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This Study Explores Whether Adding Natural Elements Like Plants and Sunlight to Indoor Gyms Makes Exercise Feel Easier, More Enjoyable, and Improves Performance. By Comparing Workouts in Nature-inspired and Plain Gym Settings, it Aims to Find Better Ways to Design Fitness Spaces in Cities.

Examining the Influence of Biophilic Design on College Students' Exercise Performance: A Crossover Study

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06928311
Enrollment
25
Registered
2025-04-15
Start date
2025-04-04
Completion date
2025-11-01
Last updated
2025-12-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Biophilic Environmental Design, Traditional Exercise Design

Keywords

Exercise, Biophilia, Environmental Design, Mood, Exercise Enjoyment

Brief summary

The goal of this observational study is to examine whether exercising in a biophilic environment - a space designed to include natural elements like real plants, simulated sunlight, nature sounds, and outdoor views - can improve exercise performance and enjoyment compared to a standard indoor gym environment in male college students age 18-25 who have regularly exercised prior. The main question it aims to answer is: Can biophilic design enhance the physical and mental benefits of indoor exercise? Researchers will compare the two environments to see if there is any changes in exercise performance and enjoyment for each participant. Participants will complete a treadmill fitness test in both settings to compare physical outcomes like maximal aerobic capacity, so the maximal amount of oxygen one can use during exercise, as well as perceived effort. After each treadmill test participants will be given surveys where they will be asked to evaluate their mood and enjoyment in that environment.

Interventions

OTHERExercise Environment

This intervention focused around the environmental design of the exercise room.

Sponsors

Colorado State University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
NONE

Intervention model description

Participants will be randomized into the biophilia group or the traditional group - that will be the environment that they start in. They will then go through a week wash out and then will go into the other environment for their exercise test.

Eligibility

Sex/Gender
MALE
Age
18 Years to 25 Years
Healthy volunteers
Yes

Inclusion criteria

* Men between 18 and 25 years

Exclusion criteria

* Resting BP greater than 140/90 * Resting HR greater than 100 bpm * BMI greater than 30 kg/m\^2 * inability to exercise at moderate to vigorous intensities * major illness/health complication in the past

Design outcomes

Primary

MeasureTime frameDescription
Maximal Aerobic Capacity (VO2Max)Testing Day 1This will be taken using a K5 metabolic cart measuring breath by breath
Rate of Perceived ExertionEvery minute during testing day 1Participants will rate their perceived exertion every minute during the test and recovery period on a 6-20 scale.
Mood and Enjoyment SurveyPost Test Day 1Participants will receive a paper survey on mood and enjoyment to complete.
VO2 Plateau DurationPost Test Day 1The time at which the participant is exercising at near maximal capacity.

Secondary

MeasureTime frameDescription
Heart RateDuring Testing Day 1 and 2Taken using a Garmin HR chest strap.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026