NCT02995226

Abnormal Regulation, Estimation and Cognitive Impacts of Physical Efforts as an Endophenotype of Anorexia Nervosa

Analysis of the Capacity to Regulate Physical Efforts and to Estimate Its Intensity as an Endophenotype of Anorexia Nervosa, Because of a Specific Impact of the Physical Effort at the Emotional, Cognitive, Pain, Genetic and Biological Level

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 180 (estimated)
• Sponsor: Centre Hospitalier St Anne · Academic / Other
• Sex: Female
• Age: 18 Years – 50 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study is to check if patients, but also relatives (as they share familial and genetic risk factors), are having more difficulties in regulating a spontaneous, pleasant physical effort (doing "too much") compared to healthy controls, and if physical efforts are participating to core symptoms of anorexia nervosa, such as more appetite (instead of less), less pain, more abnormal body image, and less cognitive flexibility. Such a result could help to further understand the role of difficulties with physical exercise as part of the phenotype of anorexia nervosa.

Detailed description

This is a three steps protocol. First, patients (with anorexia nervosa), controls (with no eating disorder) and first degree relatives (with no eating disorder) will be tested for emotional accuracy (seing faces on a screen with different core emotions), pain threshold (how long they can support a cold probe), body size (how they see themselves), appetite and cognitive flexibility (a test where the capacity to change rules during a game is done easily or not). Then all subjects will do a standardized physical exercise which represents an effort with the equivalent level of energy for each participants as being chosen according to each level of competency (assessed through the "maximal aerobic power"). The third step consists in the repetition of (nearly) initial tests.

Conditions

• Anorexia Nervosa

Interventions

Type	Name	Description
OTHER	Clinical and biological examination, Saliva (or blood) test Glycemia, thermal test, cognitive and bike tests, questionnaires	Clinical and biological examination, Saliva (or blood) test, glycemia, thermal test, cognitive and bike tests, questionnaires
OTHER	Clinical examination, Glycemia, saliva (or blood) test, thermal test, cognitive and bike tests, questionnaires	Clinical examination, Glycemia, saliva (or blood) test, thermal test, cognitive and bike tests, questionnaires

Timeline

• Start date: 2017-02-27
• Primary completion: 2020-04-01
• Completion: 2020-09-01
• First posted: 2016-12-16
• Last updated: 2018-01-25

Locations

1 site across 1 country: France