Cramp, Abdominal, Other Gastrointestinal Disorders
Conditions
Brief summary
Many athletes anecdotally report modifying their nutritional intake before competition in order to avoid gut problems, but no studies have evaluated whether emotional state impacts tolerance to pre-exercise feeding. Therefore, this study will use movie clips (stressful, horror, and funny/amusing) to induce different mood states and emotions, which will be followed by ingestion of food before endurance running on a treadmill. In addition, metabolic and physiologic responses to mood induction will be evaluated.
Interventions
OTHERFunny/Amusing Video Clips
Participants watch 5-7 minutes of video clips that are funny/amusing in nature
OTHERHorror/Scary Video Clips
Participants watch 5-7 minutes of video clips that are scary in nature
OTHERThrilling/Suspenseful Video Clips
Participants watch 5-7 minutes of video clips that are thrilling/suspenseful in nature
Sponsors
Old Dominion University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes
Inclusion criteria
1. Aged 18 to 55 years 2. Able to run for 30 min at a moderate-to-vigorous intensity without stopping 3. No diagnosis or signs/symptoms of cardiovascular disease (CVD) or metabolic disorders 4. Currently physically active (at least 3 days/week of exercise at a moderate or higher intensity) 5. No visual or hearing impairments interfering with ability to see and hear video clips 6. No allergies to ingredients in Boost drink
Exclusion criteria
1. Aged \<18 or \>55 years 2. Unable to run for 30 min at a moderate-to-vigorous intensity without stopping 3. A diagnosis or signs/symptoms of CVD or metabolic disorders 4. Currently physically inactive (\< 3 days/week of exercise at a moderate or higher intensity) 5. Visual or hearing impairments interfering with ability to see and hear video clips 6. Allergies to ingredients in Boost drink
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Total exercise gastrointestinal symptom burden | Total GI symptom burden over a 30-minute jogging/running protocol. | The severity of several gastrointestinal symptoms will be assessed on a validated 0-10 scale. Ratings will be collected every 5 minutes during a 30-minute treadmill jogging/running test. Scores from every 5-minute collection will be summed to calculate total GI symptom scores. |
| Change in emotion ratings | Change in emotion ratings between immediately pre-video and immediately post-video. | Anxiety, fear, happiness, amusement, disgust, sadness, and anger on a 0-9 Likert scale. Emotions will be assessed before watching video clips and immediately after watching video clips. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change over time in exercise heart rate | Heart rate will be measured throughout a 30-minute treadmill jogging/running test. Change over time will be evaluated using mixed ANOVA. | Heart rate will be measured with a chest-strap (Polar) monitor. |
| Substrate use | Carbohydrate and fat oxidation rates will be measured during the last 5 min of a 30-minute treadmill jogging/running test. | Carbohydrate and fat oxidation rates will be estimated from the volumes of oxygen consumption and carbon dioxide production during exercise |
| Heart rate post-video | Heart rate will be recorded immediately after videos are viewed. | Heart rate will be measured with a chest-strap (Polar) monitor. |
| Fatigue Scale | Ratings on the Fatigue Scale will be measured at rest before watching video clips and throughout (every 5 min) a subsequent 30-minute treadmill jogging/running test. | The Fatigue Scale is Likert-type scale that ranges from 0 (Not Fatigued at All) to 10 (Total Fatigue). |
| Feeling Scale | Ratings on the Feeling Scale will be measured at rest before watching video clips and throughout (every 5 min) a subsequent 30-minute treadmill jogging/running test. | The Feeling Scale is a bipolar numerical rating scale ranging from -5 to +5, with descriptors of very bad at -5, neutral at 0, and very good at +5. |
Countries
United States
Contacts
Primary ContactPatrick Wilson, PhD
Outcome results
None listed