The Influence of Different Mood States and Emotions on the Physiologic, Metabolic, and Perceptual Responses to Feeding Before Exercise

Old Dominion University90 enrolled

Overview

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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

BASIC_SCIENCE

Masking

NONE

Enrollment

Conditions

Other Gastrointestinal Disorders Cramp, Abdominal

Interventions

Eligibility

Sex: ALLMin age: 18 YearsMax age: 55 YearsHealthy volunteers:

Medical Language ↔ Plain English

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

Outcomes

Primary Outcomes

Total exercise gastrointestinal symptom burden

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.

Time frame: Total GI symptom burden over a 30-minute jogging/running protocol.

Change in emotion ratings

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.

Time frame: Change in emotion ratings between immediately pre-video and immediately post-video.

Secondary Outcomes

Change over time in exercise heart rate

Heart rate will be measured with a chest-strap (Polar) monitor.

Time frame: Heart rate will be measured throughout a 30-minute treadmill jogging/running test. Change over time will be evaluated using mixed ANOVA.

Substrate use

Carbohydrate and fat oxidation rates will be estimated from the volumes of oxygen consumption and carbon dioxide production during exercise

Time frame: Carbohydrate and fat oxidation rates will be measured during the last 5 min of a 30-minute treadmill jogging/running test.

Feeling Scale

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.

Time frame: 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.

Fatigue Scale

The Fatigue Scale is Likert-type scale that ranges from 0 (Not Fatigued at All) to 10 (Total Fatigue).

Time frame: 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.

Heart rate post-video