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- Title
Cognitive Dietary Restraint Is Associated with Stress Fractures in Women Runners.
- Authors
Guest, Nanci S.; Barr, Susan I.
- Abstract
High levels of cognitive dietary restraint (CDR) have been associated with subclinical menstrual cycle irregularities and increased cortisol levels, both of which can affect bone mineral density (BMD). Low BMD has been impli-cated in stress fracture risk. We assessed CDR in female runners (greater than or equal to 20 km/wk) with a recent stress fracture (SF) and with no stress fracture history (NSF). A sample of 79 runners (n = 38 SF, 29 ± 5 y; n = 41 NSF, 29 ± 6 y) completed a 3-d food record and questionnaire assessing physical activity, menstrual cycle history, and perceived stress. SF and NSF runners had similar body mass index (21.2 ± 1.8 vs. 22.0 ± 2.5 kg/m2), physical activity (35.7 ± 13.5 vs. 33.4 ± 1.34 km/wk), perceived stress, and dietary intakes. CDR, however, was higher in SF runners (11.0 ± 5.4 vs. 8.4 ± 4.3, P < 0.05). Subclinical menstrual cycle disturbances and increased cortisol levels that are associated with high CDR, might in turn contribute to lowered BMD and increased stress fracture risk.
- Subjects
STRESS fractures (Orthopedics); BONE fractures; WOMEN runners; WOMEN athletes; EXERCISE; PHYSICAL fitness; DIET
- Publication
International Journal of Sport Nutrition & Exercise Metabolism, 2005, Vol 15, Issue 2, p147
- ISSN
1526-484X
- Publication type
Article
- DOI
10.1123/ijsnem.15.2.147