Mechanisms Underlying Pathological Exercise in Women
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- Paperback
- Sideantal:
- 94
- Udgivet:
- 25. november 2023
- Størrelse:
- 152x5x229 mm.
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- 150 g.
- 2-4 uger.
- 18. december 2024
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Beskrivelse af Mechanisms Underlying Pathological Exercise in Women
Pathological exercise (PE) is a common feature of individuals with eating disorders (ED) and
represents a key maintaining factor of eating pathology. However, little is known about
underlying mechanisms that maintain PE and whether these mechanisms are influenced by the
occurrence of PE in the context of an ED. The present study tested hypotheses that women with
PE would 1) experience exercise as more reinforcing, 2) show greater cortisol reactivity in
response to exercise, and 3) that greater cortisol reactivity in response to exercise would predict
greater increases in positive affect following exercise. Participants (N=64 women total; n=16 PE
with ED, n=16 PE Only, n=16 ED Only, n=16 Control) completed a computerized progressive
ratio (PR) task to earn running time on a treadmill as a measure of the reinforcing value of
exercise. HPA-axis response to acute exercise was measured through salivary cortisol and
changes in affect were measured by a self-report questionnaire. Participants provided four saliva
samples and self-report ratings directly prior to and 0-, 20-, and 40- minutes after running for 30
minutes on a treadmill at 75% maximum heart rate. Results indicated that women with PE had
significantly higher reinforcing value of exercise (p
represents a key maintaining factor of eating pathology. However, little is known about
underlying mechanisms that maintain PE and whether these mechanisms are influenced by the
occurrence of PE in the context of an ED. The present study tested hypotheses that women with
PE would 1) experience exercise as more reinforcing, 2) show greater cortisol reactivity in
response to exercise, and 3) that greater cortisol reactivity in response to exercise would predict
greater increases in positive affect following exercise. Participants (N=64 women total; n=16 PE
with ED, n=16 PE Only, n=16 ED Only, n=16 Control) completed a computerized progressive
ratio (PR) task to earn running time on a treadmill as a measure of the reinforcing value of
exercise. HPA-axis response to acute exercise was measured through salivary cortisol and
changes in affect were measured by a self-report questionnaire. Participants provided four saliva
samples and self-report ratings directly prior to and 0-, 20-, and 40- minutes after running for 30
minutes on a treadmill at 75% maximum heart rate. Results indicated that women with PE had
significantly higher reinforcing value of exercise (p
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