NCT01693926

Effect of Physical Activity an Stress in Children

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 50 (actual)
• Sponsor: University of Lausanne Hospitals · Academic / Other
• Sex: All
• Age: 7 Years – 10 Years
• Healthy volunteers: Accepted

Summary

The objective of the study is to evaluate the impact of physical activity in obese and nonobese prepubertal children on: 1. biological stress responses during a psychosocial stress test 2. snacking and feeling of hunger in response to the same psychosocial stress test 3. the moderating factor of attachment on the biological stress responses and on snacking Children will be investigated on one study day during 3.5 hours.

Detailed description

Hypotheses In this study, 3 primary hypotheses will be tested. 1. Moderate physical activity during 25 min in children decreases the cortisol levels in response to the Trier Social Stress Test TSST-C (for children). 2. Moderate physical activity during 25 min in children decreases the snacking (calorie consumption when corrected for expenditure and switch in quality of food intake) in response to the Trier Social Stress Test TSST-C (for children). 3. A secure attachment will be a moderating factor for the general increase in cortisol and the snacking in response to the psychosocial stress test (Trier Social Stress Test TSST-C). Secondary objectives: 1. To test if the impact of physical activity on stress responses and snacking differs between obese and non-obese children 2. To test the impact of physical activity on the cardiovascular stress reactivity (blood pressure, heart rate) and the perceived stress (scale) in response to the Trier Social Stress Test TSST-C? 3. To test if the stress reactivity and its modulation by physical activity is different in anxious and in impulsives/labile children 4. To test if serious life events and parental worries and parental educational style influence the stress reactivity

Conditions

• Obesity
• Children
• Physical Activity
• Stress
• Snacking

Interventions

Type	Name	Description
BEHAVIORAL	Acute physical activity intervention	25 min of physical activity. The placebo arm will have 25 min of reading.
BEHAVIORAL	placebo

Timeline

• Start date: 2012-09-01
• Primary completion: 2013-06-01
• Completion: 2017-12-01
• First posted: 2012-09-26
• Last updated: 2020-03-25

Locations

1 site across 1 country: Switzerland