exposure sequences. Each exposure sequence will be randomly assigned to a different group. In turn, each participant will be randomly assigned to one of the three groups, so that all participants will undergo all four interventions in a repeated measures design.
Our hypothesis supports the idea that exposure to forest environments causes changes in physiological parameters and mood associated with positive regulation for health and for the autonomic nervous system in healthy adults compared to a neutral non-forest environment. As a second hypothesis, environmental characteristics as well as the perceived quality of the forest environment would be related to the magnitude of such changes associated with autonomic nervous system regulation and mood in healthy adults.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (care provider)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| EXPOSURE IN SEQUENCE OF A-B-C-D ENVIRONMENTS | Experimental | Other: WALK THROUGH ENVIRONMENT A, Other: WALK THROUGH ENVIRONMENT B, Other: WALK THROUGH ENVIRONMENT C, Other: WALK THROUGH ENVIRONMENT D |
| EXPOSURE IN SEQUENCE OF B-C-A-D ENVIRONMENTS | Experimental | Other: WALK THROUGH ENVIRONMENT A, Other: WALK THROUGH ENVIRONMENT B, Other: WALK THROUGH ENVIRONMENT C, Other: WALK THROUGH ENVIRONMENT D |
| EXPOSURE IN SEQUENCE OF C-A-B-D ENVIRONMENTS | Experimental | Other: WALK THROUGH ENVIRONMENT A, Other: WALK THROUGH ENVIRONMENT B, Other: WALK THROUGH ENVIRONMENT C, Other: WALK THROUGH ENVIRONMENT D |
Who may qualify
- Ages
- 50 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Those who have the ability and physical strength to walk 3 km in a calm manner without presenting or consciously suffering any type of adverse symptom.
Key exclusion criteria (5 listed)
- Pregnancy
- History of severe physical or mental illness
- Drug addiction (including narcotic drugs and non-narcotics) habitual.
- High risk of fall
- Severe outdoor allergies
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 |
|---|---|---|
| WALK THROUGH ENVIRONMENT AA 3 km solo hike at a leisurely walking pace on a path that is easy to walk and has very little elevation gain. Located in Pontevedra Province. | Other | EXPOSURE IN SEQUENCE OF A-B-C-D ENVIRONMENTS, EXPOSURE IN SEQUENCE OF B-C-A-D ENVIRONMENTS, EXPOSURE IN SEQUENCE OF C-A-B-D ENVIRONMENTS |
| WALK THROUGH ENVIRONMENT BA 3 km solo hike at a leisurely pace on an easy walking trail with very little elevation gain. Located in the province of Pontevedra. | Other | EXPOSURE IN SEQUENCE OF A-B-C-D ENVIRONMENTS, EXPOSURE IN SEQUENCE OF B-C-A-D ENVIRONMENTS, EXPOSURE IN SEQUENCE OF C-A-B-D ENVIRONMENTS |
| WALK THROUGH ENVIRONMENT C3 km solo hike at a leisurely pace on an easy trail with little elevation gain. Located in the province of Pontevedra. | Other | EXPOSURE IN SEQUENCE OF A-B-C-D ENVIRONMENTS, EXPOSURE IN SEQUENCE OF B-C-A-D ENVIRONMENTS, EXPOSURE IN SEQUENCE OF C-A-B-D ENVIRONMENTS |
| WALK THROUGH ENVIRONMENT DIndividual 3 km treadmill walk in a closed room facing a wall without pictures or windows at a leisurely walking pace with no gradient. This room will be located on the Pontevedra University Campus. | Other | EXPOSURE IN SEQUENCE OF A-B-C-D ENVIRONMENTS, EXPOSURE IN SEQUENCE OF B-C-A-D ENVIRONMENTS, EXPOSURE IN SEQUENCE OF C-A-B-D ENVIRONMENTS |
Primary outcome
CHANGES IN RR INTERVAL DURING FOREST EXPOSURE
Time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk. The RR interval is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
CHANGES IN Root Mean Square of Successive Difference Root of RR Interval (RMSSD) DURING FOREST EXPOSURE
Time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk. The RMSSD is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
CHANGES IN standard deviation of RR intervals (SDNN) DURING FOREST EXPOSURE
Time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk. The SDNN is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
CHANGES IN High frequency component (HF) DURING FOREST EXPOSURE
Time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk. The HF component is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
CHANGES IN Low frequency component (LF) DURING FOREST EXPOSURE
Time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk. The LF component is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
CHANGES IN Sympathovagal balance (LF/HF) DURING FOREST EXPOSURE
Time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.
We will measure this variable continuously from 5 minutes before the start of each walk to 5 minutes after the end of each walk. The sympathovagal balance is a parameter related to Heart Rate Variability, its analysis is commonly used to evaluate the functioning of cardiac autonomic regulation.
