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Persistent fatigue in young athletes: measuring the clinical course and identifying variables affecting clinical recovery.
- Source :
-
Scandinavian Journal of Medicine & Science in Sports . Feb2011, Vol. 21 Issue 1, p90-97. 8p. 2 Charts, 2 Graphs. - Publication Year :
- 2011
-
Abstract
- The objective of this paper is to measure the clinical course (months) in young athletes with persistent fatigue and to identify any covariates affecting the duration of recovery. This was a prospective longitudinal study of 68 athletes; 87% were elite (42 males, 26 females), aged 20.5±3.74 years (SD), who presented with the symptom of persistent fatigue. The collective duration to full clinical recovery was estimated using Kaplan-Meier product-limit curves, and covariates associated with prolonging recovery were identified from Cox proportional hazard models. The median recovery was 5 months (range 1-60 months). The range of presenting symptom duration was 0.5-36 months. The covariates identified were an increased duration of presenting symptoms [hazard ratio (HR), 1.06; 95% confidence interval (CI), 1.02-1.12; P=0.005] and the response of serum cortisol concentration to a standard exercise challenge (HR, 1.92; 95% CI, 1.09-3.38; P=0.03). Delay in recovery was not associated with categories of fatigue that included medical, training-related diagnoses, or other causes. In conclusion, the fatigued athlete represents a significant clinical problem with a median recovery of 5 months, whose collective clinical course to recovery can be estimated by Kaplan-Meier curves and appears to be a continuum. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ATHLETES
*COMPUTER software
*CONFIDENCE intervals
*EXERCISE
*FATIGUE (Physiology)
*HYDROCORTISONE
*LONGITUDINAL method
*PROBABILITY theory
*SCALE analysis (Psychology)
*SURVIVAL analysis (Biometry)
*WORK measurement
*DATA analysis
*OVERTRAINING
*PROPORTIONAL hazards models
*DISEASE complications
Subjects
Details
- Language :
- English
- ISSN :
- 09057188
- Volume :
- 21
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Scandinavian Journal of Medicine & Science in Sports
- Publication Type :
- Academic Journal
- Accession number :
- 57291887
- Full Text :
- https://doi.org/10.1111/j.1600-0838.2009.00983.x