No Placebo Group
Every participant receives an active treatment — no one gets a placebo.
Ready to participate?
Review the details below, then apply to join this clinical trial.
At a Glance
Age
25 – 64
Sex
Any
Study type
Interventional
Purpose
Basic Science
Participants needed
216 (estimated)
Sponsor
University of Minnesota · Other
Who this trial is looking for
This trial is looking for adults with prediabetes to compare the effects of walking in nature versus urban areas. Participants will walk for 150 minutes each week for six weeks in both settings and visit the clinic several times for health checks and saliva samples.
Are You a Good Fit for This Trial?
Rules you outType 1 diabetesType 2 diabetesCardiovascular disease
You may be able to join if
I am 25 to 64 years old.
I have been diagnosed with prediabetes in the past year.
I am overweight or obese.
I exercise less than 100 minutes a week.
I have no major health issues that prevent me from exercising.
I have a stable weight for the last 3 months.
I can download and use the Garmin Connect app.
I can speak and understand English.
You may not be able to join if
I am younger than 25 or older than 64.
I have a BMI less than 20 or more than 42.
I have diabetes or use diabetes medications.
I exercise more than 100 minutes a week.
I have had a heart attack or stroke.
I recently had major surgery or am planning one.
I am currently pregnant, breastfeeding, or planning to become pregnant.
I currently smoke or have quit in the last six months.
Summarized in plain language from this trial's official eligibility criteria.
The full criteria are further down this page — only the research team can
confirm whether you qualify.
Think this trial could be right for you?
Answer three quick questions written from this study's own rules to see if you may qualify. No account needed to find out.
The goal of this randomized crossover trial is to compare the differences in psychological and physiological effects of walking in two different outdoor environments (urban/suburban commercial environments vs. urban/suburban nature areas/preserves) in adults with prediabetes. The main questions it aims to answer are:
* Do psychological measures of stress, anxiety, and affect improve more in one t…
The goal of this randomized crossover trial is to compare the differences in psychological and physiological effects of walking in two different outdoor environments (urban/suburban commercial environments vs. urban/suburban nature areas/preserves) in adults with prediabetes. The main questions it aims to answer are:
* Do psychological measures of stress, anxiety, and affect improve more in one type of outdoor environment over the other?
* Do physiological measures of stress improve more in one type of outdoor environment over the other?
As this is a crossover trial, participants will serve as their own controls. Researchers will compare both the psychological and physiological effects walking in the two types of outdoor environments.
Participants will:
* Walk 150-minutes per week for six weeks in each of the two outdoor conditions.
* Visit the clinic four times, including before and after each six-week walking period.
* Collect saliva samples immediately proceeding or following the four clinic visits.
* Return to their pre-study level of physical activity for a 5-week washout period between each of the two walking interventions.
Trial Locations
Loading…
Loading trial locations…
Facility
City
State
Country
Status
Eligibility Criteria
Inclusion Criteria:
* 25-64 years old.
* Classified as overweight or obese with BMI 20.0-39.9 kg/m2 per self-report and a BMI of 20.0- 41.9 kg/m2 upon actual measure.
* Documentation\* of a PreD diagnosis within one year of enrollment by physician or primary care provider based on lab tests showing…
Inclusion Criteria:
* 25-64 years old.
* Classified as overweight or obese with BMI 20.0-39.9 kg/m2 per self-report and a BMI of 20.0- 41.9 kg/m2 upon actual measure.
* Documentation\* of a PreD diagnosis within one year of enrollment by physician or primary care provider based on lab tests showing a fasted blood glucose of 100-125 mg/dL, a 2-hour oral glucose tolerance test of 140-199 mg/dL, or an HbA1c level of 5.7%-6.49%271; OR a study screening lab value of HbA1C within the aforementioned range.
* Currently engaged in ≤100 min/week of moderate to vigorous exercise -confirmed via a 7-day activity recall.
* No exercise contraindications as assessed by the Physical Activity Readiness Questionnaire (PAR-Q) -this Questionnaire involves seven "yes" or "no" questions regarding an individual's health status. Answering "yes" to any one of these questions may require a prospective participant to acquire a written doctor's note stating they can safely participate in the trial's exercise intervention. The participant would not be enrolled until this doctor's note is received.
* Stable weight over the last 3 months (less than 10% change).
* Not currently pregnant, planning to become pregnant, or currently breastfeeding.
* Willing to maintain current dietary and exercise habits, aside from any changes to be made per the study exercise protocol.
* Must own a smartphone and be willing and able to download the Garmin Connect app
* Ability to speak and understand English.
* Any level of income
* Any race/ethnicity
Exclusion Criteria:
* Individuals \<25 or \>64: younger individuals may have not yet reached physiological maturity and in whom PreD prevalence is low; older individuals are more likely to have contraindications to PA and other comorbidities.
* BMI \<20 or ≥42.
* Individuals with an HbA1c level \<5.7% or \>6.4%.
* Currently engaged in \>100 min/wk of PA.
* Individuals with contraindications to exercise participation as indicated by the PAR-Q.
* A self-reported physical/mental disability that would prevent them from being able to adhere to the intervention.
* Past or current diagnosis of Diabetes (Type 1, 1.5 or 2) or use of diabetic medications (e.g. medications to control blood sugar)
* Any history of a cardiovascular disease event (e.g. heart attack, ablation, pacemaker, stroke)
* Current treatment for cancer or heart disease (lipid and hypertensive medications acceptable but will be tracked closely).
* Any change within the last 3 months, or anticipated changes, of any medications that would affect study outcomes (e.g. medications for lipids, blood pressure, anxiety, depression)
* The use of any medication that significantly interferes with the autonomic nervous system
* Current tobacco or nicotine users, or those who have quit within the last six months
* Excessive alcohol (on average\>1 drinks/day for women and \>2 drinks/day for men) or excessive recreational drug use (reported usage of once a week or more).
* Unstable weight over the last three months (\>10% change).
* Those with major surgery planned or recent history of bariatric surgery (within last 2 years) or a history of other medical interventions that would interfere with study outcomes
* Currently within one-year postpartum, currently pregnant, or planning to become pregnant during the study period.
* Currently breastfeeding.
* Unwilling to comply with study randomization procedures.
* Unwilling to maintain current dietary and exercise habits, aside from any changes to be made per the study exercise protocol.
* Current participation in another interventional clinical trial.
* Previous randomization in this study.
Picking one helps us show the most relevant trials first.
Your results are loading in the background — you can
change this any time from the results page.
Set your location to continue
Find My Trials uses your location to surface clinical trials near you.
Add your city or zip code to your profile and try again.