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Features associated with excessive exercise in women with eating disorders.

Hemal Shroff1, Lauren Reba, Laura M Thornton

  • 1Department of Psychiatry, University of North Carolina, Chapel Hill, NC 27599-7160, and Center for Eating Disorders at Sheppard and Enoch Pratt Hospital, Towson, MD, USA.

The International Journal of Eating Disorders
|April 26, 2006
PubMed
Summary

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Excessive exercise is common in eating disorders, especially the purging subtype of anorexia nervosa (AN). This behavior links to anxiety, perfectionism, and obsessions in affected women.

Area of Science:

  • Psychiatry
  • Behavioral Science
  • Genetics

Background:

  • Excessive exercise and motor restlessness are prevalent in eating disorders.
  • Activity anorexia nervosa (AN) animal models suggest exercise may be an endophenotype for AN.
  • Understanding exercise patterns across eating disorder subtypes is crucial.

Purpose of the Study:

  • To investigate features associated with excessive exercise across different eating disorder subtypes.
  • To explore the relationship between excessive exercise and psychological traits.

Main Methods:

  • Study included 1,857 female participants with diagnoses of AN, bulimia nervosa (BN), or ED-NOS.
  • Excessive exercise was identified using the Structured Interview for Anorexic and Bulimic Disorders (SIAB).

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Main Results:

  • Excessive exercise was most frequent in the purging subtype of AN.
  • Individuals with excessive exercise reported lower minimum BMI, younger age, and higher scores for anxiety, perfectionism, obsessions, and compulsions.
  • Greater persistence was also noted in those reporting excessive exercise.

Conclusions:

  • Excessive exercise is particularly linked to the purging subtype of AN.
  • Anxious and obsessional temperament and personality traits are associated with excessive exercise in women with eating disorders.