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Test of an Intervention to Increase Physical Activity Among School Children

University of California Irvine (UCI) logo

University of California Irvine (UCI)

Status

Completed

Conditions

Obesity

Treatments

Behavioral: feeling states exercise intervention

Study type

Interventional

Funder types

Other
NIH

Identifiers

NCT01876602
DK088800
R01DK088800 (U.S. NIH Grant/Contract)

Details and patient eligibility

About

The specific aims of this study are to: 1) evaluate the impact of a novel intervention delivered via school-based physical education (PE) on adolescents who have a high sensitivity to exercise-induced negative affect; 2) determine whether adolescents' tendency to feel uncomfortable during exercise is a stable trait that persists even in the face of an intervention; and 3) compare and contrast three alternative methods of measuring adolescents' sensitivity to exercise-induced affect.

Healthy middle-school students who do not participate in team or individual competitive sports will be recruited and assessed to determine their existing predisposition toward exercise (i.e., "reluctant exercisers" and "latent exercisers"). The assessment will be conducted using three methods that have been used to measure individuals' propensity to experience positive affect in the face of a stimulus: 1) a pencil-and-paper assessment that measures tendency to respond to a challenge with positive affect; 2) electroencephalogram (EEG) to ascertain frontal cortical asymmetry; and 3) empirically assessed affective response to a standardized exercise task. Reluctant and latent exercisers will be assigned in equal numbers to one of two conditions. One condition will implement a PE-based intervention that differs from the traditional approach in that students will be instructed to exercise at an intensity that has been determined to elicit positive affect in that individual (based on baseline testing). In the other condition, students will be instructed to exercise at an intensity derived from standard formulas typically used in exercise prescriptions. It is hypothesized that the non-traditional approach will increase reluctant exercisers' enjoyment of PE and also their level of participation in physical activity outside of PE. The latter will be determined using portable monitors (accelerometers) worn at baseline, after the intervention, and again 1 year after the end of the intervention.

Full description

This project addresses the current epidemic in obesity and physical inactivity among adolescents in the United States. The goal of the research is to develop effective ways of encouraging adolescents to become and remain physically active. In particular, this project is concerned with identifying adolescents who are reluctant to exercise because they have a high sensitivity to unpleasant feelings while exercising at higher intensities. Once identified, these adolescents can be targeted with an intervention that is designed to teach them to exercise at an intensity level that will generate pleasant feelings and therefore make it more likely that they will seek out opportunities to be physically active. The specific aims of this study are to: 1) evaluate the impact of a novel intervention delivered via school-based physical education (PE) on adolescents who have a high sensitivity to exercise-induced negative affect; 2) determine whether adolescents' tendency to feel uncomfortable during exercise is a stable trait that persists even in the face of an intervention; and 3) compare and contrast three alternative methods of measuring adolescents' sensitivity to exercise-induced affect.

Healthy middle-school students who do not participate in team or individual competitive sports will be recruited and assessed to determine their existing predisposition toward exercise (i.e., "reluctant exercisers" and "latent exercisers"). The assessment will be conducted using three methods that have been used to measure individuals' propensity to experience positive affect in the face of a stimulus: 1) a pencil-and-paper assessment that measures tendency to respond to a challenge with positive affect; 2) electroencephalogram (EEG) to ascertain frontal cortical asymmetry; and 3) empirically assessed affective response to a standardized exercise task. Reluctant and latent exercisers will be assigned in equal numbers to one of two conditions. One condition will implement a PE-based intervention that differs from the traditional approach in that students will be instructed to exercise at an intensity that has been determined to elicit positive affect in that individual (based on baseline testing). In the other condition, students will be instructed to exercise at an intensity derived from standard formulas typically used in exercise prescriptions. It is hypothesized that the non-traditional approach will increase reluctant exercisers' enjoyment of PE and also their level of participation in physical activity outside of PE. The latter will be determined using portable monitors (accelerometers) worn at baseline, after the intervention, and again 1 year after the end of the intervention.

This study is relevant to the prevention of type 2 diabetes in that it addresses the mechanisms of physical activity behavior change among adolescents. This developmental period is typically characterized by declining participation in physical activity, and thus represents a critical period for intervention. The results will increase understanding about why some adolescents remain active while others do not and will test a novel intervention that may be more effective among reluctant exercisers.

Enrollment

140 patients

Sex

All

Ages

10 to 12 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • Healthy
  • not a member of a sports team
  • right handed

Exclusion criteria

  • no past head trauma
  • not depressed

Trial design

Primary purpose

Prevention

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Double Blind

140 participants in 2 patient groups

Exercise prescription
Experimental group
Description:
Participants are given an exercise prescription in the form of a target heart rate range for exercising. The range is determined based on their personal preferences so that it is an intensity that feels "good".
Treatment:
Behavioral: feeling states exercise intervention
traditional exercise
Active Comparator group
Description:
participants are given an exercise prescription based on percent of vo2 peak
Treatment:
Behavioral: feeling states exercise intervention

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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