Sprint to Fitness: Effect of Outcome Expectations on Responses to Interval Exercise Training

NCT03162978 | Completed

• 1 other identifier: GFHNRC407
• Study Type: interventional
• Target: 66
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to research the effects of exercising at high intensities for short periods of time on exercise tolerance and motivation.

Conditions

Overweight; Obesity

Keywords

Exercise; behavior economics

Outcome Measures

Primary Outcomes (2)

• Change in relative reinforcing value (RRV) of physical activity

  RRV of physical activity will be assessed by evaluating the number of responses (mouse button presses) a subject is willing to complete to gain access to physical activity or a sedentary alternative.

  Week 0, Week 6, Week 10

• Changes in preference for intense physical activity and tolerance for exercise discomfort

  Changes in preference for intense physical activity and tolerance for exercise discomfort will be assessed by self-report questionnaire responses to the Preference for and Tolerance of the Intensity of Exercise Questionnaire (PRETIE-Q). The PRETIE-Q measures preference for high intensity vs. low intensity exercise and ability to persist or tolerate the discomfort associationed with intense exercise. The PRETIE-Q consists of two subscales: Preference for Exercise Intensity and Tolerance of Exercise Intensity. Each subscale has 8 items rated on a 5 point response scale (range 8 - 40). Higher scores indicate greater preference for intense exercise and/or greater tolerance for exercise discomfort. Total scale scores are not used. Scale averages will be used.

  Week 0, Week 6, Week 10

Secondary Outcomes (15)

• Change in minutes of physical activity, as assessed by activity tracker

  Week 0, Week 6, Week 10

• Changes in quadriceps and hamstring (thigh muscle) strength assessed separately on each leg

  Week 0, Week 6, Week 10

• Changes in aerobic fitness, as assessed using the Standardized Exponential Exercise Protocol (STEEP)

  Week 0, Week 6, Week 10

• Changes in anaerobic power, as during a Wingate anaerobic power exercise test

  Week 0, Week 6, Week 10

• Changes in fat mass as assessed by dual energy x-ray absorptiometry (DXA) scans

  Week 0, Week 6, Week 10

Study Arms (2)

HIIT + POE

EXPERIMENTAL

High-intensity interval training (HIIT) plus positive outcome expectations (POE) from participating in the exercise program.

Other: HIIT + POE

HIIT only

EXPERIMENTAL

High-intensity interval training (HIIT) only.

Other: HIIT only

Interventions

HIIT + POE OTHER

Subjects will participate in high-intensity interval training (HIIT) with an additional treatment component to increase positive outcome expectations (POE) of exercise.

HIIT + POE

HIIT only OTHER

Subjects will participate in high-intensity interval training (HIIT) only.

HIIT only

Eligibility Criteria

• Age: 18 Years - 40 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Body Mass Index of 25-35 kg/m2
• Sedentary (not regularly engaging in exercise more than once per week)
• Weight stable (have not lost or gained over 10 pounds of body weight in the past 3 months)

You may not qualify if:

• Taking any medications that affect energy expenditure or treat high blood pressure
• Tobacco use
• Pregnant or breastfeeding or plan to become pregnant in the next 3 months
• Have any medical conditions that prevent subject from safely exercising (e.g., orthopedic injuries, cardiovascular, liver, endocrine, or pulmonary diseases)
• Resting systolic blood pressure ≥ 140 mmHg
• Resting diastolic blood pressure ≥ 90 mmHg
• Non-fasting plasma glucose of ≥ 200 mg/dl

Sponsors & Collaborators

• USDA Grand Forks Human Nutrition Research Center: lead

Study Sites (1)

USDA Grand Forks Human Nutrition Research Center

Grand Forks, North Dakota, 58203, United States

Location

Related Links

• Grand Forks Human Nutrition Research Center Current Nutrition Studies

MeSH Terms

Conditions

Overweight; Obesity; Motor Activity

Condition Hierarchy (Ancestors)

Overnutrition; Nutrition Disorders; Nutritional and Metabolic Diseases; Body Weight; Signs and Symptoms; Pathological Conditions, Signs and Symptoms; Behavior

Study Officials

• James N Roemmich, PhD

  USDA Grand Forks Human Nutrition Research Center

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: FED
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 19, 2017
• First Posted: May 22, 2017
• Study Start: November 29, 2017
• Primary Completion: October 21, 2019
• Study Completion: October 21, 2019
• Last Updated: April 11, 2025

Record last verified: 2025-04

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)