CHANGES IN HEART RATE
Time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places: Baseline (min 0), 5 minutes pre walk, 5 minutes post walk and after the period of time corresponding to the vehicle journey.
We will measure this variable punctually on four occasions each of the 4 days of intervention. This data will be taken with an Automated Blood Pressure Device placed on the left arm with participants resting in a seated position. Each measurement is taken three times. Participants rest for 5 minutes before the measurements.
CHANGES IN SYSTOLIC BLOOD PRESSURE
Time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places: Baseline (min 0), 5 minutes pre walk, 5 minutes post walk and after the period of time corresponding to the vehicle journey.
We will measure this variable punctually on four occasions each of the 4 days of intervention. This data will be taken with an Automated Blood Pressure Device placed on the left arm with participants resting in a seated position. Each measurement is taken three times. Participants rest for 5 minutes before the measurements.
CHANGES IN DIASTOLIC BLOOD PRESSURE
Time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places: Baseline (min 0), 5 minutes pre walk, 5 minutes post walk and after the period of time corresponding to the vehicle journey.
We will measure this variable punctually on four occasions each of the 4 days of intervention. This data will be taken with an Automated Blood Pressure Device placed on the left arm with participants resting in a seated position. Each measurement is taken three times. Participants rest for 5 minutes before the measurements.
CHANGES IN THE PROFILE OF MOOD STATES. SHORT SPANISH VERSION
Time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places: Baseline (min 0) and post walk immediately after finishing physiological measurements
We will measure this variable punctually on two occasions each of the 4 days of intervention. The POMS is a questionnaire for the measurement of mood. POMS is a reliable and valid psychometric instrument that includes 30 adjectives in this Spanish short versions, rated on a scale of 0-4 (0 = none; 4 = very strong), which can be integrated into six factors, four of these factors are negative: Anger, Fatigue, Tension and Depressed State; and two are positive: Vigour and Friendship.
CHANGES IN TOTAL MOOD DISTURBANCE
Time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places: Baseline (min 0) and post walk immediately after finishing physiological measurements
We will measure this variable punctually on two occasions each of the 4 days of intervention. Total Mood Disturbance TMD It is a score that measures a person's emotional distress, psychological distress or subjective well-being. It can be obtained from POMS results; it is calculated from the sum of all the values obtained for each factor, with the exception of the two positive factors, which are subtracted.
SCALE OF PERCEIVED ENVIRONMENTAL QUALITY OF THE FOREST ENVIRONMENT
Time frame: This measurement is performed on each of the three days when subjects take a walk in each of the three outdoor study environments: Post walk, immediately after completing the physiological measurements.
We will measure this variable once each of the 4 days of intervention. We will use the "Scale of perceived environmental quality of the forest environment", a 41-question recording method to determine the quality perceived by the respondent of a given forest environment. It is configured by means of a series of questions in which the person quantitatively rates certain characteristics of the tree stands according to his or her own criteria. 39 of the questions use a 5-point Likert scale in which each question is rated from 1 to 5, with 1 = Not at all, and 5 = Very much. Questions 40 and 41 are called criterion questions where on a scale of 1 to 10 the person responds according to his or her criteria 1 = very low/very little and 10 = outstanding.
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 23 Apr 2026.
- Individual participant dataSharing planned: Undecided
Related trials for Healthy Subjects (HS)
Recruiting
Methodological Study of Exercise and Hypoxic Conditions in Healthy Subjects
Healthy Subjects (HS), Exercise
Recruiting
Reactive Balance Training in Augmented Reality for Older Adults
Healthy Subjects (HS)
Active, not recruitingObservational study
Exploring the Olfactory Mucosa, Blood and Urine for the Identification of Early Biomarkers of Parkinson's Disease, Atypical Parkinsonisms and Neurocognitive Disorders Due to Lewy Body Disease
Parkinson Disease, MSA - Multiple System Atrophy
Recruiting
Self-initiated Perturbation-based Training in Older Adults
Healthy Subjects (HS)
Not yet recruiting
Effect of Continuous Nebulisation of Isotonic Saline Solution Combined With Heated Humidification on Mucociliary Clearance in Healthy Subjects
Healthy Subjects (HS)
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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing WALK THROUGH ENVIRONMENT A, WALK THROUGH ENVIRONMENT B and WALK THROUGH ENVIRONMENT C in people with Healthy Subjects (HS) and Forest Therapy, run by University of Vigo at 1 site in Spain.
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 1 inclusion and 5 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 23 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 1 site in Spain. 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?
CHANGES IN RR INTERVAL DURING FOREST EXPOSURE (time frame: This measurement is carried out each of the four days in which the subjects take a walk in each of the four study places. From 5 minutes before the start of the 3 km walk until 5 minutes after the end of the walk.). The study lists 12 primary outcomes in all. 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 23 Apr 2026.