Relationship Between Training Intensity and Volume and Hypothyroidism Among Female Runners.
Publication/Presentation Date
11-1-2015
Abstract
OBJECTIVE: To determine the effect of training intensity on thyroid function among female nonelite runners.
DESIGN: Internet-based survey of medical history and training and racing habits of female runners.
PARTICIPANTS: A total of 1222 female runners aged ≥35 years.
MAIN OUTCOME MEASURES: Self-reported diagnosis of hypothyroidism and details of training and racing.
RESULTS: Hypothyroidism was reported by 149 (12.2%). No characteristics of training intensity or duration, including average miles per week, training pace, or years of accumulated running were associated with thyroid dysfunction. Females who began running at or before age 10 were more likely to report a diagnosis of hypothyroidism versus those who began running at an older age (4.7% vs 1.5%, P = 0.018).
CONCLUSIONS: Our results do not support the concept of overtraining-related hypothyroidism among nonelite female distance runners although our data demonstrated a 3-fold increase in hypothyroidism among those who began a career at or before age 10. Further study is required to confirm and determine a possible mechanism of this association.
Volume
25
Issue
6
First Page
551
Last Page
553
ISSN
1536-3724
Published In/Presented At
Matsumura, M. E., Bucciarelli, M., & Perilli, G. (2015). Relationship Between Training Intensity and Volume and Hypothyroidism Among Female Runners. Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine, 25(6), 551–553. https://doi.org/10.1097/JSM.0000000000000172
Disciplines
Sports Sciences
PubMedID
25756700
Department(s)
Department of Medicine, Cardiology Division
Document Type
Article